DIGITAL
MODEL

INDICATORＤＬＳ－５０２８Ａ

OPERATION MANUALTOYO SOKKI CO.,LTD.
964-24 Nippa-cho Kohoku-ku, Yokohama, 223-0057 Japan
TEL +81-45-540-8353
FAX +81-45-544-8354

MA4-00192-R5(2021/04)

－－ Table of contents －－Page§１． SAFETY NOTICE ............................................................................................. 4§２． SUMMARY ..................................................................................................... 5§３． APPEARANCE AND EACH PART NAME .................................................................. 5§４． OPERATION ................................................................................................... 6４－１) Measuring Mode ......................................................................................... 6４－２) Function Mode ........................................................................................... 6４－３) Test Mode ................................................................................................ 6４－４) Function of each button .............................................................................. 8４－５) Comparator setting :...................................................................... 9４－６) Function setting :.......................................................................... 9４－７) Ca l ib r a t i o n se t t in g....................................................................... 10§５． FUNCTION .................................................................................................. 11５－１) Zero Tracking function (ZT) ....................................................................... 11５－２) Preset Tare function (PT) .......................................................................... 11５－３) Auto Zero function (AZ) ............................................................................ 11５－４) Button Lock function ................................................................................ 11５－５) Calibration Lock function (Cal-Lock) ............................................................ 11５－６) Digital filer and Moving average function ...................................................... 12５－７) Minimum Scale function ............................................................................ 12５－８) Scaling of analog output (available when analog output OP-1, 2 or 5 installed) ... 12５－９) External command input ........................................................................... 12５－１０) Comparator function .............................................................................. 13５－１１) Current Loop serial output ...................................................................... 14§６． OPTION (PROVIDED AT THE TIME OF SHIPMENT) ............................................... 15６－１) 4mA to 20mA current output [OP-1] −5V to +5V voltage output [OP-2] 0 to 10V
voltage output [OP-5] ......................................................................................... 15６－２) RS-232C serial data output [OP-3] .............................................................. 15§７． CALIBRATION .............................................................................................. 16７－１) Necessary setting before calibration ............................................................ 16７－２) Actual Load Calibration ............................................................................. 16７－３) Equivalent Input Calibration ....................................................................... 17§８． TROUBLESHOOTING ...................................................................................... 18８－１) Basic check point ..................................................................................... 18８－２) Precautions at the time of calibration ........................................................... 18８－３) Countermeasures for unusual display ........................................................... 18８－４) Judgement whether this unit has malfunction ................................................ 18８－５) Checking a sensor (Load Cell) .................................................................... 19§９． TEST MODE ................................................................................................. 20９－１) Basic Operation ....................................................................................... 20９－２) Each test item ......................................................................................... 20§１０． INSTALLATION AND CONNECTION METHOD .................................................... 22１０－１) Installation environment etc. ................................................................... 22１０－２) Terminal Connection .............................................................................. 22§１１． SPECIFICATIONS ...................................................................................... 25
１１－１) Analog and A/D converter part ................................................................. 25
１１－２) Display part ......................................................................................... 25
１１－３) Zero point and Sensitivity calibration ........................................................ 25
１１－４) I/O part ............................................................................................... 25
１１－５) General ............................................................................................... 26§１２． LIST OF MODELS AND ACCESSORIES ............................................................. 27１２－１) Model .................................................................................................. 27１２－２) Accessories .......................................................................................... 27-2-

MA4-00192-R5

§１３． DIMENSIONAL DRAWING ............................................................................. 27§１４． TABLE OF FUNCTIONS AND OPERATIONS ....................................................... 28§１５． FUNCTIONAL BLOCK DIAGRAM ..................................................................... 32

This document is translated from MA4-187-R3 (Japanese)-3-

MA4-00192-R5

§１．Safety Notice
Please read this manual carefully to ensure the safety use of this unit.
Precautions in this chapter help to prevent any injury or damage to th e user and otherpersonnel, so please read the following precautions carefully.
Precaution on general

WARNING① Do not disassemble or modify this unit. Which may cause fire, injury, electric
shock, malfunction, etc.
② Keep liquids away from this unit. Otherwise, it may cause overheating, electric
shock, malfunction, etc.
③ Use a specified power supply. Using an improper power supply may cause
overheating, fire, malfunction, etc.

Precaution on wiring

CAUTION① Turn power OFF of this unit before wiring.
② Wire to the terminal correctly and firmly.

Precaution on installation

CAUTION
Do not install this unit to the following places.
① Place where exists direct sunlight.
② Place where exists condensation.
③ Place where exists exceeded temperature or humidity of specified value .
④ Place where exists much dust.
⑤ Place where exists inflammable gas or inflammable steam.
⑥ Place where exists an extensive vibration or impact.
⑦ Place where exists strong electromagnetic fields.
⑧ Place where exists other expected hazards
Warranty
This unit is covered by one year warranty from original delivery date against design andmanufactural failure under normal and safe use of this unit.
Any repair or exchange has to be paid even during warranty period if the following cases isapplied.
・Failure due to wrong usage, disassembly, improper power supply, accident or acts of God.
・Failure due to services or repair by a person other than TOYO staff.
Warranty does not cover an equipment connected to this unit. We are exempted from failure of
the connected equipment.

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§２．Summary
The model DLS-5028A is a digital indicator equipped with Auto Zero (AZ), Zero Tracking (ZT),
comparator function etc. which is designed specifically for strain gage type transducers andis most suitable for weighing systems using platform and tank /hopper scales.
The comparator has 4 channels, with fall corrections and has selection of both high and low
limit operations. Setting values can easily be done by a button operation.
This model is equipped with a current loop output which able to connect TOYO’s peripheral
equipment. Furthermore, it is able to output RS-232C serial data as option when specified at
the time of order.
An isolated current or voltage output which converted from analog signal is optionallyavailable when specified at the time of order.
Power supplied voltage is AC85 to 132V (standard) or DC20 to 27V (option).

§３． Appearance and Each part nameAppearance of the unit①

Status LEDs

SP1 to SP4
HOLD
PT
AZ

: Corresponding to comparator 1 to 4
Turn ON while each comparator is ON: Turn ON while HOLD is in operation: Turn ON while Preset Tare is in operation: Turn ON while Auto Zero is in operation②

Measured value
indicator

Display the measured value in Measuring Mode
Display guide characters and setting value in Function Mode③

Button switch

8 button switches to set various functions[MENU ],[ITEM ],[AZ ],[AZ.R ],[PT ],[],[LOCK],[]④

Terminal block

7.62mm pitch screw terminals for Load Cell or a sensor⑤

Terminal block

5mm pitch screw-less terminals for external command input andoptional output⑥

Terminal block

5mm pitch screw-less terminals for Relay output and current loop
output⑦

Terminal block

7.62mm pitch screw terminals for power line

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MA4-00192-R5

§４．Operation

This digital indicator has the following three modes.
４－１) Measuring Mode
・The measured value is displayed on the measured value indicator.
・

lock / unlock the buttons. Locking buttons helps to prevent
wrong operation.

・[AZ.R] button for 1 second
to cancel Auto Zero. Status LED [AZ] is lighted up while in AZ operation.

・t tare value.
.
Status LED [PT] is lighted up while the preset tare value is other t han zero.

４－２) Function Mode
There are three classifications of Function Mode.
Comparator setting
・Press [MENU ] button once in Measuring Mode to enter this mode.
・To set Quantitative value, Fall value and Hysteresis value of comparator.
・Press [ITEM ] button to display setting item and value in turn to confirm and modify.
・・.
Function setting
・Press [MENU ] button twice in Measuring Mode to enter this mode.
・To set Comparator judgement, Analog output conditions, External command input, shift to
Test Mode.
・Press [ITEM ] button to display setting item and value in turn to confirm and modify.
・To enter Test
to letCalibration setting
・Press [MENU ] button 3 times in Measuring Mode to enter this mode.
・To calibrate and set Calibration conditions, Digital Filter, Zero Tracking , etc.
・Press [ITEM ] button to display setting item and value in turn to confirm and modify.
・Unlock calibration-lock before calibration. Display
and disable to calibrate spanamount if calibration is locked.

４－３) Test Mode
・Turn power ON while pressing
button or press
button 3 times within 3 seconds rightafter powered ON. Also possible to enter in Function Mode.
・To check whether hardware of this unit is operated normally and correctly .

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MA4-00192-R5

Operation Hints

When the value or characters are blinking (7 segment LED), the setting will be changed bypressing
button. If it is not blinking, it will not be changed.
During setting ( the value or characters are blinking ), if you press
button, setting value
or item is not changed and the blinking stops and it return to Function Mode. This can also
be used as CANCEL during setting.
This unit keeps measuring and the comparator is working even in Function Mode.
Once pressing
button to memorize the setting, this unit operates function with thechanged setting.
In Function Mode, it return to Measuring Mode without changing the setting by pressing
button at least two times.

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MA4-00192-R5

４－４) Function of each button①[ MENU ] button
Press this button once in Measuring Mode to enter the comparator setting in Function Mode.
Press this button twice in Measuring Mode to enter the function setting in Function Mode.
Press this button 3 times in Measuring Mode to enter the calibration setting in Function
Mode.
This button is also used to select a function in order in Function Mode.

②[ ITEM ] button
Press this button to display an item of function in order in Function Mode.

③[ BACK/AZ ] button
Press this button for 1 second in Measuring Mode to operate Auto Zero function.
This button is also used to select a digit toward left in the setting numerical value inFunction Mode.

④[ NEXT/AZ.R ] button
Press this button for 1 second in Measuring Mode to cancel Auto Zero function.
This button is also used to select a digit toward right in the setting numerical value inFunction Mode.

⑤[ DOWN/PT ] button
Press this button for 1 second in Measuring Mode to set the Preset Tare value.
This button is also used to decrease the numerical value of the selected digit, or choose an
item or the value in selecting a candidate in reverse order in Function Mode.

⑥[ UP ] button
This button has no operation in Measuring Mode.
This button is used to increase the numerical value of the selected digit, or choose an itemor the value in selecting a candidate in order in Function Mode.

⑦[ ESCAPE ] button
Press this button for 2 seconds in Measuring Mode to lock / unlock the buttons
Pressing this button in Function Mode, it return to Measuring Mode.
Pressing this button at setting value or choosing item in Function Mode, it stops setting or
choosing.
Turn power ON while pressing this button or press this button 3 times within 3 seconds
right after powered ON to enter Cal-Lock setting.

⑧[ ENTER ] button
This button has no operation in Measuring Mode.
Pressing this button while the value or character is blinking in Function Mode, it memorizes
the setting and updates a function.
After the setting has been completed,is displayed for 2 seconds and it returns toFunction Mode.
If the setting is invalid, an error
is displayed for 2 seconds and it returns toFunction Mode and the setting is ignored.
If this button is pressed while the value or character is not blinking in Function Mode,nothing happens.

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４－５) Comparator setting :is guide character
Item list① Quantitative value of comparator
Ch.1 Quantitative value
polarity+4 digit
Ch.2 Quantitative value
polarity+4 digit
Ch.3 Quantitative value
polarity+4 digit
Ch.4 Quantitative value
polarity+4 digit

(+
(+
(+
(+

at the time of shipment)at the time of shipment)at the time of shipment)at the time of shipment)※ S pe c if y p o la r it y a f t e r se t t in g t h e v a lu e . P o l a r it y i s ca n ce le d if t h e se t t in g v a lu eb e co m e s z e r o .
② Fall value of comparator
Ch.1 Fall correction value
Ch.2 Fall correction value
Ch.3 Fall correction value
Ch.4 Fall correction value

3 digit
3 digit
3 digit
3 digit③ Hysteresis value of comparator
Common to Ch.1-Ch.4

2 digit((((at the time of shipment)at the time of shipment)at the time of shipment)at the time of shipment)(at the time of shipment)

４－６) Function setting :is guide character
Item list① Judgement of comparator
Ch.1 Judgement
Ch.2 Judgement
Ch.3 Judgement
Ch.4 Judgement

Select a candidate
Select a candidate
Select a candidate
Select a candidate

Ca n d i da t e s:
:No judgement,:Upper limit of Net value,:Upper limit of Gross value,

(
(
(
(

at the time of shipment)at the time of shipment)at the time of shipment)at the time of shipment):Lower limit of Net value,:Lower limit of Gross value② Data type of analog output
Select a candidate
Candidates::Net value,(at the time of shipment):Gross value③ Zero scale of analog output

polarity+4 digit(at the time of shipment)④ Full scale of analog output

polarity+4 digit(at the time of shipment)⑤ Resolution of analog output
Select a candidate(
at the time of shipment)
Candidates::Linked to displayed value resolution,:Internal maximum resolution⑥ Allocate a function to external command input (Terminal #8)
Select a candidate(
Candidates::Display Hold,:Zero correction⑦ Shift to Test Mode
Press
button to blink

and press-9-

at the time of shipment)

button 3 times to enter Test Mode.

MA4-00192-R5

４－７) Ca l ibr a t i o n se t t in g
is guide character
Item list① Zero calibration
No setting value nor candidate
Pressbutton to blink

and press② Span calibration

polarity+4 digit③ Minimum scale division
Candidates:, ,orSelect a candidate④ Strength of Digital filter
Candidates:(weak),,,

Select a candidate
,
,
,
,
,

button to calibrate zero(at the time of shipment)(orat the time of shipment)(at the time of shipment)(strong)⑤ Range to stop moving average
Candidates:,toSelect a candidate(
at the time of shipment)
step(unit is scale division)⑥ Number of times of moving average
Select a candidate(
Candidates:
,
,
,
,
,
or
(unit is times)

at the time of shipment)⑦ Range of zero tracking to be effective
Select a candidate(
at the time of shipment)
Candidates:
,
to
step
(unit is scale division)⑧ Working time of zero tracking
Candidates:orto⑨ Decimal point position
Candidates:(0),(0.0),

Select a candidate(
step(unit is second)
Select a candidate(0.00) or(0.000)⑩ Polarity of zero equivalent input value
Select a candidate
Candidates:(plus ‘+’) or(minus ’－’)

at the time of shipment)(at the time of shipment)(at the time of shipment)⑪ Zero equivalent input value
5 digit(Set the input voltage (mV/V) from Load Cell with no loadat the time of shipment)⑫ Display value of span equivalent input
4 digit(⑬ Polarity of span equivalent input value
Select a candidate
Candidates:(plus ‘+’) or(minus ’－’)
⑭ Span equivalent input value
5 digit(Set the input voltage (mV/V) from Load Cell with rated loadat the time of shipment)(at the time of shipment)at the time of shipment)

Whichever the actual load calibration or equivalent input calibration , the last calibration iseffective and memorized. Calibration menu which is not supposed to use should be skipped
using[ITEM] button.
Zero equivalent input calibration is effective after ⑩ and ⑪ have been set both together.
Span equivalent input calibration is effective after ⑫,⑬ and ⑭ have been set all together.

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MA4-00192-R5

§５．Function５－１) Zero Tracking function (ZT)
If the measured value is kept below than the specified value and period, judge as zero drift
phenomena and set the measured value to be zero.
Range of zero tracking to be effective
Working time of zero tracking

OFF, 0.5 to 10.0 step 0.5 as scale width
0.2, 0.5 to 5.0 step 0.5 as second※Caution of using zero tracking when loading the materials or ingredients into a large tankor scale, if the measured value varies slowly withi n the range of preset condition of zero
tracking, the measured value keeps to indicate zero. In that case, please set the conditionof zero tracking to ‘OFF’.
５－２) Preset Tare function (PT)
Press[PT] button for 1 second in Measuring Mode to display
and setting value.
After setting Preset Tare value, this unit always subtract preset Tare value from the measured
value. This is used to measure an object which has a known container weight.
LED [PT] is lighted ON when Preset Tare value is set to other than 0.
After zero calibration or span calibration has been done, Preset Tare value will be reset tozero.
Preset Tare value

polarity+4 digit(at the time of shipment)５－３) Auto Zero function (AZ)
Press
[AZ] button for 1 second in Measuring Mode, after memorizing the measured value
as the offset vale, displayed value is set to be zero, and from that point display the amount of
increase and decrease as Net value. (Display the value subtracted the offset level from Grossvalue).
Different from zero calibration, it is possible to operate AZ in all the rage of measured value.
Cancellation (return to Gross value) is also possible.
LED [AZ] will be lighted up when AZ is operated.
Press[AZ.R] button for 1 second in Measuring Mode to cancel (reset) AZ function.
AZ and AZ.R are also operated by external command input.
５－４) Button Lock function
This function prevents wrong operation by means of disabling button input.
Press
conds in Measuring Mode to lock the buttons. Indicate

for 2５－５) Calibration Lock function (Cal-Lock)
This function prevents to alter the calibration value from wrong operation.
①Turn power ON while pressing
button or press
button 3 times within 3 seconds
right after powered ON to enter Cal-Lock function.
②Pressto alternates to display as follows： Cal-Lock disable, Span calibration permitted.
： Cal-Lock enable, Span calibration prohibited.
③After selecting desired Call-Lock status, press
button to memorize. After displaying
for 2 seconds, this unit is reset and return to Measuring Mode.
If trying span calibration during Cal-Lock status,
is displayed instead of
andreturn to Measuring Mode. Span calibration value will not be changed.
In case of delivering this unit after calibrated at our factory, there is a case of Cal-Lock being
enabled. If this unit is already comprised in a system and the power cannot be turned OFF,enter Test Mode once. Press
button 3 times when displaying program version in Test Modeto reset this unit. Press
button 3 times within 3 seconds right after reset, it is able to enter
Cal-Lock function.

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MA4-00192-R5

５－６) Digital filer and Moving average function
These functions make the measured value be stable when an external vibration is applied
to Load Cell or a sensor. It becomes more stable when the value of Digital filter or Moving
average sets larger.
Strength of Digital filter:
1 to 10, 1 step
Number of times of Moving average: 1(OFF), 2, 4, 8, 16, 24, 32
When the strength of Digital filter or the number of times of Moving average is larger,
response of indicating the measured value is slower. Choose an appropriate value
according to the nature of a signal input from Load Cell or a sensor.
Digital filter=10
Moving average=32
StableLarge
Setting
Value

Measured value

Small
Digital filter=1
Moving average=1

Unstable

Fast

Response

Slow

If the measured value is stable but need the fast response, there is one method of using a
condition of stop moving average. If the measured value exceeds the preset value of, stop moving average and make the response fast temporarily, and back to moving
average once the measured value decreases to be within the preset value of.
Range to stop moving average:

OFF, 0.5 to 10.0 step 0.5 x scale division

When selected ‘OFF’, it is kept on moving average.

５－７) Minimum Scale function
By setting the minimum scale (scale division), it is able to change the displayed scale interval
to 1, 2, 5, 10.
Even if minimum scale has been changed, span volume will not be changed. In case of
decreasing minimum scale, if the displayed resolution is insufficient, it will be an error.
When span calibration is carried out, if the resolution cannot meet the requirement ofminimum scale, it will change minimum scale automatically and secures the resolution.
After span calibration, please confirm the setting value of minimum scale.
Quantitative value of comparator can be set with no relation of minimum scale but it compareswith the displayed value with specified minimum scale.
５－８) Scaling of analog output (available when analog output OP-1, 2 or 5 installed)
This is a function of scaling analog output of current / voltage against the preset value set
ator, regardless of zero or span of calibrated value.
Set a display value to output 4mA or 0V at
and to output 20mA, +5V or 10V at.
Analog output corresponding to Net value or Gross value is selected at.
５－９) External command inputThis unit has three external input, AZ, AZ.R, and user selected command. User can select acommand of HOLD or Zero correction atin Function Mode.
AZ/AZ.R command
AZ or AZ.R is enabled when the terminal #6 or #7 are electrically short to the terminal #9
for 0.2 second respectively. Status LED [AZ] is lighted up while Auto Zero is in operation.

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MA4-00192-R5

H OL D co m m a n d
HOLD is enabled during the terminal #8 are electrically short to the terminal #9 and LED[HOLD] is lighted up. The measured value is held during HOLD operation but thecomparators keep to work against the measured value and output a result to Rely.
Zero Correction command
Zero calibration value is corrected when the terminal #8 are electrically short to theterminal #9 for 0.2 second.
When measuring a weight of multiple materials, operating Zero correction instead of AZ
before loading the first material, more accurate measurement will be done by operate AZ.R
after the last material loaded.
５－１０) Comparator function
This unit has 4 independent comparators which compare with Net value or Gross value andcan output through Relay1 to Relay4 respectively.
Comparison to Gross value is suitable for a tank or a hopper application.
Comparison to Net value is suitable for measurement of multiple materials charged /discharged application.
When Relay1 to Relay4 output is MAKE, corresponding LED [SP1] to [SP4] is lighted up.
Also comparators have Fall correction (independent) value and Hysteresis value (common).
1). Range of setting value
Quantitative value
Fall correction value
Hysteresis value

,

,
,

,
,

−9999 to +9999
0 to 999
0 to 99,2). Judgement type
Data type of each quantitative value is selected from Net value or Gross value. To monitor
charging/discharging materials, upper limit judgement or lower limit judgement isselected at each comparator independently. These setting is selected from candidates asfollows at,,,
in Function Mode
Candidates::No judgement,:Upper limit of Net value,:Upper limit of Gross value,:Lower limit of Net value,:Lower limit of Gross value3). Explanation of each judgement① Upper limit judgement
In case of charging control, use this mode.
Judgment of comparison
Output ON :Measured value ≧ Quantitative value－Fall value
Output OFF :Measured Value ＜ Quantitative value－Fall value－Hysteresis value
Quantitative value
Hysteresis value
Measured value(Net or Gross)(−)

Fall value(+)

ON
Comparator output

OFF- 13 -

MA4-00192-R5

② Lower limit judgement
In case of discharging control, use this mode.
Judgment of comparison
Output ON :Measured value ≦ Quantitative value + Fall value
Output OFF : Measured value ＞ Quantitative value ＋ Fall value + Hysteresis value
Quantitative value
Fall value
Measured value(Net or Gross)(−)

Hysteresis value(+)

ON

Comparator output

OFF５－１１) Current Loop serial output
This function is a serial interface dedicated for a TOYO’s peripheral equipment. If TOYO’s
CV-3010(serial to BCD converter) is connected to this interface, the measured value of thisunit can be output as parallel BCD signal. Also an external indicator or a printer of TOYO canbe connected to this interface.
This interface is isolated from an inner circuit and connected to an external equipmen t through4 to 20mA current loop signal, thus less effected from noise and a cable can be extended up
to 100m.
CV-3010 can be connected through RS-232C, but if the distance between this unit andCV-3010 is more than 15m, current loop interface should be used.
There is no function setting of this interface. Use a two -core cable and connect from output‘S-out’ of this unit to input ‘C/L’ of external equipment. Two-core can be connected whicheveras there is no polarity of them.
There is no use of a shielded cable in short distance, but wire apart from a power line or a drive
motor line with noise.

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MA4-00192-R5

§６．Option (Provided at the time of shipment)
６－１) 4mA to 20mA current output [OP-1] −5V to +5V voltage output [OP-2]
0 to 10V voltage output [OP-5]
This option enables to output analog signal which is converted from digital to analog andisolated from input signal from Load Cell. Output signal is based on Net value or Grossvalue which is selected atin Function Mode.
It is possible to scale an analog output of current / voltage against the preset value set ator, regardless of zero or span of calibrated value.
Resolution of analog output
is selected in Function Mode
When
is selected, resolution of analog output is linked to displayed value resolution.
Whenis selected, resolution of analog output becomes internal maximum resolution.
Except OP-2, analog output is unipolar output, but it is able to output minus side slightly,
which amounts to about 2% of full scale of output. Also it is able to output exceeding therange of plus side about 2% of it. Analog output is isolated from the inner circuit.
1 ) . Adjustment and setting① Zero and sensitivity of analog output is alr eady adjusted at the time of shipment. But
re-adjustment is possible in Test Mode. Please refer tosection §9 Test Mode.
② Select data type of analog output
in Function Mode.
: Output Net value: Output Gross value③ Scale analog output atandin Function Mode.
Set displayed value when output 4mA or 0V at
in Function Mode.
Set displayed value when output 20mA, +5V or 10V at
in Function Mode.
④ Select a resolution of analog output
in Function Mode.
: Linked to displayed value resolution: No relation with displayed value resolution, internal maximum resolution2 ) . Confirmation
It is able to check analog output 1.6mA step in current output and 1V step in voltage
output atof Test Mode. It may help to check the linearity of analog output.
６－２) RS-232C serial data output [OP-3]
This option enables to output serial data of displayed value through interface RS -232C, which
is isolated from internal circuit. No command accept ed from the receiver.
1) . Specifications
Data
Data output
Data format
with decimal point
without decimal point
when over load
Interface standard
Speed
ProtocolFormatCommunication distance

Displayed value (without unit)
Stream data per sampling
Numeric and alphabet capital letter
1
2
3
4
5
6
7
8
9
10 11 12
W T
,
±
0
1
2
3
.
4
CR LF
W T
,
±
0
0
1
2
3
4
CR LF
O
L
,
±
9
9
9
9
.
9
CR LF
( CR = 0DH , L F= 0A H )RS-232C conformity (isolated output)
2400 bps
Start-Stop Synchronous (Asynchronous) type
Data bit: 7 bit, Stop bit: 2bit, Parity: EVEN,
Data: ASCII code
Maximum 15m2) . Setting
No setting of RS-232C is required. Please set at the receiver side.

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MA4-00192-R5

§７．Calibration
Calibration is performed by “Actual Load Calibration” using a weight or other article with aknown weight as a reference, or by “Equivalent Input Calibration” using numerical value
which is input by buttons.
This unit is calibrated with the la st calibration of whichever “Actual Load Calibration” or“Equivalent Input Calibration”.
“Actual Load Calibration” is recommended to calibrate, but it depends on the en vironment orconditions surrounding of this unit.
In case of purchasing this unit together with Load Cell as a combination, there is a case where
calibration has already been done in TOYO factory.
When calibration has being done, the value of preset Tare becomes zero.
The followings are methods of setting calibration in Function Mode from Measuring Mode.
Press
button several times to leave Function Mode to Measuring Mode.
７－１) Necessary setting before calibration
In case of buttons locked, unlock the buttons first to press
button for 2 seconds.
In case of Cal-Lock status, unlock the Cal-Lock first.
Please refer to 5-5) Cal-Lock function for the method of unlock.
７－２) Actual Load Calibration
1 ) ． Remove a load from Load Cell and perform zero point calibration.
①Press[MENU] button 3 times. Enter Function Mode.
is displayed.
②Press[ITEM] button once.
is displayed.
③Pressbutton. Indication ofstart blinking.
④Pressbutton to calibrate zero point and memorize the calibration value.
When calibration performed successfully,
is displayed for 2 seconds andproceed to the setting of span calibration.
is indicated if it exceeds the range ofzero point calibration.
2 ) ． Place a weight or other article with a known weight on Load Cell and perform span(sensitivity) calibration.
①Press[MENU] button 3 times. Enter Function Mode.
is displayed.
②Press[ITEM] button twice.
and setting value is displayed alternatively.
③Pressbutton to select a digit andbutton to change the value to set a known
weight.
Po l a r it y “ −” i s se t a t t h e le f t e n d d ig it u s in g
button. N o t i ce t h a t p o la r i t y“ − ” is c a n c e le d if t h e se t t in g v a lu e be c o m e s z e r o .
④Pressbutton to calibrate span and memorize the span value. When calibration
performed successfully,
is displayed for 2 seconds and proceed to the setting ofminimum scale division.
is indicated if it exceeds the range of span calibration or span amount is notenough to fulfill the resolution based on minimum scale division.
To interrupt this procedure, press
button while the value is blinking, the blinking will
be stopped, press
button again, it shall return to Measuring Mode.
3 ) ． Unload a weight or other article from Load Cell.
4 ) ． Set a minimum scale division
The preset value at the time of shipment is 1.
Due to A/D converter in this unit has high sensitivity, If the specified minimum scale
division exceeds the sensitivity 0.5 μV/division, Error might not occur but fluctuation
may become larger. In that case, set the value of minimum scale division l arger until
the fluctuation is not noticeable.
Minimum scale division (number of skips) is selected from 1, 2, 5 or 10.
Even if the minimum scale division is changed, span amount will not be changed.
In case resolution cannot be achieved at the minimum scale which set at Function
Mode, the minimum scale will automatically be changed in order to achieve theresolution. Therefore please check the setting of minimum scale after span calibration.

- 16 -

MA4-00192-R5

5)． Press

button twice to return to Measuring Mode.

6)． Check whether the measured value is zero.
If the measured value is other than zero, please repeat the procedures from 1) .
7)． Set digital filter, moving average, zero tracking and decimal point position, if needed.
8)． It is able to perform zero correction in Test Mode. When a zero deviation is known, thisunit can perform zero correction even if there is a load on Load Cell.
７－３) Equivalent Input Calibration
1 ) ． Polarity of zero equivalent input value①Press[MENU] button 3 times. Enter Function Mode.
is displayed.
②Press[ITEM] button 10 times.
and a pre-selected polarity is displayed.
③Pressbutton to select a polarity
or.
④Pressbutton to memorize the setting andis displayed for 2 seconds andproceed to setting the value of zero equivalent input.
2 ) ． Zero equivalent input value①Press[MENU] button 3 times. Enter Function Mode.
is displayed.
②Press[ITEM] button 11 times.
and setting value is displayed alternatively.
③Pressbutton to select a digit andbutton to change the value to set input
voltage (mV/V) from Load Cell with no load.
④Pressbutton to calibrate zero point and memorize the calibration value.
When calibration performed successfully,
is displayed for 2 seconds andproceed to the setting the displayed value of span amount .
is indicated if it
exceeds the range of zero point calibration.
3 ) ． Di sp la y e d v a lu e o f sp a n a m o u n t①Press[MENU] button 3 times. Enter Function Mode.
is displayed.
②Press[ITEM] button 12 times.
and setting value is displayed alternatively.
③Pressbutton to select a digit andbutton to change the value to set thedisplayed value of span amount.
Po l a r it y “ − ” is se t a t t h e l e f t e n d dig it u sin gbutton. N o t ice t h a t p o l a r it y “ − ” isca n ce le d if t h e se t t in g v a l u e be co m e s z e r o .
④Pressbutton to memorize the value andis displayed for 2 seconds andproceed to the setting the polarity of span equivalent input value .
4 ) ． Po l a r it y o f sp a n e q u i v a le n t in pu t v a l u e①Press[MENU] button 3 times. Enter Function Mode.
is displayed.
②Press[ITEM] button 13 times.
and a pre-selected polarity is displayed.
③Pressbutton to select a polarity
or.
④Pressbutton to memorize the setting andis displayed for 2 seconds andproceed to setting the value of span equivalent input.
5 ) ． Spa n e q u iv a le n t i n p u t v a lu e
①Press[MENU] button 3 times. Enter Function Mode.
is displayed.
②Press[ITEM] button 14 times.
and setting value is displayed alternatively.
③Pressbutton to select a digit andbutton to change the value to set input
voltage (mV/V) from Load Cell with rated load.
④Pressbutton to calibrate span amount and memorize the calibration value .
When calibration performed successfully,
is displayed for 2 seconds and returnto the top of menu.
is indicated if it exceeds the range of span calibration.
6 ) ． Press

button to return to Measuring Mode.

- 17 -

MA4-00192-R5

§８．Troubleshooting
If this unit does not work properly, please take the following measures . If the trouble stillcannot be solved, then please contact our company.
At query, please inform us the model name, product serial number, and conditions of this unit
as detailed as possible. The model name of Load Cell or sensor connected to this unit shouldbe also informed.
８－１) Basic check point
1) . Please check if using a correct power supply.
This unit is supplied voltage with DC24V.
2) . Please check that wires are connected to the terminal base properly and firmly.
８－２) Precautions at the time of calibration
1 ) ． Error occurs at the time of zero calibration.
・In case of exceeding the range of zero calibration.
To perform zero calibration, Load Cell output with no load should be in the range of‐2.8～+2.8mV/V. Please call us if it is out of the range of ±2.8mV/V, when using Load
Cell whose rated output is more than 3.3mV/V.
2 ) ． Error occurs at the time of span calibration, or display value is not correct as set in spancalibration.
・This unit cannot measure in a system that the sum of initial tare value and measured
value exceed 3.3mV/V. Please contact us when the rated output of Load Cell is more than
3.3mV/V.
・Input signal from Load Cell at span calibration is smaller than at zero calibration
This unit can be used when span amount value is lower than zero calibration value,
where Load Cell output is minus when loaded. Please notice the polarity (±) of
displayed value.
3 ) ． Fluctuation of indication
・If span amount is not enough to fulfill the resolution based on specified minimum scale
division.
The input sensitivity of this unit is 0.5μV/digit and indication resolution is 1/ 5000 at
0.5mV/V input. If the resolution is more than this, fluctuation of indication becomeslarger. In this case, please increase a minimum scale division in Function Mode until not
to be noticeable of fluctuation.
８－３) Countermeasures for unusual display1 ) ． The measured value is blinking (over load indication) when not overloaded
A part of Load Cell cable might be broken or a Load Cell itself might be defective.
Please confirm the input voltage (mV/V) from Load Cell in Test Mode.
８－４) Judgement whether this unit has malfunction1). Please confirm whether a sensor excitation voltage is correct. Disconnect a sensor fromthis unit and check the voltage by a tester between #1(+EXC) and #2(-EXC) of terminal
block. Please check whether it is stable at 5V±0.5V.
If it is not stable, power circuit for a sensor in this unit is failure.
2) . Short-circuit ( Jumper between No.3 (+SIG)～No.4 (-SIG) ) of input voltage from asensor at terminal block and display input voltage (mV/V) in Test Mode. Then pleasecheck if the input voltage is stable nearest to zero.
If it is not stable, this unit is failure. If stable, please check a sensor side.

- 18 -

MA4-00192-R5

3) . Checking digital input/output
Please check the external input/output in Test Mode.
８－５) Checking a sensor (Load Cell)
Good or bad rough judgement can be done by measuring input/outpu t resistance andinsulation resistance because Load Cell is structured by a bridge circuit. (Please makesure to power OFF this unit first and disconnect Load Cell before checking resistance)1)． Fault judging method by resistance of Load Cell
Check bridge resistance of Load Cell by a tester and confirm whether input/output
resistance are correct.
2)． Fault judging method by insulation resistance of Load Cell
Measure the insulation resistance between the shield line and other with voltage lessthan 50V. If the insulation resistance shows more than 1000MΩ, insulation of Load Cell
is no problem.

- 19 -

MA4-00192-R5

§９．Test Mode
The response of external input/output and indication of display is different during Test Mode.
Please take measures to the connected external equipment to keep it from abnormality.
Test Mode confirms conditions of this unit by manual operation.
９－１) Basic Operation
1 ) ． To enter Test Mode, selectin Function Mode and press
button let theindication blink and press
button 3 times.
Also enter Test Mode by turn power ON while pressing
button, or pressing
button 3 times within 3 seconds right after powered ON.
To leave Test Mode, turn power OFF or press
Program Version.

button 3 times during Model Name and2 ) ． The test item will proceed to the next by pressing
previous by pressing[ITEM] button.
９－２) Each test item
Guide display Test item
Model Name
Program
VersionCheck LEDs

Check button

Check external
outputCheck external
input

Adjust analog
outputCheck analog
output[MENU] button and return to theContents
Press
button 3 times to return to Measuring Mode.
Display program version
Example:--- Version 2.00
Press
button 3 times to return to Measuring Mode.
The order to check LEDs as follows
1. All LEDs are turned OFF
2. Each segment of all 7 segment LEDs and status LEDs
are turned ON in order
3. All decimal point are turned ON
4. All segment of each 7 segment LEDs are turned ONfrom left side to right side
5. All status LEDs are turned ON
6. All LEDs are turned ON and back to 1.
Display allocated number of buttons[MENU ],[ITEM ],[AZ ],[AZ.R ],
[PT ],[ ],[LOCK ],
[ ]Proceed to the next item to press[MENU] twice.
Return to the previous item to press[ITEM] twice.
Display Relay number and output to specified Relay-Relay 4 is MAKE/BREAK when pressing
button-Relay 3 is MAKE/BREAK when pressing
button-Relay 2 is MAKE/BREAK when pressing
button-Relay 1 is MAKE/BREAK when pressing
button
Display external input-External input (AZ) is ON-External input (AZ.R) is ON-External input (CMD) is ON
Press
button to adjust 4mA / 0V
±xx: Press
to increase/decrease 4mA (OP-1)±xx: Press
to increase/decrease 0V (OP-2,5)
Press
button to adjust 20mA / 5V/ 10V±xx: Press
to increase/decrease 20mA (OP-1)±xx: Press
to increase/decrease 5V (OP-2)±xx: Press
to increase/decrease 10V (OP-5)
Pressbutton to adjust -5V±xx: Press
to increase/decrease -5V (OP-2)
Press
button to memorize
Select analog output 11 steps
Press
button to increase/decrease analog output- 20 -

MA4-00192-R5

This function helps to confirm the linearity of analog
outputOP-1 (mA)

OP-2 (V)

Display input voltage (mV/V) from Load Cell
Accuracy is ±5% at 1mV/V input
Minus is indicated as status LEDs (SP1 to SP4)
The value is blinking when A/D over
Press
[AZ] button to set the value to be zero
Press
[AZ.R] button to restore the value
Zero correction
Operate zero correction even if loaded on Load Cell.
Press
button to display the measured value.
Pressbutton to increase/decrease zero point.
Pressbutton to memorize the zero correction.
is indicated only when OP-1, OP-2 or OP-5 is installed(Indicate forone second)/OP-5 (V)Check input
voltage from
Load Cell- 21 -

MA4-00192-R5

§１０．Installation and Connection method１０－１) Installation environment etc.
1)． Operating temperature range is −10℃ to 40℃
Please install in a place not exposed to direct sunlight.
2 ) ． This unit is operated with power AC85 to 132V (standard) or DC20 to 27V (option)
If stable power supply for AC85 to 132V is not available, use of a constant-voltage
transformer is recommended.
3 ) ． This unit is designed to fix by a panel-mount.
Please make use of the attached metal fittings to fix it on.

１０－２) Terminal Connection
1)． Terminals for Load Cell
(Upper side of rear panel, 7.62mm pitch screw terminal)No.
Signal connection
１+EXC
Excitation voltage to Load Cell (＋)
２－EXC
Excitation voltage to Load Cell (－)
３＋SIG
Input signal from Load Cell (＋)
４－SIG
Input signal from Load Cell (－)
５
SHL
Shield line of Load Cell cable
Use a 4-core shielded cable and wire apart from a power line or a motor drive line withnoise to prevent malfunction.
The cable wiring color varies depending on the manufacturer or a model.
Refer to the Test Report attached to Load Cell, check the signal name and color, andconnect correctly and firmly.
Applicable crimp spec.: M3 with a width of max. 6mm2)． Terminals for external command input and option output(Upper side of rear panel, 5mm pitch screw-less terminal)No.
Signal connection
6
AZ
External command input (Auto Zero)
7
AZ.R
External command input (Auto Zero Reset)
8
CMD
External command input (Command)
9
COM
Common ground to No.6,7,8
10
OP +Output signal of option (+)
11
OP −Output signal of option (−)
Wire apart from a power line or a motor drive line with noise to prevent malfunction .
No.10 and 11 are analog signal output (OP-1/-2/-5) or RS-232C output (OP-3).
Applicable wire spec.: Strand wire = 0.2～1.25mm 2 (AWG24～16),
Peeled wire length = 11mm

+5V
1 kΩ
⑥⑦⑧ (AZ,AZ.R,CMD)⑨ (COM)

DLS-5028A○(External command input circuit)- 22 -

MA4-00192-R5

3)． Terminals for external output and current loop output(Lower side of rear panel, 5mm pitch screw-less terminal)No.
Signal connection
12
RY1
Comparator 1 contact output
13
RY2
Comparator 2 contact output
14
RY3
Comparator 3 contact output
15
RY4
Comparator 4 contact output
16
RY.COM
Common ground to No.12,13,14,15
17
RY.COM
18
C/L
Current Loop output (No polarity)
19
C/L
Applicable wire spec.: Strand wire = 0.2～1.25mm 2 (AWG24～16),
Peeled wire length = 11mm
Relay contact spec. : Rated output DC24V 1A, AC125V 0.5A
BREAK when powered OFF
Take measures against noise. Add a diode when DC load or add
a spark killer when AC load. Recommend to use DC load for
reducing noise perspective.

⑫⑬⑭⑮(RY1,RY2,RY3,RY4)○⑯⑰(RY.COM)
DLS-5028A(Comparator contact output circuit)4)． Terminals for power line
(Lower side of rear panel, 7.62mm pitch screw terminal)No.
Signal connection
20
Ｅ
Grounding21
L+
DC20～27V (option)
AC85～132V (standard)
22
N−
DC0V (option)
Applicable crimp spec.: M3 with a width of max. 6mm
A shield line of each cable should be grounded to the terminal of this unit or the external
connected unit so not to emerge ground loop.
Please connect the terminal #20(E) to ground resistance 100Ω or less.
Power supplied voltage is AC85 to 132V (standard) or DC20 to 27V (option). Please checka name plate of this unit and confirm whether supplied voltage is correct.
This unit doesn’t have a function of remote sensing. If connecting Load Cell with 6-core wireof remote sensing, connect +SEN together with +EXC and −SEN together with −EXC.
If a wire is thinner than AWG26, recommend to crimp a rod terminal to the tip of wire to fit
the screw-less terminal better.
The screw-less terminal of this unit (SATO PARTS: ML-800 series) is not applicable to generalrod terminal which is thick and short.
Use a ferrule with insulation sleeve, which conforms DIN (German Industry Standard), at the tipof wire.

- 23 -

MA4-00192-R5

Recommend to use a AI 0.25-12BU (Phoenix Contact), which is contact length 12mm (8mm is
not applicable) and suitable for 0.25 square wire. Insert two AWG28 wires into this ferrule. Usea dedicated crimping tool ZA3 (Phoenix Contact) to crimp it.
Wire coating should be inserted
inside of ferrule sleeve
12mm or more

Additional compensated wire iscut at the edge of ferrule sleeve(AWG28 or AWG26)
Recommended ferrule: AI 0.25-12BU (sleeve color: blue), Phoenix Contact- 24 -

MA4-00192-R5

§１１． Specifications
１１－１) Analog and A/D converter part1)． Input sensitivity:
0.5μV/digit or more
Display resolution: Max. 1/9,999 at 1.0mV/V input
Display resolution: Max. 1/5,000 at 0.5mV/V input2 ) ． Non-linearity:±0.03％FS±1 count3 ) ． Temperature characteristics: Zero point±0.005％FS/℃
Sensitivity±0.005％Reading/℃
4 ) ． Frequency characteristics:
approx. 1 Hz (−3dB)5 ) ． Transducer power supply:
DC5V±5%, 60mA
(Four 350Ω type sensors can be connected)１１－２) Display part1)．Display element① Measured value display:② Status display:2 ) ． Measured value display① Maximum reading:② Decimal point:③ Over indication:④ Unit:⑤ Sampling period:3 ) ． Status display

LED 7-segment, 4-digit, Red, character height 14mm
LED, Red, 7 pcs±９９９９ (Zero suppress reading)select 0 to 3 digit after decimal point()
All digit blink when the measured value exceeds ±9999
or input voltage exceeds ±3.3mV/V
kg
Other unit is pasted by unit seal as the followings.
kg, g, t, N, kN, N･m, kN･m, kPa, MPa, mm, %240msec. (4.2 times/sec)
SP(Set Point)1 to 4, HOLD, PT(Preset Tare),
AZ(Auto Zero)

１１－３) Zero point and Sensitivity calibration
1 ) ． Zero point calibration:
adjustable by input signal of −2.8～2.8mV/V
2)． Sensitivity calibration:
adjustable by span amount of −3.0～3.0mV/V
3)． Zero equivalent input cal.:adjustable by button operation of −2.8～2.8mV/V
4)． Span equivalent input cal.:adjustable by button operation of −3.0～3.0mV/V
5)． Displayed span amount:±9999 by button operation
6)． Accuracy by equivalent input cal.:±0.2%FS (at 1.0mV/V input)※ The sum of initial Tare value (zero point input value)
and maximum measured value (span amount) should
not exceed ±3.3 mV/V.
１１－４) I/O part1 ) ． Operation button①Button switch:

8 buttons
Item select button : [MENU ], [ITEM ]Arrow button :[AZ ], [AZ.R ], [PT ], [Escape button:[LOCK ]
Entry button:[ ]2)． External command input (3bit)①Auto Zero (AZ):
One shot MAKE contact (pulse width 0.2sec)②Auto Zero Reset (AZ.R):
One shot MAKE contact (pulse width 0.2sec)③User selected command:a.) Display Hold
Continuous MAKE contactb.) Zero correction
One shot MAKE contact (pulse width 0.2sec)- 25 -]

MA4-00192-R5

3)． External output (4bit)①Output signal:②Rated output:

Four Relay contact outputs, two commons
Relay 1 to 4: OMRON G5V-1 ‘a’ contact,(BREAK when powered OFF)DC24V 1A (Resistive load)
AC125V 0.5A (Resistive load)
Recommend to use DC.

4)． Analog output (option-1, 2, 5)①Output signal
Digital to analog conversion,
Linked to displayed value, isolated output.
4 to 20mA(resistive load ≦ 510Ω)--- OP-1−5 to +5V
(resistive load ≧ 5kΩ)--- OP-2
0 to +10V(resistive load ≧ 5kΩ)--- OP-5
able to output additional 5%FS to lower/upper side
② R e so l u t io n
Linked to displayed value resolution orInternal resolution (maximum 1/10,000)③ Li n e a r i t y±0.1%FS (against displayed value)④ Temperature±0.02%FS/℃ (against Zero and Sensitivity)
Characteristics
5)． Serial data output (option-3)①Interface②Speed③Protocol④Format１１－５) General1 ) ． Measures for power
failure (backup of memory):
2)． Power supplied voltage:3 ) ． Power consumption:4 ) ． Operating Temperatureand Humidity range:5 ) ． Mounting:6 ) ． Mass:

RS-232C conformity (isolated)
2400 bps
Start-Stop Synchronous (Asynchronous) type
Data bit: 7bit, Stop bit: 2bit, Parity: EVEN, Data: ASCII

Each data is written in a non-volatile memory (EEPROM)
AC85 to 132V, 50/60Hz: standard
DC20 to 27V: option
approx. 20VA
−10～+40℃, 20～85％ R.H. (without condensation)
Panel mounting typeapprox. 1kg- 26 -

MA4-00192-R5

§１２．List of Models and Accessories
１２－１) Model
ＤＬＳ－５０２８Ａ－１－ＤＣ
Power supplied
voltage
Option

blank
DC
blank
1
2
3
5

Model name

Digital indicator DLS-5028A

１２－２) Accessories
1 ) ． Operation manual2 ) ． Unit seal
3)． Terminal base cover (attached): AC100V as standard: DC24V as option: No option: Current output (4 to 20mA): Voltage output (-5 to +5V)
: RS-232C serial interface: Voltage output (0 to +10V)

1 copy1 pc
2 pcs§１３．Dimensional drawing- 27 -

MA4-00192-R5

§１４．Table of Functions and Operations
How to set a numerical value
Pressbutton to select the digit (blinking while selected) and press
button tochange the value. Press
button to memorize it.
The left end digit serves as a guide character also as a polarity. It is impossible to set a‘−’ polarity if the numeric value is ‘0000’. In that case, set a numeric value first.
How to select a candidate
Pressbutton to select a candidate (blinking while selected). Press
memorize it.

button to

How to cancel, stop setting or selecting
Pressbutton.

M e a su r in g M o d e
ButtonMENU
ITEM
AZ
for 1 second
AZ.R
for 1 secondPT
for 1 second
ESCAPEfor 2 second

Content
Enter Function ModeNo operation
Auto Zero
Cancel Auto Zero
Preset TareNo operation
Lock / Unlock buttons
No operation

Ca l ibr a t i o n Lo c k se t t i n g
Turn power ON while pressing
Guide
Co n t e n t
display
Lo c k / U n l o c k
c a l ib r a t i o n

RemarkStatus LED[AZ] ON
Status LED[AZ] OFF
Status LED[PT] ON
Indicate

while locked

button or press
button 3 times right after powered ON
Numeric
Candidates
Defaultv a lu e /value
Ca n di da t e
Ca n di da t e: U n lo ck Ca l ibr a t io n
: Lo ck C a l ibr a t io n

Pr e se t Ta r e se t t in g
Press[PT] button for 1 second in Measuring ModeGuide
Co n t e n t
Numeric
Range of value
displayv a lu e /Ca n di da t e
Pr e se t Ta r e se t t in g
Numeric−9 99 9 t o + 99 99- 28 -

Default value

MA4-00192-R5

Fu n ct i o n M o d eComparator setting
Press MENU
button once in Measuring Mode
Guide display
Co n t e n t
Numeric
v a lu e /Ca n di da t e
Qu a n t i t a t iv e v a lu e
N u m e r i c v a lu eof comparator 1
Qu a n t i t a t iv e v a lu e
N u m e r i c v a lu eof comparator 2
Qu a n t i t a t iv e v a lu e
N u m e r i c v a lu eof comparator 3
Qu a n t i t a t iv e v a lu e
N u m e r i c v a lu eof comparator 4
Fall value ofN u m e r i c v a lu ecomparator 1
Fall value ofN u m e r i c v a lu ecomparator 2
Fall value ofN u m e r i c v a lu ecomparator 3
Fall value ofN u m e r i c v a lu ecomparator 4
Hysteresis value ofN u m e r i c v a lu ecomparator 1 to 4

Range of value/
Candidates

Default value−9 99 9 t o + 99 99+−9 99 9 t o + 99 99+−9 99 9 t o + 99 99+−9 99 9 t o + 99 99+

0 to 999
0 to 999
0 to 999
0 to 999
0 to 99

Fu n ct i o n M o d eFunction setting
Press MENU
button twice in Measuring ModeGuide
Co n t e n t
Numeric
R a n g e o f v a lu e /displayv a lu e /Ca n di da t e s
Ca n d i d a t e
Judgement of
Ca n d i d a t e
co m p a r a t o r 1: N o ju dg e m e n t:Upper limit of Net value
Judgement of
Ca n d i d a t e:Upper limit of Gross value
co m p a r a t o r 2:Lower limit of Net value
Judgement of
Ca n d i d a t e:Lower limit of Gross value
co m p a r a t o r 3
Judgement of
Ca n d i d a t e
co m p a r a t o r 4
A n a lo g o u t p u t
Ca n d i d a t e:Net value
da t a t y p e:Gross value
Ze r o s c a le o f
Numeric−9 99 9 t o 99 99
analog output
v a lu e
Se t a di sp la y v a lu e t o o u t p u t 4m A
or 0V
Fu l l sc a le o f
Numeric−9 99 9 t o 99 99
analog output
v a lu e
Se t a d is pl a y v a lu e t o o u t pu t
20m A , + 5V o r 10 V
R e s o lu t io n o f
Ca n d i d a t e: Linked to displayed value
analog output
resolution: Internal maximum resolution
U se r se le c t e d
Ca n d i d a t e:Display Hold,command of:Zero correction
external input
Sh if t t o Te st−Blinked byand3 times to shift
Mode
Test Mode- 29 -

Default
value−

MA4-00192-R5

Fu n ct i o n M o d e
Ca l ibr a t i o n se t t in g
Press MENU
button 3 times in Measuring ModeGuide
Co n t e n t
Numeric
Range of value/
displayv a lu e /Candidates
Ca n di da t e
Ze r o c a li b r a t io n−
Blinked by
and
press
to calibrate zeroSp a n c a li b r a t io n
Numeric
Di sp la y v a lu e −9 99 9 t o 9 99 9v a lu ePress
to calibrate span
M in i m u m s c a le
Ca n di da t e 1,2,5 or 10
div is io n
St r e n g t h o f Dig it a l
Ca n di da t e 1(weak), 2, 3, 4, 5, 6, 7, 8, 9 or
Fil t e r10(strong)
Range to stop moving
Ca n di da t e o FF, 0. 5 t o 1 0. 0 s tep 0.5
average
Number of times of
Ca n di da t e 1, 2, 4, 8, 16, 24 or 32
Moving average
Range of zero tracking Ca n di da t e o FF, 0. 5 t o 1 0. 0 s t e p 0. 5
to be effective
Working time of zero
Ca n di da t e 0.2 or 0.5 to 5.0 step 0.5
tracking
De c im a l p o in t
Ca n di da t e(0),(0.0),(0.00) orpo sit io n(0.000)
Polarity of zero
Ca n di da t e: plus‘+’equivalent input value: minus ’－’
Zero equivalent input
Numeric
0.0000 to 9.9999
value
v a lu e
Display value of span
Numeric−9 99 9 t o + 99 9 9equivalent input
v a lu e
Polarity of span
Ca n di da t e: plus‘+’equivalent input value: minus ’－’Span equivalent input
Numeric
0.0000 to 9.9999
value
v a lu e- 30 -

Default
value−

MA4-00192-R5

Te s t M o deTurn power ON while pressing
button or press
button 3 times within 3 seconds right after
powered ON. Also it is possible to enter in Function Mode.
Proceed to the next by[MENU] button and return to the previous by[ITEM] button.
Guide display
Test item
Contents
Model Name
Press
button 3 times to return to Measuring Mode.
Program
Display program version
VersionPress
button 3 times to return to Measuring Mode.
Check LEDs
The order to check LEDs as follows.
1. All LEDs are turned OFF
2. Each segment of all 7 segment LEDs and status LEDs
are turned ON in order
3. All decimal point are turned ON
4. All segment of each 7 segment LEDs are turned ONfrom left side to right side
5. All status LEDs are turned ON
6. All LEDs are turned ON and back to 1.
Check button
Display allocated number of buttons[MENU ],[ITEM ],[AZ ],[AZ.R ],
[PT ],[ ],[LOCK ],
[ ]Proceed to the next item to press[MENU] twice.
Return to the previous item to press[ITEM] twice.
Check external
Display Relay number and output to specified Relay
output-Relay 4 is MAKE/BREAK when pressing
button-Relay 3 is MAKE/BREAK when pressing
button-Relay 2 is MAKE/BREAK when pressing
button-Relay 1 is MAKE/BREAK when pressing
buttonCheck external
Display status of external input.
input-External input (AZ) is ON.
-External input (AZ.R) is ON.
-External input (CMD) is ON.
Adjust analog
Pressbutton to adjust 4mA / 0V
output±xx: Press
to increase/decrease 4mA (OP-1)±xx: Press
to increase/decrease 0V (OP-2,5)
Press
button to adjust 20mA / 5V/ 10V±xx: Press
to increase/decrease 20mA (OP-1)±xx: Press
to increase/decrease 5V (OP-2)±xx: Press
to increase/decrease 10V (OP-5)
Pressbutton to adjust -5V±xx: Press
to increase/decrease -5V (OP-2)
Press
button to memorize
Check analog
Select analog output 11 steps.
outputPress
button to increase/decrease analog output.
This function helps to confirm the linearity of analog
output.
Check output
Display output voltage (mV/V) from Load Cell.
(Indicate forvoltage from
Status LEDs (SP1 to SP4) are lighted up as minus.
one second)
Load Cell
The value is blinking when A/D over.
Press[AZ] button to set the value to be zero.
Press[AZ.R] button to restore the value.
Zero correction
Operate zero correction even if loaded on Load Cell.
Press
button to display the measured value.
Pressbutton to increase/decrease zero point.
Pressbutton to memorize the zero correction.
/is indicated only when OP-1, OP-2 or OP-5 is installed- 31 -

MA4-00192-R5

§１５．Functional Block Diagram:External command input
Select either Zero or HOLD

Zero

A/D

Digital Filter

CAL±3.3mV/V

Numb er of ti mes ofmovi ng av er age : 1 to 32(Zero & Sensitivity adjustment)

L/C

A/D Ref.

DF=5, Av=4
at the time of shi pment

Actual load or Equivalent input

GROSS

AZ
AZ.R
L/C power (5V)350Ω 4 points

Zerocorrection

AZ

Preset Tare

(Tare subtraction )subtraction

NET

Minimum scale division( 1,2,5,10 )

GROSS

HOLD

NET
Display Hold

LED display

Current Loop

4 comparators

D/A

Serial output(C/L) serial

Quantitative value

OP1: 4 to 20mA

OP3: RS-232C

outputFall value

OP2:-5 to +5V

Isolated output

Hysteresis value

OP5: 0 to 10V

Judge upper/lower limit

Isolated output(±9999)For connecting TOYO

1 2 3 4

Analog output

peripheral unit

Contact output(Either one of two)

- 32 -

Isolated output

Serial output

MA4-00192-R5