INSTRUCTION MANUALELECTRONIC LOADLSA SERIES
LSA-165

LSA-165V1

LSA-330

LSA-1000

GP-IB/USB/RS-232C
OPTIONAL CONTROL BOARD FOR LSA SERIES
IF-80GUR

B71-0198-11

■ About Brands and Trademarks
TEXIO is the product brand in the industrial-use electronics equipment of our company.
The company and product names described in this manual are the brands and trademarks owned by the respective
companies or organizations in each country and region.

■ About the Instruction Manual
Permission from the copyright holder is needed to reprint the contents of this manual, in whole or in part. Be aware thatthe product specifications and the contents of this manual are subject to change for the purpose of improvement.

CONTENTS

USING THE PRODUCT SAFETY .......................................................................................................................... Ⅰ-Ⅲ

1. LSA Series __________________________________________________________ 1
1-1. Product Overview................................................................................................................. 1
1-2. Features............................................................................................................................... 1

2. Preparation _________________________________________________________ 2
2-1. Accessories.......................................................................................................................... 2
2-2. Checking the Power Supply Voltage .................................................................................... 3
2-3. Power Cable ........................................................................................................................ 3
2-4. Using LSA Series Models in Float Condition ........................................................................ 3
2-5. Input Terminals..................................................................................................................... 3
2-6. Front/Rear Input Terminal Cover .......................................................................................... 3
2-7. Checking the Rear Control Terminals and Other Precautions............................................... 3
2-8. ±S Terminals ........................................................................................................................ 4
2-9. "LOAD ON" of LSA Series Models ....................................................................................... 4
2-10. Installation Environment ..................................................................................................... 4
2-11. Default Settings and Saving the Settings Data ................................................................... 5
2-11-1. Using the DIRECT Keys to Specify Settings ...........................................................................5
2-11-2. Using the MENU Key to Specify Settings ................................................................................6
2-11-3. Initialization ..............................................................................................................................6
2-12. Movement of the LSA-165V1 model................................................................................... 6

3. Panel Parts _________________________________________________________ 7
3-1. Front Panel .......................................................................................................................... 7
3-2. Rear Panel ........................................................................................................................... 8

4. Getting Started ______________________________________________________ 9
4-1. Connecting to a Power Supply Source ................................................................................. 9
4-2. Wiring Input Terminals .......................................................................................................... 9
4-2-1. Connecting to the Rear Input Terminals ....................................................................................9
4-2-2. Connecting to the Front Input Terminals .................................................................................10
4-3. Effect of Inductance on the Load Line .................................................................................11
4-4. Cleaning the Front Grill ...................................................................................................... 12
4-4-1. Removing the Front Grill..........................................................................................................124-5. Alarms................................................................................................................................ 13

5. Basic Operations ___________________________________________________ 14
5-1. Power On ........................................................................................................................... 14
5-2. Basic Operations on the Operation Panel .......................................................................... 14
5-2-1. Using the DIRECT Keys to Specify the Function Settings ......................................................15
5-2-2. Using the Menu Icons to Specify the Function Settings ..........................................................15
5-2-3. Using the Operation Panel ......................................................................................................16
5-2-3-1. Using the DIRECT Keys to Specify the Function Settings .......................................................16
5-2-3-2. Selecting a Menu Icon ..............................................................................................................19
5-2-3-3. Changing the Pages in the Menu Window ...............................................................................20
5-2-3-4. Changing Parameters ..............................................................................................................21

5-3. Using Functions ................................................................................................................. 24
5-3-1. Main Setup Function ................................................................................................................24
5-3-1-1. Specifying the Constant Current (CC) Mode Settings..............................................................24
5-3-1-2. Specifying the Constant Resistance Mode Settings (CRx1 / CRx10) ......................................26
5-3-1-3. Specifying the Constant Power (CP) Mode Settings ................................................................29
5-3-1-4. Specifying the Constant Voltage Mode Settings (CV+CC/CV+CR) .........................................31
5-3-1-5. LOAD ON/OFF Function ..........................................................................................................35

5-3-2. Preset Function........................................................................................................................36
5-3-2-1. Changing the Set Value and Saving the Preset Data ..............................................................37
5-3-2-2. Recalling Preset Data...............................................................................................................38
5-3-2-3. Checking Preset Data ..............................................................................................................38

5-3-3. Protective Functions ................................................................................................................39
5-3-3-1. UVP Function ...........................................................................................................................40
5-3-3-2. OCP/OCL Functions .................................................................................................................41
5-3-3-3. OPP and OPL Functions ..........................................................................................................42
5-3-3-4. Canceling the Protect and Limit Functions ..............................................................................43

5-3-4. Load Timer Function ................................................................................................................44
5-3-4-1. Specifying the Load Timer Settings ..........................................................................................45

5-3-5. Soft Start Function ...................................................................................................................46
5-3-5-1. Specifying the Soft Start Function Settings ..............................................................................48

5-3-6. Switching Function ..................................................................................................................49
5-3-6-1. Using the Switching Function ...................................................................................................50
5-3-6-2. Specifying the Switching Type ..................................................................................................52
5-3-6-3. Specifying the Main Value and Sub Value Settings .................................................................53
5-3-6-4. Specifying the Slew Rate and Response .................................................................................53
5-3-6-5. Specifying the Frequency and Duty .........................................................................................54
5-3-6-6. Specifying the Dual Time Switching .........................................................................................55

5-3-7. Remote Voltage Sensing Function ..........................................................................................56
5-3-7-1. Connecting the Sensing Cables ...............................................................................................56
5-3-7-2. Specifying the Voltage Detection Point ....................................................................................57

5-3-8. Key Lock Function ...................................................................................................................58
5-3-9. Screen Saver Function ............................................................................................................59
5-3-10. Master/Slave Operation Function ..........................................................................................60
5-3-10-1. Connecting the Units for Master/Slave Operation ..................................................................60
5-3-10-2. Specifying the Master Unit .....................................................................................................61
5-3-10-3. Specifying the Slave Unit .......................................................................................................64

5-3-11. Using External Signals to Control the Unit ............................................................................67
5-3-11-1. Assembling the J1 and J2 Connectors ...................................................................................67
5-3-11-2. J1 and J2 Connector Specifications .......................................................................................68
5-3-11-3. Specifying External Control ....................................................................................................69
5-3-11-4. Set Value Control Via an External Voltage or External Resistance ........................................70
5-3-11-5. LOAD ON/OFF Control Via an External Contact Signal.........................................................72
5-3-11-6. C Range Control Via an External Contact Signal ...................................................................73
5-3-11-7. Switching Control Via an External Contact Signal..................................................................75
5-3-11-8. External Alarm Signal Input ....................................................................................................77
5-3-11-9. External Trigger Signal Input ..................................................................................................78
5-3-11-10. Current Monitor Output .........................................................................................................78
5-3-11-11. LOAD ON/OFF Status Output ...............................................................................................78
5-3-11-12. C Range Status Output.........................................................................................................79
5-3-11-13. Switching Function Output Value Status Output...................................................................79
5-3-11-14. Alarm Status Output ..............................................................................................................80
5-3-11-15. Trigger Signal Output............................................................................................................80

5-3-12. Menu Window Operations .....................................................................................................81
5-3-12-1. Full Screen Monitor ................................................................................................................81
5-3-12-2. Status Display.........................................................................................................................82
5-3-12-3. System Setup .........................................................................................................................83
5-3-12-4. Data Initialization ....................................................................................................................86

5-3-13．Function of the 0V electric discharge (LSA-165V1 model) ................................................87
5-4. Sequence Function ............................................................................................................ 89
5-4-1. Overview of Sequence Waveforms .........................................................................................89
5-4-2. Overview of Sequence Programs............................................................................................90
5-4-3. Overview of Specifying Sequence Waveforms and Sequence Programs ..............................91
5-4-3-1. Specifying a Sequence Waveform ...........................................................................................92
5-4-3-2. Specifying the Execution Conditions of Sequence Groups ......................................................94
5-4-3-3. Specifying the Conditional Branching of Sequence Groups ....................................................96
5-4-3-4. Step Settings ..........................................................................................................................100
5-4-3-5. Editing Steps ..........................................................................................................................104
5-4-3-6. Specifying the Execution Order of Sequence Groups ............................................................106

5-4-4. Executing Sequences ........................................................................................................... 107
5-4-5．Elapsed time indication of the sequence program ............................................................... 109

6. Using the IF-80GUR Control Board ____________________________________ 110
6-1. Preparing to Use the IF-80GUR Control Board ................................................................. 110
6-1-1. Mounting the IF-80GUR Control Board ................................................................................. 110
6-1-2. Selecting a Communication Interface.................................................................................... 111

6-2. Communication Interfaces ................................................................................................ 113
6-2-1. Using GP-IB ........................................................................................................................... 113
6-2-2. Using USB ............................................................................................................................. 117
6-2-3. RS-232C ................................................................................................................................ 118
6-3. Interface Commands ......................................................................................................... 119
6-3-1. Interface Command List ........................................................................................................ 119
6-3-1-1. Unit Settings and Operation Commands ............................................................................... 119
6-3-1-2. Measurement Commands ......................................................................................................120
6-3-1-3. Other Commands ...................................................................................................................120
6-3-1-4. IEEE 488.2 Common Commands ..........................................................................................120
6-3-1-5. SCPI Status Register Commands ..........................................................................................120
6-3-1-6. Sequence Commands ............................................................................................................121

6-3-2. Interface Command Details .................................................................................................. 122
6-3-2-1. Operation Mode SET Commands ..........................................................................................122
6-3-2-2. Parameter SET Commands ...................................................................................................122
6-3-2-3. Protect/Limit SET Commands ................................................................................................124
6-3-2-4. Switching Function SET Commands ......................................................................................125
6-3-2-5. Current Range SET Commands ............................................................................................127
6-3-2-6. Preset Function SET Commands ...........................................................................................127
6-3-2-7. Soft Start Function SET Commands ......................................................................................127
6-3-2-8. Input Status SET Commands .................................................................................................128
6-3-2-9. Measuring Commands ...........................................................................................................128
6-3-2-10. Status Report ........................................................................................................................129
6-3-2-11. OPERation Status Register ..................................................................................................130
6-3-2-12. QUEStionable Status Register .............................................................................................131
6-3-2-13. Standard Event Status Register ...........................................................................................132
6-3-2-14. Status Byte Register and Service Request ..........................................................................133
6-3-2-15. Supplementary Explanation about the Status Report ..........................................................134
6-3-2-16. Other Commands .................................................................................................................135
6-3-2-17. Sequence Command Details ...............................................................................................136

Appendix A. Troubleshooting __________________________________________ 143
Appendix B. Specifications ____________________________________________ 144
Appendix C. Outside Dimensions _______________________________________ 151

USING THE PRODUCT SAFELY■ Preface
To use the product safely, read instruction manual to the end.
Before using this product, understand how to correctly use it.
If you read the manuals but you do not understand how to use it, ask us or your local dealer.
After you read the manuals, save it so that you can read it anytime as required.

■ Pictorial indication
The manuals and product show the warning and caution items required to safely use the product.
The following pictorial indication and warning character indication are provided.

<Pictorial indication>
Some part of this product or the manuals may show this pictorial indication.
In this case, if the product is incorrectly used in that part, a serious danger may bebrought about on the user's body or the product.
To use the part with this pictorial indication, be sure to refer to the manuals.

! WARNING

If you use the product, ignoring this indication, you may get killed or seriously injured.
This indication shows that the warning item to avoid the danger is provided.

!

If you incorrectly use the product, ignoring this indication, you may get slightly injured or
the product may be damaged.
This indication shows that the caution item to avoid the danger is provided.

CAUTION

Please be informed that we are not responsible for any damages to the user or to the third person, arising from
malfunctions or other failures due to wrong use of the product or incorrect operation, except such responsibility fordamages as required by law.

IUSING THE PRODUCT SAFELY! CAUTION! WARNING■ Do not remove the product's covers and panels
Never remove the product's covers and panels for any purpose.
Otherwise, the user's electric shock or fire may be incurred.

■ Warning on using the productWarning items given below are to avoid danger to user's body and life and avoid the damage or deterioration of the
product. Use the product, observing the following warning and caution items.

■ Warning items on power supply● Power supply voltage
The rated power supply voltages of the product are 100, 120, 220 and 240VAC. The rated power supply voltage foreach product should be confirmed by reading the label attached on the back of the product or by the “rated” column
shown in the instruction manual. The specification of power cord attached to the products is rated to 125VAC
for all products which are designed to be used in the areas where commercial power supply voltage is not higher
than 125VAC. Accordingly, you must change the power cord if you want to use the product at the power supply
voltage higher than 125VAC. If you use the product without changing power cord to 250VAC rated one, electric
shock or fire may be caused. When you used the product equipped with power supply voltage switchingsystem, please refer to the corresponding chapter in the instruction manuals of each product.

● Power cord
(IMPORTANT)The attached power cord set can be used for this device only.

If the attached power cord is damaged, stop using the product and call us or your local dealer.
If the power cord is used without the damage being removed, an electric shock or fire may be caused.

● Protective fuse
If an input protective fuse is blown, the product does not operate. For a product with external fuse holder, the fuse
may be replaced. As for how to replace the fuse, refer to the corresponding chapter in the instruction manual.
If no fuse replacement procedures are indicated, the user is not permitted to replace it. In such case, keep thecase closed and consult us or your local dealer. If the fuse is incorrectly replaced, a fire may occur.

■ Warning item on Grounding
If the product has the GND terminal on the front or rear panel surface, be sure to ground the product to safely use it.

■ Warnings on Installation environment● Operating temperature and humidity
Use the product within the operating temperature indicated in the “rating” temperature column.
If the product is used with the vents of the product blocked or in high ambient temperatures, a fire may occur.
Use the product within the operating humidity indicated in the “rating” humidity column.
Watch out for condensation by a sharp humidity change such as transfer to a room with a different humidity.
Also, do not operate the product with wet hands. Otherwise, an electric shock or fire may occur.

● Use in gas
Use in and around a place where an inflammable or explosive gas or steam is generated or stored may result in an
explosion and fire. Do not operate the product in such an environment.
Also, use in and around a place where a corrosive gas is generated or spreading causes a serious damage to the
product. Do not operate the product in such an environment.

● Installation place
Do not insert metal and inflammable materials into the product from its vent and spill water on it.
Otherwise, electric shock or fire may occur.
IIUSING THE PRODUCT SAFELY● POWER SWICHT
Do not do the setting that comes to have difficulty in ON/OFF of the power switch.
● POWER CABLE PLUG
Do not setting it in the place having difficulty in handling of the power supply cable plug.

■ Do not let foreign matter in
Do not insert metal and inflammable materials into the product from its vent and spill water on it.
Otherwise, electric shock or fire may occur.

■ Warning item on abnormality while in use
If smoke or fire is generated from the product while in use, stop using the product, turn off the switch, and remove thepower cord plug from the outlet. After confirming that no other devices catch fire, ask us or your local dealer.

■ Input / Output terminals
Maximum input to terminal is specified to prevent the product from being damaged.
Do not supply input, exceeding the specifications that are indicated in the "Rating" column in the instruction manual of
the product. Also, do not supply power to the output terminals from the outside.
Otherwise, a product failure is caused.

■ Calibration
Although the performance and specifications of the product are checked under strict quality control during shipmentfrom the factory, they may be deviated more or less by deterioration of parts due to their aging or others.
It is recommended to periodically calibrate the product so that it is used with its performance and specifications stable.
For consultation about the product calibration, ask us or your local dealer.

■ Daily Maintenance
When you clean off the dirt of the product covers, panels, and knobs, avoid solvents such as thinner and benzene.
Otherwise, the paint may peel off or resin surface may be affected. To wipe off the covers, panels, and knobs, use asoft cloth with neutral detergent in it.
During cleaning, be careful that water, detergents, or other foreign matters do not get into the product.
If a liquid or metal gets into the product, an electric shock and fire are caused.
During cleaning, remove the power cord plug from the outlet.
Use the product correctly and safely, observing the above warning and caution items.
Because the instruction manual indicates caution items even in individual items, observe those caution items to correctly
use the product.
If you have questions or comments about the manuals, ask us or E-Mail us.

III1. LSA Series
1-1. Product Overview
The LSA series is a line of electronic loads that can operate in four different modes: CC, CR, CP, and CV (+CC/+CR).
These electronic loads can be used to evaluate regulated DC power supply units, batteries, and other devices.
In addition, current electric discharge control to 0V is enabled between remote sensing terminals and can use the V1
model for the hyperelectric discharge examinations of the battery.
Each model in the LSA series can be fitted with an IF-80GUR control board, which is mounted in the slot on the rear
panel. This control board enables each model to be remotely controlled via communication.

1-2. Features
 The smallest movement voltage is rated load for standard type 1V. The LSA-165V1 model can work to 0V by power
supply use for 0V.
 Switching at a minimum width of 10μs.
 Standalone sequence function with a maximum of 1018 steps.
 Support for GP-IB, USB, RS-232C, and other communication interfaces (when the separately sold IF-80GUR
control board is installed).
 Ability to use an external voltage (0-10V) and external resistance (0-10kΩ) for analog control.
 Maximum of five units can be connected for master and slave parallel operation.
 Heat release via forced air cooling: Fan placed in the front reduces the work load and extends the product lifetime.
 Three protection functions: UVP, OCP, and OPP.
 Six alarm functions for reverse connection, overvoltage, overpower, overcurrent, front-terminal overcurrent, andoverheating.
 Supply power voltage range of 100 to 240V AC (maximum of 250V AC) at 50Hz/60Hz can be used without needing
to change the AC voltage. Make sure to use each model within the specified rated voltage of the supplied power
cable.
Model
Maximum applied voltage

LSA-165/165V1

LSA-330

LSA-1000

150V

Input power

165W

330W

1000W

Input current

33A

66A

200A

1

2. Preparation
2-1. Accessories
Make sure all the accessories are included with the product. If any of the accessories are missing or damaged, pleasecontact one of our sales offices or your local dealer.
Accessories vary by model.
<Common accessories for all models>

CD-ROM（Manual） 1 pc

Power cable: 1 pc

Front input terminal cover :[F07-1590] 2 pcs

Rear control terminal connector
Connector: [E59-0613] 2 pcs
Connector cover : [F07-1594] 4 pcs<Accessories for LSA-165/ LSA-165V1/LSA-330>

Set Contents
Hexagon bolt (P3) : 2 pcs
Plain washer: 2 pcs
Hexagon nut: 2 pcs

Rear input terminal cover :[F07-1592] 1 pc

Screws for rear input terminal
cover : [N66-3005] 4 pcs

Screw set for rear input terminal :[N99-0416] 1 set<Accessories for LSA-1000>

Set Contents
Hexagon bolt:
Plain washer
Hexagon nut
Spring washer
Rear input terminal cover :[F07-1592] 2 pcs

Screws for rear input terminal
cover: [N66-3005] 8 pcs

2: 2 pcs: 4 pcs: 2 pcs: 2 pcs

Screw set for rear input terminal:[N99-0418] 1 set

2-2. Checking the Power Supply Voltage
When you use the unit, make sure to use it within the rated supply voltage that is specified. The rated supply voltage
range of this unit is single-phase 100 to 240V AC (maximum of 250V AC) at 50Hz/60Hz.
This unit can be operated at power supply voltages of both 100 and 200V AC. However, 125V AC is the specified rated
supply voltage of the power cable supplied with units sold in Japan and other countries where the commercial power
supply voltage is 125V AC or lower.
If you need to operate the unit at a power supply voltage of 200V AC, please contact our company’s service center oryour local dealer.

2-3. Power Cable
Make sure to use the power cable that is supplied with the unit. The power cable supplied with the unit is a 3-P plug
cable with a ground terminal.
Make sure to establish a ground connection. Failure to establish a ground connection can result in electric shock.

! CAUTION

The enclosed cable set is exclusively for this product.
It cannot be used with other products.

2-4. Using LSA Series Models in Float Condition
When you use an LSA series model in float condition, high voltage might build up between the input terminal and the
housing. Even after you are done using the unit, the high voltage remains between the input terminal and the
housing. The presence of high voltage can result in electric shock.
If high voltage is still present between the input terminal and the housing when you finish using the unit, connect a
resistor of approximately 500kΩ between the positive/negative input terminals and the housing to discharge thevoltage. Make sure to discharge the voltage for at least 2 seconds.

2-5. Input Terminals
Each model in the LSA series is equipped with positive and negative input terminals on the front and rear panels. The
terminals on both panels are electrically connected. Because the front terminal is a sub input terminal with a rated
input current of 66A, a rated current cannot be input into the LSA-1000. For input currents of greater than 66A, use
the rear input terminal. If you input a current greater than 66A into the front terminal, the front terminal overcurrent
alarm is issued.

! CAUTION

The input terminals are polar. The positive input terminal must be connected to thepositive output of the power supply source, and the negative input terminal must beconnected to the negative output.
Failure to properly connect the power source to the unit (incorrect polarity) can leadto problems with the power supply source or result in damage to the unit.

! CAUTION

Note that paid-repairs might be necessary to fix problems caused by an incorrect
polarity connection, even if the problems occur during the warranty period.
In addition, please note that NIKKE TECHNO SYSTEM does not take any
responsibility for problems with the power supply source caused by the incorrect
polarity connection.

2-6. Front/Rear Input Terminal Cover
The positive and negative input terminals on the front and rear panels are electrically connected. Make sure to placeterminal covers on both the terminals that are being used and those that are not being used.
 For details about installing terminal covers on the front and rear panels, see “4-2. Wiring Input Terminals”.

2-7. Checking the Rear Control Terminals and Other Precautions
Some of the external control terminals on LSA series models are connected to the negative input terminals. The
power supply unit and the resistor for external control must be used when in float condition.

3

2-8. ±S Terminals
The rear panel of each LSA series models is equipped with +S terminal and -S terminal. The -S terminal is electricallyconnected to a negative input terminal.

2-9. "LOAD ON" of LSA Series Models
When you switch from LOAD OFF mode to LOAD ON mode, make sure that voltage has already been applied to theunit (except when performing operations such as “soft start”). If you switch to "LOAD ON" before applying voltage
from the power source, the power supply unit might apply the maximum amount of current and break down.

2-10. Installation Environment
The specified operating temperature range for LSA series models is 0 to 40°C. If you use the unit in a location with ahigh ambient temperature, the internal temperature protection circuit is activated and the unit switches to LOAD OFF
mode. Do not block or place any objects in front of the vents on the front and rear panels while the unit is in use. In
addition, make sure to maintain a distance of at least 30cm between the unit and other objects. Install and use theunit in a location where the air that enters the front vent is no more than 40°C.
Do not use the unit in a location where there are a lot of dust particles and corrosive gases. Excessive exposure todust particles or corrosive gases can damage the unit and cause it to malfunction.
Each LSA series model is equipped with a switching power supply unit. If highly sensitive measurement
instruments are placed near an LSA series model or installed on the same power supply line, the instruments
might be affected by the LSA series model.

42-11. Default Settings and Saving the Settings Data
The default settings are listed in the table below.

2-11-1. Using the DIRECT Keys to Specify Settings
To save the current settings (excluding the Preset function) specified by using the DIRECT keys to the internal memory,press the LOAD key while in LOAD ON mode and then switch to the LOAD OFF mode.
For the Preset function, you can save the Preset and Limit values to the internal memory by using the preset function
keys while in “Save" mode.
Table 2-1
Item

Default Setting
Main Value

Main Setup function

Minimum setting value

Limit*

Maximum setting value: CV modeMode

CC modeC Range

H Range

V Range*

150V Range: CV mode

Rspns*

3: CV mode

Operation Selection
Preset function

RecallPreset Values

Minimum setting value

Preset Limit Values*

Protect / Limit function

TimerSoft Start function

SW function

Maximum setting value: CV mode

UVP

Off

OCP*

Maximum setting value: All modes except CC mode

OPP

Maximum setting value

OCL*

Off: All modes except CC mode

OPL

Off

On Timer

Off

Off Timer

Off

Soft Start Voltage-0.50V: CC mode

Soft Start Time

1ms: CC mode

Sub Value

Minimum setting value

Slew Rate

Maximum setting value: All modes except CV mode

Rspns*

3: CV mode

Freq

1.0Hz

Duty

50%

Main Time*

500ms
Switching Type: TimeSub Time*
Seq function

Prgrm / Wave

A

Cycle

1

* Default settings for when the operation mode or switching type is changed.

5

2-11-2. Using the MENU Key to Specify Settings
To save the settings you specified with the MENU key to t he internal memory, press "ENTER" when you arefinished changing the values.
Table 2-2
Item
Default Setting

System Setup

Master / Slave

Contrast
Brightness

5
25

Screen Saver
BuzzerOff
Off

Switching Type
Remote Sensing

Freq / Duty
Int

Load Response
Bias On-Voltage

Slow
0.25V

Master / Slave
Slave Qty.

Alone
1

Slave TypeTerminal Unit

Same
No

Select TypeInterface

External
GP-IB

PC Address
Ext Control

1
Off

Ext Load
Ext C Range

Off
Off

Interface Setup*
External Setup
External Setup

Sequence
Configuration

Program SelectExec group orderA
N/A allGroup Setup
1* GP-IB, USB, and RS-232C communication interfaces (when the IF-80GUR control board is installed).

2-11-3. Initialization
The Initialize window allows you to initialize the settings of the unit.
 For details about how to initialize the settings, see "5-3-12-4. Data Initialization".
When you initialize the settings, all the values are returned to their default settings. You will need to set up the unit again thenext time you use it.

2-12. Movement of the LSA-165V1 model
Because the input voltage enables an electric discharge to 0V, LSA-165V1 is equipped with switching power supply (power
supply for 0V) inside.Therefore, a noise, power consumption become bigger than LSA-165.
Ｗhen the “Bais On-Voltage” is set to “OFF”, the smallest movemnt voltage will be 1.5V as rated load (1V for LSA-165)
It is controlled in the ON/OFF timing of the power supply for 0V by hardware. When the input voltage is approx.1.5V or less,power supply for 0V will be turned on. When the input voltage is approx. 2V or more, the power supply for 0V will be turnedoff.
The ON voltage to set by “MENU” screen, becomes the beginning to use voltage of the power supply for 0V. ON/OFF
control with the hardware is performed until I set LOAD OFF when it is in an ON state once.
(attention)
Because a power supply for 0V becomes in condition that the voltage was output on a load terminal as for the state of ON,
the wiring of a load terminal and the remote sense might lead to trouble and the injury of the apparatus and is very indanger. Please work after confirming that the LOAD setting of this container becomes the OFF state by all means. Pleaserefer to an item of "0V electric discharge function" for the details of the setting movement.

6

3. Panel Parts
3-1. Front Panel(Picture: LSA-165)
Fig. 3-1 Front Panel
1Power switch: Turns the power on (｜) and off (○).

2

Rotary encoder: Inputs a number, selects a value, and moves the cursor in the menu window.

3

ESC key4

CURSOR key

5

LOAD key

6

ENTER key

: Cancels the currently entered operation. It is also used to return to the previous window.
Press and hold the ESC key to lock the keys.
Press and hold the ESC key again to unlock the keys.
If you press and hold the ESC key while in remote mode, the unit returns to local mode.
: Moves the cursor to input the individual digits of a number. It is also used to turn the page
when there are multiple pages.
: Switches between LOAD ON mode and LOAD OFF mode. The LOAD key lights up in red
when in LOAD ON mode.
Press the LOAD key again to switch to LOAD OFF.
: Fixes the settings values.
If you press and hold the ENTER key while the LCD display is off, the display will light up.

7

MENU key: Displays the menu window.

8

DIRECT keys

9

Handle: Perform the different selections that are assigned.
Select operation items in the main window.
A function is assigned to each selected key.
: Make sure to remove the handle when you mount the unit on a rack or other elevatedsurface.
Note that once you remove the handle cover, you cannot use it again.
When you reattach the handle, use screws with a torque of 1N·m to secure the handle.

10 LCD: Color liquid crystal panel. Displays the monitored values, statuses, and settings of the unit.

11 Front grill: Allows air to enter and cool the unit.

12 Front negative
input terminal
13 Front positive
input terminal
14 Rubber feet

Negative input terminal. Make sure to connect this terminal to the negative output of thepower supply source. The maximum input current is 66A.
Positive input terminal. Make sure to connect this terminal to the positive output of the:power supply source. The maximum input current is 66A.
: The four rubber pieces on the base plate of the unit.
Make sure to remove the feet when you mount the unit on a rack or other elevated surface.
:73-2. Rear Panel

15

22
21

16

20

J2

17

18

19
(Picture: LSA-165)
Fig. 3-2 Rear Panel15

AC inlet: The power cable supplied with the unit is inserted here.
The input voltage range is single-phase 100 to 240V AC, at a frequency of
50Hz/60Hz.

16

External control connector (J1) : External control connector.

17

External control connector (J2) : External control connector.

For the external control I/O connectors (J1 and J2), make sure to use the connector that is supplied with the unit
(OMRON: XG5M) and attach a semi-cover. The AWG26, AWG27, and AWG28 cables can be used for the connector
contact. Make sure to use the dedicated tool (OMRON: XY2B-7006) to crimp the cables.
For details about how to assemble the connectors, see “5-3-11-1. Assembling the J1 and J2 Connectors”.
18: Slot into which the IF-80GUR control board (optional) is inserted.

19

Control board slot
±S connector

20

Air exhaust: Ventilates the entire unit by allowing air to enter through front panel and exit
the rear panel.

21

Rear negative input terminal: Negative input terminal. Connect this terminal to the negative output of thepower supply source.

22

Rear positive input terminal: Positive input terminal. Connect this terminal to the positive output of thepower supply source.

! CAUTION: Used to compensate the voltage drop caused by the direct-current resistanceof the cable that connects the power supply source and the unit.

The exhaust vent can become very hot during operation.
Exercise care when handling the exhaust vent.

8

4. Getting Started
4-1. Connecting to a Power Supply Source
Make sure to observe the following points when connecting the power source:
 To firmly secure the connection, use a crimp terminal to connect the power supply source to the input terminal of
the unit (front input terminal: M8; rear input terminal of LSA-165/165V1/330: M6; rear input terminal of LSA-1000:
M10).
 Always use a load line that is capable of handling the specified current capacity that passes between the unit and2
the power supply source. When inputting a current of 200A, use a cable that is at least 100mm .
 To prevent the risk of personal injury when installing or removing the load line, always turn off the power supply
source and make sure the unit is in LOAD OFF mode.
 The LSA series is a line of electronic loads that can perform remote voltage sensing. Make sure to properly connect
the positive and negative connectors.
Failure to properly connect the positive and negative connectors for voltage remote sensing can lead to malfunction
and other problems with the unit, as well as problems with the power supply source.

4-2. Wiring Input Terminals
4-2-1. Connecting to the Rear Input Terminals
1. Cut off the edge of the rear input terminal cover supplied with the unit, and then pass the cables (used to connect tothe power supply source) through the cover.

For LSA-165/165V1/330, pass both cables (positive cableand negative cable) through the rear input terminal cover.

For LSA-1000, pass each cable (positive cable and negative
cable) through a separate rear input terminal cover.

Do not cut a large section off the edge of the cover.
Only a small section needs to be cut to allow the cables to pass through.
2. Use the supplied accessories (hexagon bolts, plain washers, hexagon nuts, and spring washers) to connect thecables (used to connect to the power supply source) to the terminals of the unit. Make sure the proper torque isapplied when tightening the accessories.
Table 4-1 Recommended Torque

LSA-165/LSA-165V1/LSA-330
Rear positive input terminal

Hexagon bolt
Rear positive
input terminal
Cable withcrimp terminal
Plain washer
Hexagon nut

LSA-165
LSA-165V1
LSA-330

Approx. 2.6N·m

LSA-1000

Approx. 12.5N·m

LSA-165/LSA-165V1/LSA-330
Rear negative input terminal
Hexagon nut
Plain washer
Cable withcrimp terminal
Rear negative
input terminal
Hexagon bolt

LSA-1000
Rear positive/negative input terminal

Hexagon nut
Spring washer
Plain washer
Cable withcrimp terminal
Rear
positive/negative
input terminal
Plain washer
Hexagon bolt

Fig. 4-1 Connecting to Rear Input Terminals
Use the supplied screw set to connect to the rear input terminals of the LSA-165, LSA-330, and LSA-1000, as
shown in the Fig. 4-1. Make sure to attach the parts correctly. Failure to correctly attach the parts can prevent therear inter-terminal cover from being properly attached.
9

3. Use the supplied (M3) screws to attach the rear input terminal cover.
<LSA-165 /LSA-165V1/LSA-330><LSA-1000>

There is only one rear input terminal cover for the
LSA-165 and LSA-330.
Use four screws to attach the cover.

!

CAUTION

The LSA-1000 has two rear input terminal covers.
Use four screws to attach each cover.

Always leave the rear input terminal covers attached to the rear terminals, even when
the terminals are not being used.

4-2-2. Connecting to the Front Input Terminals
The maximum rated current for the front input terminals is 66A. If the input current is greater than 66A, use the rear
input terminals.
<Using cables with crimp terminals>
Use a crimp terminal with an outer diameter of no more than 16.5mm and an inner diameter of at least M8.
Make sure the crimp section of the crimp terminal and the cable are covered with insulation, and that the mealpart is not exposed.
-side

+side

Cable

Attach the cable so that it comes out of thelarge notch of the input terminal cover.
Make sure the metal part of the crimp
terminal is fully covered.

Insulation seath
Front input
terminal cover
Front input
terminal knob

Large notch

Small notch

Fig. 4-2 Attaching a Cable with a Crimp Terminal
Firmly tighten the input terminal knob to prevent the cable from coming loose.
<Using cables without crimp terminals>
Strip the sheath off the cable and fully insert the wires into the hole on the front input terminal, as shown in the Fig. 4-3.

-side

+side

Attach the cable so that it comes out of thesmall notch of the input terminal cover.
Make sure the cable core is fully covered.

Cable core
Small notch

Front input
terminal cover
Front input
terminal knob

Large notch

Fig. 4-3 Attaching a Cable without a Crimp Terminal When using cables without crimp terminals, operate the unit at a current of no more than 5A.
 Fasten the front input terminal knob as tight as possible.
 Always leave the front input terminal covers attached to the front terminals, even when the front input terminals are notbeing used. When the terminals are not being used, attach the covers so that the smaller notch is on top.
10

4-3. Effect of Inductance on the Load Line
If the load line is too long, or if there is a large loop in the positive and negative cables, the inductance on the load line
will increase. If you operate the unit when there is a large inductance, the inductance on the wires generates a ringing
effect when you change the current. As a result, the voltage will fluctuate greatly, making the unit unstable. In addition,
the phase delay of the current might cause the unit to oscillate.
To prevent these problems from occurring, we recommend making the load line short and twisting it. You can reduce
the ringing effect of the current by setting "Load Response" to “Slow”.
When you use the switching function or sequence function, "Load Response" is fixed to "Fast". When you use thesefunctions, you cannot set "Load Response" to "Slow" to reduce the current ringing effect. In this case, make the load
line as short as possible.
* For details about how to set “Load Response”, see "Load Response Setting" in “5-3-12-3. System Setup”.

Make the line short＋＋
Power Supply
SourceLSA Series－－
Twist the line

Fig. 4-4 Twisting the Wires of the Load LineThe unit might oscillate if the load line that connects the power supply source and the unit is long, or if a device
with a large internal inductance, such as a motor, is connected. In this case, set “Load Response” to "Slow". If
necessary, connect a capacitor parallel to the load terminal of the unit to cancel out the inductance component.
When selecting the capacitor to be connected, make sure to carefully consider factors such as the withstand voltage
and ripple current.

＋＋＋

Power Supply
SourceLSA Series

C－

100μ to a few thousand μF－

Fig. 4-5 Using a Capacitor to Cancel the Inductance Component

11

4-4. Cleaning the Front Grill
Each product in the LSA series cools the internal parts by taking in air from the front grill and the front of the housing.
When the product is used continuously, dust and dirt will accumulate on the front grill and the front of the housing.
Make sure to clean the front grill and the front of the housing on a regular basis, using a vacuum to suck up all thedust.
The LSA-1000 comes with a detachable front grill. For details about removing the front grill and vacuuming it on aregular basis, see the following section: "4-4-1. Removing the Front Grill".
The front grills of the LSA-165, LSA-165V1 and LSA-330 are not detachable.

4-4-1. Removing the Front Grill
1. Remove the screws from the front grill.
2. Slide the front grill up.
The front grill is divided into four pieces. Repeat the same procedure for each piece.
3. There is a filter inside each piece of the front grill. Use a vacuum to suck up the dust and dirt.
When you reinsert each piece of the front grill, position the screw hole over the notch of the filter and insert thescrew.

2. Slide upward
Filter

ELECTRONIC LOAD

DIRECT

MENU

LOAD

ENTER
CURSORESC

LSA

DC INPUT

Notch

1. Remove the screw

Fig. 4-6 Removing the Front Grill!

CAUTION

The filter inside each piece of the front grill can be washed with water.
After you finishing washing the filters, allow them to dry completely.
Failure to do so can result in electric shock or unit malfunction.

12

4-5. Alarms
The following table describes the alarms that might be issued while the unit is running.
When an alarm is issued, turn off the power and fix the problem that caused the alarm to be issued. Do not turn on the
power until you have fixed the problem.
If the alarm is issued again after you fix the problem and turn the power back on, please contact our company’s service
center.
Table 4-2 Alarms
Alarm Message

Cause

Over Voltage Alarm

Issued when the input voltage is approximately 160V or higher. Switches
the unit to LOAD OFF mode.

Over Current Alarm

Issued when the input current exceeds the maximum rated current of theunit. Switches the unit to LOAD OFF mode.

Over Heat Alarm

Issued when internal temperature rises (when the temperature of theradiator rises to approximately 110°C) and causes the unit to overheat.
Switches the unit to LOAD OFF mode.

Reverse-connection Alarm

Issued when voltage is applied while the positive and negative terminals
are inverted. Switches the unit to LOAD OFF mode (if the unit is in LOAD
ON mode).

External Alarm

Issued when an alarm is sent from an external unit.

EEPROM Error

Issued when an error occurs while writing the settings values to theinternal ROM.

DSP Error

Issued when a communication error occurs in the internal DSP.

IF ErrorIssued when a communication error occurs on the external interface.

Front Over Current Alarm

Issued when the current applied to the front input terminal exceeds 66A.
Switches the unit to LOAD OFF mode. (This alarm is not issued by
LSA-165 ，LSA-165V1 and LSA-330.)

13

5. Basic Operations
This chapter describes the basic operations common to the products of the LSA series.

5-1. Power On
Before you use the unit, properly connect the power cable supplied with the unit and turn on the power switch locatedon the front panel.
When you turn on the power switch, the start window (left below) is displayed. Next, the main window appears, indicatingthat the unit is ready for operation.

ELECTRONIC LOAD
LSA-165

TEXIO TECHNOLOGY CORPORATION

Start window

Main window

Fig. 5-1

5-2. Basic Operations on the Operation Panel
The functions displayed in the main window can be selected by pressing the DIRECT keys. The corresponding
function icon (direct operation icon) is displayed to the left of each DIRECT key.
In addition to the functions displayed in the main window, you can specify other settings in the menu window. To
display this window, press the MENU key. The settings icons (menu icons) are displayed in the menu window.
Icon name
Direct operation icons

Menu icons

DIRECT keys

MENU key

Menu window

Main window

Fig. 5-2

14

5-2-1. Using the DIRECT Keys to Specify the Function Settings
In the main window, you can use the DIRECT keys displayed to the right of each direct operation icon to specify thesettings of the following functions.
Direct Operation
Icon

Main Setup

Direct Operation

Selected Function

Icon

Selected Function

Main Setup Function

LOAD ON/OFF Timer Setup Function

Specifies the operation mode, current range,

Specifies the LOAD ON/OFF timer.

and set values for the unit.

Timer
Soft Start

For details, see "5-3-1. Main Setup Function".

For details, see "5-3-4. Load Timer Function".
Soft Start Setup Function
Specifies the soft start voltage and time.
For details, see "5-3-5. Soft Start Function".

PresetProtect/Limit

Preset Function

Switching Function

Allows you to use the preset function.

Allows you to use the switching function.

For details, see "5-3-2. Preset Function".

Switching

For details, see "5-3-6. Switching Function".

Protect/Limit Value Setup Function

Sequence Function

Specifies the protect values and limit values.

Allows you to use the sequence function.

For details, see "5-3-3. Protective Functions".

Sequence

For details, see "5-4-4. Executing Sequences".

5-2-2. Using the Menu Icons to Specify the Function Settings
In the menu window, you can specify or confirm settings of the following functions by selecting the corresponding menu
icon.
Menu Icon

Selected Function

Menu Icon

Full Screen Monitor

External Control Setup

Displays the values in full screen mode.

Specifies the external control.

In this mode, only the ESC key and the LOAD

Full Screen
Monitorkey (LOAD OFF) can be used.

For details, seeExternal Setup

For details, see "5-3-12-1. Full Screen

Voltage or External Resistance
5-3-11-5. LOAD ON/OFF Control Via an

Status Display

External Contact Signal

Confirms the current setting status and5-3-11-6. C Range Control Via an External

operation status of the unit.

Contact Signal

For details, see "5-3-12-2. Status Display".
System Setup

Sequence Configuration

Specifies the display window, buzzer, display

Specifies the sequence programs.

units in CR mode, remote sensing, and current

System Setup

response.

For details, see "5-4. Sequence Function".

Sequence
Configuration

For details, see "5-3-12-3. System Setup".

Master/Slave

5-3-11-3. Specifying External Control
5-3-11-4. Set Value Control Via an External

Monitor".

StatusSelected Function

Master/Slave Setup

Data Initialization

Specifies the settings for master/slave parallel

Initializes the setup data and restores theoperation.

default settings.

For details, see "5-3-10. Master/Slave

Initialize

Operation Function".

For details about how to initialize data, see"5-3-12-4. Data Initialization".

15

5-2-3. Using the Operation PanelIn the main window, you can use the DIRECT keys to select functions and specify their settings. In the menu window, you
can use the menu icons to select parameters.
After you select a setup item or parameter, enter the value you wish to specify. You can also specify a value from thedrop-down list.

5-2-3-1. Using the DIRECT Keys to Specify the Function Settings
This example describes how to specify the settings of the main setup function.
(Procedure)
1

Press the DIRECT key next to the "Main Setup" icon todisplay the MAIN SETUP window.

Main window

1
The MAIN SETUP window is displayed.
The icons displayed in this window are different from theicons in the main window.
This window displays the DIRECT icons for the main setup
function.
You can only use the DIRECT keys of the DIRECT icons thatare highlighted in blue. You cannot use the DIRECT keys of
the icons that are highlighted in gray.

MAIN SETUP window
Input numbers

2

Press the "Main Value" DIRECT key in the MAIN SETUP
window.

 The DIRECT operation icon changes from blue to purple.
This indicates that the value (Val) for the corresponding
DIRECT key can now be entered.

Value ready to be entered2
3

Turn the rotary encoder to change the number.
The digit that can be changed is highlighted in black.
Turn the rotary encoder clockwise to raise the number, andChangeable digit

counter-clockwise to lower it.

3
4

Press one of the CURSOR keys to select a different digit.
Press the left key to move to the left, and the right key tomove to the right.

4

16

(Procedure)
5

Press the ENTER key (which is lit green) to confirm and enterthe value for "Val".

5

Selecting a value from the drop-down list

6

Press the "Mode" DIRECT key in the MAIN SETUP window.
The "Mode" icon changes from blue to purple and adrop-down list is displayed.
At this time, the ENTER key begins to flash green.

Drop–down list

6

7

Use the rotary encoder to select an operation mode for theunit from the drop-down list.
Turn the rotary encoder clockwise to move the cursor in the
direction of the red arrow, and counter-clockwise to move the7

cursor in the direction of the gray arrow.

17

(Procedure)
8

After you select an operation mode (CP mode is selected in
the figure on the left), press the green flashing ENTER key.
The value selected in operation 7 is set and entered.
The ENTER key stops flashing and turns off.
If you want to cancel the selected value and exit, press the
ESC key.
To successfully cancel the value, you must press the ESC

8

key before you press the ENTER key.

9

Press the ESC key to end the main setup function.
The main window is displayed.

Main window

918

5-2-3-2. Selecting a Menu Icon
This section describes how to select a menu icon.
(Procedure)
1

Press the MENU key to display the menu window.
Note that the MENU key can be used in all windows.

Main window

1
The menu window is displayed and the ENTER key begins toflash green.
The selected menu icon is framed in orange and the iconname is displayed at the top of the window.

Selected icon

Menu window

Icon name2

Use the rotary encoder to scroll through the icons.
Turn the rotary encoder clockwise to move the cursor in the
direction of the red arrow, and counter-clockwise to move thecursor in the direction of the gray arrow.

2
The figure in the left is for when the "Status" icon is selected.

19

5-2-3-3. Changing the Pages in the Menu Window
If the menu window is composed of multiple pages, you can use the CURSOR keys to change the pages.
The example provided in this section explains how to select the "Status" icon and display the Status window.
(Procedure)1

Select the "Status" icon in the menu window.
Press the green flashing ENTER key to display the Statuswindow.

Menu window

1
The Status window has 2 pages.
If the window is composed of multiple pages, "current page/total
pages" is displayed in the upper right corner of the window. The
arrow mark changes to yellow.

Status window 1/2

Current page/
total pages

2

Press the right CURSOR key to go to next page.
The next page is displayed on the Status window.
Press the left CURSOR key to go back to previous page.

Status window 2/2

2

3

Press the ESC key to close the Status window.
The menu window is displayed.

Menu window

3

4

Press the ESC key again to close the menu window anddisplay the main window.

Main window

420

5-2-3-4. Changing Parameters
The example in this section uses the System Setup window to describe how to select a menu icon and specify thecorresponding settings.
(Procedure)1

Select the "System Setup" icon in the menu window.
Press the green flashing ENTER key to display the System
Setup window.

Menu window

1
The System Setup window allows you to change theparameters.
Framed numbers or words are displayed to the right of theparameters that can be changed.
The name of the selected parameter is underlined, and thenumbers or words are highlighted in black.

System Setup window

Parameter selected
to be changed

Selecting a parameter2

Use the rotary encoder to select the parameter you want tochange.
Turn the rotary encoder clockwise to move the cursor in the
direction of the red arrow, and counter-clockwise to move the2

cursor in the direction of the gray arrow.

Input numbers
In the figure on the left, "Brightness" is selected as the parameter
whose value will be changed.

3

Press the ENTER key.
You can now change the "Brightness" value.

New value ready to be entered3

21

(Procedure)
4

Turn the rotary encoder to change the number.
The digit that can be changed is highlighted in black.
Turn the rotary encoder clockwise to raise the number, andcounter-clockwise to lower it.

Changeable digit

4
5

Press one of the CURSOR keys to select a different digit.
Press the left key to move to the left, and the right key tomove to the right.

5

6

Press the ENTER key.
The "Brightness" value is set and entered.

6
Selecting a value from the drop-down list

7

The following procedure describes how to specify thesettings shown in the drop-list for CR Unit Select.
Use the rotary encoder to select CR Unit Select as theparameter whose value will be changed.

7
8

Press the ENTER key. The drop-down list for the CR Unit
Select parameter is displayed.
At this time, the ENTER key begins to flash green.

89

Use the rotary encoder to select a parameter value (in thiscase unit).
Turn the rotary encoder clockwise to move the cursor in the
direction of the red arrow, and counter-clockwise to move the9cursor in the direction of the gray arrow.

22

(Procedure)
10

Press the ENTER key to set the parameter (in this case unit).
"S (Siemens)" is selected for CR Unit Select in the figure on
the left.

10
11

Press the ESC key to close the System Setup window.
The menu window is displayed.

Menu window

11
12

Press the ESC key again to close the menu window anddisplay the main window.

Main window

1223

5-3. Using Functions
This section describes the functions in the main window that can be specified by using the DIRECT keys.

5-3-1. Main Setup Function
Each model in the LSA series has four operation modes. In CC mode, you can also select a current-based restriction(+CC) or a resistance-based restriction (+CR).
The four operation modes are as follows:- CC mode (Constant Current mode)- CR mode (Constant Resistance mode)- CP mode (Constant Power mode)- CV mode (Constant Voltage mode)

5-3-1-1. Specifying the Constant Current (CC) Mode Settings
This section explains how to specify the settings for CC mode. The procedure consists of three main steps: Specifying theoperation mode → Specifying the current range → Specifying the current.
(Procedure)1

If the unit is in LOAD ON mode, press the LOAD key toswitch the unit to LOAD OFF mode.
The LOAD key light turns off.
Connect the power source to the unit.
Make sure the unit is in LOAD OFF mode when you connect
the power source.

2
2

Press the "Main Setup" DIRECT key in the main window todisplay the MAIN SETUP window.

1

Specifying the operation mode3

Press the "Mode" DIRECT key in the MAIN SETUP window.
At this time, the ENTER key begins to flash green.
The items that can be selected are displayed in the drop-down
list.

4

Turn the rotary encoder and select the operation mode youwant to use.

Drop–down list

"CC" mode (Constant Current mode) is selected in the

3

4

figure on the left.

5

Press the ENTER key to set the operation mode.
The ENTER key light turns off.

524

Specifying the current range(Procedure)
6

Press the "C Range" DIRECT key. The ENTER key begins
to flash green.
The current ranges that can be selected are displayed in
the drop-down list in the window.

7

Turn the rotary encoder and select the current range youwant to apply.
"H" is selected in the figure on the left.
The specifiable current ranges for each model are as follows:

LSA-165
Drop–down list

6

LSA-165V1

7

8

LSA-330

LSA-1000

H

0A to 33A

0A to 66A

0A to 200AM

0A to 3.3A

0A to 6.6A

0A to 20AL

0A to 330mA

0A to 660mA

0A to 2000mA

Press the ENTER key to set the current range.
The ENTER key light turns off.

8
Specifying the current

9

Specify the current value. Press the "Main Value" DIRECT
key.
The ENTER key flashes green. You can now enter the "Val"value.

10

Use the rotary encoder and CURSOR keys to specify thevalue.
The set value of the current is "10A" in the figure on the left.

Value ready to be entered

9

10
11

Press the ENTER key to finish specifying the current.
The ENTER key light turns off.

1125

5-3-1-2. Specifying the Constant Resistance Mode Settings (CRx1 / CRx10)
In CR mode, setting values are specified in step value, and the corresponding resistance value or conductance value
for each step value is displayed.
Conductance is the inverse of resistance. It is calculated by using the following formula:
Conductance = 1/Resistance
Conductance is measured in Siemens (S), and resistance is measured in Ohms (Ω).
You can select to display the conductance value or resistance value as the corresponding value for the step value.
The relationship between the step value and resistance is as follows: Resistance = 1/(setup resolution (S) x step value)
Step value: 1 to 61,500
There are two different CR modes: "CRx1" at 100% resistance, and "CRx10" at 1000% resistance.
The setup procedure consists of three main steps: Specifying the operation mode → Specifying the resistance range→ Specifying the step value(Procedure)
1

2
2

If the unit is in LOAD ON mode, press the LOAD key toswitch the unit to LOAD OFF mode.
The LOAD key light turns off.
Connect the power source to the unit.
Make sure the unit is in LOAD OFF mode when you connect
the power source.
Press the "Main Setup" DIRECT key in the main window todisplay the MAIN SETUP window.

1

Specifying the operation mode setup

3

Press the "Mode" DIRECT key in the MAIN SETUP window.
At this time, the ENTER key begins to flash green.
The items that can be selected are displayed in the drop-down
list.

4

Drop–down List

3

Turn the rotary encoder to select the operation mode youwant to use.
"CRx1" (CR mode at 100% resistance) is selected in the
figure on the left.

4“CRx1” and “CRx10”
When “CRx10” is selected, the specified resolution(conductance) is 1/10.
As a result, the resistance is shifted to a value that is 10
times greater than the specified resistance range. The
number of steps also becomes 10 times, allowing for amore specific value to be specified. However, the rated
current is also 1/10 when “CRx10” is selected.
Ex) Number of steps from 1.81kΩ to 181Ω in the Hrange (LSA-165)
CRx1: 1 to 10 steps
CRx10: 10 to 100 steps

5

Press the ENTER key to set the operation mode.
The ENTER key light turns off.

5

26

Specifying the resistance range(Procedure)
6

Press the "C Range" DIRECT key. The ENTER key begins
to flash green.
The resistance ranges that can be selected are displayed in thedrop-down list.

7

Turn the rotary encoder to select the resistance range youwant to apply.
"H" is selected in the figure on the left.

Drop–down List

6

7
8

Press the ENTER key to set the resistance range.
The ENTER key light turns off.

8
The set resistance ranges and set resolutions are as follows: The upper row indicates the set resistance range, and the lower row
indicates the set resolution.
Table 5-1

LSA-165/LSA-165V1

LSA-330

LSA-1000

OPEN, 1.81kΩ to 30.3mΩ

OPEN, 909Ω to 15.1mΩ

OPEN, 303mΩ to 5.05mΩ

0.55mS

1.1mS

3.3mS

OPEN, 18.1kΩ to 303mΩ

OPEN, 9.09kΩ to 151mΩ

OPEN, 3.03kΩ to 50.5mΩ

55μS

0.11mS

0.33mS

OPEN, 18.1kΩ to 303mΩ

OPEN, 9.09kΩ to 151mΩ

OPEN, 3.03kΩ to 50.5mΩ

55μS

0.11mS

0.33mS

OPEN, 181kΩ to 3.03Ω

OPEN, 90.9kΩ to 1.51Ω

OPEN, 30.3kΩ to 505mΩ

5.5μS

11μS

33μS

OPEN, 181kΩ to 3.03Ω

OPEN, 90.9kΩ to 1.51Ω

OPEN, 30.3kΩ to 505mΩ

5.5μS

11μS

33μS

OPEN, 1810kΩ to 30.3Ω

OPEN, 909kΩ to 15.1Ω

OPEN, 303kΩto 5.05Ω

0.55μS

1.1μS

3.3μS

CRx1
H
CRx10

CRx1
M
CRx10

CRx1
L
CRx10

27

Specifying the step value(Procedure)
9

Press the "Main Value" DIRECT key.
The ENTER key begins to flash green. You can now enter
the "Val" value.

10

Use the rotary encoder and CURSOR keys to specify thestep value.
The step value is "01818" and the resistance is "1.0001Ω" inthe figure on the left.

Value ready to
be entered

Resistancedisplay

9

10

The relationship between the step value, conductance, andTo specify the CR mode setting values, you must specify theresistance is as follows:

step value.

Conductance (S) = Step Value X Setup Resolution (S)Specify the step value by referring to the corresponding

Resistance (Ω) = 1/Conductance (S)conductance value or resistance value.
Toswitchbetweentheresistance(Ω)

conductance (S) display, press the MENU key,

displayand, CR Unit

Select, and then the ENTER key

11

Press the ENTER key to finish specifying the resistancevalue.
The ENTER key light turns off.

1128

5-3-1-3. Specifying the Constant Power (CP) Mode Settings
This section explains how to specify the Constant Power mode settings. The procedure consists of three main steps:
Specifying the operation mode → Specifying the power range → Specifying the power.
(Procedure)1

If the unit is in LOAD ON mode, press the LOAD key toswitch the unit to LOAD OFF mode.
The LOAD key light turns off.
Connect the power source to the unit.
Make sure the unit is in LOAD OFF mode when you connect
the power source.

2
2

Press the "Main Setup" DIRECT key in the main window todisplay the MAIN SETUP window.

1

Specifying the operation mode3

Press the "Mode" DIRECT key in the MAIN SETUP window.
At this time, the ENTER key begins to flash green.
The items that can be selected are displayed in the drop-down
list.

4

Turn the rotary encoder to select the operation mode youwant to use.
"CP" mode (Constant Power mode) is selected in the

Drop–down list

image on the left.

3

4
5

Press the ENTER key to set the operation mode.
The ENTER key light turns off.

529

Specifying the power range(Procedure)
6

Press the "C Range" DIRECT key. The ENTER key begins
to flash green.
The resistance ranges that can be selected are displayed in thedrop-down list.

7

Turn the rotary encoder to select the power range youwant to apply.
"H" is selected in the figure on the left.
The specifiable power ranges for each model are as follows:

LSA-165
Drop–down list

6

LSA-165V1

7

8

LSA-330

LSA-1000

H

0W to 165W

0W to 330W

0W to 1000W

M

0W to 16.5W

0W to 33W

0W to 100WL

0W to 1.65W

0W to 3.3W

0W to 10W

Press the ENTER key to set the power range.
The ENTER key light turns off.

8
Specifying the power value

9

Press the "Main Value" DIRECT key.
The ENTER key begins to flash green. You can now enter
the "Val" value.

10

Use the rotary encoder and CURSOR keys to specify thevalue.
The set power value is "10W" in the figure on the left.

Value ready to be entered

9

10
11

Press the ENTER key to finish the power setup.
The ENTER key light turns off.

1130

5-3-1-4. Specifying the Constant Voltage Mode Settings (CV+CC/CV+CR)
Each model in the LSA series has two CV modes: CV+CC mode and CV+CR mode.
CV+CC mode: An upper limit for the current is set. This value is used to limit the input current.
CV+CR mode: A lower resistance (= set voltage / input current) limit is set. This value is used to prevent the input
current from falling below the specified limit.
The procedure consists of the following steps: Specifying the operation mode → Specifying the voltage range →Specifying the response speed → Specifying the voltage → Specifying the limit range → Specifying the limit(Procedure)1

If the unit is in LOAD ON mode, press the LOAD key toswitch the unit to LOAD OFF mode.
The LOAD key light turns off.
Connect the power source to the unit.
Make sure the unit is in LOAD OFF mode when you connect
the power source.

2
2

Press the "Main Setup" DIRECT key in the main window todisplay the MAIN SETUP window.

1

Specifying the operation mode3

Press the "Mode" DIRECT key in the MAIN SETUP window.
At this time, the ENTER key begins to flash green.
The items that can be selected are displayed in the drop-down
list.

4

Turn the rotary encoder to select the operation mode youwant to use.

Drop–down list

In the image on the left, "CV+CC" mode is selected3

4

becausethe upper limit for the current is used in CV

mode.

5

Press the ENTER key to set the operation mode.
The ENTER key light turns off.

531

Specifying the voltage range(Procedure)

Drop–down list

6

6

Press the "V Range" DIRECT key. The ENTER key begins toflash green.
The voltage ranges that can be selected are displayed in thedrop-down list

7

Turn the rotary encoder to select the voltage range you want toapply. "15V" is selected in the figure on the left.
The specifiable voltage ranges are as follows:

7

150V range

0.10V to 150.00V

15V range

0.100V to 15.000V

8

Press the ENTER key to set the voltage range.
The ENTER key light turns off.

9

Press the "Rspns" DIRECT key. The ENTER key begins toflash green.
The "Response Speed" ranges that can be selected are displayedin the drop-down list.

10Turn the rotary encoder to select the response speed range
you want to apply.
"RSP1" is selected in the figure on the left.
The relationship between each response speed range and thepower supply source is described in the table below.
Select a response speed that fits the capacity of the power
supply source.
Power source with a relatively large electric
capacity (rated voltage that is at least 30%
RSP1
greater than that of the unit) and a
rapid-response CV and CC.
Power source with a relatively large electric
capacity (rated voltage that is at least 30%
RSP2
greater than that of the unit) but aslow-response CV and CC.
General power source.
RSP3
Power source with a relatively small electric
capacity (rated voltage that is 30% or less than
RSP4
that of the unit) and a rapid-response CV andCC.
Power source with a relatively small electric
capacity (rated voltage that is 30% or less than
RSP5
that of the unit) but a slow-response CV and CC.

11

Press the ENTER key to set the response speed.
The ENTER key light turns off.

8
Specifying the response speed

Drop–down list

9

10

11

32

Specifying the voltage(Procedure)
12

Press the "Main Value" DIRECT key. The ENTER key
begins to flash green.
You can now enter the "Val" value.

13

Use the rotary encoder and CURSOR keys to specify thevalue.
In the figure on the left, "5V" is specified as the voltage value.

Value ready to
be entered

12

13
14

Press the ENTER key to finish setting the voltage.
The ENTER key light turns off.

14
Specifying the limit range

15

Press the "C Range" DIRECT key. The ENTER key begins
to flash green.
The limit ranges that can be selected are displayed in thedrop-down list.

16

Turn the rotary encoder to select the response speed range
you want to apply.
"H" is selected in the figure on the left.
The specifiable limit range depends on the operation mode.

Drop–down list

15

CV+CC: The specifiable limit ranges are the same as those

16

for CC mode. For details about the specifiable current
ranges, see "5-3-1-1. Specifying the Constant Current (CC)Mode Settings".
CV+CR: The specifiable limit ranges are the same as those
for CR mode. For details about specifiable resistance ranges,
see "5-3-1-2. Specifying the Constant Resistance Mode
Settings (CRx1 / CRx10)".
Note that the specifiable ranges for CRx10 are not valid.

17

Press the ENTER key to finish setting the limit range.
The ENTER key light turns off.

17

33

Specifying the limit

18

Press the "Limit" DIRECT key.
The ENTER key begins to flash green. You can now enter
the "Lmt" value.

19

Use the rotary encoder and CURSOR keys to specify thelimit value.
In the figure on the left, "30A" is specified as the limit value.

Value ready to be entered.

18

19
20

Press the ENTER key to finish setting the current limit.
The ENTER key light turns off.

20
If the current/resistance limit function is enabled, the "Limit"
icon is displayed.
CV+CC mode
Current limit function isenabled

CV+CR mode
Resistance limit function
is enabled34

5-3-1-5. LOAD ON/OFF Function
When in CC, CR, or CP mode, you cannot switch to LOAD ON or LOAD OFF mode while the "Mode" or "C Range" icon is
selected. You can switch to LOAD ON or LOAD OFF while the "Main Value" icon is selected.
When in CV+CC or CR mode, you cannot switch to LOAD ON or LOAD OFF while the "Mode", "C Range", "V Range", or"Rspns" icon is selected. You can switch to LOAD ON or LOAD OFF while the "Main Value" or "Limit" icon is selected.
LOAD ON/OFF(Procedure)Turn on the output of the power supply source.

1

Press the LOAD key to switch the unit to LOAD ON mode.
The LOAD key lights up in red.
You cannot specify the operation mode or current range
while the unit is in LOAD ON mode.
The "Mode" and "C Range" icons turn gray.

1
2

Press the "Main Value" DIRECT key to specify the current
while the unit is in LOAD ON mode.
The ENTER key begins to flash green. You can now enter
the "Val" value.

2
3

Press the LOAD key to switch the unit to LOAD OFF mode.
The unit switches to LOAD OFF mode and the LOAD key
light turns off.

335

5-3-2. Preset Function
The preset function allows you to save specified values in the presets and recall them when needed.
You can save up to four items of preset data for each discharge mode and discharge range. These four items are labeled as"Preset 1", "Preset 2", "Preset 3", and "Preset 4". The values that are recalled from the presets are the values for thecurrently specified operation mode and range. Items of preset data can also be recalled when the unit is in LOAD ON mode.
The following table describes the values that can be saved for each operation mode.
Operation Mode

Saved DataCC

The specified values (current, resistance and power) for each current range.

CRx1
CRx10
CP
CV+CC
CV+CR

The specified voltages and current limits (+CC) or resistance limits (+CR) for
each voltage range and current range.

The following flow chart describes how the values change between the main window and the preset window.

Main WindowMode:A
C Range : B
V Range : C
Rspns:DMain Value : E
Limit
:F


Preset WindowMode:A
C Rang:B
V Range : C
Rspns:DMain Value : E
Limit
:F


Preset WindowMode:A
C Range : B
V Range : C
Rspns:DMain Value : E'
Limit
: F'


Main WindowMode:A
C Range : B
V Range : C
Rspns:DMain Value : E'
Limit
: F'

 When you switch from the main window to the preset window, the values displayed in the main window are specified as
the values for the unit.
 Only the values for "Main Value" and "Limit Value" can be specified in the preset window.
The other values displayed in the flow chart above cannot be specified.
 When you switch from the preset window to the main window, the values displayed in the preset window are specified
as the values for the unit.
The values for "Main Value" and "Limit Value" are different from the original values displayed the main window.

Press the "Preset" DIRECT key in the main window to display the preset window.

Main window

Preset Window"Preset" DIRECT key

Fig. 5-3

36

5-3-2-1. Changing the Set Value and Saving the Preset Data
(Procedure)
1

Press the "Value/Limit" DIRECT key in the preset window.
The ENTER key begins to flash green. You can now enter
the "Val" value.

2

Use the rotary encoder and CURSOR keys to change thesetting value.

2

1

3

Press the "Value/Limit" DIRECT key.
The ENTER key continues to flash green. You can now enter
the "Lmt" value.
The "Lmt" value can only be entered while in CV+CC modeor CR mode. It cannot be entered while in other operation
modes.

4

limit value.

4

3

Use the rotary encoder and CURSOR keys to change the5Press the DIRECT 1 key (the top key) to display "Save".
Each time you press the DIRECT 1 key, the icon changes.
The icons change in the following order: "Recall" → "Save"→ "Check" → "Recall".

5
6

Press the DIRECT key of the preset number to which you
want to save the data. "Preset 2" is selected in the figure on
the left.
When the data is finished saving, a message is displayed.
The saved preset data items are the value and limit that were
specified in operations 1 through 4 above.

Message is displayed whendata is finished saving.

637

5-3-2-2. Recalling Preset Data
This section explains how to recall the data saved to the presets.
(Procedure)
1

Press the DIRECT 1 key (the top key) to display "Recall".
Each time you press the DIRECT 1 key, the icon changes.
The icons change in the following order: "Recall" → "Save"→ "Check" → "Recall".

1
2

Press the DIRECT key of the preset number that contains thedata you want to recall.
In the figure on the left, "Preset 1" is selected and the data it
contains is recalled.
The recalled preset data is displayed in the window. The
values of the recalled preset data are specified as the valuesof the unit.

2

5-3-2-3. Checking Preset Data
This section explains how to check the values of data saved to the presets.
(Procedure)
1

Press the DIRECT 1 key (the top key) to display "Check".
Each time you press the DIRECT 1 key, the icon changes.
The icons change in the following order: "Recall" → "Save"→ "Check" → "Recall".

1
2

Press the DIRECT key of the preset number that contains thedata you want to check.
In the figure on the left, the data for "Preset 2" is displayed in
the dialog box.
The data values displayed in the dialog box are not the data
values currently specified as the values of the unit.

238

5-3-3. Protective Functions
The protective functions are features designed to protect the power supply source and the unit. When a problem occurs thatmight affect the power supply source or disrupt the operation of the unit, the protective functions are used to switch the unit to
LOAD OFF mode or limit the input. You can specify detection values that determine when these functions are enabled.
There are two types of protective functions for overcurrent and overpower: one function that switches the unit to LOAD
OFF mode (protect), and one function that restricts the input (limit). You can select one of these protective functions.
The protective functions are as follows:
UVP:

Under Voltage Protection

OCP/OCL:

Over Current Protection / Over Current Limit

OPP/OPL:

Over Power Protection / Over Power Limit

Press the "Protect/Limit" DIRECT key in the main window to display the PROTECT/LIMIT window.

Main window"Protect/Limit" DIRECT key

PROTECT/LIMIT window

Fig. 5-4

39

5-3-3-1. UVP Function
The UVP function can be used in CC/CR/CP discharge modes.
Operation of the UVP function
When voltage is applied to the unit and it is switched to LOAD ON mode, electrical current begins to flow through the unit
(T1). If the initial voltage applied to the unit is lower than the UVP value, the UVP function is not enabled.
If the initially applied voltage is higher than the UVP value and then later falls below that value, the UVP function isenabled and the unit is switched to LOAD OFF mode (T2).
Once the UVP function is enabled, even if the applied voltage rises above the UVP value again, the unit remains in LOAD
OFF mode (T3).
To switch the unit to LOAD ON mode, press the ESC key to disable the UVP function. After you disable the UVP function,press the LOAD key (T4).
Applied voltage
Specified UVP Value

Load Current

T1

T2

T3

T4

Fig. 5-5Specifying the UVP value(Procedure)
1

Press the "UVP" DIRECT key.
The ENTER key begins to flash green. You can now enter
the "UVP" value.

2

Use the rotary encoder and CURSOR keys to change the
UVP value.

3

1

3

2

40

Press the ENTER key to finish setting the UVP value.

5-3-3-2. OCP/OCL Functions
The OCP and OCL functions can be used in CR/CP/CV+CR operation modes.
Operation of the OCP and OCL functions
If a large discharge value is specified for the unit, or if the applied voltage from the power supply source is changed, theload current increases. However, if the load current is lower than the specified OCP or OCL value, the OCP and OCL
functions are not enabled (T0-T1).
If the OCP function is set, the function switches the unit to LOAD OFF mode when the specified current is detected (T1).
If the OCL function is set, the running current will be limited to the specified value (T1-T2).
Load Current
OCP Valueor
OCL Value
Load current when OCL is specified
Load current when OCP is specified
T0

T1

T2

Fig. 5-6
Specifying the OCP and OCL functions(Procedure)
1

Press the "OCP" DIRECT key to set the overcurrent
protection.
The ENTER key begins to flash green. You can now enter
the "OCP" value. "OCL" is displayed as "Off".

1

2

Press the "OCL" DIRECT key to set the overcurrent limit.
The ENTER key begins to flash green. You can now enter2

the "OCL" value. "OCP" is displayed as "Off".
The OCP and OCL functions cannot be used at the sametime. You can only choose one of the functions.

When specifying OCPWhen specifying OCL

3

Use the CURSOR keys to change the input digits. To change
the OCP value or OCL value, use the rotary encoder.
In the figure on the left, "15A" is specified for OCP and OCL
is set to "Off".

4

Press the ENTER key to set the OCP or OCL value. The
ENTER key light turns off.

4

3

41

5-3-3-3. OPP and OPL Functions
The OPP and OPL functions can be used in CC/CR/CV+CC/CV+CR operation modes.
Operation of the OPP and OPL functions
If a large discharge value is specified for the unit, or if the applied voltage from the power supply source is large, the load
current increases. However, if the load current is lower than the specified OPP or OPL value, the OPP and OPL functions
are not enabled (T0-T1).
If the OPP function is set, the function will switch the unit to LOAD OFF mode when the specified power is detected (T1).
If the OPL function is set, the running power will be limited to the specified value (T1-T2).
Load PowerOPP Valueor
OPL Value
Load power when OPL is specified
Load power when OPP is specified
T0

T1

T2

Fig. 5-7
Specifying the OPP and OPL functions(Procedure)
1

Press the "OPP" DIRECT key to set the overpowerprotection.
The ENTER key begins to flash green. You can now enter
the "OPP" value. "OPL" is displayed as "Off".

1

2

Press the "OPL" DIRECT key to set up the overpower limit.
The ENTER key begins to flash green. You can now enter
the "OPL" value. "OPP" is displayed as "Off".

2

The OPP and OPL functions cannot be used at the sametime. You can only choose one of the functions.

When specifying OPPWhen specifying OPL

3

Use the CURSOR keys to change the input digits. To change
the OPP value or OPL value, use the rotary encoder.
In the figure on the left, "100W" is specified for OPP and OPL
is set to "Off".

4

Press the ENTER key to set the OPP or OPL value. The
ENTER key light turns off.

4

3

42

5-3-3-4. Canceling the Protect and Limit Functions

Canceling the protect function(Procedure)
When a protect function is enabled, the corresponding icon isdisplayed. The ESC key begins to flash green and the unit
will be switched to LOAD OFF mode. (The LOAD key lightturns off.)
You cannot switch the unit to LOAD ON mode while the"UVP" icon is displayed.

1

Press the green flashing ESC key. The protect icons
disappear and the ESC key light turns off.

Protect Icons
UVP, OCP, and OPP

1

2

2

Confirm that the protect icons are no longer displayed, andthen press the LOAD key again to switch the unit to LOAD
ON mode.

Canceling the limit function(Procedure)
When the limit function is enabled, the "Limit" icon isdisplayed and the current runs through the unit at the
specified limit value. The unit remains in LOAD ON mode.
To cancel the OCL function, specify a lower discharge current
limit value for the unit, or change the voltage applied from thepower supply source.
When in CP mode, the higher the voltage applied to the unit
is, the lower the current is.
When in CR mode, the lower the voltage applied to the unit

OCL iconis, the lower the current is.
To cancel the OPL function, specify a lower discharge current
limit value for the unit, or lower the voltage applied from thepower supply source.

OPL icon43

5-3-4. Load Timer Function
Each model in the LSA series is equipped with two load timer functions: load-on timer and load-off timer.
The load-on timer is to specify the amount of time that elapses from when the LOAD key is pressed until the unit enters
LOAD ON mode.
The specifiable time range is from 1 second to 9999 hours 59 minutes 59 seconds.
The load-off timer specifies the amount of time that elapses between when the LOAD key is pressed until the unit enters
LOAD OFF mode.
The specifiable time range is from 1 second to 9999 hours 59 minutes 59 seconds.
Load-on timer
Specified time for the load-on timer
Load current

LOAD Key ON

Time
LOAD ON

Load-off timer
Specified time for the load-off timer
Load current

Time
LOAD Key ON

LOAD OFF

Fig. 5-8

To specify settings of the load timer function, press the "Timer/Soft St" DIRECT key in the main window to display the
TIMER/SOFT START window.

Main window

Timer/Soft St DIRECT Key
Fig. 5-9

44

TIMER/SOFT START window

5-3-4-1. Specifying the Load Timer SettingsSpecifying the load timer settings(Procedure)1

To specify the load-on timer settings, press the "ON Timer"
DIRECT key.

1

The ENTER key begins to flash green. You can now enter
the "On Timer" value. "Off Timer" is displayed as "off".

2

2

To specify the load-off timer settings, press the "OFF Timer"
DIRECT key.
The ENTER key begins to flash green. You can now enter
the "Off Timer" value. "On Timer" is displayed as "Off".

When specifying the load-on timer
settings
When specifying the load-off timer
settings

The load-on timer and the load-off timer cannot be used at
the same time.
If you specify 0 sec for the load-on time or load-off timer, theload timer function turns off.

3

Use the CURSOR keys to change the input digits. To change
the set time, use the rotary encoder.

4

4

Press the ENTER key to finish setting the load timer values.

5

Press the LOAD key. The LOAD key begins to flash red and3

the time counter starts counting.
The timer icon and time counter are displayed while the load
timer is enabled.
If you press the flashing red LOAD key (while the load timer
is enabled), the timer stops. The LOAD key light turns off,
and the unit switches to LOAD OFF mode.
Time Counter icon

Timer icon

545

5-3-5. Soft Start Function
The Soft Start function can only be specified while in CC discharge mode.
If you switch the power supply source to OUTPUT ON mode while the unit is in LOAD ON mode, an overcurrent that
greatly exceeds the rated current will flow through the unit (T0-T1).
When an overcurrent occurs, the protection circuit might start running on certain power supply sources. As a result, it will
be impossible to raise the voltage.

Applied voltage

Load current

Time
T0

T1

Without Soft Start Function ActivatedFig. 5-10
When the Soft Start function is enabled, the unit does not apply current until the applied voltage from the power supply
source reaches the soft start voltage (T0-T1). When the applied voltage from the power supply source reaches the Soft
Start voltage, the unit begins to apply current. The unit takes the specified amount of time (Soft Start time) and applies
current until the specified current value is reached (T1-T2). By using the Soft Start function, you can apply current withoutworrying about exceeding the specified current.
When the applied voltage from the power supply source falls below the Soft Start voltage (T3), the unit stops applying
current.
When the applied voltage from the power supply source reaches the Soft Start voltage again (T4), the unit begins to apply
current. The unit takes the specified amount of time and applies current until the specified current value is reached(T4-T5).

Applied voltage
Load current
Soft start voltage

Time
T0

T1

T2

T3

T4

T5

With Soft Start Function ActivatedFig. 5-11

46

The Soft Start function becomes off when the Soft Start start voltage set in "OFF".
Ｓet it in "OFF", the getting started of the setting electric current rise become sharp, and a voltage descent depending on asetting electric current occurs by an inductance ingredient of the wiring, and big overshot and ringing may occur. Pleasewire it so that you twist wiring length to electronic load briefly, and an inductance ingredient becomes small. The load reply
is set in Slow with the factory default, but when overshot and ringing become the problem, you set an appropriate soft startlevel, and please use it.
To specify the Soft Start function, press the "Timer/Soft St" DIRECT key in the main window to display the TIMER/SOFT
START window.

Main window

Timer/Soft St DIRECT key
Fig. 5-12

47

TIMER/SOFT START window

5-3-5-1. Specifying the Soft Start Function Settings
When you use the soft start function, you must specify the soft start voltage and the soft start time.
Specifying the soft start voltage(Procedure)
1

Press the "Soft Start V" DIRECT key in the TIMER/SOFT
START window.
The ENTER key begins to flash green. You can now enter
the "Soft St" value.

2

Use the CURSOR keys to change the input digits. To change
the soft start voltage, use the rotary encoder.
In the figure on the left, "13V" is specified for the soft start
voltage.

1

3

3

2

Value ready to be entered

Press the ENTER key to finish setting the soft start voltage.
The ENTER key light turns off.

Specifying the soft start time4

Press the "Soft Start T" DIRECT key in the TIMER/SOFT
START window.
The ENTER key begins to flash green. The drop-down list for
specifying the "Soft St" time is displayed.

5

Use the rotary encoder to change the soft start time.
In the figure on the left, "10ms" is specified for the soft start
time.

6

4

Drop–down list

6

5

Press the ENTER key to set the soft start time. The ENTER
key light turns off.

7

Press the LOAD key to switch the unit to LOAD ON mode(the LOAD key lights up in red) to apply the voltage from thepower supply source.

7

Ｔurn off a Soft Start function（操作手順）
1

Ｐush the "Soft Start V" Direct key with "Timer software startsetting window"
ENTER key turns on a green point and value ready toentered.

2

Turn a rotary encoder to the left, and please change theSoftstart start voltage setting to "off".

3

ENTER key turns off the light when push the ENTER key andfinishes soft start start voltage setting operation.

Value ready to be entered

1

3

2

48

5-3-6. Switching Function
The switching function (SW function) is used to execute two set values (main value and sub value) sequentially andrepeatedly. This function can be used in all operation modes.
The switching types are described in the following diagram. There are three switching types: frequency and duty, dual time,and external signal.
The settings for the parameters described in the diagram can also be specified.
See "5-3-6-3. Specifying the Main Value and Sub Value Settings".
See "5-3-6-5. Specifying the Frequency and Duty".
See "5-3-6-6. Specifying theDual Time Switching Settings".
FREQ (Hz)Sub Time (s)Main Time (s)DUTY (%)

See "5-3-11-7. Switching
Control Via an External Contact
Signal".
Rear J1 connector: 8, 9 pin
Close
Open

Main
Value

Sub
Value
Slew Rate(A/s)

Slew Rate(A/s)

Slew Rate(A/s)

Slew Rate(A/s)

Slew Rate(A/s)

External Signal

Dual Time

Frequency and Duty

Slew Rate(A/s)

See “5-3-6-2. Specifying the Switching Type”.
See "5-3-6-4. Specifying the Slew Rate and Response".

Fig. 5-13
In the figure above, the value of “Main Value” is specified to be greater than that of “Sub Value”. However, you can also
specify for the value of “Main Value” to be less than or equal to that of “Sub Value”
The value for “Slew Rate” cannot be specified in CV mode. Only the value for “Response” can be specified.
The following flow chart describes how the values change between the main window and the SWITCHING window.

Main windowMode:A
C Range:B
V Range:C
Rspns:D
Main Value :E
Sub Value :--Limit:G
SWITCHING
windowMode:A
C Range:B
V Range:C
Rspns:D
Main Value :E
Sub Value :F
Limit
:G


SWITCHING
windowMode:A
C Range:B
V Range
:C
Rspns
:D'
Main Value :E'
Sub Value :F'
Limit
:G


Main windowMode:A
C Range:B
V Range
:C
Rspns
:D'
Main Value :E'
Sub Value :--Limit:G When you switch from the main window to the SWITCHING window, the values displayed in the main window are
specified as the values for the unit.
 Only the values for "Rspns", "Main Value", and "Sub Value" can be specified in the SWITCHING window.
The other values displayed in the flow chart above cannot be specified.
 When changing from the SWITCHING window to the main window, values displayed on the SWITCHING window are
set up on the unit. When you switch from the SWITCHING window to the main window, the values displayed in the
SWITCHING window are specified as the values for the unit.
The values for "Rspns" and "Main Value" are different from the original values displayed in the main window.
The value for “Sub Value” is not displayed in the main window.

49

Press the "SW" DIRECT key in the main window to display the SWITCHING window and set up the switching function.

Main window

SWITCHING window"SW" DIRECT key
Fig. 5-14

5-3-6-1. Using the Switching Function
This section provides an overview of the switching function. For details about the individual operations, see thecorresponding explanations in the following sections.
(Procedure)
1

In

the

menu

window,

select“System

Setup”

andthen ”Switching Type”. Next, select the switching type youwant to use.
For details about how to select the switching type, see"5-3-6-2. Specifying the Switching Type".

2

In the SWITCHING window, specify the values for “MainValue” and “Sub Value” (switching function parameters).
For details about how to specify these values, see "5-3-6-3.
Specifying the Main Value and Sub Value Settings".

3

Specify the switching response parameters.
When in CC, CR, or CP operation mode, specify the “SlewRate” value.
When in CV+CC or CV+CR operation mode, specify the“Response” value.
For details about how to specify these values, see "5-3-6-4.
Specifying the Slew Rate and Response".

4

Specify the switching time parameters.
If the switching type is "Frequency and Duty", specify thevalues for “Freq” and “Duty”.
For details about how to specify these values, see "5-3-6-5.
Specifying the Frequency and Duty".
If the switching type is "Dual Time", specify the values for“Main Time” and “Sub Time”.
For details about how to specify these values, see "5-3-6-6.
Specifying the Dual Time Switching".

50

(Procedure)
5

Each time you press the DIRECT 1 key (the top key), theicon changes. The icons change in the following order:"Main" → "Main⇔Sub" → "Sub" → "Main".
Display the "Main" icon. When this icon is displayed, thevalue set for "Main Value" is specified on the unit.

5

6

When you apply voltage to the unit and switch it to LOAD ON
mode, the current specified for "Main Value" in operation 2
begins to flow through the unit.

6

7

Press the DIRECT 1 key and display the "Sub" icon.
When this icon is displayed, the value set for "Sub Value" isspecified on the unit.
The current specified for "Sub Value" in operation 2 begins toflow through the unit.

7

8

Press the DIRECT 1 key to display the "Main⇔Sub" icon.
When this icon is displayed, the unit begins to perform
switching.
If "Frequency and Duty" or "Dual Time" is selected as theswitching type, the values for “Main Value” and “Sub Value”
are switched based on the switching time parameter
specified in operation 4.

8

If "External Signal" is selected, the values for “Main Value”
and “Sub Value” are switched based on the status of the J1
connectors (8 and 9) located on the back of the unit.

The values you specified in operations 2 through 4 (“Main Value”, “Sub Value”, switching response parameter, andswitching time parameter values) can all be changed in operation 8.

51

5-3-6-2. Specifying the Switching Type
(Procedure)
1

1

When the unit is in LOAD OFF mode, press the MENU key todisplay the menu window.

2
2

Turn the rotary encoder and select the "System Setup" iconin the menu window.

3

Press the ENTER key to display the System Setup window.

4

Turn the rotary encoder and select "Switching Type".

5

Press the ENTER key. A drop-down list is displayed.

6

Turn the rotary encoder to select the switching type you want

3

4

to use (the currently selected type is highlighted in black).
If you use frequency and duty, select "Freq/Duty".
System Setup window

Drop–down list

5

If you use dual time, select "Time".

6

If you use external signals, select "Ext".

7

Press the ENTER key.
The green flashing ENTER key light turns off, and theswitching type is specified.
In the figure on the left, "Time" (dual time) is specified as theswitching type.

7

8

8

52

Press the ESC key twice to return to the main window.

5-3-6-3. Specifying the Main Value and Sub Value Settings
This section describes how to specify the values for "Main Value" and "Sub Value".
(Procedure)
1

Press the "Main Value" DIRECT key in the SWITCHING
window.
The ENTER key lights up in green. You can now enter the"Main" value.
Before changing the value, make sure the value you
specified in the main window is displayed as the "Main"value.

2
Value ready to be entered1

Use the CURSOR keys to change the input digits. To changethe "Main" value, use the rotary encoder.

2

3

Press the "Sub Value" DIRECT key.
The ENTER key lights up in green. You can now enter thevalue for "Sub Value".

4

Use the CURSOR keys to change the input digits. To change
the value of "Sub Value", use the rotary encoder.

5

Value ready to be entered3

5

Press the ENTER key to finish setting the values.

45-3-6-4. Specifying the Slew Rate and Response
The switching response parameter that can be specified depends on the operation mode.
The slew rate can be specified in CC/CR/CP operation modes.

(Procedure)
1

Press the "Slew Rate" DIRECT key in the SWITCHING
window.
The ENTER key lights up in green. You can now change the"Slew Rate" value.

Value ready to be changed

1

3

2

Use the rotary encoder to select a value for "Slew Rate".

3

Press the ENTER key to finish setting the value.

2

The response can be specified in CV+CC/CV+CR operation(Procedure)modes.

1

Press the "Rspns" DIRECT key in the SWITCHING window.
The ENTER key begins to flash green and a drop-down list isdisplayed.

Drop–down list

1

3

2

53

2

Use the rotary encoder to select a value for "Response".

3

Press the ENTER key to finish setting the value.

5-3-6-5. Specifying the Frequency and Duty
The frequency and duty can only be specified when "Frequency and Duty" is selected as the switching type.
When you use the unit to perform switching, the values of “Main Value” and “Sub Value” are switched at a 10μs interval of
integral multiplication. This interval is based on the circuit specifications of the unit.
For this reason, when you change the frequency or duty ratio, there are certain numbers that cannot be entered as the
input digits.
While the frequency is being changed, an asterisk (*) is displayed to the right of the duty ratio. The asterisk indicates thatthe duty ratio might change after the frequency is changed.
When you finish setting the frequency, the asterisk (*) disappears and the duty ratio closest to the value before thefrequency was changed is specified.
Ex) A frequency of 200Hz and duty ratio of 50.0% are specified, and then the frequency is changed to 300Hz.
"50.0%" is displayed as the duty ratio before the frequency is changed.
The displayed duty ratio changes to "50.0%*" while the new frequency is being specified.
When you finish setting the frequency, the displayed duty ratio changes to "50.1%*".
(Procedure)
1

Press the "Freq" DIRECT key in the SWITCHING window.
The ENTER key lights up in green. You can now enter "Freq"
value.

An asterisk (*) is displayed to the right of the "Duty" value.
2

Use the CURSOR keys to change the input digits. To change
the frequency, use the rotary encoder.

Value ready to
be entered"*" is displayed

2

1

In the figure on the left, "10Hz" is specified for the frequency.

3

Press the "Duty" DIRECT key in the SWITCHING window.
The ENTER key lights up in green. You can now enter the"Duty" value.

4

Use the CURSOR keys to change the input digits. To change
the duty ratio, use the rotary encoder.
In the figure on the left, "60.0%" is specified for the "Duty"
value.

Value ready to be entered

3

5

5

4

Press the ENTER key to finish setting the frequency and duty
ratio.

54

5-3-6-6. Specifying the Dual Time Switching
The dual time settings can only be specified when "Dual Time" is selected as the switching type.
(Procedure)
1

Press the "Main Time" DIRECT key on the SWITCHING
window.
The ENTER key lights up in green and "Main Time" value.

2

Use the CURSOR keys to change the input digits. To changethe "Main Time" value, use the rotary encoder.
In the figure on the left, "05.00ms" is specified for the "MainValue ready to be entered

1

Time" value.

2

3

Press the "Sub Time" DIRECT key on the SWITCHING
window.
The ENTER key lights up in green. You can now enter the"Sub Time" value.

4

Use the CURSOR keys to change the input digits. To changethe "Sub Time" value, use the rotary encoder.
In the figure on the left, “10.00ms" is specified for the "Sub

Value ready to be entered3

3Time" value.

4

5

55

Press the ENTER key to finish setting the values.

5-3-7. Remote Voltage Sensing Function
In the products of the LSA series, an internal point or ±S connector can be specified as the voltage detection point.
The current runs through the load line that connects the power supply source to the unit. However, this current causes anelectric potential difference to occur between the power supply source and the unit.
If an internal point of the unit is specified as the voltage detection point, the voltage detected by the unit is as low as theelectric potential difference from the actual power supply output voltage.
When CR or CP is selected as the operation mode, the electric potential difference prevents the current from running at
the specified value (the current runs at the wrong value). When CV+CC or CV+CR is selected as the operation mode, thevoltage from the power supply source is larger than the specified voltage, thereby creating an electric potential difference.
To compensate for this difference, you can connect the power supply source to the ±S connector that serves as thevoltage detection point. In addition to compensating for the difference, this also allows you to run the same level of current
as that of the unit, as well as equalize the voltage of the power supply source and the set voltage of the unit.

5-3-7-1. Connecting the Sensing Cables
Power Supply Source Connection Diagram
Positive load cable++
Power supply source

Negative load cable

LSA Series

-

-

+S
-S
Twist the sensing cables ifthey become too long.

Negative sensing cable

Positive sensing cable

Fig. 5-15
Very little current is actually applied to the voltage remote sensing cables. However, it is important to use cables capableof withstanding the voltage that is output by the power supply voltage. We recommend using cables with twisted
AWG24-28 wires.
Strip approximately 10mm off the sheath of each cable, and then solder the conductor to prevent the wires fromunraveling.
Before you connect the sensing cables to the ±S connectors on the rear panel of the unit, make sure to switch the power
supply source to OUTPUT OFF mode, and to switch the unit to LOAD OFF mode.
Push and hold the ±S connector tab, then insert the cable into
the hole to the left of the tab.
Push the tab.
Insert the positive sensing cable into the top hole, and thenegative sensing cable into the bottom hole.
Make sure to correctly connect the positive and negative
sensing cables, as well as the positive and negative load
cables. If you inversely connect the cables, the unit or power
supply source might become damaged.
Voltage is applied to the positive and negative sensing cablesfrom the power supply source.
There is very little space between the ±S connectors (areaPositive sensing cable

circled in red in the figure on the left). Exercise care whenhandling the positive and negative cables, making sure theconductors do not make contact.
If the conductors of the positive and negative sensing cables

Negative sensing cablemake contact, the sensing cables might burn or the power
supply source might become damaged.

56

5-3-7-2. Specifying the Voltage Detection Point(Procedure)
1

Press the MENU key while the unit is in LOAD OFF mode.
The ENTER key begins to flash, and the menu window isdisplayed.

2

Turn the rotary encoder and select the "System Setup" icon.

3

Press the ENTER key.
The System Setup window is displayed.

Menu window

1

3

2

4

Turn the rotary encoder and select "Remote Sensing" in the
System Setup window.

System Setup window

3

5

Press the ENTER key. A drop-down list is displayed.

6

Use the rotary encoder to select "Int" or "Ext" from the4drop-down list.
If you select "Int", a point inside the unit is specified as thevoltage detection point.
If you select "Ext", the ±S connectors of the unit are specified
as the voltage detection points.

Drop–down list

6

7

Press the ENTER key.
The ±S connectors are specified as the voltage detection
points in the figure on the left.

7

8

Press the ESC key twice. The main window is displayed.
If the ±S connectors are specified as the voltage detection
points, the "SENS" icon is displayed.
However, if a point inside the unit is specified as the voltage
detection unit, the "SENS" icon is not displayed.

SENS icon

857

5-3-8. Key Lock Function
This function is used to lock the keys in all operation modes other than LOAD OFF mode.
(Procedure)Turn off the output of the power supply source.

1

Press the LOAD key to switch the unit to LOAD ON mode.
The LOAD key lights up in red.

1

2

Press and hold the ESC key.
The ESC key lights up in green and the keys are locked.
The key lock icon is displayed, and all of the DIRECT
operation icons become blank.

2

In this state, the only operations that can be performed areswitching the unit to LOAD OFF.

Key lock icon

Blank

3

Press and hold the green flashing ESC key again to unlock
keys.
The ESC key light turns off and the keys are unlocked.

3

If you are using the IF-80GUR control board (optional) to
remotely control the unit, press and hold the ESC key toswitch the unit to local control.

58

5-3-9. Screen Saver Function
This function is used to turn off the display after none of the keys have been used for more than 10 minutes.
(Procedure)
1

Enable the screen saver function (set the function to "On").
For details on how to enable the screen saver function, see"5-3-12-3. System Setup".
Make sure the unit is in LOAD ON mode, as shown in the
figure on the left.

2

The display turns off after none of the keys have been
operated for more than 10 minutes.
The ESC key begins to flash green. The other key lights turnoff and can no longer be used.
There is no change to LOAD key before and after the display
turns off.
In this state, the only operations that can be performed areswitching the unit to LOAD OFF mode or turning the display
back on.

3

Press the green flashing ESC key to turn on the display.
The ESC key light turns off and the display lights up.
You can now use all the keys.

359

5-3-10. Master/Slave Operation Function
Each model in the LSA series can perform parallel operation via master/slave connection.
The same model as the master unit can be used as the slave unit. In addition, a booster unit (scheduled for release) can
also be used as a slave unit. Up to four slave units can be connected at one time.
A model that is different from the master unit cannot be used as a slave unit.
In addition, units that are of same model as the master unit cannot be used together with booster units as slave units.

5-3-10-1. Connecting the Units for Master/Slave Operation
Master/Slave Connection Diagram+S-S
Positive sensing cable+

Negative sensing cable

LSA Series
Master unit

If the voltage sensing function isenabled, make sure to the ±S
connectors of the master unit.

-

+

J2

LSA Series
Slave unit 1

+

+

-

-

Positive load cable+

Negative load cable-

During parallel operation, use positive and negative
cables that can withstand the current.
In addition, try to equalize the electrical potential
differences between the power supply source andeach LSA series units. If there is a discrepancy
between the electrical potential differences, thespecified current and the actual current might differ
greatly.

The settings of the terminal slave unit in themaster/slave connection need to be specified.
For details about how to specify the settings, see"Specifying the Terminal Slave Unit Settings" in"5-3-10-3. Specifying the Slave Unit".

+

-

J1
J2

-

Power
supplysourceJ1

LSA Series
Slave unit 2

J1J2

LSA Series
Slave unit 3

J1J2

LSA Series
Slave unit 4

J1
J2

Optional connection kit: OP-22P
You can use the OP-22P to connect the master unit to a slaveunit, or connect a slave unit to an adjacent slave unit, as shown in
the figure above.
One OP-22P is required for each slave unit.
Thus, if there are four slave units, four OP-22Ps are required.

Fig. 5-1660

5-3-10-2. Specifying the Master Unit
To specify the unit as the master unit, you must first switch the unit from "Alone" (independent operation) to "Master"(master unit for master/slave operation).
Next, specify the number of slave units that are connected to the master unit (parallel connection), as well as the slave unit
types.
When you cancel independent operation and specify the unit as the master unit, you must power off the unit and thenrestart it. At this time, the settings data of the unit is initialized.
(Procedure)
1

Press the MENU key while the unit is in LOAD OFF mode.
The ENTER key begins to flash and the menu window isdisplayed.

2

Turn the rotary encoder and select the Master/Slave icon.

3

Press the ENTER key.
The Master/Slave window is displayed.

Menu window

1

3

2

Specifying the master unit

4

Turn the rotary encoder and select "Master/Slave".

5

Press the ENTER key. A drop-down list is displayed.
"Alone": Independent operation.
"Master": Master unit in master/slave operation.
"Slave": Slave unit in master/slave operation.

Drop–down list

5

4

6

Turn the rotary encoder and select "Master".

7

Press the ENTER key.
The green flashing ENTER key light turns off and the unit isspecified as the master unit for master/slave operation.

7
6

61

Specifying the number of slave units(Procedure)
8Turn the rotary encoder and select "Slave Qty."
This item allows you to specify the number of slave units for"Slave Qty."

9

9Press the ENTER key.

10

Turn the rotary encoder and select the number of slave units.

11

Press the ENTER key.

8

The ENTER key light turns off and the number of slave units
is set.
In the figure on the left, "4" is selected for the number ofslave units in the master/slave connection.
11

10

Specifying the slave unit type

12

Turn the rotary encoder and select "Slave Type".

13

Press the ENTER key.
The ENTER key begins to flash green and a drop-down list isdisplayed.

Drop–down list

12

"Same": The same model as the master unit is used as a12

slave unit.
"Booster": A booster unit is used as a slave unit.

14

Turn the rotary encoder and select a slave type from thedrop-down list.

15

Press the ENTER key.
The ENTER key light turns off and the slave type is set.
In the figure on the left, the same model as the master unit isselected for the slave units.

15

14

62

Initializing the settings(Procedure)
16

Press the ESC key.
A message asking whether you want to change the unit
configuration is displayed.

17

Turn the rotary encoder and select "Yes".
If you select "No", the master unit settings you specified inoperations 6 through 15 are canceled.

16

Message

17

18

Press the ENTER key.
A message asking whether you want to restart the unit isdisplayed.

Restart message

18

19

Press the power switch on the front panel to power off theunit, and then press the switch again to turn the unit back on.

19

The unit is specified as the master unit for master/slave
operation.
When the unit is specified as the master unit, the master unit
icon is displayed.

Master unit icon

63

5-3-10-3. Specifying the Slave Unit
To specify a unit as a slave unit, you must first switch the unit from "Alone" (independent operation) to "Slave" (slave unit
in master/slave operation).
Next, you must specify the unit as the terminal slave unit. In Fig. 5-16 "Master/Slave Connection Diagram", slave unit 4 isspecified as the terminal slave unit.
When you cancel independent operation and specify the unit as a slave unit, you must power off the unit and then restart it.
At this time, the settings data of the unit is initialized.

(Procedure)
1

Press the MENU key while the unit is in LOAD OFF mode.
The ENTER key begins to flash and the menu window isdisplayed.

2

Turn the rotary encoder and select the Master/Slave icon.

3

Press the ENTER key.
The Master/Slave window is displayed.

Menu window

1

3

2

Specifying a slave unit

4

Turn the rotary encoder and select "Master/Slave".

5

Press the ENTER key. A drop-down list is displayed.
"Alone": Independent operation.
"Master": Master unit in master/slave operation.
"Slave": Slave unit in master/slave operation.

Drop–down list

5

4

6

Turn the rotary encoder and select "Slave".

7

Press the ENTER key.
The green flashing ENTER key light turns off and the unit is

7
6

64

specified as a slave unit for master/slave operation.

Specifying the terminal slave unit

(Procedure)
8Turn the rotary encoder and select "Terminal Unit".

9

Press the ENTER key.
The ENTER key begins to flash green and a drop-down list isdisplayed.

Drop–down list

8"No": Unit is not specified as the terminal slave unit.

9"Yes": Unit is specified as the terminal slave unit.

11

10

Turn the rotary encoder and select "Yes" for "Terminal Unit".

11

Press the ENTER key.
The ENTER key light turns off and the unit is specified as the10

terminal slave unit.

Initializing the settings

12

Press the ESC key.
A message asking whether you want to change the unit
configuration is displayed.

13

Turn the rotary encoder and select "Yes".
If you select "No", the slave unit settings you specified inoperations 6 through 11 are canceled.

Message

12

13

14

Press the ENTER key.
A message asking you to restart the unit is displayed.

Restart message

14

65

(Procedure)
15

Press the power switch on the front panel to power off theunit, and then press the switch again to turn the unit back on.

15

The unit is specified as a slave unit for master/slave
operation.
The display indicates the state of the unit.
In the figure on the left, the unit specified as the terminal
slave unit ("Yes" is displayed for "Terminal Unit").
If the unit is not the terminal slave unit, "No" is displayed for"Terminal Unit".
Only the applied voltage is displayed in the monitor window.

State of the slave unit

The calculated totals for the current and total power are
displayed on the master unit.

66

5-3-11. Using External Signals to Control the Unit
You can use an external analog signal or external contact signal to control the unit. The external signals are entered into
the J1 rear control connector of the unit.
The unit can output analog signals or logic signals to indicate its operation status. These signals are output from the J2
rear control connector.
Make sure to power off the unit before connecting to the J1 or J2 connector.

5-3-11-1. Assembling the J1 and J2 Connectors
OMRON XG5 connectors are used as the J1 and J2 connectors.
The mounting of the wire to the contact, in order to improve the reliability, please use the (OMRON) special tool
XY2B-7006. In addition, the application wire rod is twist line AWG26 - AWG28, external form Φ1.1-Φ1.3.
Specifically, please review an instruction manual of XY2B-7006. For details, please confirm the operation manual of
XY2B-7006.
In the case of faulty wiring or wiring change, please use the (OMRON) special tool XY2E-0001 that is withdrawn from thehousing contact. For details, please confirm the operation manual of XY2E-0001.

67

5-3-11-2. J1 and J2 Connector Specifications
The pin numbers of the J1 and J2 connectors are as follows: The pin in the upper left (when facing the back panel) is No. 1,
and the pin directly to the right of it is No. 2. The pin in the lower right is No. 20, and the pin directly to the left of it is No. 19.
Pin
J1

J2

NumberOutput a pulse when the main value or sub value isInputs the external trigger signal for the sequence function.
１．２

For details about how to use these pins, see "5-3-11-9.
External Trigger Signal Input".

switched during switching operation, and when executing
the specified steps in sequence operation while the trigger
output is set to ON.
For details about how to use these pins, see "5-3-11-15.
Trigger Signal Output".

An external alarm is sent to the unit by short-circuiting pins
No. 3 and No. 4. Pin No. 4 is connected to pin No. 8 and is
３．４

common for external input signals.
For details about how to use these pins, see "5-3-11-8.
External Alarm Signal Input".

５

NC

６

NC

７

ＮＣ

８

９

13 to 16

For details about how to use these pins, see "5-3-11-14.

This pin can only be connected to OP-22P.
Outputs approx. +5V, using pin No. 8 as a reference.
Do not apply a current of any greater than 100mA.

Connected to pin No. 4. Common to pins No. 9 to No. 12,

Common to pins No. 7 and No. 9 through No. 12, which arewhich are the unit pins used for external input signals.

the unit pins used for external input signals.

Inputs the external switching signal for the switching

Outputs the set value status while the switching function isfunction.

being used.

For details about how to use this pin, see “5-3-11-6.CFor details about how to use this pin, see "5-3-11-13.

Range Control Via an External Contact Signal”.

Switching Function Output Value Status Output".

LOAD OFF mode.
For details about how to use this pin, see "5-3-11-5. LOAD

Outputs the LOAD ON and LOAD OFF status of the unit.
For details about how to use this pin, "5-3-11-11. LOAD
ON/OFF Status Output".

Use an external signal to change C Range.

Outputs the C Range status of the unit.

For details about how to use these pins, see "5-3-11-6. C

For details about how to use these pins, see "5-3-11-12. C

Range Control Via an External Contact Signal".

Range Status Output".

The input terminals used to control master/slave operation. These terminals can only be connected to OP-22P.
The output terminals for the current monitor of the unit.
For details about how to use these pins, see "5-3-11-10.

(17-18) and external resistance (19-20).
For details about how to use these pins, see "5-3-11-4. Set

１９．２０

4 acts as the emitter.

Control output for LSA series power expansion.

Control the set values on the unit via external voltage
１７．１８

Pin No. 3 acts as the collector of the transistor, and pin No.

ＮＣ

ON/OFF Control Via an External Contact Signal".
１１．１２

turns on.

Alarm Status Output"

Uses an external signal to switch the unit to LOAD ON or
１０

When an alarm is sent to the unit, the internal transistor

Value Control Via an External Voltage or External
Resistance".

68

Current Monitor Output".
ＮＣ5-3-11-3. Specifying External Control
To control the specified values on the unit via external voltage or external resistance, or to use an external signal to control
the C Range and LOAD ON/OFF modes, specify "External" under "Select type".
(Procedure)
1

Press the MENU key while the unit is in LOAD OFF mode.
The menu window is displayed.

1

3

2

Turn the rotary encoder and select the external setup icon.

3

Press the ENTER key.

3

Turn the rotary encoder and select "Select type".

4

Press the ENTER key. A drop-down list is displayed.

2"External": Control via external signal"Interface": Control via IF-80GUR

Drop–down list

4

3

5

Turn the rotary encoder and select "External".
Note that you cannot select "Interface" if the IF-80GUR is notmounted.

6

6

Press the ENTER key.
External control is specified.

569

5-3-11-4. Set Value Control Via an External Voltage or External ResistanceAn external voltage or external resistance can be used to control the set value for each operation mode of the unit.
When using an external voltage to control the set value in CC mode, the value specified by the external voltage issuperposed by the value specified on the panel of the unit.
Connect the external voltage or resistance to the J1 connector on the back of the unit. The diagram below illustrates how
to connect the voltage and resistance.
Inside view of LSA series model

CC mode set value
specified by an
external voltage

Superposed
circuitCC modeValue specified on
the panel

J1
17

10kΩ

Set value specified byexternal voltage in other
modes

18

 External Voltage
0V→10V : 0→Rated voltage

19
Set value specified byexternal resistanceR-V conversion
circuitSet value External Resistance0Ω→10kΩ : 0→Rated resistance20

 External Resistance
10kΩ→0Ω : 0→Rated resistance

When  or  is selected

Rated value
When  is selected

External voltage
External resistance

0

10V
10kΩ

Fig. 5-17
Note: The set value for each operation mode that can be controlled by this function is the main value for the Main Setup
function. The preset function and switching function cannot be used while this function is being used.
(Procedure)
1

Press the MENU key while the unit is in LOAD OFF mode.
The menu window is displayed.

1

3

2

Turn the rotary encoder and select the external setup icon.

3

Press the ENTER key.

4

Turn the rotary encoder and select "Ext Control".

2

Select "External" for "Select type". For details about how to
select, see "5-3-11-3. Specifying External Control".

5

Press the ENTER key. A drop-down list is displayed.
"Off": Indicates that you can change the set value from thefront panel.
"Ext V": External voltage 0V→10V; set value 0→ rated

5"Ext R+": External resistance 0Ω→10kΩ; set value 0→ rated

4"Ext R-": External resistance 10kΩ→0Ω; set value 0→ rated

Drop–down list

70

(Procedure)
6

Turn the rotary encoder and select the external control type
you want to use from the drop-down list.

7

7

Press the ENTER key.
The green flashing ENTER key light turns off and theexternal control type is specified.

6

External voltage is selected in the figure on the left.

8

Press the ESC key twice. The main window is displayed.
The currently selected external control type is displayed in
the main window.
"EX V" (external voltage) is displayed in the figure on the left.

"EX R+" (external resistance) is displayed when "Ext R+" isselected.

External control type8
"EX R-" (external resistance) is displayed when "Ext R-" isselected.

The preset function and switching function cannot be usedwhile this function is being used. Thus, the icons for thesefunctions are displayed in gray.

9

Press the "Main Setup" DIRECT key to display the MAIN
SETUP window.
In the figure on the left, CC mode external voltage control isselected. The value displayed for "Val" is the value that was
specified on the panel.
The set value that was specified by using an external voltage

Value set on panel

or external resistance is not displayed.

9

If a control mode other than CC mode external voltage
control is selected, no value is displayed for "Val" and the“Main Value” icon turns gray. In this state, you cannot change
the set value from the panel.
The set value that was specified by using an external voltage
or external resistance is not displayed.
Control mode other than CC mode external voltage control

71

5-3-11-5. LOAD ON/OFF Control Via an External Contact Signal
An external contact signal can be used to switch the unit to LOAD ON or LOAD OFF mode.
If you select to use an external contact signal for LOAD ON/OFF, you cannot use the front panel to switch the unit to LOAD
ON or LOAD OFF mode.
Connect a contact or open collector circuit to the J1 connector on the back of the unit. The diagram below illustrates how
to setup the connection.
Inside view of LSA series model2kΩ

An open collector circuit can be used.
J1
10
LOAD ON/OFF Control
LOAD ON: Contact closed
LOAD OFF: Contact open

Internal power supply unit
+5V

8

Fig. 5-18(Procedure)
1

Press the MENU key while the unit is in LOAD OFF mode.
The menu window is displayed.

1

3

2

Turn the rotary encoder and select the external setup icon.

3

Press the ENTER key.

4

Turn the rotary encoder and select "Ext Load".

2

Select "External" for "Select type".

5

Press the ENTER key. A drop-down list is displayed.
"Off": LOAD ON or LOAD OFF mode can be specified fromthe front panel.
"On": LOAD ON or LOAD OFF mode can be specified byDrop–down list

5

4

using an external contact.

6

Turn the rotary encoder and select "On".

7

Press the ENTER key.

7

The green flashing ENTER key light turns off and theexternal contact is specified.

6

8

Press the ESC key twice. The main window is displayed andindicates that the external contact LOAD ON/OFF has been
specified.

External contact LOAD ON/OFF

872

5-3-11-6. C Range Control Via an External Contact Signal
An external contact signal can be used for C Range control.
However, when the unit is in LOAD ON mode, an external signal cannot be used for C Range control. An external contact
signal can only be used for C Range control while the unit is in LOAD OFF mode.
Connect a contact or open collector circuit to the J1 connector on the back of the unit. The diagram below illustrates how
to setup the connection.
Inside view of LSA series model2kΩ

An open collector circuit
can be used.
J1
12

2kΩ
C Range
H
M
L

11

Internal power supply unit
+5V

C Range Control
11-8
12-8
Open
Open
Open
ClosedClosedOpen

8

Fig. 5-19(Procedure)
1

Press the MENU key while the unit is in LOAD OFF mode.
The menu window is displayed.

1

3

2

Turn the rotary encoder and select the external setup icon.

3

Press the ENTER key.

4

Turn the rotary encoder and select "Ext C Range".

2

Select "External" for "Select type".

5

Press the ENTER key.
The ENTER key begins to flash green and a drop-down list isdisplayed.

Drop–down list

5"Off": C Range control via the front panel.

4"On": C Range control via an external contact.

7

6Turn the rotary encoder and select "On".

7

Press the ENTER key.
The green flashing ENTER key light turns off and C Range
control via an external contact is specified.

6

73

(Procedure)
8

Press the ESC key twice. The main window is displayed andindicates that C Range control via an external contact has
been specified.

External contact C Range

89

Press the "Main Setup" DIRECT key to display the MAIN
SETUP window.
The “C Range” icon turns gray. In this state, you cannot use
the panel to perform C Range control.

974

5-3-11-7. Switching Control Via an External Contact Signal
An external contact signal can also be used to switch the main value and sub value of the switching function.
If you select to use an external signal for switching control, the main value and sub value cannot be automatically switchedfrom the front panel.
Connect a contact or open collector circuit to the J1 connector on the back of the unit. The diagram below illustrates how
to setup the connection.
Inside view of LSA series model2kΩ

An open collector circuit
can be used.
J1
9
Switching Control
Contact open: Main value
Contact closed: Sub value

Internal power supply unit
+5V

8

Fig. 5-20(Procedure)
1

Press the MENU key while the unit is in LOAD OFF mode.
The menu window is displayed.

1

3

2

Turn the rotary encoder and select the "System Setup" icon.

3

Press the ENTER key.

4

Turn the rotary encoder and select "Switching Type".

5

Press the ENTER key. A drop-down list is displayed.

6

Turn the rotary encoder and select "Ext".

2

4

Select "Freq/Duty" for the switching type "Frequency and5Duty". For “Dual Time”, select "Time", and for "External

6Signal”, select "Ext".

7

Press the ENTER key.
The ENTER key light turns off and "Ext" is specified for“Switching Type”.

775

(Procedure)
8

Press the ESC key twice to return to the main window.
The main window indicates that external contact switchinghas been specified.

8

9
Main window

9

Press the "SW" DIRECT key in the main window.
The SWITCHING window is displayed.

External contact switching

When switching via an external contact is specified for theunit, the switching types “Dual Time” and "Frequency andDuty" cannot be used.
In the figure on the left, the two DIRECT keys on the bottom
are blank. "0.000A" is specified for the main value, and"2.000A" is specified for the sub value.

SWITCHING window
9

J1

Blank DIRECT Keys
External contact: Open

10Open the external contact that is connected to the J1
connector between pins No. 9 and No. 8.

8When performing switching, the value for “Main" value is10

specified as the value for the unit.

11

Press the DIRECT 1 key to display the "Main⇔Sub" icon.
Each time you press the DIRECT 1 key, the icon changes.
The icons change in the following order: "Main" → "Sub" →"Main⇔Sub" → "Main".

11

12

Apply the voltage from the power supply source to the unit,
and then press the LOAD key to switch the unit to LOAD ON
mode.

11

The unit passes a level of current equal to the value specified
for "Main" value" (0A).

9

J1

13
External contact: Closed

Close the external contact that is connected to the J1
connector between pins No. 9 and No. 8.
When performing switching, the value for “Sub" value is8
13

specified as the value for the unit.

76

5-3-11-8. External Alarm Signal Input
An external contact signal can also be used to cause the unit to enter an alarm state, and to stop the unit after it isswitched to LOAD OFF mode.
When the unit is an alarm state, no operations can be performed. To operate the unit again, you must first cancel thealarm by powering off the unit and then turning it back on.
Connect a contact or open collector circuit to the J1 connector on the back of the unit. The diagram below illustrates how
to setup the connection.
Inside view of LSA series model2kΩ

An open collector circuit
can be used.
J1
3
External Alarm Signal Input
Contact closed: Alarm

Internal power supply unit
+5V

4Fig. 5-21(Procedure)
3

1

J1

External contact: Closed

Close the external contact that is connected to the J1
connector between pins No. 3 and No. 4.

41
The unit switches to LOAD OFF mode and an alarm
message is displayed.

Alarm message

3

J1

2
External contact: OpenFix the problem that caused the alarm.
After you fix the problem, open the external contact that is4connected to the J1 connector between pins No. 3 and No. 4.
2

3

Press the power switch on the front panel to power off theunit, and then press the switch again to turn the unit back on.

377

5-3-11-9. External Trigger Signal Input
An external trigger signal can be used to cancel pause while the unit is in sequence operation.
Connect the signal transmitter to the J1 connector on the back of the unit. The diagram below illustrates how to setup theconnection.
If you input a voltage of 3.3V or higher, attenuate
the circuit (as shown in the diagram below).

J1

Inside view of LSA series model
1

Trigger signal specifications
Maximum voltage: +3.3V
Pulse duration: 10μs or more
Pulse interval: 100ms or moreInternal power
supply unit
+3.3V

2

Fig. 5-22

5-3-11-10. Current Monitor Output
The value of the current running through the unit is output as voltage.
The output voltage is 0V for a rated current of 0%, and 10V for a rated current of 100% at each C range.
Connect a measuring instrument to the J2 connector on the back of the unit. The diagram below illustrates how to setup
the connection.
Inside view of LSA series model
J2
17

Current monitor voltage
0 → 10V
Max. 1mA

10V

M
18
0

COM

Input current
Rated current 100%

Fig. 5-23* When you switch the unit on and off, the current monitor circuit becomes unstable. As a result, voltage might begenerated by current monitor output.

5-3-11-11. LOAD ON/OFF Status Output
An open collector circuit can be used to output the LOAD ON/OFF status of the unit.
Connect a measuring instrument to the J2 connector on the back of the unit. The diagram below illustrates how to setup
the connection.
Inside view of LSA
Series modelInternal power
supply unit
+5V
Max. 100mA

J2
7

2kΩ
10

LOAD ON/OFF status
LOAD ON: Closed
LOAD OFF: OpenM

8

Fig. 5-24
78

You can use the J2 connector pin No. 7
and an external resistance to output theLOAD ON/OFF status of the unit asvoltage.
The values for the figure on the left are
as follows:
LOAD ON: 0V
LOAD OFF: +5V

5-3-11-12. C Range Status Output
An open collector circuit can also be used to output the C Range status.
Connect a measuring instrument to the J2 connector on the back of the unit. The diagram below illustrates how to setup
the connection.
Inside view of LSA
series modelInternal power
supply unit
+5V
Max. 100 mA

J2
7

2kΩ

2kΩ
You can use the J2 connector pin No. 7 and an
external resistance to output the C Range status of
the unit as voltage.
The values for the figure on the left are as follows:

11

C Range

No. 11 to No. 8

No. 12 to No. 8

H

+5V

+5V

M

+5V

0V

L

0V

0V

12

M

M

8

LOAD ON/OFF status output
C Range

No.11 to No.8

No.12 to No.8

H

Open

Open

M

Open

ClosedL

ClosedClosedFig. 5-25

5-3-11-13. Switching Function Output Value Status Output
A logic signal can be used to output the output value status of the switching function.
Connect a measuring instrument to the J2 connector on the back of the unit. The diagram below illustrates how to setup
the connection.
Inside view of LSA series model
Series1kΩ

J2
7Internal power
supply unit
+5V
9

M
8

Fig. 5-26

79

Output value status
H: Main value
L: Sub value5-3-11-14. Alarm Status Output
The alarm status can be output by the unit.
Connect a measuring instrument to the J2 connector on the back of the unit. The diagram below illustrates how to setup
the connection.

Inside view of LSA series
model
J2

7
Internal power
supply unit
+5V
Max. 100 mA

8

Alarm status
No alarm: Open (+5V)
Alarm: Closed (0V)3

M

The J2 connector pin No. 3 isconnected to the internal +5V power
supply unit. Do not apply a voltage ofmore than +5V to this connector.

4Fig. 5-27

5-3-11-15. Trigger Signal Output
Trigger signals are output by the unit during the following operations:- Switching operation: When switching the main value and sub value.
- Sequence operation: When executing a step for which trigger signal output is set to ON.
Connect a measuring instrument to the J2 connector on the back of the unit. The diagram below illustrates how to setup
the connection.
Trigger signal specifications
Voltage: Approx. 4V
Pulse duration: 2μs
Output impedance: 50Ω

J2

Inside view of LSA series model
1
Pulse
transformer

Measuring
instrument

2

Fig. 5-2880

5-3-12. Menu Window Operations
The settings for non-function related items can be specified in the menu window. To display this window, press the MENU
key.
The following section describes the full screen monitor, status display, system settings, and data initialization.
For details about the master/slave settings, external control settings, and sequence configuration, see "5-2-2. Using
the Menu Icons to Specify the Function Settings".

5-3-12-1. Full Screen Monitor
The voltage, current, and power values can be displayed in full screen mode. This makes it easier to confirm the values
from a distance.
When the voltage, current, and power values are displayed in full screen mode, the only operation that can be performed
is switching the unit to LOAD OFF mode. The unit cannot be switched to LOAD ON mode, and the set values cannot be
modified.
(Procedure)
1
1

Press the LOAD key to switch the unit to LOAD ON mode.
In the figure on the left, a voltage of 5V is applied and acurrent of 10A runs through the unit.

2

Press the MENU key to display the menu window.

3

Turn the rotary encoder and select "Full Screen Monitor".

4

Press the ENTER key to display the voltage, current, and2

3

Menu window

power values in full screen mode.
When the values are displayed in full screen mode, the only
4

operation that can be performed is switching the unit to
LOAD OFF mode.

5

Press the ESC key twice to display the main window for
performing other operations.

581

5-3-12-2. Status Display
The Status window allows you to confirm the current settings of the unit. The status can be displayed even in LOAD ON
mode.
(Procedure)1

Select the "Status" icon in the menu window.

1
Press the green flashing ENTER key. The Status window isdisplayed.

2

2

The Status window has 2 pages. These pages display thecurrent settings of the unit.
Press the CURSOR keys to change the page.

Menu window
Status window 1/2
The following items are displayed:
: Load timer setting: Soft start setting
: External control setting

Status window 2/2
The following items are displayed on the second page.
 Master unit setting for master/slave operation Sensing point setting for remote sensing function
 Current response setting for the internal reference signal of




⑧

the unit Power supply movement voltage setting contents for 0V（LSA-165V1 only）⑧ Software version of the unit

3

Press the ESC key to close the Status window.
The menu window is displayed.

Menu window

382

5-3-12-3. System Setup
The System Setup window allows you to specify the display window settings, buzzer setting, CR mode display unit,
remote sensing setting, and current response setting.
(Procedure)1

Select the "System Setup" icon in the menu window.
Press the green flashing ENTER key. The System Setup
window is displayed.

1

Menu window

2

Use the rotary encoder to select the parameter in the System
Setup window you want to change.
The name of the selected parameter is underlined, and thenumbers or words are highlighted in black.

3

3

After you select a parameter, press the ENTER key. You can
now enter the parameter value.

2
System Setup window

4

Contrast settingSpecify the LCD contrast.
Turn the rotary encoder to change the value and specify thecontrast.

5

5

Press the ENTER key to set the contrast you specified.

6

Specify the LCD brightness.

4

Brightness setting

Turn the rotary encoder to change the value and specify thebrightness.
7

7

Press the ENTER key to set the brightness you specified.

8

Specify the ON/OFF setting of the screen saver.

6
Screen Saver setting

Turn the rotary encoder and select "Off" or "On" from thedrop-down list.
9

9
8

83

Press the ENTER key to set the setting you specified.

(Procedure)
10

Buzzer settingSpecify the ON/OFF setting of the buzzer.
Turn the rotary encoder and select "Off" or "On" from thedrop-down list.

1011

CR Unit Select setting

11

Press the ENTER key to set the setting you specified.

12

Specify the display unit of the resistance in CR mode.
Turn the rotary encoder and select "Ω" or "S" from thedrop-down list.

13

13

Press the ENTER key to set the display unit setting you
specified.

12

14

Switching Type settingSpecify the switching type used by the switching function.
Turn the rotary encoder and select "Freq/Duty", "Time", or"Ext" from the drop-down list.

15

15

Press the ENTER key to set the switching type you specified.

16

Specify the voltage sensing point used by the voltage remote

14
Remote Sensing setting

sensing function.
Turn the rotary encoder and select "Int" or "Ext" from the17drop-down list.

17

16

84

Press the ENTER key to set the sensing point you specified.

(Procedure)
18

Load Response settingSpecify the load response for the unit.
Turn the rotary encoder and select "Slow" or "Fast" from thedrop-down list.
When

19

you

use

the

switching

function,external

voltage/resistance control, or sequence function, "Load
Response" is fixed at "Fast". You cannot select "Slow" when
you use these functions.

18

19

Press the ENTER key to set the load response you specified.

20

Press the ESC key to close the System Setup window.
The main window is displayed.

2085

5-3-12-4. Data Initialization
The Initialize window is used to initialize the settings data (restore the default settings).
There are three types of initialization: all data (All data clear), all data other than sequence data (Set&Preset data clear),and sequence data (Sequence data clear).
(Procedure)
1

Press the MENU key while the unit is in LOAD OFF mode todisplay the menu window.

1

2

Turn the rotary encoder and select the "Initialize" icon.

3

Press the ENTER key to display the Initialize window.

4

Turn the rotary encoder and select the type of initialization.

2

3"All data clear": Delete all data.
"Set&Preset data clear": Delete all data other than sequence
data.
"Sequence data clear": Delete sequence data.
4

5
5

After you select the type of initialization, press the ENTER
key.
The ENTER key begins to flash green. A confirmation
message asking whether you want to initialize the data isdisplayed.
"Set&Preset data clear" is selected in the figure on the left.

Confirmation message

6

Turn the rotary encoder and select "Yes" in the confirmation
message.

686

(Procedure)
7

Press the ENTER key. The initialization you specified inoperation 6 is performed.

7

The main window is displayed a few seconds after you clear
the data.

5-3-13．Function of the 0V electric discharge (LSA-165V1 model)
It is equipped with switching power supply (power supply for 0V) in the main body of LSA-165V1, and a rating electric
current comes to be able to draw in a remote sensing terminal interval at 0V. Ａt the time of factory shipment and after
initialization, the power supply for 0V is set to on of the 0.25V movement setting.
When set 0.25V at “Baias On-voltage” setting of MENU, the power supply for 0V will work when input voltage is 0.25V or
more even if you turn LOAD ON when the machine’s discharge terminals are open.
It is an immediately power supply for 0V turns ON when you turn LOAD ON at 0V with the setting voltage of the power
supply for 0V in an opening state with a load terminal. And a negative voltage should be measeured under the influence ofa power supply for 0V. Reverser connection alarm occurs.
The setting of the power supply for 0V are in MENU → System Setup → Bias On-Voltage. You can set “OFF”, “0.00V”
for normaly LOAD ON. You can set from “0.05V” to “1.5V” for start voltage with 0.05V unit.
The set range of each electric discharge mode is the same as LSA-165.

(Procedure)
1

When the unit is in LOAD OFF mode, press the MENU key
then the MENU key light turns on and the ENTER key
becomes the blinking. The MENU screen appears.

2

Operate a rotary encoder and choose "System Setup" icon.

3

Press the Enter key.
It becomes the System Setup screen.

Menu window

1

3

2

87

4

Operate a rotary encoder with System Setup screen,
Please choose "Bias On-Voltage".System Setu

5

Press the Enter key
ENTER key turns on a green point and the "Bias On-Voltage"

SystemSetup window

5part is in a condition that input is possible.

4

6

Please make voltage reading desired while changing a value
with a rotary encoder.

Value ready to be entered

6

7

Press the Enter key
It becomes 0.05V in the left-hand figure.

7

8

Press two times of ESC keys. This unit becomes "the main
screen"The icon of “0V on” is diplayed when “Bias On-Voltage” isNOT set “OFF”.
“0V on” icon refers to “power supply for 0V” is vaild. This icon
will be displayed at LOAD OFF.

0V icon888

5-4. Sequence Function
The sequence function allows you to automatically execute sequence waveforms and sequence programs that areregistered in advance.

5-4-1. Overview of Sequence Waveforms
Sequence waveforms are registered and executed in CC mode. The sequence waveform settings cannot be specified inany other operation mode.
There are six types of waveforms, which are described below. A sequence waveform can be used as one of the steps of asequence program.
Sequence waveforms
Current value

Description

Ramp wave (Ramp)
Current waveform

Iset
t0

Time

Tt

Square wave (Squar)

Current value

Current waveform

Freq
Duty
Iset1
Tr

Tf

A square wave is used to specify the frequency (Freq), duty ratio(Duty), current 1 (Iset1), current 2 (Iset2), the time at which the current
is changed from Iset2 to Iset1 (Tr), and time at which the current ischanged from Iset1 to Iset2 (Tf).
Square waves can be executed continuously. It can be executed
infinitely or a specified number of times (1 to 9999 times).
The specified time for Tr and Tf is the same.

Iset2
Time

Sine wave (Sine)

Current value

A ramp wave is used to specify the set current (Iset) and the time atwhich the set current is reached (Tt).
A time of "t0" indicates that there is no previous step. Thus, "0A" isspecified as the current.
Ramp waves can only be executed one time. They cannot be
executed continuously.

Current waveform

Freq

A sine wave is used to specify the frequency (Freq), center current(Center), and maximum/minimum current width (P-P).
Sine waves can be executed continuously. It can be executed infinitely
or a specified number of times (1 to 9999 times).

P-P
CenterTime
Current value

Triangular wave (Tri)Current waveform

Freq
Duty

CenterP-P

A triangular wave is used to specify the frequency (Freq), duty ratio(Duty), center current (Center), and maximum/minimum current width(P-P).
Triangular waves can be executed continuously. It can be executed
infinitely or a specified number of times (1 to 9999 times).

Time
Current value

Pulse wave (Pulse)
Current waveform

Tb
P

P
Tp

Tp

Iset2
Iset1
Time

Current value

Rush Wave (Rush)
Tset

TC

Current waveform= (Iset1 - Iset2)
x exp (-t/T) + Iset2
Iset2

Iset1

Time (t)Iset1 - 0.632 x (Iset1 - Iset2)

A pulse wave is used to specify the pulse wave time (Tp), pulse wave
time (Tb), pulse current (Iset1 and Iset2), and number of pulses (P).
A pulse wave can be executed continuously. It can be executed
infinitely or a specified number of times (1 to 9999 times).
When Tp is short, the current waveform resembles a triangular wave
and does not form a pulse waveform. This is due to characteristics of
the unit at start up and the influence of the L factor (inductance) of theload cable.
When using pulse waveforms, make sure to take the Tp value andoperation environment into consideration.
A rush wave is used to specify the current ripple (Iset), current
convergence value (Iset2), current convergence time (Tset), and thetime at which the current reaches Iset1-0.632x (Iset1-Iset2) (TC).
Rush waves can only be executed one time. They cannot be executed
continuously.
When TC is small, the current does not reach Iset1. This is due tocharacteristics of the unit at start up and the influence of the L factor(inductance) of the load cable.
When you specify Iset1, make sure to measure the actual waveform.

89

5-4-2. Overview of Sequence Programs
A total of four sequence programs (A to D) can be specified on the unit. A sequence program is arranged in a series of 10
execution orders, each of which contains four sequence groups (1 to 4). When a sequence program is run, the sequencegroups are executed in the specified order.
When a sequence group is finished executing, the unit enters LOAD OFF mode for approximately 40ms before it begins to
execute the next sequence group.
The same four sequence groups can be used in each of the sequence programs specified on the unit. However, four
unique groups cannot be specified for each sequence program.

Sequence Program A
Execution order 1Group 1 - 4

40ms
LOAD OFF

Execution order 10
Group 1 - 4

Execution order 2Group 1 - 4

Sequence Program B
Sequence Program C
Sequence Program D

A total of four sequence groups (1 to 4) can be specified for an execution order. When you execute a group, you can freely
specify the operation mode, C Range value, and V Range value.
Each sequence group (1 to 4) can execute a maximum of 1018 steps in order.

Group 1: Specified operation mode, C Range value, and V Range value
Step
1

Step
2

Maximum of 1018 steps

Group 2
Group 3
Group 4
The following items can be specified for a single step.
Step
Set value, limit value, execution time, execution status, LOAD ON/OFF, trigger
signal output ON/OFF.

90

5-4-3. Overview of Specifying Sequence Waveforms and Sequence Programs
Sequence Configuration window

Menu window
LOAD key off

Sequence Waveform
Setup
For details, see"5-4-3-1. Specifying a
Sequence Waveform"
for details.
MENU key
operation

Select the sequence
configuration icon

Select "Program Select"

Sequence Program SetupSequence program settings window

Specifying the execution order of the sequence groups
Specify the execution order of the groups (1 to 4) for the sequence program.
For details, see "5-4-3-6. Specifying the Execution Order of SequenceGroups".

Group settings window

Specifying the execution conditions for the sequence groups
Specify the execution conditions for sequence groups.
For details, see "5-4-3-2. Specifying the Execution Conditions of SequenceGroups".
Group conditional branching Setup Window
Specifying the group conditional
branchingSpecify the conditional branching forthe sequence groups.
For details, see "5-4-3-3. Specifying theConditional Branching of SequenceGroups".
Step settings window
Specifying the step
Specify the steps in a sequencegroup.
For details, see "5-4-3-4. Step
Settings" and"5-4-3-5. Editing Steps".

915-4-3-1. Specifying a Sequence Waveform
The explanation provided in this section begins with operation  in "5-4-3. Overview of Specifying Sequence Waveforms
and Sequence Programs".
For details about the preceding operations, see section "5-4-3. Overview of Specifying Sequence Waveforms andSequence Programs".
(Procedure)1Turn the rotary encoder and select the sequence waveform
you want to specify from the left column of the drop-down list.

1

Left side of the drop–down list

2

After you select a sequence waveform, press the ENTER
key.
The green flashing ENTER key light turns off and thesequence waveform is specified.

2

4"Pulse" is selected and established in the figure on the left.

3

Turn the rotary encoder and move the cursor to "C Range".

4

Press the ENTER key.
A drop-down list of items is displayed. You can now specify
the "C Range" value.

3
Drop–down list

5

Turn the rotary encoder and specify the "C Range" value.

6

Press the ENTER key.
The green flashing ENTER key light turns off and the current

6

is specified.
"M" is selected for the "C Range" value in the figure on the
left.
5

7

Check the diagram displayed in the lower-right corner of thescreen. Next, specify the parameters that are listed between"C Range" and "Cycle".
Use the rotary encoder, ENTER key, and CURSOR keys tospecify the parameters.
In the figure on the left, "1.0000A" is specified for "I set 1","2.0000A" for " I set 2", "500μs" for " Tp", "10" for " P Count ",Waveform reference

792

and "100ms" for " Tb".

(Procedure)

98Turn the rotary encoder and move the cursor to "Cycle".

9

Press the ENTER key.
The ENTER key lights up in green. You can now change the"Cycle" value.

8

10

Use the rotary encoder to change the "Cycle" value.
To change the input digits, use the CURSOR keys.
The "Cycle" value changes in the following order: "∞ (Infinite) 1  2 … 9998  9999".

11

Press the ENTER key.
The ENTER key light turns off and the "Cycle" value isspecified.

11

In the figure on the left, "1000" is specified as the "Cycle"

10value.

12

Press the ESC key twice.
The sequence settings are specified, and the main window isdisplayed.

12

Main window93

5-4-3-2. Specifying the Execution Conditions of Sequence Groups
The explanation provided in this section begins with operation  in "5-4-3. Overview of Specifying Sequence Waveforms
and Sequence Programs".
For details about the preceding operations, see section "5-4-3. Overview of Specifying Sequence Waveforms andSequence Programs".

(Procedure)1Turn the rotary encoder and select the sequence program
you want to specify from the right column of the drop-down
list.

1

Right side of the drop–down list

2

After you select a sequence program, press the ENTER key.
The green flashing ENTER key light turns off and thesequence program is specified.
"Sequence Program A" is selected and specified in the figure2on the left.
You can specify sequence groups and steps in any sequence
program (A to D) you select.

3

Turn the rotary encoder and move the cursor to "Group
setup".
Turn the rotary encoder clockwise to move the cursor in the
red-arrow direction, and counter-clockwise to move thecursor in the gray-arrow direction.

3

4

Press the ENTER key.
The ENTER key lights up in green. You can now enter the"Group setup" value.

6

5

Use the rotary encoder to select a group (1 to 4).

6

Press the ENTER key.
The ENTER key light turns off and the group is specified.

Value ready to be entered4

In the figure on the left "1" is selected for "Group setup".

5

7Turn the rotary encoder and move the cursor to "SET" of"Group setup".
"SET" is highlighted in black.

7

94

(Procedure)
8

Press the ENTER key.
The group settings window is displayed.

8Group settings window

9

Turn the rotary encoder and move the cursor to theparameter you want to change.
Turn the rotary encoder clockwise to move the cursor in the
red-arrow direction, and counter-clockwise to move thecursor in the gray-arrow direction.

9

10

After you select a parameter, press the ENTER key.
You can now enter the selected parameter value. Use therotary encoder and CURSOR keys to specify the value.
Mode: Selects the operation mode.
C Range: Selects current range.

10

V Range: Voltage range can be specified in CV+CC modeand CV+CR mode.
Cycle: Specifies the number of execution cycles for theselected group.
End state: Specifies whether the unit enters LOAD ON or
LOAD OFF mode when the selected group isfinished executing.
End value: Specifies the value for when the selected group isfinished executing.

11

Press the ENTER key.
The ENTER key light turns off and the parameters are
specified.

1195

5-4-3-3. Specifying the Conditional Branching of Sequence Groups
You can specify the current, voltage, or sequence group execution time as conditions for performing the following
branching operations: switching and executing a different sequence program or sequence group, pausing sequence
execution, or canceling sequence execution.
If current is specified as the condition, branching is performed when the current running through the unit crosses the
specified value.
If voltage is specified as the condition, branching is performed when the voltage applied to the unit crosses the specified
value.
If the execution time is specified as the condition, branching is performed when the execution time of sequence program
exceeds the specified time.
The explanation provided in this section begins with operation  in "5-4-3. Overview of Specifying Sequence Waveforms
and Sequence Programs".
For details about the preceding operations, see section "5-4-3. Overview of Specifying Sequence Waveforms andSequence Programs".
(Procedure)1Turn the rotary encoder and move the cursor to "Condition" inthe sequence group settings window.

1

Sequence group settings window

2

Press the ENTER key.
The first page of the conditional branching settings window(1/2) is displayed.
This page allows you to specify the current and voltage as
conditions for branching.

2

Conditional branching settings window (1/2)

3

Press the right CURSOR key to go to the second page of theconditional branching settings window (2/2).
This page allows you to specify the execution time as acondition for branching.

3

4

Press the left CURSOR key to go back to the first page of theconditional branching settings window (1/2).

4
Conditional branching settings window (2/2)

96(Procedure)Specifying the branching condition

5

Turn the rotary encoder and move the cursor to theparameter for which you want to enable conditional
branching.
When you move the cursor to "Current condition", "Voltage
condition", or "Time condition", the selected item ishighlighted in black.
"Current condition" is selected in the figure on the left.

5

6

Press the ENTER key.
The ENTER key begins to flash green, and a drop-down list
containing the items "On" and "Off" is displayed.

6
Drop–down list

7

Turn the rotary encoder and select "On" to enable conditional
branching.

8

Press the ENTER key.
The ENTER key light turns off and "On" is specified

8

conditional branching.
After conditional branching is enabled, the branchingcondition and "THEN GOTO" switch from gray to black. You
7

can now specify the values for these items.

Values that can be set
In the figure on the left, "On" is specified for "Current
condition".
To specify the values for "Voltage condition" and "Timecondition", perform the same procedure.

9Specifying the branching condition
Turn the rotary encoder and move the cursor to "IF Current".

10

10

Press the ENTER key.
You can now enter the branching condition.

9
Value ready to be entered11
12

Use the CURSOR keys to change the input digits. To change
the value, use the rotary encoder.

12

Press the ENTER key.
The ENTER key light turns off and the value is specified.
In the figure on the left, "5.000A" is specified for the11

branching condition.
To specify the values for "Voltage condition" and "Timecondition", perform the same procedure.

97

(Procedure)Specifying the branching item

13

Turn the rotary encoder and move the cursor to "THEN
GOTO".

13

14

Press the ENTER key.
The ENTER key begins to flash green and a drop-down list isdisplayed. The branching points are displayed in thedrop-down list.
The items displayed in the drop-down list are as follows:
Program: Displays sequence programs A, B, C, and D

14Group: Displays groups 1, 2, 3, and 4
Pause: Pauses the sequence operation
Drop–down list

Load Off: Switches the unit to LOAD OFF mode and stops

15

the sequence operation

15

Turn the rotary encoder and select the branching item you
want to specify.

Branching item: Sequence program

16

Select "Program" (described in operation 14) and press the
ENTER key.
"Program" is specified as the branching item.

17

Turn the rotary encoder and move the cursor to the box
directly under "Program".

18

18

Press the ENTER key.
The ENTER key begins to flash green and a drop-down list

Drop–down list

16

appears. The sequence programs A, B, C, and D are17

displayed in the drop-down list.

19

Use the rotary encoder to select a sequence program (A, B,
C, or D).

20

20

Press the ENTER key.
The green flashing ENTER key light turns off and thesequence program specified for branching is set.
In the figure on the left, "C" is set as the sequence program

19

98

specified for branching.

(Procedure)
Branching item: Sequence group21

Select "Group" (described in operation 14) and press the
ENTER key.
"Group" is specified as the branching item.

22

Turn the rotary encoder and move the cursor to the box
directly under "Group".

23

23

Press the ENTER key.
The ENTER key lights up in green. You can now enter the

Value ready to be entered21

group number (1, 2, 3, or 4).

22

24

Use the rotary encoder to select a group number (1, 2, 3, or
4).

25

25

Press the ENTER key.
The green flashing ENTER key light turns off and the groupspecified for branching is set.
In the figure on the left, "2" is the group specified forbranching.

24
Branching item: Sequence pause

26

Select "Pause" (described in operation 14) and press the
ENTER key.
"Pause" is specified as the branching item.

26

Branching item: LOAD OFF

27

Select "Load Off" (described in operation 14) and press the
ENTER key.
"Load Off" is specified as the branching item.

27

99

5-4-3-4. Step Settings
The explanation provided in this section begins with operation  in "5-4-3. Overview of Specifying Sequence Waveforms
and Sequence Programs".
For details about the preceding operations, see section "5-4-3. Overview of Specifying Sequence Waveforms andSequence Programs".
(Procedure)1Turn the rotary encoder and move the cursor to item "SET"on the same line as "Step setup".
After you select "SET", the item is highlighted in black.

1

2

Press the ENTER key.
"END STEP" is displayed if no step has been specified forthe group, as shown in the figure on the left.
Nothing can be specified in END STEP.

2
The number of steps that can be specified is displayed atbottom.
If you do not want to insert a step, press the ESC key toTotal number of steps that canbe specified

return to operation 1.

3

Press the ENTER key while the item "Insert" (displayed in the
figure in operation 2) is highlighted in black.
A step is inserted before the END STEP, and the stepsettings window is displayed.

3

In the step settings window, turn the rotary encoder
clockwise to move the cursor in the red-arrow direction, andcounter-clockwise to move the cursor in the gray-arrow
direction.

4

Turn the rotary encoder and move the cursor to "Step X/Y".
"X" represents the current step, and "Y" indicates the total
number of steps in the group.

5

In the figure on the left, both the current step (X) and the total
number of steps in the group (Y) are listed as "1".

5

Press the ENTER key.
The waveforms for the current step are displayed in the

Step X/Y

Drop–down list

4drop-down list.

100

(Procedure)
6

Turn the rotary encoder and select a waveform.
Waveforms can only be selected when CC mode is specified

7

for the group. The only item that can be specified in otheroperation modes is "Value".
6

7

Press the ENTER key.
The ENTER key light turns off and the waveform for thegroup is specified.
"Value" is the item selected in the figure on the left.

a

In the figure on the left, the parameters entered in section "a"vary by operation mode or waveform.

a

b

b

If "Value" is selected for the waveform, the "Time" value isentered in section "b". If a waveform is selected, the "Cycle"
value is displayed.
In both sections "a" and "b", turn the encoder to move thecursor to a parameter. After you select a parameter, press the
ENTER key. You can now enter the parameter value.
Use the rotary encoder and CURSOR keys to enter thevalue. To specify the value, press the ENTER key.

Specifying the execution state

98Turn the rotary encoder and move the cursor to "Behavior".

9

Press the ENTER key.
The ENTER key begins to flash green and a drop-down list isdisplayed. This list displays the different execution states of8

the step.
The items displayed in the drop-down list are as follows:
Run: Executes the step with the specified settings.
Skip: Skips the step and executes the next step.

Drop–down list

Pause: Temporarily pauses the execution of the step after asequence is run.
※When it becomes a divergence condition when condition
divergence is set, it becomes the set movement.

10

Turn the rotary encoder and select the execution state.

11

Press the ENTER key.

10

11

The ENTER key light turns off and the execution state is
specified.
"Run" is selected in the figure on the left.

101

(Procedure)Specifying the LOAD ON and LOAD OFF settings

12Turn the rotary encoder and move the cursor to "Load".

13

Press the ENTER key.

13
The ENTER key begins to flash green, and a drop-down list
is displayed. This list indicates the LOAD ON and LOAD OFF

12

settings of the step.
The items displayed in the drop-down list are as follows:
Off: Executes the step in LOAD OFF mode.
Drop–down list

On: Executes the step in LOAD ON mode.

14

Turn the rotary encoder and select the execution state.

15

Press the ENTER key.

15

The ENTER key light turns off and the execution state is

14

specified.
"On" is selected in the figure on the left.

Specifying the trigger signal setting: For details about how to use a trigger signal, see "5-3-11-15. Trigger Signal Output".

16

Turn the rotary encoder and move the cursor to "Trigger".

17

Press the ENTER key.

17
The ENTER key begins to flash green and a drop-down list isdisplayed. The list indicates whether a trigger signal is output

16

when the step is executed.
The items displayed in the drop-down list are as follows:
Off: No trigger signal is output when the step is executed.
Drop–down list

On: A trigger signal is output when the step is executed.

18

state.

19

19
18

Turn the rotary encoder and select the trigger signal output

Press the ENTER key.
The ENTER key light turns off and the execution state is
specified.
"Off" is selected in the figure on the left.

102

(Procedure)
Adding a step

20

Press the right CURSOR key while the ENTER key light is off
to specify the next step.

20

The message shown in the figure on the left is displayed.

21

Press the ENTER key.
The step settings window is displayed.
The step and total number of steps change from "1/1" to"2/2".

1/1 → 2/2

21

22

103

Perform operations 4 to 21 for Step 2/2.

5-4-3-5. Editing Steps
The explanation provided in this section begins with operation  in "5-4-3. Overview of Specifying Sequence Waveforms
and Sequence Programs".
For details about the preceding operations, see section "5-4-3. Overview of Specifying Sequence Waveforms andSequence Programs".
(Procedure)1Turn the rotary encoder and move the cursor to "Step setup"in the sequence group setup window.

1

Group settings window

2

Press the ENTER key.
The ENTER key lights up in green. You can now enter the"Step setup" value.

3

Use the rotary encoder and CURSOR keys to enter the step
you want to specify.

3

The step number entered here is one greater than thenumber of steps that have already been specified. For
example, if nine steps have already been specified, the step

Value ready to be enterednumber entered here is "10".

2

If no step has been specified, the only number you can enteris "1".

4

Press the ENTER key. The ENTER key light turns off and thestep is specified.

4

In the figure on the left, "10" is specified as the sequence
step.

5
5

Turn the rotary encoder and move the cursor to item "SET"on the same line as "Step setup".
After you select "SET", the item is highlighted in black.

6

Press the ENTER key.
The step settings window is displayed.

6

The step displayed is the step that was specified in operation
4.
When you change the step settings, perform operations 4 to
19 described in "5-4-3-4. Step Settings".

7

Turn the rotary encoder and move the cursor to "MENU".
After you select "MENU", the item is highlighted in black.

7

104

(Procedure)
8

Press the ENTER key.
The message shown on the left is displayed.
This window allows you to edit the sequence step number
you selected (Insert, Paste Next, Delete, and Delete All).

10

9

Turn the rotary encoder to select the item you want to edit.
The item you select is highlighted in black.

9

10

Press the ENTER key.
Edit the item you selected in the previous operation (the item
highlighted in black).

8

To cancel step editing, press the ENTER key while "Cancel"
is highlighted in black.

InsertWhen you execute "Insert", a new step is inserted immediately
before the step to be processed.

Before

1

10

11

20

END

No parameters are specified for the new step. To specify theparameters for the new step, perform operations 4 to 19 described

After

1

10

11

12

21

END

Newly inserted stepin "5-4-3-4. Step Settings".
The figure on the left shows when "Insert" is executed for step
10/20.

Paste Next

When you execute "Paste Next", a new step is inserted
immediately after the step to be processed.

Before

1

10

11

20

END

The new step has the same parameters as the step for which"Paste Next" is executed.

After

1

10

11

12

21

END
The figure on the left shows when "Paste Next" is executed for

Newly inserted step
DeleteBeforestep 10/20.
When you execute "Delete", the step to be processed is deleted.

Step to be deleted
1

9

10

11

20

END

The figure on the left shows when "Delete" is executed for step
10/20.

After

1

9

10

19

END

Delete All

When you execute "Delete All", all the steps in the sequencegroup are deleted.

Before

1

After

END

10

11

20

END

105

5-4-3-6. Specifying the Execution Order of Sequence Groups
After you specify the required sequence groups and the steps for each respective group, you must specify the execution
order of groups for the sequence program.
The explanation provided in this section begins with operation  in "5-4-3. Overview of Specifying Sequence Waveforms
and Sequence Programs".
For details about the preceding operations, see section "5-4-3. Overview of Specifying Sequence Waveforms andSequence Programs".
(Procedure)1

In the sequence program settings window, select a program(A, B, C or D) for "Program Select".
Program "A" is selected and specified in the figure on the left.

Sequence program settings window

2

Turn the rotary encoder and move the cursor to "1st" under"Exec group order".

3

3

Press the ENTER key.
The ENTER key lights up in green. You can now specify thevalue for "1st" (specify a group).

Value ready to be entered2

4

Use the rotary encoder to select a sequence group (1, 2, 3,or 4) for "1st".

5

5

Press the ENTER key.
The ENTER key light turns off and the program for "1st" is
specified.
Group "2" is specified for "1st" in the figure on the left.

4

6

Repeat operations 2 through 5 to specify the sequencegroups for "2nd" through "10th" under "Exec group order".
If no number is entered in the window, the corresponding
item is skipped.
In the figure on the left, sequence program A is executed in
the following order: Group 2→1→2→1→2→3.

7

Press the ESC key twice.
The sequence program settings are specified and the main
window is displayed.

6

Main window106

5-4-4. Executing Sequences
You can operate the specified waveforms and programs in the sequence execution window. To display this window, press
the "Seq" DIRECT key in the main window.
(Procedure)
1

Press the "Seq" DIRECT key while the unit is in LOAD OFF
mode.

Main window

1
The sequence execution window is displayed.
In the sequence execution window, you can specify thesequence waveform and the sequence program in the area
where the operation mode and C Range are displayed in themain window.

Sequence execution window
Specifying the waveform, program, and cycle value

2

Press the "Program/Wave" DIRECT key.
A drop-down list is displayed.

4

3

Use the rotary encoder to select a waveform or program.
"Pulse" is selected in the figure on the left.

4
Drop–down list

3

2

Press the ENTER key.
The green flashing ENTER key light turns off and the pulse
waveform is established.

5

Press the "Cycle" DIRECT key.
The ENTER key lights up in green. You can now enter the7"Cycle" value.
The "Cycle" value indicates the number of times the
waveform and program are repeated.

6

If necessary, use the rotary encoder and CURSOR keys tochange the "Cycle" value.

7
Value ready to be entered

5

6

Press the ENTER key.
The flashing green ENTER key light turns off and the "Cycle"
value is specified.
* If there are multiple cycles, the unit will enter LOAD OFF
mode for approximately 40ms between the time thecurrent waveform and program end and before the next
waveform and program start.

107

(Procedure)
Executing a sequence

8

Apply the voltage from the power supply source to the unit,
and then press the "Start" DIRECT key.
The unit switches to LOAD ON mode and the sequence
starts running.
The sequence execution status (RUN) is displayed in thelower left corner of the window.
The status displayed in the lower left depends on the type ofsequence that is executed (waveform or program).

Waveform execution display

8

Waveform:

LOAD ON

The execution status (RUN) and executed waveform (Pulse)
are displayed.
Program:
The execution status (RUN), executed program (A),Program execution display

executed group (2), and executed step (15) are displayed.
Pausing a sequence and resuming execution

9

Press the "Pause" DIRECT key to pause the sequence thatis being executed.
The sequence is paused but the unit remains in LOAD ON
mode.
"PAUSE" is displayed as the sequence execution status.
* If you pause a waveform, the unit will execute the waveform
again.

10
Sequence execution status

10

9

Press the "Start" DIRECT key to resume execution of thesequence.

LOAD ON

Stopping a sequence

11

Press the "Stop" DIRECT key to stop the sequence that isbeing executed.
The unit enters LOAD OFF mode and the sequence stops.

11

LOAD OFF

12

Press the ESC key to end the sequence waveform operation.
The main window is displayed.

12

Main window108

5-4-5．Elapsed time indication of the sequence program
Sets count the elapsed times when a sequence program is working.The count stops when you push the STOP key. But
Sets count it during PAUSE.
Sets count it by a unit until up to 9,999 hours 59 minutes 59 seconds for one second unit. Even the case beyond thegreatest elapsed time becomes the indication for 9,999 hours 59 minutes 59 seconds. Sets count it again from 0 seconds
when Sets do working again after STOP. In addition, it is 0 seconds at the time of the initialization of the sequence
program, the power supply injection.

Sequence execution window

Full screen window

109

6. Using the IF-80GUR Control Board
Each model in the LSA series can be fitted with the separately purchased IF-80GUR control board. Units with the
IF-80GUR are controlled via a GP-IB, USB, or RS-232C acting as a communication interface.

6-1. Preparing to Use the IF-80GUR Control Board
To use the IF-80GUR control board to control the unit, you must first mount and configure the board. After you configure
the board, you must then set up the communication interface on the unit.

6-1-1. Mounting the IF-80GUR Control Board
The following section describes how to mount the IF-80GUR control board. Make sure to exercise care when you mountthe board.
(Procedure)
1

If you plan to use the AC cable supplied with the product, youmust ground the housing of the unit.
Before you mount the IF-80GUR control board, check thecondition of the CN7 connector for the control board.
If a short connector is attached to the CN7 connector, youmust connect the communication interface GND (GP-IB,
USB, RS-232C) to the housing and then ground the housing.
If there is no short connector attached to the CN7 connector,
the communication interface GND (GP-IB, USB, RS-232C) is
used in a floating condition.
Determine whether a short connector needs to be attachedto the CN7 connector, making sure to consider the grounding
condition of the computer connected to the IF-80GUR control
board.
To ensure safety, we strongly recommend that you attach ashort connector to the CN7 connector and ground thecomputer you are using.
Remove the power cable of the power supply source.
Confirm that the power switch is in the OFF position, and that
nothing is displayed on the unit.

2

Remove the two screws that hold the rear blank panel inplace.

3

Remove the blank panel.
The blank panel is the gray part in the figure on the left.

4

Insert the IF-80GUR control board from the back of the unit.
Set the IF-80GUR control board into the grooves of the unit
and carefully insert it.

5

Use the two screws that were removed in operation 2 tosecure the IF-80GUR control board on the unit and hold it inplace.

1

IF-80GUR

2

4

3

4

5

110

6-1-2. Selecting a Communication Interface
Select the communication interface (GP-IB, USB or RS-232) you want to use.
If you select GP-IB or USB as the communication interface, you must specify the PC address.
(Procedure)
1

Press the MENU key while the unit is in LOAD OFF mode.
The menu window is displayed.

1

3

2

Turn the rotary encoder and select the "External Setup" icon.

3

Press the ENTER key.

4

Turn the rotary encoder and select "Select type".

5

Press the ENTER key. A drop-down list is displayed.

2"External": Control via external signal"Interface": Control via IF-80GUR

Drop–down list

5

4

6

Turn the rotary encoder and select "Interface".

7

Press the ENTER key.

7
The ENTER key light turns off and "Interface" is specified as
the external control of the unit.
6

8

Turn the rotary encoder and move the cursor to "Interface"under "Interface Setup".

9

9

Press the ENTER key.
The ENTER key lights up in green and the drop-down list for"Interface" is displayed.
The items displayed in the drop-down list are as follows:
GP-IB = GP-IB
USB = USB

Drop–down list

RS232C = RS-232C

8

10

Turn the rotary encoder and select the communicationinterface you want to use.

11

11

Press the ENTER key.
The ENTER key light turns off and the communicationinterface is specified.

10

In the figure on the left, "GP-IB" is specified as thecommunication interface.

111

(Procedure)
12

If you select "GP-IB" or "USB" as the communicationinterface, you must specify the PC address.
Turn the rotary encoder and move the cursor to "PC

11

Address" under "Interface Setup".

13

Press the ENTER key.
The ENTER key lights up in green. You can now enter the"PC Address" value.

10

In the figure on the left, "GP-IB" is specified as theValue ready to be enteredcommunication interface.

14

Use the rotary encoder and CURSOR keys to enter the valuefor "PC Address".

15

A value of between "1" and "30" can be specified for "PC
Address".
If you select GP-IB as the communication interface, the
GP-IB address is specified as the PC address.
14

15

Press the ENTER key.
The ENTER key light turns off and the "PC Address" value isspecified.
In the figure on the left, "5" is specified for "PC Address".

16

Turn the rotary encoder and move the cursor to "Ext Control"
under "External Setup".

17

17

Press the ENTER key.
The ENTER key begins to flash green and a drop-down list isdisplayed.
"Off": Indicates set values that can be modified on the front
panel.

16"Ext V": External voltage 0V→10V; set value 0 → rated
If "Ext V" is selected, the set values are as follows:
Drop–down list

CC mode: The values specified by the communicationinterface are superposed by the values
specified by the external voltage.
Other modes: The set values are the values specified by theexternal voltage. The values specified by thecommunication interface are ignored.

18

Press the ESC key twice.
The interface setup menu closes, and the main window isdisplayed.

18

Main window112

6-2. Communication Interfaces
6-2-1. Using GP-IB
The GP-IB interface system of the unit and IF-80GUR control board is compatible with the IEEE std 488.1-1987.

The table below describes the interface functions of the unit.
Table 6-1 Interface Functions
Function

SubsetDetails

Source HANDSHAKE

SH1

All functions.

Acceptor Handshake

AH1

All functions.

TalkerT6

Basic talker function, talker disable function via
designated listener, and serial port function.

Listener

L4

Basic listener function and listener disable function
via MTA function.

Service Request

SR1

All functions.

Remote Local

RL1

All functions.

Parallel Poll

PP0

No function.

Device Clear

DC1

All functions.

Device Trigger

DT0

No function.

Controller

C0

No function.

E1

Open collector bus driver is used.
State driver is used for EOI and DAV.

GP-IB Address
Specify the GP-IB address in the LCD window. A value of between "1" and "30" can be specified for the address. If anotherdevice has the same GP-IB address as the unit, you must change the GP-IB address of either the unit or the other device.
The default GP-IB address is "1".

113

Clear and Reset Functions
You can issue commands or perform specific operations on the unit to reset or clear settings and other information.
The following section describes the responses to the clear and reset functions.

①

IFC (Interface Clear)
The responses to the universal command IFC are as follows:- The state of the designated talker or listener is disabled.
- The GP-IB buffer, output queue, and stand-by commands are held.
- The SRQ setting is held.
- The remote status and LLO settings are held.
- The panel settings are held.

②

DCL, SDC (Device Clear)
The responses to the universal command DCL and address command SDC are as follows:- The GP-IB buffer, output queue, and stand-by commands are disabled.
- The interface state (the state of designated talker and listener) is held.
- The SRQ setting is held.
- The remote status and LLO settings are held.
- The panel settings are held.

③*RST (Reset Command)
The responses to the common command *RST are as follows:- The state of the designated talker or listener is disabled.
- The GP-IB buffer, output queue, and stand-by commands are disabled.
- The SRQ, status byte, and mask settings are cleared.
- The remote status and LLO settings are held.
- The panel settings are held.

④

Power Cycling
The operations performed when the power is cycled are as follows:- The state of the specified talker or listener is disabled.
- The GP-IB buffer, output queue, and stand-by commands are cleared.
- The SRQ, status byte, and mask settings are cleared.
- The unit switches to local operation. The LLO setting specified before power cycling is cleared.
- The panel settings specified before power cycling are held.

114

⑤

INIT (Initializing Command and Panel Initialization)
The operations performed by INIT are as follows:- The state of the specified talker or listener is disabled.
- The GP-IB buffer, output queue, and stand-by commands are cleared.
- The SRQ, status byte, and mask settings are cleared.
- The unit switches to local operation. The LLO setting specified before power cycling is cleared.
- The panel settings are initialized (returned to the factory default settings).
- All the sequence data transferred from external devices is cleared.

Remote and Local Functions
The system controller and the remote key of the unit are used to control the remote and local functions. The operation
mode of the unit should always be one of the following: local, remote, or remote with local lockout. The details of each
respective operation mode are as follows:

①

Local
The unit switches to local operation when:(a) The power switch is turned off and then turned back on.
(b) The remote key is pressed and the LED light turns off.
(c) A GTL command is received.
(d) Remote control is canceled while the unit is being remotely controlled.

②

RemoteWhen REN is True and the unit is designated by the listener, the unit switches to remote operation. At this time, the
LCD switches to the remote display.
When the unit is in remote operation mode, only the power switch and remote key can be used. The panel and otherkeys cannot be used to perform operations. When the unit is in local lockout operation mode, only the power switch
can be used.

115

Responses to Multi-line Message Commands
The following table describes the different multi-line message commands and their corresponding responses.
Type

Name

Universal Command

DCL

Clears the GP-IB buffer.

Yes

Address Command

Description

SupportSPE

Enables serial polling.

Yes

SPD

Disables serial polling.

Yes

PPU

Disables parallel polling.

No

LLO

Switches all the devices to local lockout and prohibits manual operation.

Yes

UNL

Disables the designated listener.

Yes

UNT

Disables the designated talker.

Yes

SDC

Clears the GP-IB buffer.

Yes

PPC

Enables lines to be allocated to the designated listener during parallel polling.

No

GTL

Switches the designated device to local.

Yes

GET

Executes a trigger for the designated device.

No

TCT

Enables the controller designated as the talker take control of a system in which
there are two or more controllers.

No

Program Message and Program Codes① Program Message Format
In order for the GP-IB interface to switch the unit to a specified state, a program message must be sent from thecontroller to the unit.
A program message consists of one or multiple program codes (commands). Program messages are received in
ASCII code. Each program message received by the unit can contain a maximum of 128 bytes (including delimiters) ofprogram codes.
If a message with multiple programs codes contains a non-designated header or outlying parameter, all of the codesthat precede the header or parameter are executed.

② Program Message Terminator
A terminator serves as the delimiter of a single program message. The unit supports the following terminators but
ignores CR.
1) LF
2) LF＋EOI
3) EOI
Separator for response message: ";" (ASCII code 3Bh)
Terminator of response message: CR+LF+EOI③ Program Code Separator
1) Program Message Unit Separator
A separator is used when transferring multiple messages at one time. In this case a semi colon ";" (ASCII code 3Bh)
is used as the separator.

116

6-2-2. Using USB
The following USB and command delimiters are valid:
LF+null packet, CR, LF+null packet.

The USB standard is USB 2.0 full speed (USB 1.1 compatible) at 12 Mbps.
There is a total of four USB end points.
EP0: Control transfer
EP1: Bulk in transfer (device to PC), 64 bytes.
EP2: Bulk out transfer (PC to device), 64 bytes.
EP3: Interrupt in transfer (device to PC), 2 bytes.
Self power: Self-power operation only. Operation is unspecified when the PC is a suspended state.
Current bus usage: 0mA
Number of interfaces: 1, Number of configurations: 1
In addition to the USB address, there is also a PC address (488ID) that is used to designate a device. A value of between
0 to 127 can be specified (obtained by class request).
The vendor ID of TEXIO TECHNOLOGY CORPORATION is "0x098f", and the product ID is "1008".

There is a total of six built-in string descriptors. The header is full byte length and two 0x03 bytes, and the character codeis Unicode. Thus, one 0x00 byte is added to each character after it is converted to ASCII.
0: Language code

0x09, 0x04

1: Vendor name"TEXIO TECHNOLOGY"

2: Product name

"LSA"

3: Serial number

Not used. Always "0".

4: Version number

The ROM version of the communication unit is displayed in "1.00" format.

5: Interface name"USB488"

The class requests are as follows:
IFC configuration:

Not configured.

SDC configuration:

Clear sent and received message buffer. Clear executions.

REN configuration:

Set to remote.

REN acquisition:

Read out remote state.

TRG configuration:

Set trigger execution.

TRG acquisition:

Acquire trigger state.

CLS configuration:

Clear status byte.

ID configuration:

Change the PC address setting.

ID acquisition:

Specify the PC address.

CAP acquisition:

Read out function enhancement data. --> Not required.

117

Data Transfer (Bulk Transfer)
When transferring data via a USB interface, data is transferred in packets. To support data transfer via a GP-IB interface,make sure to place CR(0x0d)+LF(0x0a) on the API side when you create a program. A null packet with a packet length of"0" is used on the unit side to indicate a state that is equal to EOI of the GP-IB interface.

Transferred Data
The differences between interfaces are not taken into consideration when data is received via bulk transfer. The data
enters the ring buffer of either a GP-IB and RS-232C interface, where the commands and parameters are analyzed,commands are executed, and responses are issued in order.

6-2-3. RS-232C
The RS-232C connector of the IF-80GUR control board is RJ-11 (modular for telephone).
Use optional modular cable (CB-0603S, CB-0615S, CB-0630S) and D-Sub modular conversion connector (TA-66) toconnect the RS-232C connector.
PC/sequencer
TA-66
Modular cable
CB-06xxS

D-Sub modular
Conversion Connector

Fig. 6-1

The following table describes the wiring for the D-Sub modular conversion connector (TA-66).

TA-66

RJ-11 sidePinarrangement

Pin No.

Signal name on
IF-80GUR

RJ-11-D-Sub
Wiring

2
5

TxD
RxD

⇔
⇔

4

S GND

⇔

1

F GND

⇔

D-Sub side
Signal name on
PC/sequencer side
Wiring
DCD: Connected to 6,
7
RxD
TxD
DTR: Connected to 8
S GND
DSR: Connected to 1,
7
RTS: Connected to 1,
6
CB: Connected to 4
RI
F GND

Pin No.

Pin arrangement

1
2
3
4
5
6
7
8
9
CASE

The standard communication speed is 57600bps. The data length is 8 bits, with 1 stop bit and no parity.
The communication format conforms to GP-IB. It does not conform to SRQ.

118

6-3. Interface Commands
6-3-1. Interface Command List
6-3-1-1. Unit Settings and Operation Commands
Command

Description

Query

Page

MODE {CC|CR|CREX|CP|CVCC|CVCR}

Specifies the operation mode.

Valid

122

COND[:CR]

Specifies the conductance for CR mode.

Valid

122

RESI[:CR]

Specifies the resistance for CR mode.

Valid

122

CURR[:CC]

Specifies the current value.

Valid

122

POW[:CP]

Specifies the power.

Valid

122

VOLT:CVCC

Specifies the voltage for CV+CC mode.

Valid

123

VOLT:CVCR

Specifies the voltage for CV+CR mode.

Valid

123

COND:CVCR

Specifies the conductance for CV+CR mode.

Valid

123

RESI:CVCR

Specifies the resistance for CV+CR mode.

Valid

123

CURR:CVCC

Specifies the current limit for CV+CC mode.

Valid

123

CVP {P1|P2|P3|P4|P5}

Specifies the response for CV mode.

Valid

123

CURR:PROT

Valid

124

Valid

124

Valid

124

Valid

124

VOLT:PROT:UND

Specifies the level of overcurrent protection.
Specifies the current limit and/or whether the unit enters
LOAD OFF mode when overcurrent occurs.
Specifies the level of overpower protection.
Specifies the power limit and/or whether the unit enters
LOAD OFF mode when overpower occurs.
Specifies the level of undervoltage protection.

Valid

124

PULS:MAIN:COND

Specifies the main conductance for switching mode.

Valid

125

PULS:SUB:COND

Specifies the subconductance for switching mode.

Valid

125

PULS:MAIN:RESI

Specifies the main resistance for switching mode.

Valid

125

PULS:SUB:RESI

Specifies the subresistance for switching mode.

Valid

125

PULS:MAIN:CURR

Specifies the main current for switching mode.

Valid

125

PULS:SUB:CURR

Specifies the subcurrent for switching mode.

Valid

125

PULS:MAIN:POW

Specifies the main power for switching mode.

Valid

125

PULS:SUB:POW

Specifies the subpower for switching mode.

Valid

126

PULS:MAIN:VOLT

Specifies the main voltage for switching mode.

Valid

126

PULS:SUB:VOLT

Specifies the subvoltage for switching mode.

Valid

126

PULS:DCYC

Specifies the switching duty.

Valid

126

PULS:FREQ

Valid

126

PULS:SLEWSpecifies the switching frequency.
Specifies the current slew rate for switching mode.

Valid

126

PULS:TASpecifies the switching main time.

Valid

126

PULS:TB

Valid

126

Valid

126

Valid

127

Valid

127

CURR:RANG {L|M|H}

Specifies the switching subtime.
Specifies the ON/OFF and MAIN/SUB settings forswitching mode.
Specifies the display items for switching mode.
Changes the Freq, Duty (F), Time (T) and External (E)settings for switching mode.
Specifies the current range.

Valid

127

VOLT:RANG {L|H}

Specifies the voltage range.

Valid

127

PRES:REC {1|2|3|4}

Recalls settings from the preset memory.

Valid

127

PRES:STOR {1|2|3|4}

Stores settings in the preset memory.

N/A

127

SST:TIME {1m|2m|5m|10m|20m|50m|100m|200m}

Specifies the soft start time.

Valid

127

SST:VOLT

Specifies the soft start voltage.
Specifies the OFF/ON setting for the external voltage
control and superposition.
Specifies whether the unit enters LOAD OFF or LOAD ON
mode.
Specifies and queries the response speed of the electricload.
Changes the internal and external voltage sensing.
Specifies the LOAD NONE, LOAD ON and LOAD OFF
time for the automatic LOAD function.
Ｓetting and the inquiry of the power supply for 0V.

Valid

127

Valid

128

Valid

128

Valid

128

Valid

128

Valid

128

Valid

128

CURR:PROT:ACT {LIM | TRIP}
POW:PROT
POW:PROT:ACT {LIM | TRIP}

PULS {OFF|ON|MAIN|SUB}
PULS:DISP {0|1}
PULS:TYPE {F|T|E}

EXT {OFF|V}
INP {OFF|ON}
RESP {SLOW|FAST}SENS {INT|EXT}TIMER {NONE|OFF|ON},****-**-**
BIASV

119

6-3-1-2. Measurement Commands
Command

Description

Query

Page

MEAS:CURR?
MEAS:POW?

Reads out the measured current.

Query only

128

Reads out the measured power.

Query only

128

MEAS:VOLT?

Reads out the measured voltage.

Query only

128

6-3-1-3. Other Commands
Command

Description

Query

Page

BUZZ {OFF|ON}

Specifies the buzzer setting (OFF/ON).

Valid

135

CONFIG:SAVE

Saves the setting to the unit.

N/A

135

DISP {NOM|ZOOM}

Displays in full screen.

Valid

135

ESC

Cancels the protection.

Invalid

135

INIT

Initializes the settings data (restores the factory defaults).

Invalid135

SYST:SET {LOC|REM|LLO}

Switches between local and remote operation.
Settings commands can only be entered via USB or
RS-232C.
Query commands can be entered via GP-IB, USB. or
RS-232C.

Valid

135

6-3-1-4. IEEE 488.2 Common Commands
Command

Description

Query

Page

*CLS

Clears the status register.

N/A

133

*ESE

Specifies the standard event status enable register.

Valid

132

*ESR?

Queries the standard event status register.

Query only

132

*IDN?

Queries the unit ID.

Query only

135

*OPC

Specifies the operation completion bit for the standard
event status register when all operations are completed.

Valid

132

*RST

Reset.

N/A

135

*SRE

Specifies the service request enable register.

Valid

133

*STB?

Reads out the status byte.

Query only

133

*TST?

Always replies "0".

Query only

132

Query

Page

Query only

130

Valid

130

6-3-1-5. SCPI Status Register Commands
Command

Description

STAT:OPER:COND?

Queries the condition of the OPERation status register.

STAT:OPER:ENAB

Enables the OPERation status register.

STAT:OPER:EVEN?

Queries events in the OPERation status register.

Query only

130

STAT:QUES:COND?

Queries the condition of the QUEStionable status
register.

Query only131

STAT:QUES:ENAB

Enables the QUEStionable status register.

Valid

131

STAT:QUES:EVEN?

Queries events in the QUEStionable status register.

Query only

131

120

6-3-1-6. Sequence Commands
Command

Description

Query

Page

PROG:GROUP

Designates a sequence group.

Valid

136

PROG:MODE {CC|CR|CP|CVCC|CVCR|CREX}

Specifies the mode for the sequence group.

Valid

136

PROG:LINP {OFF|ON}

Specifies whether the unit enters LOAD ON or LOAD
OFF mode when the sequence is finished.

Valid

136

PROG:NCYC

Specifies the number of cycles of a sequence group.

Valid

136

PROG:LVAL

Specifies the reference value when the sequence isfinished.

Valid

136

PROG:CRAN

Specifies the current range.

Valid

136

PROG:VRAN

Specifies the voltage range.

Valid

136

PROG:COND:CVCR

Specifies the conductance for CV+CR mode.

Valid

136

PROG:RESI:CVCR

Specifies the resistance for CV+CR mode.

Valid

136

PROG:CURR:CVCC

Specifies the current limit for CV+CC mode.

Valid

137

PROG:BRANI

Specifies the current for conditional branching.

Valid

137

PROG:BRANV

Specifies the voltage for conditional branching.

Valid

137

PROG:BRANT

Specifies the time for conditional branching.

Valid

137

PROG:ADD

Adds steps.

N/A

137

PROG:BEHAVE

Specifies the operation state of steps.

Valid

137

PROG:DEL

Deletes steps.

N/A

138

PROG:DEL:ALL

Deletes all the steps of the sequence group.

N/A

138

PROG:EDIT

Edits the step settings.

Valid

138

PROG:INS

Inserts a step (specifies the step number).

N/A

138

PROG:WAVE

Edits the waveform data of the step.

Valid

139

PROG:MS

Specifies the sequence program execution number.

Valid

140

PROG:MS:NCYC

Specifies the number of program execution cycles.

Valid

140

PROG:MS:ORDE

Specifies the execution order of the groups in thesequence program.

Valid

140

PROG:PG:WAVE

Edits the waveform data.

Valid

141

PROG {OFF|ON}

Specifies OFF or ON for sequence mode.

Valid

142

PROG:CLE

Initializes the sequence group.

N/A

142

PROG:COUN?

Queries the number of steps.

Query only142

PROG:COUN:ALL?

Queries the total number of steps (including 6
waveforms).

Query only142

PROG:LOAD

Reads out sequence data.

N/A

142

PROG:SAVE

Saves sequence data.

N/A

142

PROG:STAT {RUN|STOP|PAUS|CONT}

Executes the sequence group or modifies theoperation state.

Valid

142

PROG：TIMER?

Ｒeply of the elapsed time of the sequence program.

Query only

142

121

6-3-2. Interface Command Details- No distinction is made between capital letters and lowercase letters.
- Items indicated with < > or { } are parameters (set values). <SP> indicates a half-width space.
- Insert at least one half-width space <SP> between a command and a parameter.
- Exponential notation can be used for the parameter of the floating point.
- Items with [ ] can be omitted. (Ex. CURR[:CC], COND[:CR], RESI[:CR], POW[:CP])- The number of significant figures for the parameter of the floating point is the number of digits displayed on the LCD.

6-3-2-1. Operation Mode SET Commands
MODE
Description: Specifies and queries the operation mode.
SET command: MODE<SP>{CC|CR|CREX|CP|CVCC|CVCR}QUERY command: MODE?
Example) MODE<SP>CC* The parameter CR is for CRx1 mode. CREX is for CRx10 mode.

6-3-2-2. Parameter SET Commands
COND[:CR]
Description: Specifies and queries the conductance for CR mode.
SET command: COND<SP><conductance>
QUERY command: COND?
* When an intermediate value between the set value steps is sent, the value is rounded to the step value of thesmaller conductance.
Unit: S (Siemens)
Example) COND<SP>2.5
RESI[:CR]
Description: Specifies and queries the resistance for CR mode.
SET command: RESI<SP><resistor>QUERY command: RESI?
Unit: Ω* When an intermediate value between the set value steps is sent, the value is rounded to the step value of thelarger resistance.
Example) RESI<SP>2.5
CURR[:CC]
Description: Specifies and queries the current for CC mode.
SET command: CURR<SP><current>
QUERY command: CURR?
Unit: A
Example) CURR<SP>2.5
POW[:CP]
Description: Specifies and queries the power for CP mode.
SET command: POW<SP><power>
QUERY command: POW?
Unit: W
Example) POW<SP>2.5

122

VOLT:CVCC
Description: Specifies and queries the voltage for CV+CC mode.
SET command: VOLT:CVCC<SP><voltage>QUERY command: VOLT:CVCC?
Unit: V
Example) VOLT:CVCC<SP>2.5
VOLT:CVCR
Description: Specifies and queries the voltage for CV+CR mode.
SET command: VOLT:CVCR<SP><voltage>QUERY command: VOLT:CVCR?
Unit: V
Example) VOLT:CVCR<SP>2.5
COND:CVCR
Description: Specifies and queries the conductance for CV+CR mode.
SET command: COND:CVCR<SP><conductance>
QUERY command: COND:CVCR?
* When an intermediate value between the set value steps is sent, the value is rounded to the step value of thesmaller conductance.
Unit: S (Siemens)
Example) COND:CVCR<SP>2.5
RESI:CVCR
Description: Specifies and queries the resistance for CV+CR mode.
SET command: RESI:CVCR<SP><resistor>QUERY command: RESI:CVCR?
* When an intermediate value between the set value steps is sent, the value is rounded to the step value of thelarger resistance.
Unit: ΩExample) RESI:CVCR<SP>2.5
CURR:CVCC
Description: Specifies and queries the current for CV+CC mode.
SET command: CURR:CVCC<SP><current>
QUERY command: CURR:CVCC?
Unit: A
Example) CURR:CVCC<SP>2.5
CVP
Description: Specifies and queries the response parameter for CV mode.
SET command: CVP<SP>{P1|P2|P3|P4|P5}
QUERY command: CVP?
Example) CVP<SP>P3

123

6-3-2-3. Protect/Limit SET Commands
CURR:PROT
Description: Specifies and queries the set value of overcurrent protection.
SET command: CURR:PROT<SP><value>
QUERY command: CURR:PROT?
Unit: A
Example) CURR:PROT<SP>10.5
CURR:PROT:ACT
Description: Specifies and queries the operation to be executed when overcurrent occurs.
SET command: CURR:PROT:ACT<SP>{LIM|TRIP}QUERY command: CURR:PROT:ACT?
Example) CURR:PROT:ACT<SP>LIM
POW:PROT
Description: Specifies and queries the set value of overpower protection.
SET command: POW:PROT<SP><value>
QUERY command: POW:PROT?
Unit: W
Example) POW:PROT<SP>20.5
POW:PROT:ACT
Description: Specifies and queries the operation to be executed when overpower occurs.
SET command: POW:PROT:ACT<SP>{LIM|TRIP}QUERY command: POW:PROT:ACT?
Example) POW:PROT:ACT<SP>TRIP
VOLT:PROT:UND
Description: Specifies and queries the set value for undervoltage protection.
SET command: VOLT:PROT:UND<SP><voltage>QUERY command: VOLT:PROT:UND?
<voltage>: OFF, -0.5V to 150V. The setup resolution is 0.01V.
Unit: V
Example) VOLT:PROT:UND <SP>7.50

124

6-3-2-4. Switching Function SET Commands
PULS:MAIN:COND
Description: Specifies and queries the main conductance for switching mode.
SET command: PULS:MAIN:COND<SP><conductance>
QUERY command: PULS:MAIN:COND?
* When an intermediate value between the set value steps is sent, the value is rounded to the step value of thesmaller conductance.
Unit: S (Siemens)
Example) PULS:MAIN:COND <SP>2.5
PULS:SUB:COND
Description: Specifies and queries the subconductance for switching mode.
SET command: PULS:SUB:COND<SP><conductance>
QUERY command: PULS:SUB:COND?
* When an intermediate value between the set value steps is sent, the value is rounded to the step value of thesmaller conductance.
Unit: S (Siemens)
Example) PULS:SUB:COND <SP>2.5
PULS:MAIN:RESI
Description: Specifies and queries the main resistance for switching mode.
SET command: PULS:MAIN:RESI <SP><resistor>QUERY command: PULS:MAIN:RESI?
Unit: Ω* When an intermediate value between the set value steps is sent, the value is rounded to the step value of thelarger resistance.
Example) PULS:MAIN:RESI <SP>2.5
PULS:SUB:RESI
Description: Specifies and queries the subresistance for switching mode.
SET command: PULS:SUB:RESI <SP><resistor>QUERY command: PULS:SUB:RESI?
Unit: Ω* When an intermediate value between the set value steps is sent, the value is rounded to the step value of thelarger resistance.
Example) PULS:SUB:RESI <SP>2.5
PULS:MAIN:CURR
Description: Specifies and queries the main current for switching mode.
SET command: PULS:MAIN:CURR<SP><current>
QUERY command: PULS:MAIN:CURR?
Unit: A
Example) PULS:MAIN:CURR<SP>2.5
PULS:SUB:CURR
Description: Specifies and queries the subcurrent for switching mode.
SET command: PULS:SUB:CURR<SP><current>
QUERY command: PULS:SUB:CURR?
Unit: A
Example) PULS:SUB:CURR<SP>2.5
PULS:MAIN:POW
Description: Specifies and queries the main power for switching mode.
SET command: PULS:MAIN:POW <SP><power>
QUERY command: PULS:MAIN:POW?
Unit: W
Example) PULS:MAIN:POW <SP>2.5

125

PULS:SUB:POW
Description: Specifies and queries the subpower for switching mode.
SET command: PULS:SUB:POW <SP><power>
QUERY command: PULS:SUB:POW?
Unit: W
Example) PULS:SUB:POW <SP>2.5
PULS:MAIN:VOLT
Description: Specifies and queries the main voltage for switching mode.
SET command: PULS:MAIN:VOLT <SP><voltage>QUERY command: PULS:MAIN:VOLT?
Unit: V
Example) PULS:MAIN:VOLT <SP>2.5
PULS:SUB:VOLT
Description: Specifies and queries the subvoltage for switching mode.
SET command: PULS:SUB:VOLT <SP><voltage>QUERY command: PULS:SUB:VOLT?
Unit: V
Example) PULS:SUB:VOLT <SP>2.5
PULS:DCYC
Description: Specifies and queries the duty in switching mode.
SET command: PULS:DCYC<SP><value>
QUERY command: PULS:DCYC?
Unit: %
PULS:FREQ
Description: Specifies and queries the frequency for switching mode.
SET command: PULS:FREQ<SP><value>
QUERY command: PULS:FREQ?
Unit: Hz
Example) PULS:FREQ<SP>5000
PULS:SLEW
Description: Specifies and queries the current slew rate for switching mode.
SET command: PULS:SLEW <SP><slew>
QUERY command: PULS:SLEW?
Unit: A/μs
Example) PULS:SLEW<SP>1.5
PULS:TA
Description: Specifies and queries the main time for switching mode.
SET command: PULS:TA<SP><value>
QUERY command: PULS:TA?
Unit: s (sec)
Example) PULS:TA<SP>0.0005
PULS:TB
Description: Specifies and queries the subtime for switching mode.
SET command: PULS:TB<SP><value>
QUERY command: PULS:TB?
Unit: s (sec)
Example) PULS:TB<SP>0.002
PULS
Description: Specifies and queries the ON/OFF and MAIN/SUB settings for switching mode.
SET command: PULS<SP>{OFF|ON|MAIN|SUB}QUERY command: PULS?
Example) PULS<SP>ON126

PULS:DISP
Description: Specifies and queries the display items in switching mode.
SET command: PULS:DISP<SP>{0|1}
QUERY command: PULS:DISP?
Example) PULS:DISP<SP>1* 0: Slew rate, frequency and duty (or time) are displayed.
1: Set values of the operation mode are displayed.
PULS:TYPE
Description: Specifies and queries the Freq, Duty (F), Time (T), and External (E) settings for switching mode.
SET command: PULS:TYPE<SP>{F|T|E}
QUERY command: PULS:TYPE?
Example) PULS:TYPE<SP>T

6-3-2-5. Current Range SET Commands
CURR:RANG
Description: Specifies and queries the current range.
SET command: CURR:RANG<SP>{L|H}
QUERY command: CURR:RANG?
Example) CURR:RANG<SP>H
VOLT:RANG
Description: Specifies and queries the voltage range.
SET command: VOLT:RANG<SP>{L|H}
QUERY command: VOLT:RANG?
Example) VOLT:RANG<SP>L

6-3-2-6. Preset Function SET Commands
PRES:REC
Description: Recalls settings from the preset memory.
SET command: PRES:REC<SP>{1|2|3|4}
QUERY command: PRES:REC?
Example) PRES:REC<SP>1
PRES:STOR
Description: Stores setting in the preset memory.
SET command: PRES:STOR<SP>{1|2|3|4}
Example) PRES:STOR<SP>1

6-3-2-7. Soft Start Function SET Commands
SST:TIME
Description: Specifies and queries the soft start time.
SET command: SST:TIME<SP>{1m|2m|5m|10m|20m|50m|100m|200m}
QUERY command: SST:TIME?
Unit: sec
Example) SST:TIME<SP>1m
SST:VOLT
Description: Specifies and queries the soft start voltage.
SET command: SST:VOLT<SP><voltage>QUERY command: SST:VOLT?
<voltage>: OFF,-0.5V to 150V. The setup resolution is 0.01V.
Unit: V
Example) SST:VOLT<SP>10.0127

6-3-2-8. Input Status SET Commands
EXT
Specifies the setting (ON/OFF) of the external voltage control and the superposing function.
SET command: EXT<SP>{OFF|V}QUERY command: EXT?
Example) EXT<SP>VINP
Description: Specifies and queries whether the unit enters LOAD ON or LOAD OFF mode.
SET command: INP<SP>{OFF|ON}QUERY command: INP?
Example) INP<SP>ONRESP
Description: Specifies and queries the response speed of the electronic load.
SET command: RESP<SP>{SLOW|FAST}QUERY command: RESP?
Example) RESP<SP>SLOWSENSDescription: Specifies and queries the settings for external/internal voltage sensing.
SET command: SENS<SP>{INT|EXT}QUERY command: SENS?
Example) SENS<SP>EXT
TIMER
Description: Specifies and queries the LOAD ON/OFF time for the automatic LOAD function.
SET command: TIMER {NONE|OFF|ON},<time>* The format of <time> is separated with "-"; hour-minute-second.
QUERY command: TIMER?
Example) TIMER<SP>ON,1-12-30
BIASV
Description：Setting and the inquiry of the power supply for 0V.
SET command：BIASV<SP><voltage>QUERY command：BIASV?
<voltage>：OFF、0V to 1.5V.The setup resolution Is 0.05V.
Unit：V

6-3-2-9. Measuring Commands
MEAS:CURR?
Description: Reads out the measured current.
QUERY command: MEAS:CURR?
Unit: A
Example of response) 0.000
MEAS:POW?
Description: Reads out the measured power.
QUERY command: MEAS:POW?
Unit: W
Example of response) 0.000
MEAS:VOLT?
Description: Reads out the measured voltage.
QUERY command: MEAS:VOLT?
Unit: V
Example of response) 0.000

1286-3-2-10. Status Report
Questionable Condition
Condition
LSB

Enable

Event

0

UVP

UVP

OCP

1

OCP

OCP

OPP

2

OPP

OPP

OHA

3

OHA

OHA

REVA

4

REVA

REVA

OCA

5

OCA

OCA

OVA

6

OVA

OVA

OCL

7

OCL

OCL

OPL

8

OPL

OPL

+CC

9

+CC

+CC

+CR

10

+CR

+CR

NOT USED

11

EXTA

EXTA

NOT USED

12

0

0

0

NOT USED

13

0

0

0

NOT USED

14

0

0

0

NOT USEDMSB 15

0

0

0

UVP

OR

Output Queue

Event
0

OPC

NOT USED

1

0

Query Error

2

QYE

Device Dependant Error 3

DDE

Execution Error

4

EXE

Command Error

5

CME

User Request

6

URQ

NOT USED

70

Operation Complete

0

NOT USED

00

1

NOT USED002

Questionable Summary

0

0

3

Message Available

QUE

4Standard Event Summary

MAV

5
6

Enable7

Operational Summary

OR

ESB
RQS
MSS

0

OPR

Service Request
Positive Logic:
0 = No Event
1 = Event occured0

Enable

Event

0

CC

CC

CR

1

CRx1

CR

CP

2

CP

CP

NOT USED

3

CRx10

CRx10

NOT USED

4

0

0

CVCC

5

CVCC

CVCC

CVCR

6

CVCR

CVCR

SW

7

SW

NOT USED

8

0

SEQ

9

SEQ

NOT USED

10

0

0

0

NOT USED

11

0

0

0

NOT USED

12

0

0

0

NOT USED

13

0

0

0

NOT USED

14

0

0

0

NOT USEDMSB 15

0

0

0

CC

LSB

OR

0

Operational Condition
Condition

ServiceRequestEnableNOT USEDLSBStandard Event Status
LSB

Status
Byte

OR

SW
0

0
SEQ

129

6-3-2-11. OPERation Status Register
This register is primarily used to display the operation status.
Bit

Bit Weight

Bit Name

Description

0
1
2
3
4
5
6

1
2
4
8
16
32
64

CC
CRx1
CP
CRx10
NOT USED
CVCC
CVCR

1 in CC mode
1 in CRx1 mode
1 in CP mode
1 in CRx10 modeNot used
1 in CV+CC mode
1 in CV+CR mode

7
8
9
10
11
12
13
14
15

128
256
512
1024
2048
4096
8192
16384
32768

SW
NOT USEDSEQNOT USEDNOT USEDNOT USEDNOT USEDNOT USEDNOT USED

1 in switching modeNot used
1 in sequence modeNot usedNot usedNot usedNot usedNot used
Always "0"

STAT:OPER:COND?
Description: Reads out the condition of the OPERation status register.
The return <value> is a decimal number that indicates the total of all the event bits.
STAT:OPER:ENAB
Description: Enables the OPERation status register.
The <value> is a decimal number that indicates the total of all the enable bits.
STAT:OPER:ENAB?
Description: Queries the enabled setting of the OPERation status register.
The <value> is a decimal number that indicates the total of all the enable bits.
STAT:OPER:EVEN?
Description: Reads out the values of the events in the OPERation status register.
The return <value> is a decimal number that indicates the total of all the event bits.

1306-3-2-12. QUEStionable Status Register
This register is primarily used to display the error status.
Bit

Bit Weight

Bit Name

Description

0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

1
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192
16384
32768

UVP
OCP
OPP
OHA
REVA
OCA
OVA
OCL
OPL
+CC(CVCC)+CR(CVCR)EXTA
NOT USEDNOT USEDNOT USEDNOT USED

Undervoltage protection
Overcurrent protection
Overpower protection
Overheat alarm
Reverse connection alarm
Overcurrent alarm
Overvoltage alarm
Overcurrent limit
Overpower limit
CC limit in CV+CC mode
CR limit in CV+CR mode
External alarm
Not usedNot usedNot used
Always "0"

STAT:QUES:COND?
Description: Reads out the condition of the QUEStionable status register.
The return <value> is a decimal number that indicates the total of all the event bits.
STAT:QUES:ENAB
Description: Enables the QUEStionable status register.
The <value> is a decimal number that indicates the total of all the enable bits.
STAT:QUES:ENAB?
Description: Queries the enabled setting of the QUEStionable status register.
The return <value> is a decimal number that indicates the total of all the enable bits.
STAT:QUES:EVEN?
Description: Reads out the value of the events in the QUEStionable status register.
The return <value> is a decimal number that indicates the total of all the event bits.

1316-3-2-13. Standard Event Status Register
This register is controlled by *ESE, *ESE?, and *ESR?.
Bit

Bit Weight

Bit Name

Description

0

1

OPC

Operation complete

1

2

-

Not used

2

4

QYE

Query error

3

8

DDE

Device dependent error

4

16

EXE

Execution error

5

32

CME

Command error

6

64

URQ

User request

7

128

-

Not used*ESE
Description: Specifies and queries the setting of the standard event status enable register.
SET command: *ESE<SP><value>* The <value> is a decimal number that indicates the total of all the enable bits.
QUERY command: *ESE?
Example: *ESE<SP>16
Example response: 16*ESR?
Description: Queries the standard event status.
QUERY command: *ESR?
* The bit is cleared after the values of the events are read out.
Response example: 32*OPC
Description: Specifies the OPC bit of the standard event status register.
* When "*OPC?" is sent, "1" is returned to the output queue.
*TST?
Description: Always returns "0" to the output queue.

132

6-3-2-14. Status Byte Register and Service Request
Status Byte
Bit

Bit Weight

Bit Name

Description

0

1

BSY

Operation status 1: Executing

1

2

0

Not used

2

4

SYS

System error. Message in the error queue is valid.

3

8

QUE

Error summary

4

16

MAV

Message in the output queue is valid

5

32

ESB

Standard event summary

664

SRQ/RQS/MSS

Service request

7

128

OPR

Operation summary

0: Ready*SRE
Description: Specifies and queries the setting of the service request enable register.
SET command: *SRE<SP><value>* The <value> is a decimal number that indicates the total of all the enable bits.
QUERY command: *SRE?
* The return <value> is a decimal number that indicates the total of all the event bits.
Example) *SRE<SP>48*48 (decimal number) → 00110000 (binary number); MAV and ESB are enabled.
Response example: 48* The mask setting specified by this command is valid until the setting is modified or the power is shut off.
When the unit is turned back on, all of the bits are masked, regardless of what their previous settings were.
MAV (message available): Indicates that there is a message in the output queue.
ESB (event summary bit): Indicates that an event has been logged in the standard event status register.
RQS (request service): Indicates that a service request has been logged. This bit cannot be masked. (Even when 0 is
specified, it is assumed to be 1.)*STB?
Description: Reads out the status byte and MSS.
* The return <value> is a decimal number that indicates the total of all the event bits.
QUERY command: *STB?
Response example: 32* Only the bit specified by *SRE command is returned.
The status byte register cannot be cleared by performing a query with this command.
MAV (message available): Indicates that there is a message in the output queue.
ESB (event summary bit): Indicates that an event has been logged in the standard event status register.
RQS (request service) / MSS (master status summary): "1" is specified for MSS when the logical multiplication of all the status byte bits otherthan this bit (d6) and the service request enable register is "1". RQS is set to "1" when
MSS is "1", and cleared when MSS is cleared or serial polling is enabled.
* The status byte register cannot be cleared by performing a query with the STB command.
*CLS
Description: Clears all the registered events and saved error messages.
SET command: *CLS
* Masking status byte and event register
If a status byte or event register contains a bit that you do not want to use to trigger SRQ, use the *SRE and *ESEcommands to mask the status byte.

133

6-3-2-15. Supplementary Explanation about the Status Report
The unit is equipped with a function that issues a service request by conducting serial polling. After the request is issued,
the unit outputs a status report. The status summary is described in the figure below. When a service request is detected,
the controller side reads out the status byte and performs the necessary processing based on the byte that is read. All thestatuses are masked when the unit is turned on.
* The SRQ function is only available when using a GP-IB.

Status Byte Operation
When an event occurs, if one of the status byte bits is "1", bit 6 is set to "1" and a service request (SRQ) is issued. The unit
contains two status bits that can trigger SRQ.
ESB: Standard event register
MAV: Message available

Reading the Status Byte
There are two different methods that can be used to read out the status byte from the controller:
1) Performing a query with the *STB? command
When you use the *STB? command to perform a query, bit 6 reads out MSS. None of the status byte bits are cleared after
MSS is read out.
2) Serial Polling
When serial polling is enabled, bit 6 reads out RQS. Only RQS is cleared after it is read out.

Clearing the Status Byte
The status byte cannot be cleared directly. To clear the status byte, the event register that triggered the status byte needs
to be cleared.

When ESB occurs:
If ESB occurs, the *ESR? command is used to perform a query. All the bits are cleared after the standard event register isread out.
Receiving a *CLS command:
When the LSA series receives a *CLS command, the standard event register log is cleared.
→ Because the event register log is cleared in both cases 1) and 2), the corresponding bit of the status byte is also
cleared.
When MAV occurs:
The MAV bit is cleared by reading out all the output queues. Although the *CLS command cannot be used to clear all the
output queues, the queues are cleared when the unit receives the *CLS command immediately after the program
message terminator.
When the event register and MAV are cleared, the MSS of bit 6 is also cleared.

1346-3-2-16. Other Commands
BUZZ
Description: Specifies and queries the setting (ON/OFF) of the buzzer.
SET command: BUZZ<SP>{OFF|ON}QUERY command: BUZZ?
Example) BUZZ<SP>ONCONFIG:SAVE
Description: Saves configurations to the unit.
SET command: CONFIG:SAVE
Example) CONFIG:SAVE
DISP
Description: Displays in full screen.
SET command: DISP<SP>{NOM|ZOOM}QUERY command: DISP?
Example) DISP<SP>ZOOM
ESC
Description: Cancels the protection.
SET command: ESC
Example) ESC
INIT
Description: Initializes the settings data (restores the factory defaults).
SET command: INT
Example) INIT
SYST:SET
Description: Specifies and queries the settings of local operation, remote operation, and local lockout when a
GP-IB is not used.
* The query command is only when using a GP-IB.
SET command: SYST:SET<SP>{LOC|REM|LLO}QUERY command: SYST:SET?
Example) SYST:SET<SP>LLO*IDN?
Description: Queries the manufacturer name, model, serial number, and ROM version.
QUERY command: *IDN?
Response: co,obid,0,ver
co: Company name; TEXIO TECHNOLOGY
obid: Model; LSA-****
0: Always "0".
ver: ROM version; CPU1/CPU2/CPU3/CPU4
Response example: When the LSA-165 model is used and the ROM version of CPU1/CPU2/CPU3/CPU4 is 1.00.
TEXIO TECHNOLOGY, LSA-165,0,1.00/1.00/1.00/1.00*RST
Description: Clears the communication buffer, output queue, and standby commands.
SRQ, the status byte, and the mask settings are cleared.
SET command: *RST

135

6-3-2-17. Sequence Command Details
PROG:GROUP
Description: Designates the sequence group number. When a sequence group number is selected, thesequence-related commands are configured for the selected sequence group.
SET command: PROG:GROUP<SP><value>
Example) PROG:GROUP<SP>1* The <value> is an integer number from 1 to 4.
PROG:MODE
Description: Specifies and queries the operation mode for the selected sequence group.
SET command: PROG:MODE<SP>{CC|CR|CP|CVCC|CVCR|CREX}QUERY command: PROG:MODE?
Example) PROG:MODE<SP>CR* The parameter CR is for CRx1 mode. CREX is for CRx10 mode.
PROG:LINP
Description: Specifies and queries the LOAD ON mode and LOAD OFF mode settings for when the sequence
finishes.
SET command: PROG:LINP<SP>{OFF|ON}QUERY command: PROG:LINP?
Example) PROG:LINP<SP>OFF
PROG:NCYC
Description: Specifies and queries the number of execution cycles for the selected sequence group.
SET command: PROG:NCYC<SP><value>
QUERY command: PROG:NCYC?
* When the <value> is "INF", the number of cycles is infinite. When a <value> is specified that does not fall
between 1 and 9999, an execution error is issued.
Example) PROG:NCYC<SP>3
PROG:LVAL
Description: Specifies and queries the reference value for the moment when a sequence finishes.
SET command: PROG:LVAL<SP><value>
QUERY command: PROG:LVAL?
Example) PROG:LVAL<SP>5.00
PROG:CRAN
Description: Specifies and queries the current range of the selected sequence group.
SET command: PROG:CRAN<SP>{L|M|H}
QUERY command: PROG:CRAN?
Example) PROG:CRAN<SP>H
PROG:VRAN
Description: Specifies and queries the voltage range of the selected sequence group.
SET command: PROG:VRAN<SP>{L|H}
QUERY command: PROG:VRAN?
Example) PROG:VRAN<SP>LPROG:COND:CVCR
Description: Specifies and queries the conductance of the sequence CV+CR mode.
SET command: PROG:COND:CVCR<SP><value>
QUERY command: PROG:COND:CVCR?
Example) PROG:COND:CVCR<SP>1.00
PROG:RESI:CVCR
Description: Specifies and queries the resistance of the sequence CV+CR mode.
SET command: PROG:RESI:CVCR<SP><value>
QUERY command: PROG:RESI:CVCR?
Example) PROG:RESI:CVCR<SP>1.00

136

PROG:CURR:CVCC
Description: Specifies and queries the current of the sequence CV+CC mode.
SET command: PROG:CURR:CVCC<SP><value>
QUERY command: PROG:CURR:CVCC?
Example) PROG:CURR:CVCC<SP>1.00
PROG:BRANI
Description: Specifies and queries the setting of the current for conditional sequence branching.
SET command: PROG:BRANI<SP>{OFF|ON},<condition_value>,<MS|GROUP|PAUSE|LOADOFF>,<no>* <no> indicates a number that corresponds to the MS or GROUP selected for the <state>.
QUERY command: PROG:BRANI?
Example) PROG:BRANI<SP>ON,5.00,GROUP,1* When "OFF" is selected in the SET command, the parameters that follow can be omitted.
When <MS|GROUP|PAUSE|LOADOFF> is set to "PAUSE" or "LOADOFF" in the SET command, theparameters that follow can be omitted.
If the setting is off, the query response is "OFF".
PROG:BRANV
Description: Specifies and queries the setting of the voltage for conditional sequence branching.
SET command: PROG:BRANV<SP>{ OFF|ON },<condition_value>,<MS|GROUP|PAUSE|LOADOFF>,<no>* <no> indicates a number that corresponds to the MS or GROUP selected for the <state>.
QUERY command: PROG:BRANV?
Example) PROG:BRANV<SP>ON,5.00,MS,1* When "OFF" is selected in the SET command, the parameters that follow can be omitted.
When <MS|GROUP|PAUSE|LOADOFF> is set to "PAUSE" or "LOADOFF" in the SET command, theparameters that follow can be omitted.
If the setting is off, the query response is "OFF".
PROG:BRANT
Description: Specifies and queries the time setting for conditional sequence branching.
SET command: PROG:BRANT<SP>{ OFF|ON },<condition_value>,<MS|GROUP|PAUSE|LOADOFF>,<no>* <no> indicates a number that corresponds to the MS or GROUP selected for <state>.
The <condition_value> display is separated by "-" hyphens: hour-minute-second.
QUERY command: PROG:BRANT?
Example) PROG:BRANT<SP>ON,0-0-10,GROUP,1* When "OFF" is selected in the SET command, the parameters that follow can be omitted.
When <MS|GROUP|PAUSE|LOADOFF> is PAUSE or LOADOFF in the SET command, the parameters that
follow can be omitted.
If the setting is off, the query response is "OFF".
PROG:ADD
Description: Adds an additional step after the last step of the selected sequence group.
SET command: PROG:ADD<SP>{<current>|<conductance>|<power>|<voltage>},<time>,{wave OFF|ON},{load OFF|ON},{behave RUN|SKIP|PAUSE},{trigger OFF|ON},* The <time> display is separated by "-" hyphens: hour-minute-second.
Example) PROG:ADD<SP>3.35,0-0-0.005,OFF,OFF,RUN,OFF

137

PROG:BEHAVE
Description: Specifies and queries the operation of the selected step.
SET command: PROG:BEHAVE <SP><step>,{ RUN|SKIP|PAUSE }QUERY command: PROG:BEHAVE <SP><step>?
Example) PROG:BEHAVE <SP>2,RUN
PROG:DEL
Description: Deletes a step from the selected sequence group.
SET command: PROG:DEL<SP><step>
Example) PROG:DEL<SP>1
PROG:DEL:ALL
Description: Deletes all the steps of the selected sequence group.
SET command: PROG:DEL:ALL
Example) PROG:DEL:ALL
PROG:EDIT
Description: Edits the selected step and queries the actual settings.
SET command: PROG:EDIT<SP><step>{<current>|<conductance>|<power>|<voltage>},<time>,{wave OFF|ON},{load OFF|ON},{behave RUN|SKIP|PAUSE},{trigger OFF|ON},QUERY command: PROG:EDIT<SP><step>?
* The <time> display is separated by "-" hyphens: hour-minute-second.
Example) PROG:EDIT<SP>10,5.25,0-0-1,ON,OFF,RUN,OFF
PROG:INS
Description: Inserts a step in the selected sequence group. Specifies the step number of the step to be inserted
and the settings of the step.
SET command: PROG:INS<SP><step>,{<current>|<conductance>|<power>|<voltage>},<time>,{wave OFF|ON},{load OFF|ON},{behave RUN|SKIP|PAUSE},{trigger OFF|ON}* The <time> display is separated by "-" hyphens: hour-minute-second.
Example) PROG:INS<SP>9,5.0,0-0-0.03,OFF,OFF,RUN,OFF

138

PROG:WAVE
Description: Edits a waveform step of the selected sequence group and queries the actual settings.
SET command: PROG:WAVE<SP><step>,{RAMP|SQU|SINE|TRI|PULSE|RUSH},<val1>,<val2>,<val3>,<val4>,<val5>,<val6>
QUERY command: PROG:WAVE<SP><step>?
Example) PROG:WAVE<SP>15,SQU,10000.0,50,0.01,5,1,2

Waveform

Val

Value

Unit

RAMP

val1

Iset

[A]

val2

Tt

[s]

val1

Frequency

[Hz]

val2

Duty

[%]

val3

Tr/Tf

[ms]

val4

Iset1

[A]

val5

Iset2

[A]

val6

Cycle

[cycles]val1

Frequency

[Hz]

val2

P-P

[A]

val3

Center

[A]

val4

Cycle

[cycles]val1

Frequency

[Hz]

val2

P-P

[A]

val3

Center

[A]

val4

Duty

[%]

val5

Cycle

[cycles]

val1

Iset1

[A]

val2

Iset2

[A]

val3

Tp

[μs]

val4

P Count[cycles]

val5

Tb

[ms]

val6

Cycle

[cycles]

val1

Iset1

[A]

val2

Iset2

[A]

val3

TC

[s]

val4

Tset

[s]

SQU

SINE

TRI

PULSE

RUSH

* When the <value> is "INF", the number of cycles is infinite. When a <value> is specified that does not fall
between 1 and 9999, an execution error is issued.

139

PROG:MS
Description: Designates a sequence program number. When sequence program No. 1, 2, 3, or 4. is selected,
the sequence-related commands are configured for the selected sequence program. The waveform is specified
according to the selected waveform.
SET command: PROG:MS<SP>{1|2|3|4|RAMP|SQU|SINE|TRI|PULSE|RUSH}
Example) PROG:MS<SP>1* The relationship between the settings of the parameters and programs/waveforms is as follows:
Parameter
1
2
3
4
RAMP
SQU
SINE
TRI
PULSE
RUSH

Program/Waveform
Program A
Program B
Program C
Program D
Ramp wave
Square wave
Sine wave
Triangular wave
Pulse wave
Rush wave* A through D are used in place of 1 through 4.
PROG:MS:NCYC
Description: Specifies and queries the number of execution cycles of the selected sequence program.
SET command: PROG:MS:NCYC<SP><value>
QUERY command: PROG:MS:NCYC?
* When the <value> is "INF", the number of cycles is infinite. When a <value> is specified that does not fall
between 1 and 9999, an execution error is issued.
Example) PROG:MS:NCYC<SP>3
PROG:MS:ORDE
Description: Specifies and queries the execution order of the registered sequence group.
SET command: PROG:MS:ORDE<SP><value>,<value>,....., <value>
QUERY command: PROG:MS:ORDE?
Example) PROG:MS:ORDE<SP>1,3,2,4* When no data is registered and all are "NONE", the query response is "NONE". The <value> is an integer
number from 1 to 4.

140

PROG:PG:WAVE
Description: Edits the selected waveform and queries the actual settings.
SET command: PROG:PG:WAVE<SP>{RAMP|SQU|SINE|TRI|PULSE|RUSH},{L|M|H},<val1>,<val2>,<val3>,<val4>,<val5>,<val6>
QUERY command: PROG:PG:WAVE<SP>RECT?
Example) PROG:WAVE<SP>RECT,H,10000.0,50,0.01,5,1,2
Waveform

Val

Value

Unit

RAMP

val1

Iset

[A]

val2

Tt

[s]

val1

Frequency

[Hz]

val2

Duty

[%]

val3

Tr/Tf

[msec]

val4

Iset1

[A]

val5

Iset2

[A]

val6

Cycle

[cycles]val1

Frequency

[Hz]

val2

P-P

[A]

val3

Center

[A]

val4

Cycle

[cycles]val1

Frequency

[Hz]

val2

P-P

[A]

val3

Center

[A]

val4

Duty

[%]

val5

Cycle

[cycles]

val1

Iset1

[A]

val2

Iset2

[A]

val3

Tp

[us]

val4

P Count[cycles]

val5

Tb

[ms]

val6

Cycle

[cycles]

val1

Iset1

[A]

val2

Iset2

[A]

val3

TC

[s]

val4

Tset

[s]

SQU

SINE

TRI

PULSE

RUSH

* {L|M|H} is the current range.
* When the <value> for the Cycle setting is "INF", the number of cycles is infinite. When a <value> other than"INF" or one that does not fall between 1 and 9999 is specified, an execution error is issued.

141

PROG
Description: Specifies and queries the LOAD ON mode and LOAD OFF mode settings for sequence operation.
SET command: PROG<SP>{OFF|ON}QUERY command: PROG?
Example) PROG<SP>ONPROG:CLE
Description: Clears the sequence group.
SET command: PROG:CLE
Example) PROG:CLE
PROG:COUN?
Description: Queries the number of steps for the selected sequence group.
QUERY command: PROG:COUN?
Example) PROG:COUN?
PROG:COUN:ALL?
Description: Queries the total number of registered steps.
QUERY command: PROG:COUN:ALL?
Example) PROG:COUN:ALL?
PROG:LOAD
Description: Reads out the data for all of the registered groups and steps from the backup memory.
SET command: PROG:LOAD
Example) PROG:LOAD
PROG:SAVE
Description: Saves the data for the all of the registered groups and steps to the backup memory.
SET command: PROG:SAVE
Example) PROG:SAVE
PROG:STAT
Description: Changes the execution or operation status of the selected sequence group.
SET command: PROG:STAT<SP>{RUN|STOP|PAUS|CONT}* RUN: Executes the selected sequence.
STOP: Stops the selected sequence group.
PAUS: Pauses the selected sequence group.
CONT: Cancels the pause of the selected sequence group.
QUERY command: PROG:STAT?
Example) PROG:STAT<SP>RUN
PROG：TIMER?
Discripton：Inquiry of the elapsed time of the sequence program.
QUERY command： PROG：TIMER?
※Ｒeturn the format of the second、minutes and hours.
When it is over the greatest elapsed time with 9999-59-59 from 0-00-00, the reply range gives back9999-59-59.
Example） 9876-54-32

142

Appendix A. Troubleshooting
The following table describes problems with the unit that might occur and how to fix them.
ProblemPossible Cause

ActionThe POWER switch is thrown
but the unit does not turn on.
(The LCD on the front panel does
not light up.)

The AC power cable is broken or notconnected securely.

Check the connection of the AC power
cable.
Replace the cable if it is broken.
The fuse needs be replaced.
Contact the TEXIO service center.

The voltage supplied from the powersource is too high, or a unit
malfunction has caused the protection
fuse to blow.
The voltage supplied from the powersource is too low.
The input voltage is too low.

Adjust the input voltage.

The specified current or current limit is
too small.

Raise the specified current.

When it loads on, operation voltage
setting of “power supply for 0V” ishigher than input voltage.
The operation setting voltage of thepower supply for 0V is set "OFF".

Set voltage within operation voltage
setting of “power supply for 0V” oradjust operation voltage or input
voltage and turns on.
Please set the movement setting
voltage other than "OFF".

The unit cannot be switched to
LOAD OFF mode.

The external LOAD ON/OFF function is
ON in the external contact control.

Open pins No.10 and No.8 of the J1
connector on the back of the unit.

The input current is unstable or
there is too much noise.

Commercial
frequency
noise
isgenerated as a result of low supply
voltage.

Adjust the input voltage.

There is a source of strong magnetic orelectrical field near the unit.

Move the unit away from equipmentthat might produce a magnetic orelectrical field. In addition to
relocating the unit, make sure to twist
the wires.

The unit is switched to LOAD ON
mode but no current runs.

When 0V is input, a rating electric
current does not flow.
(In the case of V1 model)

Increase the input voltage.
(In order for the current to run, the input
voltage must be at least 1V.)

If a problem occurs that is not described in this table, or if a problem continues to persist after the potential cause iseliminated, contact the TEXIO service center.

!

WARNING

Do not remove the case.
The TEXIO service center will handle repair work that requires the case to be
removed, as well as the work involved in replacing fuses.

143Appendix B. Specifications
B-1. Input Specifications
Item

LSA-165

Input power

LSA-165V1

LSA-330

LSA-1000

H

0 W to 165 W

0 W to 330 W

0 W to 1000 W

ML

0 W to 16.5 W
0 W to 1.65 W

0 W to 33 W
0 W to 3.3 W
0 V to 150 V
1 V to 150 V

0 W to 100 W
0 W to 10 W

Input voltage range: CR mode *1
Input voltage range: Other modes *2
Input current range: Rear input terminal
0 A to 200 A
0 A to 33 A
0 A to 66 A
Input current range: Front input terminal
0 A to 66 A
Input terminal type
Front
Screw terminal
Rear
Copper bus bar*1: The unit can run when only 0 V of voltage is input. However, at least 1 V of voltage must be input in order for the current to run at avalue equal to the specified resistance.
*2: The unit can run when a voltage of 1 V or less is input. However, in this case the current that runs through the unit will be lower than
the specified current or the current calculated from the input voltage and settings. In CV mode, the current will cause the actual voltage
to be larger than the set voltage.

B-2. CC (Constant Current) Mode
Item
Current setting range

LSA-165

LSA-165V1
LSA-330
0 A to 33 A
0 A to 66 A
0 A to 3.3 A
0 A to 6.6 A
0 mA to 330 mA
0 mA to 660 mA
1 mA
2 mA
0.1 mA
0.2 mA
10 μA
20 μA
165 W
330 W
16.5 W
33 W
1.65 W
3.3 W±(0.2% of set+ 0.3% of fs)

H
M
L
Specified resolution
H
M
L
Maximum power
H
M
L
Specified accuracy (23°C±5°C)－
Ripple noise (rms)
Range of 10Hz
to 1MHz

H
M
L

Power supply on for 0V

Power supply off for 0V（0V/33A）(1.5V/33A)

25 mA
10mA
3mA

15 mA
5 mA
1 mA

10 mA
5 mA
1 mA

Stability (long-time drifting)±0.1% of fs typ

Temperature coefficient (for the
specified value)

100 ppm/°C

LSA-1000
0 A to 200 A
0 A to 20 A
0 mA to 2000 mA
6 mA
0.6 mA
60 μA
1000 W
100 W
10 W

－

－

15 mA
5 mA
1 mA

30 mA
10 mA
3 mA

B-3. CR (Constant Resistance) Mode
Item
Resistance setting range

LSA-165

LSA-330

LSA-1000

LOPEN,
1.81 kΩ to 30.3 mΩ
OPEN,
18.1kΩ to 303 mΩ
OPEN, 181 kΩ to 3.03 ΩOPEN,
909 Ω to 15.1 mΩ
OPEN,
9.09 kΩ to 151 mΩ
OPEN, 90.9 kΩ to 1.51 Ω

OPEN,
303 Ω to 5.05 mΩ
OPEN,
3.03 kΩ to 50.5 mΩ
OPEN, 30.3k Ω to 505 mΩ

H

0.55 mS

1.1 mS

3.3 mSM

55 μS

0.11 mS

0.33 mSL

5.5 μS

11 μS

33 μS

H

H

±(0.5% of set+ 0.2) A±(0.5% of set+ 20) mA+ Vin/Rin±(0.5% of set+ 2) mA+ Vin/Rin
10 mA±(0.5% of set+ 0.4) A±(0.5% of set+ 40) mA+ Vin/Rin±(0.5% of set+ 4) mA+ Vin/Rin
15 mA±(0.5% of set+ 1.2) A±(0.5% of set+ 120) mA+ Vin/Rin±(0.5% of set+ 12) mA+ Vin/Rin
30 mA

M

5 mA

5 mA

10 mA

L

1 mA

1 mA

3 mA

H
M

Specified resolution

Specified accuracy (conversion ofcurrent)
23°C ±5°C *3

MLRipple noise (rms)
Range of 10Hz to 1MHz

LSA-165V1

Stability (long-time drifting)±0.1% of fs typ
Temperature coefficient (for the specified
1000 ppm/°C
value)*3: Vin is the input voltage, and Rin is approximately 1 MΩ.
In CRx10 mode, the value is shifted 10 times toward to the larger resistance range. The rated current is 1/10 of the range.

144

B-4. CP (Constant Power) Mode
Item
Power setting range

LSA-165
H
M
L
H
M
L

Specified resolution

Specifiedaccuracy *3(23°C ±5°C)
Ripple noise (rms)
Within 10Hz - 1MHz

LSA-165V1

0 W to 165 W
0 W to 16.5 W
0 W to 1.65 W
10 mW
1 mW
0.1 mW

LSA-330

LSA-1000

0 W to 330 W
0 W to 33 W
0 W to 3.3 W
20 mW
2 mW
0.2 mW

0 W to 1000 W
0 W to 100 W
0 W to 10 W
60 mW
6 mW
0.6 mWH±(0.4% of set+ 1.6% of fs)

M
L
H
M
L

±(0.4% of set+ 1.6% of fs)+ Vin2/Rin
10 mA
5 mA
1 mA

15 mA
5 mA
1 mA
±0.2% of fs typ

Stability (long-time drifting)Temperature coefficient (for the specified
value)

30 mA
10 mA
3 mA

1000 ppm/°C*3:Vin is the input voltage, and Rin is approximately 1 MΩ.

B-5. CV+CC/CV+CR (Constant Voltage) Mode
Item
Voltage setting range

LSA-165

LSA-165V1

H
L
H
L

Specified resolution

LSA-330
0.1 V to 150 V
0.1 V to 15 V
10 mV
1 mV
1% of fs current±(0.2% of set+ 0.1% of fs)±0.2% of fs typ
10 mV

LSA-1000

Minimum current for stable operation
Specified accuracy (23°C ±5°C)
Stability (long-time drifting)
Input current variation
Temperature coefficient (for the specified
1000 ppm/°C
value)The maximum power varies according to the current range.
The rated current of the corresponding current range can only be run when a voltage of at least 1V is specified.
Input current variation: Current variance range of 10% to 100% for a rated current at input voltage of 1V (in remote sensing).
The specified ranges for +CC and +CR are the same as the respective ranges for CC mode and CRx1 mode. (No CRx10)
There are three current ranges available. Each range can be paired with either +CC and +CR, creating a total of six different
combinations.

B-6. Switching Mode
Item

LSA-165

Operation Mode
Frequency settingSpecified range

Time setting

LSA-330

CC, CR, CV, CP
1Hz to 20kHz
1Hz to 1kHz
1Hz to 99.9Hz: 0.1Hz
100Hz to 999Hz: 1Hz *4
1kHz to 9.99kHz: 10Hz *4
10kHz to 20kHz: 100Hz *4±1.5% of set
1% to 99%
0.1% step±1.5% of set

CC, CR, CP
CV

Specified resolution

Duty setting(when specifying
the frequency)*5

LSA-165V1

Specified accuracy
Specified range
Specified resolution
Specified accuracy
Specified
CC, CR, CP
resolution
CV

0.02 ms to 99.99 ms: 0.01 ms
0.5 ms to 99.99 ms: 0.01 ms
100 ms to 500 ms: 0.1ms±1.5% of set

Specified accuracy*4: Segments smaller than 1/(integral multiple of 10 μs) cannot be specified.
*5: The specified range for DUTY varies according to the frequency (minimum width: 10 μs).

145

LSA-1000

B-7. Slew Rate
Item
Operation mode
Specified range

LSA-165

LSA-165V1

LSA-330
LSA-1000
CC, CR, CP
H
2.64 mA/μs to 2.64 A/μs
5.28 mA/μs to 5.28 A/μs
16 mA/μs to 16 A/μs
M
0.264 mA/μs to 0.264 A/μs
0.528 mA/μs to 0.528 A/μs
1.6 mA/μs to 1.6 A/μs
L26.4 μA/μs to 26.4 mA/μs
52.8 μA/μs to 52.8 mA/μs
160 μA/μs to 160 mA/μs
Specified resolution
 26.4 mA/μs
 52.8 mA/μs
 160 mA/μs(2.64A/μs to 0.29A/μs)(5.28 A/μs to 0.581 A/μs)(16 A/μs to 1.76 A/μs)
 2.64 mA/μs
 5.28 mA/μs
 16 mA/μs
H(0.264A/μs to 29 mA/μs)(0.528 A/μs to 58.1 mA/μs)(1.6 A/μs to 176 mA/μs)
 0.264 mA/μs
 0.528 mA/μs
 1.6 mA/μs(26.4 mA/μs to 2.64 mA/μs)(52.8 mA/μs to 5.28 mA/μs)(160 mA/μs to 16 mA/μs)
 2.64 mA/μs
 5.28 mA/μs
 16 mA/μs(0.264 A/μs to 29.0 mA/μs)(0.528 A/μs to 58.1 mA/μs)(1.6 A/μs to 176 mA/μs)
 0.264 mA/μs
 0.528 mA/μs
 1.6 mA/μs
M(26.4 mA/μs to 2.90 mA/μs)(52.8 mA/μs to 5.81 mA/μs)(160 mA/μs to 17.6 mA/μs)
 26.4 μA/μs
 52.8 μA/μs
 160 μA/μs(2.64 mA/μs to 0.264 mA/μs)(5.28 mA/μs to 0.528 mA/μs)(16 mA/μs to 1.6 mA/μs)
 0.264 mA/μs
 0.528 mA/μs
 1.6 mA/μs(26.4 mA/μs to 2.9 mA/μs)(52.8 mA/μs to 5.81 mA/μs)(160 mA/μs to 17.6 mA/μs)
 26.4 μA/μs
 52.8 μA/μs
 160 μA/μs
L(2.64 mA/μs to 0.29 mA/μs)(5.28 mA/μs to 0.581 mA/μs)(16 mA/μs to 1.76 mA/μs)
 2.64 μA/μs
 5.28 μA/μs
 16 μA/μs(0.264 mA/μs to 26.4 μA/μs)(0.528 mA/μs to 52.8 μA/μs)(1.6 mA/μs to 160 μA/μs)
Specified accuracy
Representative values (when a voltage of 5V is input)
 ±(15% set +10 μs),  ±(15% set +100 μs),  ±(15% set +1000 μs)
Minimum reaction time
5 μs
The specified accuracy is for the time it takes the rated current to rise from 10% to 70% and fall from 90% to 30% when there is a current
variation of 1% to 100%.
The specified accuracy cannot be specified in CV mode.

B-8. Soft Start
Item
Operation mode
Time settingSpecified accuracy
Operation
Specified range
voltageSpecified resolution
Setting accuracy(23°C ±5°C)

LSA-165

LSA-165V1

LSA-330
LSA-1000CC
1 ms /2 ms /5 ms /10 ms /20 ms /50 ms /100 ms /200 ms±(30% of set+ 100 μs)
OFF, -0.5 V to 150 V
0.01 V±(0.1% of set+ 30 mV)

B-9. Remote Sensing
Item

LSA-165

LSA-165V1

Compensation voltage external
resistance control

LSA-330

LSA-1000

One way 2 V

The voltage range of the load input terminal is the minimum operation voltage to 150 V. A voltage of 2 V cannot be compensated if thevoltage of the load input terminal is 3 V or higher. （V1 model is 2V or higher）

B-10. External Voltage Control
Item
Controlled voltage

LSA-165
LSA-165V1
LSA-330
LSA-1000
0% to 100% of the rated current (CC mode), rated voltage (CV mode), and rated power (CPmode) when a voltage of 0 V to 10 V is input.
Maximum resistance to minimum resistance (CR mode) when a voltage of 0 V to 10 V is
input.
CC, CV, CP
1% of fs
LinearityCR
2% of fs
Input impedanceApprox. 10kΩ
In all modes other than CC mode, it takes approximately 0.2 seconds from the time the settings are specified until the time the actual
operation starts.

146

B-11. External Resistance Control
Controlled
resistance

Item
Proportion

Reciprocal
proportion

Linearity

LSA-165
LSA-165V1
LSA-330
LSA-1000
0% to 100% of the rated current (CC mode), rated voltage (CV mode), and rated power (CPmode) when a resistance of 0 Ω to 10 kΩ is input.
Maximum resistance to minimum resistance (CR mode) when a resistance of 0 Ω to 10 kΩ isinput.
0% to 100% of the rated current (CC mode), rated voltage (CV mode), and rated power (CPmode) when a resistance of 10 Ω to 0 kΩ is input.
Maximum resistance to minimum resistance (CR mode) when a resistance of 10 Ω to 0 kΩ isinput.
2% of fs

B-12. Master/Slave Parallel Operation
Item
LSA-165
LSA-165V1
LSA-330
Number of connected units
Maximum of 5 units (including master unit)
Master/slave operation can only be performed when using units that are of the same model.

LSA-1000

B-13. External Control
Item
Function

LSA-165
LSA-165V1
LSA-330
LSA-1000
Switches between LOAD ON and LOAD OFF mode, Main and Sub, and the current range of
H, M, and L.

B-14. Current Monitor Output
Item
Monitoring voltage
Monitoring accuracy

LSA-165

LSA-165V1
LSA-330
0 V to 10 V at 0 A to the rated current±1% of fs

LSA-1000

B-15. Direct Current Measurement (Current Display)
Item
Measurement range
Measurement resolution
V range
Measurement range
Measurement resolution
L range
Measurement range
Measurement resolution
Measuring accuracy (23°C ±5°C)
Measurement frequency
H Range

LSA-165
LSA-165V1
0.00 A to 33.00 A
10 mA
0.000 A to 3.300 A
1 mA
0.0 mA to 330.0 mA
0.1 mA

LSA-330
0.00 A to 66.00 A
10 mA
0.000 A to 6.600 A
1 mA
0.0 mA to 660.0 mA
0.1 mA±(0.2% of rdg + 0.3% of fs)
2 cycles/sec.

LSA-1000
0.0 A to 200.0 A
100 mA
0.00 A to 20.00 A
10 mA
0 mA to 2000 mA
1 mA

B-16. Summation Current Measurement
Item
LSA-165
LSA-165V1
LSA-330
H Range
10×N mA *7
M range
N mA *7
L range
0.1×N mA *7
Measurement frequency
2 cycles/sec.
*7: N represents the number of units connected for master/slave parallel operation.
Measurement
resolution

LSA-1000
100×N mA*7
10×N mA*7
N mA*7B-17. DC Voltage Measurement (Voltage Display)
15 V range

150 V range

Item
Measurement range
Measurement
resolution
Measuringaccuracy(23°C ±5°C)
Measurement range
Measurement
resolution
Measuringaccuracy(23°C ±5°C)

LSA-165

LSA-165V1
LSA-3300.000 V to 14.999 V
1 mV±(0.03% of rdg + 0.06% of fs)
15.00 V to 150.00 V
10 mV±(0.03% of rdg + 0.03% of fs)

Hysteresis
Temperature coefficient
Measurement frequency

14.98 V±(0.003% of rdg + 0.003% of fs)/°C
2 cycles/sec.

147

LSA-1000

B-18. DC Power Measurement (Power Display)
Item
LSA-165
LSA-165V1
LSA-330
Measurement range
0.0 W to 165.0 W
0.0 W to 330.0 W
H Range
Measurement
100 mW
resolution
Measurement range
0.00 W to 16.50 W
0.00 W to 33.00 W
M range
Measurement
10 mW
resolution
Measurement range
0.000 W to 1.650 W
0.000 W to 3.300 W
L range
Measurement
1 mW
resolution
Measurement frequency
2 cycles/sec.
The measured current and voltage are multiplied and displayed.

LSA-1000
0 W to 1000 W
1W
0.0 W to 100.0 W
100 mW
0.00 W to 10.00 W
10 mW

B-19. UVP (Under Voltage Protection)
150V range

Item
Specified range
Specified resolution
Specifiedaccuracy(23°C ±5°C)

LSA-165

LSA-165V1
LSA-330
OFF, -0.5 V to 150 V
0.01 V

LSA-1000±(0.1% of set + 30 mV)

B-20. OPP (Over Power Protection), OPL (Over Power Limit)
H Range

M range

L range

Item
Specified range
Specified resolution
Specifiedaccuracy(23°C ±5°C)
Specified range
Specified resolution
Specifiedaccuracy(23°C ±5°C)
Specified range
Specified resolution
Specifiedaccuracy(23°C ±5°C)

LSA-165
LSA-165V1
0 W to 173 W

LSA-330
0 W to 346 W
1W

LSA-1000
0 W to 1050 W±(0.5% of set + 1% of fs)
0 W to 17.3 W

0 W to 34.6 W
0.1 W

0 W to 105.0 W±(0.5% of set + 1% of fs)
0 W to 1.73 W

0 W to 3.46 W
0.01 W

0 W to 10.50 W±(0.5% of set + 1% of fs)

B-21. OCP (Over Current Protection), OCL (Over Current Limit)
Item
Setting range
Setting resolution
M range
Setting range
Setting resolution
L range
Setting range
Setting resolution
Setting accuracy (23°C ±5°C)
H Range

LSA-165
0.0 A to 34.6 A

LSA-165V1
0.0 A to 33.9 A

LSA-330
0.0 A to 69.2 A

LSA-1000
0.0 A to 210.0 A

0.1 A
0.00 A to 3.46 A

0.00 A to 6.92 A
10 mA
0.000 A to 0.346 A
0.000 A to 0.692 A
1 mA±(0.2% of set + 0.3% of fs)

0.00 A to 21.00 A
0.000 A to 2.100 A

B-22. TRIGGER
Item
TRIGGER IN
TRRIGER OUT

LSA-165
LSA-165V1
LSA-330
LSA-1000
Changes the sequence operation via pulse input (common to internal common terminal).
Outputs a pulse when changing the dynamic operation or sequence operation.
(Insulated from the internal common terminal)148

B-23. Sequence Function
Step

Sequencewave

Item
Maximum
specified
number of steps
Time setting
Setting resolution

LSA-165

LSA-165V1

LSA-330

LSA-1000

1018
10 μs to 999 hours 59 minutes, PAUSE, PASS
10 μs

Ramp pulse

Setting current level(Iset)：same as CC current set range and the resolution
Time before becoming the setting current level（Tt）：0.1s to 10000s.the resolution is 0.001s.

Square pulse

Frequency：1Hz to 3.03kHz、Resolution and the movement restrictions are the same asswitching movement
Duty：1% to 99%. Resolution and the movement restrictions are the same as switching
movement
Tr/Tf：0.01ms to 400ms、.the resolution is 0.01ms
Current leve（Iset1,2）：same as CC current set range and the resolution
The repetition number of times：1 to 9999 cycles. ∞（INF、Infinite time）

Sine wave

Frequency：1Hz to 3.03kHz、Resolution and the movement restrictions are the same asswitching movemen
The very much smallest current value width（P-P）：same as CC current set range and theresolution
Middle current value（Center）：same as CC current set range and the resolution

Chopping wave

Frequency：1Hz to 3.03kHz、Resolution and the movement restrictions are the same asswitching movemen
Maximum minimam current value width（P-P）：same as CC current set range and theresolution
Middle current value（Center）：same as CC current set range and the resolution
Duty：1% to 99%. Resolution and the movement restrictions are the same as switching
movement
The repetition number of times：1 cycle～9999 cycles. ∞（INF、Infinite time）

Pulse wave

Rush wave

Number of group cycles
Specified item
Procedure for specifying settings on theinternal memory

Pulse current level（Iset1,2）：same as CC current set range and the resolution
Pulse wave time (Tp)：10μs to 500μs、.the resolution is 10 μPulse number of cycles (P Count)：１ to 10 cycles、.the resolution is 1 cycle
Pulse wave time (Tb)：1ms to 10000ms、.the resolution is 1ms.
Current wave height level (Iset1)：same as CC current set range and the resolution
Current convergence level (Iset2): same as CC current set range and the resolution
Current convergence time (Tset):0.1s to 10000s、.the resolution is 0.001s
A time constant (TC):0.001s to 100s、.the resolution is 0.001
1 to 9999 cycles, ∞ (INF: infinite)
Setting, time
Settings are specified by using the panel or by using an external interface (optional) to
specify the settings from a computer.

An application software can also be used to specify the item settings.

B-24. Hardware Alarm
Item
Overvoltage
Overcurrent
Overheat
Reverse connection
External output
Internal ROM
Internal DSP
Interface
Front-terminal overcurrent

LSA-165
LSA-165V1
LSA-330
LSA-1000
Switches to LOAD OFF mode when a voltage of approximately 160 V or more is input.
Switches to LOAD OFF mode when the rated current (for the specific model and current
range) is exceeded.
Switches to LOAD OFF mode when the temperature of the internal radiator of the unit
exceeds a temperature of approximately 110°C.
Switches to LOAD OFF mode when a reverse voltage is input by the body diode and the fuse of
the internal MOSFET of the unit.
Switches to LOAD OFF mode when an alarm signal is input via the rear input terminal.
When a problem occurs in the internal ROM.
When a problem occurs in the internal DSP.
When the optional control board causes a problem to occur on the external interface.
Switches to LOAD OFF mode when the input current of the front input terminal exceeds
66A.
(Excludes the LSA-165 and LSA-330)

If a hardware alarm is issued, stop using the unit immediately. Turn off the power source and the unit and disconnect the wiring.

149

B-25. Use Environment and General Specifications
Item
Service temperature
Service humidity
Storage temperature
Storage humidity
AC Power Voltage
Power source frequency
Power consumption
WithstandPrimary Side - Case
voltagePrimarySide
Insulation
resistance

LSA-165

70 VA

LSA-165V1

LSA-330
0°C to 40°C
20% to 85%RH (No dew condensation)-20°C to 60°C
20% to 85%RH (No dew condensation)
100V AC to 240V AC
50Hz / 60Hz
175VA
75 VA

130 VA

1500V AC for 1 min.
3200V DC for 1 min.

Secondary Side
Primary Side - Case
PrimarySide
Secondary Side

Cooling system
Dimensions
H*W*D
(mm)
H*W*D (Maximum)
Weight

LSA-1000

500V DC 10MΩ or higher
500V DC 10MΩ or higher
Forced air cooling by the front fan and the rear exhaust.
124*140*383
124*140*383
124*421.5*383
148.4*141.8*446.1
148.4*141.8*446.1
140.8*423.3*449
Approx. 4.6 kg
Approx. 5.2kg
Approx. 5.5 kg
Approx. 12.3 kg

B-26. External Communication Control (when the optional control board IF-80GUR is equipped)
Item
Shared items
Control functions

Commands
GP-IB
Specifications
Interface functions
USB
Specifications
Connector type
Power supply
RS-232C
Specifications
Date transfer speed
Data bit
Connector type

LSA-165

LSA-165V1

LSA-330

LSA-1000

Able to specify the function settings of the electronic load and read out the measured
values.
Supports IEEE488.2-1992 universal commands. Also able to use commands specific tomodels in the LSA series.
IEEE488.1-1987 compliant.
SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT0, C0, E1
USB Revision 2.0, full speed (USB1.1 compliant), 12 Mbps, special device class.
USB series B
Self-power only
RS-232C compliant, no flow control.
57600 bps
Data: 8 [bit], stop bit: 1 [bit], parity: none.
RJ-11 (6-pin modular)
Able to be converted to a D-sub 9-pin female connector by using the CB-06xxS modular
cable (option) and D-sub-modular gender changer TA-66 (option).

150

Appendix C. Outside Dimensions<LSA-165 / LSA-165V1 / LSA-330>

Fig. C-1

Fig. C-2

Fig. C-3

151

<LSA-1000>

Fig. C-4

Fig. C-5

Fig. C-6
152

7F Towa Fudosan Shin Yokohama Bldg.
2-18-13, Shin Yokohama, Kohoku-ku,Yokohama, Kanagawa, 222-0033 Japan
http://www.texio.co.jp/