SMALL DIGITAL INDICATOR
MODEL

ＴＩ－７０２OPERATION MANUALDIGITAL INDICATOR

ZERO

CLEAR

TI-702TOYO SOKKI CO.,LTD.
964-24 Nippa-cho Kohoku-ku, Yokohama 223-0057 Japan
TEL +81-45-540-8353
FAX +81-45-544-8354

MA4-00285-R1(2021/2)

－－ Table of contents －－Page§１． SUMMARY ..................................................................................................... 3§２． INSTALLATION AND THE CONNECTION METHOD OF THE UNIT ................................ 4２－１) Installation environment of this unit .............................................................. 4２－２) To obtain stable measurement ..................................................................... 4§３． APPEARANCE AND NAME OF EACH PART ............................................................. 5§４． FUNCTION & OPERATION ................................................................................. 6４－１) Measuring Mode ......................................................................................... 6４－２) Function Mode ........................................................................................... 8４－３) Test Mode ................................................................................................ 8§５． ADJUSTMENT OF ANALOG OUTPUT .................................................................... 9５－１) Method of adjusting current output 4～20mA .................................................. 9５－２) Method of adjusting voltage output 0～±5V .................................................. 10５－３) Method of adjusting voltage output 0～10V ................................................... 11§６． CALIBRATION .............................................................................................. 12６－１) Cancel Calibration Lock ............................................................................. 12６－２) Actual Load Calibration ............................................................................. 12６－３) Equivalent Input Calibration (Not available EXC=2.5V) .................................... 12§７． FUNCTION MODE .......................................................................................... 13７－１) How to operate........................................................................................ 13７－２) Function Table ........................................................................................ 13§８． TEST MODE ................................................................................................. 17８－１) Operation method .................................................................................... 17８－２) Test item ............................................................................................... 17§９． TROUBLESHOOTING ...................................................................................... 18９－１) Basic check point ..................................................................................... 18９－２) Precautions at the time of calibration. .......................................................... 18９－３) Countermeasure when abnormal display is indicated ...................................... 18９－４) Judgement whether this unit has malfunction ................................................ 18９－５) Checking Sensor (Load Cell)....................................................................... 19§１０． SPECIFICATIONS ....................................................................................... 20１０－１) A/D convert part ................................................................................... 20１０－２) Zero point and Sensitivity part ................................................................. 20１０－３) Display part ......................................................................................... 20１０－４) I/O part ............................................................................................... 20１０－５) Analog output ....................................................................................... 21１０－６) General ............................................................................................... 21§１１． LIST OF MODELS AND ACCESSORIES ............................................................. 22１１－１) Model .................................................................................................. 22１１－２) Attached accessory ................................................................................ 22１１－３) Accessory sold separately ....................................................................... 22§１２． TERMINAL LAYOUT..................................................................................... 23§１３． DIMENSIONAL DRAWING ............................................................................. 24§１４． FUNCTION BLOCK DIAGRAM ........................................................................ 24※This operation manual conforms to program version 1.00 and later.
This document is translated from MA4-00281-R0 (Japanese)-2-

MA4-00285-R1

§１．Summary
This small digital indicator has a signal input channel from a distortion gauge type transducer
and is suitable for controlling platform scale or hopper , etc.
This indicator has various functions such as Tare subtraction, Comparator output, Hold, andZero tracking, etc. They are easily operated by key buttons.
There are two contact output and three external input to control the connected equipment.
Also this unit is equipped with analog output of 4 to 20mA current output, ±5V voltage output
and 0 to 10V voltage output as standard and can be selected one of them at Function Mode by
key operation.
Power supplied voltage is DC24V.

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MA4-00285-R1

§２．Installation and the connection method of the unit２－１) Installation environment of this unit
1)

Operation temperature range of this unit is −10 to +40℃.
Please install this unit in a place not exposed to direct sunlight and condensation.

2)

The power supply is DC24V.
Recommend to use a constant-voltage transformer if power supply is not stable.

3)

This unit is designed to fix by a panel-mount. Please make use of the attached metal
fittings to fix it on.

4)

Please confirm the cable specification before wiring this unit.

5)

A shield line of each cable should be grounded to either one of this unit or eachconnected equipment.

２－２) To obtain stable measurement
When a sensor of strain gauge (i.e., Load Cell, Pressure gauge) is amplified by an amplifier oris connected to an indicator, the value may fluctuate or may not be stable.
Control Unit
(PLC, etc.)

SensorIndicator, Amplifier(TI-702, etc.)( Fig. 1 )This is because of difference of an electric potential between a sensor part and an amplifier /indicator part. It is induced from electric potential of commercial power (AC100V/AC200V).

( Fig. 2 )The most effective way to improve stability is to use a cable to connect an Earth terminal of anamplifier / indicator to a case or chassis of sensor, like Fig 2.
If it is difficult to find an Earth terminal of sensor side, loose a bolt of metal case of sensor andconnect the cable. Please make the electric potential be same as possible.
In case that a sensor and amplifier / indicator have installed apart separately, stability improves
when an Earth terminal of indicator / amplifier and a metal case of sensor connect to the nearest
earth of each. But if they are apart far from each other, it may not bring a good result due todifferent electric potential of the earth. However, in such a case, stability improves if connecting
a cable as Fig 2.

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MA4-00285-R1

§３．Appearance and name of each part
Appearance of the unitⓐMeasured value①
DIGITAL INDICATOR③－１２３４．５Ｅ
ＺＣ

Ｈ

ｋｇ
ZERO

ⓑⓒⓓⓔ

CLEAR

④

ⓕ

②

TI-702① LCD with back light
In Measuring Mode, the measured value is at u pper side and the status of operation is at
lower side. In Function Mode, guide of function and setting value/candidate are displayed.
Back light will be turned OFF after no key operation is made for a period of time, which is set
in Function Mode. It turns ON again when any key is pushed.
Place

ⓐ
ⓑ
ⓒ
ⓓ
ⓔ
ⓕ

StatusContent

E

Blinking when abnormal analog output

Z

Tare subtraction is in operation

G
Ｇ

Indicate Gross value

C

Calibration Locked

Indicate Gross value while Tare subtraction is in operation
Key Locked

H

Hold is in operation / Blinking while pausing Hold

(unit)

Unit which is selected at [Unit] in Function Mode

② Key switches
Key
ZERO
CLEAR
▲ /(Pause)▼ /(Hold)◀
▶
ENT

Measuring Mode
Perform Tare subtraction bypushing for 1 second
Cancel Tare subtraction bypushing for 1 second
Start/Stop data update while
Peak/Bottom Hold is in operation
Start/Stop Hold operation−−
Enter Function Mode by pushingfor 1 second

Function Mode−
Cancel the setting or Leave Function
Mode
Increase the value of the selected digit
Select a candidate upward
Decrease the value of the selected digit
Select a candidate downward
Select the digit toward left
Select the digit toward right
Memorize the setting③ Terminals for power line and rely contact output④ Terminals for Load Cell (sensor) and external input-5-

MA4-00285-R1

§４．Function & Operation
４－１) Measuring Mode
1) LCD back light
Back light will be turned OFF after a period of time of no key operation. It turns ON again
when any key is pushed during LCD back light OFF. Time period to turn back light ON is
selected at [LCDlight] in Function Mode.
Deteriorate LCD faster when keeping back light ON.

2) Over Load
This is a function of alert for over-loading of Load Cell. The measured value is blinking to
inform that it exceeds the rated capacity of Load Cell set at [ Capacity] in Function Mode. Tare
subtraction cannot be done during over-loaded.
3) Zero point correction ( Zero point correction of Gross value )External command input can correct and clear zero point of Gross value, which is set at[IN□Sel/GrossZr] or [IN□Sel/GZeroClr] in Function Mode. ( □ is 1～3 )The value of zero point correction is memorized in a non-volatile memory and cannot bedisappeared even after powered OFF.
Zero correction cannot be done during over-loaded.
4) Tare Subtraction
When pushing ZERO key for 1 second, perform Tare subtraction and [Z] is indicated on LCD.
Cancel Tare subtraction when pushing CLEAR key for 1 second.
Value of Tare subtraction is memorized in a non -volatile memory and cannot be disappeared
even after powered OFF.
Tare subtraction cannot be done during over-loaded.
External command input can set or cancel of Tare subtraction after selecting [ IN□Sel / ZERO]or [IN□Sel / CLEAR] in Function Mode. ( □ is 1～3 )5) Preset Tare Subtraction
This function is used for an object that have a known container weight (Tare value) beforehand.
Select [Tare Sel / Pre-Tare] in Function Mode and set Tare value at [Pre-Tare] in Function Mode.
Setting range is −99999 to +99999.
When the value other than 0 is set, Tare value is subtracted from the measured value andkeep it subtracted afterward.
※ Please choose one either Preset Tare Subtraction or Net Calculation
6) Net Calculation
This function is used for an object that have a known content amount (Net value) beforehand.
Select [Tare Sel / Pre-NET] in Function Mode and set a content amount at [Pre-Tare] in Function
Mode. Setting range is −99999 to +99999.
Content amount appears on LCD when ZERO key is pushed for 1 second at Measuring Mode.
※ Please choose one either Preset Tare Subtraction or Net Calculation
7) Gross / Net value to display[G] is indicated on LCD and display Gross value while external command input assigned at [IN□ Sel / Gross] of Function Mode is in electrical short state. Display Net value while it is inelectrical open state. (□ is 1～3)Black and white reversed [Ｇ ] will be indicated while Tare subtraction is in operation.

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MA4-00285-R1

8) Hold
Select a candidate at [Hold] in Function Mode as follows[Sample] : Fix displayed value to the number when start Hold operation[Peak]: Indicate maximum displayed value during Hold operation[Bottom] : Indicate minimum displayed value during Hold operation
Press ▼ key to start / stop Hold operation and [H] is indicated on LCD during Hold operation.
Press ▲ key to pause the update data during Peak/Bottom Hold operation and [ H] blinks ON
and OFF. This pause function helps to confirm the value temporarily before the display value
updated higher or lower.
External command input can operate Hold. Select [IN□Sel / Hold] or [IN□Sel / Ps Hold] in
Function Mode and operate Hold or pause Hold during external command input is in electricalshort state. Stop Hold operation during it is in e lectrical open state. (□ is 1～3)
9) Comparator output
Two comparators output upper / lower limit judgement. Comparator judgement condition isset at [Cmp□ Sel] in Function Mode. (□ is 1 or 2)a) Comparator Upper Limit judgement
Output ON
Output OFF: Measured value ≧ Quantitative value: Measured value ＜ (Quantitative value － Hysteresis value)
Output ON
OFF (－)

Quantitative value( + )Hysteresis valueb) Comparator Lower Limit judgement
Output ON
Output OFF: Measured value ≦ Quantitative value: Measured value ＞ (Quantitative value + Hysteresis value)
Output ON
OFF (－)

Quantitative value( + )Hysteresis valuec) Delay time
External output can be delayed after comparator judge upper / lower limit.
Set [Dly□] in Function Mode. (□ is 1 or 2)
Delay Time = Set value x approx. 0.01sec.
i.e.) 100 (set value) x 0.01sec. ≒ 1.0sec.
Measured value

Quantitative
value

External output ON

Without delay

OFF
External output ON
With delay

OFF
Delay

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MA4-00285-R1

d) Abnormal Detection
Alert the operating conditions of this unit.
It turns ON when operating normally and turns OFF in case of abnormal condition suchas power supply failure or over loading.
e) Relay Output Circuit Diagram
TI−702④(OUT1)⑥(OUT2)○⑤(OUT1)⑦(OUT2)10) External input
Three external command input are equipped.
Operation allocated each input is selected at [IN□ Sel] of Function Mode. (□ is 1～3)

+5V
1 kΩ
⑮⑯⑰ (+IN1～3)
TI−702⑱ (-COM)○(External command input circuit)11) Key Lock
This function is to prevent wrong operation.
Set key Lock / Unlock in [Key Lock] of Function Mode.
[ ] is indicated on LCD during key locked.
Displays [Lock] when pushing any key except ENT key in key locked status but accepts
external command input.
12) Cal Lock
This function prevents to change the span calibrated value from wrong operation.
Span calibration is prohibited in Cal Lock status but zero calibration can be implemented.
[C] is indicated on LCD during Cal Lock.
Set calibration locked / unlock in [Cal Lock] of Function Mode.
４－２) Function Mode
Various functions are implemented in Function Mode.
Push ENT key for 1 second to enter Function Mode.
Please refer to section 7) Function Mode.
４－３) Test Mode
This is a function to confirm the operation of this unit. The response of indication and external
input / output signal in Test Mode is different from Measuring Mode. Please take measures forconnected external equipment to keep it from abnormality.
To enter Test Mode, push ENT key while turning power ON or push ◀ / ▶ key let [ON] blink andpush ENT key 3 times at [Test] in the Function Mode.

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MA4-00285-R1

§５．Adjustment of Analog Output
After A/D converts the input signal from Load Cell to digital data, D/A converts it to analog
output again. By a scaling function, it can link a display value to 4mA,−5V, 0V of minimum
analog output, and can link a display value to 20mA, 5V , 10V of maximum analog output. In
addition, it can fine-tune at 4mA, 20mA, 0V, ±5V, +10V in order to regulate level error against
input of instruments connected to this unit.
By using Test Mode, it can output 11 steps between 4 ～20mA, −5～0～+5V or 0～10V.
５－１) Method of adjusting current output 4～20mA
Guide display
Content
Operation
1
AoutType
Select output
Proceed to [AoutType] in Function Mode.
4−20mA
type
2
Select [4−20mA] by using ◀ ▶ key.
3
Memorize by pushing ENT key.
4
Aout ZS
Scale to 4mA
Proceed to [Aout ZS] in Function Mode.
0
output5
Set display value to link 4mA output by using◀ ▶ ▲ ▼ key.
6
Memorize by pushing ENT key
7
Aout FS
Scale to 20mA
Proceed to [Aout FS] in Function Mode
10000
output8
Set display value to link 20mA output by using◀ ▶ ▲ ▼ key.
9
Memorize by pushing ENT key.
10
Aout Sel
Select output
Proceed to [Aout Sel] in Function Mode.
Net
data type11
Select data type by using ◀ ▶ key.
12

Memorize by pushing ENT key.
Fine adjustment of current output

13
14

AoutZAdj
0

Fine adjustmentof 4mA output

15
16
17

AoutFAdj
0

Fine adjustmentof 20mA output

18

Proceed to [AoutZAdj] in Function Mode.
Fine tune by using ◀ ▶ key.
Tuning will be fast-forward or fast-rewindwhen the key pressed longer.
Memorize by pushing ENT key.
Proceed to [AoutFAdj] in Function Mode.
Fine tune by using ◀ ▶ key.
Tuning will be fast-forward or fast-rewindwhen the key pressed longer.
Memorize by pushing ENT key.

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MA4-00285-R1

５－２) Method of adjusting voltage output 0～±5V
Guide display
Content
Operation
1
AoutType
Select output
Proceed to [AoutType] in Function Mode.
±5V
type
2
Select [±5V] by using ◀ ▶ key.
3
Memorize by pushing ENT key.
4
Aout ZS
Scale to 0V
Proceed to [Aout ZS] in Function Mode.
0
output5
Set display value to link 0V output by using◀ ▶ ▲ ▼ key.
6
Memorize by pushing ENT key.
7
Aout FS
Scale to +5V
Proceed to [Aout FS] in Function Mode.
10000
output8
Set display value to link +5V output by using◀ ▶ ▲ ▼ key.
9
Memorize by pushing ENT key.
10
Aout-FS
Scale to −5VProceed to [Aout−FS] in Function Mode.
−10000output11
Set display value to link −5V output by using◀ ▶ ▲ ▼ key.
12
Memorize by pushing ENT key.
13
14
15

Aout SelNet

Select output
data type

Proceed to [Aout Sel] in Function Mode.
Select data type by using ◀ ▶ key.
Memorize by pushing ENT key.

Fine adjustment of voltage output
16
17

AoutZAdj
0

Fine adjustmentof 4mA output

18
19
20

AoutFAdj
0

Fine adjustmentof +5V output

21
22
23

Aout-Adj
0

Fine adjustmentof −5V output

24

Proceed to [AoutZAdj] in Function Mode.
Fine tune by using ◀ ▶ key.
Tuning will be fast-forward or fast-rewindwhen the key pressed longer.
Memorize by pushing ENT key.
Proceed to [AoutFAdj] in Function Mode.
Fine tune by using ◀ ▶ key.
Tuning will be fast-forward or fast-rewindwhen the key pressed longer.
Memorize by pushing ENT key.
Proceed to [Aout−Adj] in Function Mode.
Fine tune by using ◀ ▶ key.
Tuning will be fast-forward or fast-rewindwhen the key pressed longer.
Memorize by pushing ENT key.

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MA4-00285-R1

５－３) Method of adjusting voltage output 0～10V
Guide display
Content
Operation
1
AoutType
Select output
Proceed to [AoutType] in Function Mode.
0−10V
type
2
Select [0−10V] using ◀ ▶ key.
3
Memorize by pushing ENT key.
4
Aout ZS
Scale to 0V
Proceed to [Aout ZS] in Function Mode.
0
output5
Set display value to link 0V output by using◀ ▶ ▲ ▼ key.
6
Memorize by pushing ENT key.
7
Aout FS
Scale to 10V
Proceed to [Aout FS] in Function Mode.
10000
output8
Set display value to link 10V output by using◀ ▶ ▲ ▼ key.
9
Memorize by pushing ENT key.
10
Aout Sel
Select output
Proceed to [Aout Sel] in Function Mode.
Net
data
type
11
Select data type by using ◀ ▶ key.
12

Memorize by pushing ENT key.
Fine adjustment of voltage output

13
14

AoutZAdj
0

Fine adjustmentof 0V output

15
16
17

AoutFAdj
0

Fine adjustmentof 10V output

18

Proceed to [AoutZAdj] in Function Mode
Fine tune by using ◀ ▶ key.
Tuning will be fast-forward or fast-rewindwhen the key pressed longer.
Memorize by pushing ENT key
Proceed to [AoutFAdj] in Function Mode
Fine tune by using ◀ ▶ key.
Tuning will be fast-forward or fast-rewindwhen the key pressed longer.
Memorize by pushing ENT key- 11 -

MA4-00285-R1

§６．Calibration
As for the calibration method, there are two kinds of calibration, as [Equivalent Input
Calibration] which input the equivalent output voltage of Load Cell by key operation, and as[Actual Load Calibration] which use a reference weight as an actual load. Calibration can bedone by either method but it will be operated by the last calibration. Recommend to calibrate byan actual load as much as possible.
６－１) Cancel Calibration Lock
There is a calibration lock function to keep the calibrated value secure from wrong operation.
[C] is indicated on LCD during calibration locked. But zero point calibration can be done.
Please cancel a calibration locked status prior to operate calibration.
Select [Unlock] at [Cal Lock] in Function Mode.
６－２) Actual Load Calibration
Guide display
Content
1
Cal Lock
Cancel calibration lock
Unlock2
Capacity
Rated capacity
99999
of Load Cell
3
4
Min.Div
Minimum scale
1
5
6
D.Point
Decimal point position
0
7
8
CAL Zero
Zero calibration
0
9
10
11
CAL Span
Span calibration
10000
12
13

Operation
Cancel calibration lock if locked.
Set numeric value by using ◀ ▶ ▲ ▼key. Set 99999 if not needed.
Memorize by pushing ENT key.
Select minimum scale by using ◀ ▶ key.
Memorize by pushing ENT key.
Select decimal point position by using◀ ▶ key.
Memorize by pushing ENT key.
Put nothing on the Load Cell.
Let [0] blink by pressing ▶ key.
Memorize by pushing ENT key.
Put a reference weight on Load Cell.
※A weight should be as heavy as possible
within the feasible range of Load Cell.
Set a weight value by using ◀ ▶ ▲ ▼key.
Memorize by pushing ENT key.

６－３) Equivalent Input Calibration (Not available EXC=2.5V)
Guide display
Content
Operation
1
Cal Lock
Cancel calibration lock Cancel calibration lock if locked.
Unlock2
Capacity
Rated capacity
Set numeric value by using ◀ ▶ ▲ ▼99999
of Load Cell
key. Set 99999 if not needed.
3
Memorize by pushing ENT key.
4
Min.Div
Minimum scale
Select minimum scale by using ◀ ▶ key.
1
5
Memorize by pushing ENT key.
6
D.Point
Decimal point position Select decimal point position by using0◀ ▶ key.
7
Memorize by pushing ENT key.
8
E.Zr.Adj
Equivalent value of
Set zero point value (mV/V) of Load Cell by
0.0000zero point of Load Cell using ◀ ▶ ▲ ▼ key.
9
Memorize by pushing ENT key.
10
E.Span
Display value of span
Set span display value of Load Cell by
10000
amountusing ◀ ▶ ▲ ▼ key.
11
Memorize by pushing ENT key.
12
E.Sp.Adj
Equivalent value of
Set span output value (mV/V) of Load Cell
1.0000span of Load Cellby using ◀ ▶ ▲ ▼ key.
13
Memorize by pushing ENT key.

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MA4-00285-R1

§７．Function Mode
７－１) How to operate① Enter Function Mode by pushing ENT key for 1 second.
② Select an item by using ▲ or ▼ key.
③ Select the digit or candidate by using ◀ or ▶ key.
④ When setting a numerical value, increase /decrease the value by using ▲ or ▼ key.
⑤ To complete the setting, memorize by pushing ENT key.
⑥ To cancel the setting or leave Function Mode, push CLEAR key.
⑦ Back to Measuring Mode automatically without key operation for 3 minutes.
７－２) Function Table
Guide display
Content

1

Pre-Tare2

Tare Sel

3

Set P1

4

Set P2

5

Dly1

6

Dly2

7

Hys1

8

Hys2

9

Cmp1 Sel

Numerical value of
Pre-Tare/Pre-Net
SelectPre-Tare/Pre-Net
operation
Quantitative valueof comparator 1
Quantitative valueof comparator 2
Delay output ofcomparator 1
Delay output ofcomparator 2
Hysteresis ofcomparator 1
Hysteresis ofcomparator 2
Select judgementof comparator 1

Settingvalue /
candidate
0 to±99999
Pre-TareOperation

Pre-Net0 to±999990 to±999990 to 999

NET Calculation
Set numeric value

0 to 999

Set numeric value

0 to 99999

Set numeric value

0 to 99999

Set numeric value

Set numeric value(0 at the time of shipment)

Preset Tare Subtraction(at the time of shipment)(99999 at the time of shipment)

Set numeric value(99999 at the time of shipment)

Set numeric value(0 at the time of shipment)(0 at the time of shipment)(0 at the time of shipment)(0 at the time of shipment)

OFF
Up-NetNo judgement. No output.
Upper limit of Net value

Dn-NetUp-Gross
Dn-Gross
Up-Disp
Dn-Disp
Warning
OFF
Up-NetLower limit of Net value
Upper limit of Gross value
Lower limit of Gross value
Upper limit of Display value
Lower limit of Display value
ON during normal operation
No judgement. No output.
Upper limit of Net value

Dn-NetUp-Gross
Dn-Gross
Up-Disp
Dn-Disp
Warning
Make

Lower limit of Net value
Upper limit of Gross value
Lower limit of Gross value
Upper limit of Display value
Lower limit of Display value
ON during normal operation
ON when relay is excited

Break
Make

OFF when relay is excited
ON when relay is excited

Break
Non
ZERO

OFF when relay is excited
No operation
Tare subtraction(at the time of shipment)

10

Cmp2 Sel

Select judgementof comparator 2(at the time of shipment)

11

12

13

Relay1

Relay2IN1 SelSelect operation ofrelay 1
Select operation ofrelay 2
Select operation of
external command(at the time of shipment)(at the time of shipment)- 13 -

MA4-00285-R1

input 1

14

IN2 SelSelect operation of
external command
input 2

(at the time of shipment)

CLEAR
Gross Zr
GZeroClr
Gross
Hold
Ps Hold
Non
ZERO
CLEAR

Clear Tare subtraction
Zero correction of Gross value
Clear zero correction of Gross value
Display Gross value (at low level)
Hold operation (at low level)
Pause Hold operation (at low level)
No operation
Tare subtraction
Clear Tare subtraction

Gross Zr
GZeroClr
Gross
Hold
Ps Hold
Non
ZERO
CLEAR
Gross Zr

Zero correction of Gross value
Clear zero correction of Gross value
Display Gross value (at low level)
Hold operation (at low level)
Pause Hold operation (at low level)
No operation
Tare subtraction
Clear Tare subtraction
Zero correction of Gross value(at the time of shipment)

15

IN3 SelSelect operation of
external command
input 3

(at the time of shipment)

16

AoutType

Select analog
output type

GZeroClr
Gross
Hold
Ps Hold
Non

Clear zero correction of Gross value
Display Gross value (at low level)
Hold operation (at low level)
Pause Hold operation (at low level)
No analog output

4-20mA±5V
0-10V
0～±99999

Current output 4～20mA
Voltage output 0～±5V
Voltage output 0～10V
Set display value to link 4mA or 0V.
Set numeric value(at the time of shipment)

17

Aout ZS

Scale to output
4mA or 0V

18

Aout FS

Scale to output
20mA, +5V or 10V

0～±99999

Set display value to link 20mA, +5V
or 10V. Set numeric value

19

Aout-FS

Scale tooutput −5V

0～±99999

Set display value to link −5V.
Set numeric value

20

Aout Sel

Analog output
data type21

AoutZAdj

Net value(at the time of shipment)
Gross value
Display value (link to Hold operation)
Select numeric value

22

AoutFAdj

Fine adjustment of
4mA or 0V output
Fine adjustment of
20mA, +5V or 10V
outputFine adjustment of−5V output
Hold operation

Net
Gross
Disp
0 ～±999
0 ～±999

Select numeric value(0 at the time of shipment)(10000 at the time of shipment)(-10000 at the time of shipment)

23

Aout−Adj

24

Hold(0 at the time of shipment)(0 at the time of shipment)

0 ～±999

Select numeric value

OFF

No Hold operation

SamplePeak
Bottom1min.

Sampling Hold operation
Peak Hold operation
Bottom Hold operation
Turn on 1 minute

30min.
60min.

Turn on 30 minutes
Turn on 60 minutes(0 at the time of shipment)(at the time of shipment)

25

LCDlight

Time period toturn on LCD
backlight(at the time of shipment)- 14 -

MA4-00285-R1

26

Disp Cyc

Renew period of
displaying

Always5
10Turn on all the time
5 times per second
10 times per second(at the time of shipment)

27

28

Strain M

DF cond

Display input
voltage from Load
Cell
Condition ofmoving average

29

D.Filter

Number of timesof moving average

30

ZT cond

Condition of zero
tracking

31

ZT timeWorking time ofzero tracking

32

Capacity

33

Min.Div

Rated capacity of
Load Cell
Minimum scale

20OFF

20 times per second
Measuring Mode

ON
OFF

Display input voltage (mV/V)
Normal moving average

5
10
20
50
100
500
1
5
10
20
50
100
200
300
OFF

Moving average range of ±5 scaleditto ±10 scaleditto ±20 scaleditto ±50 scaleditto ±100 scaleditto ±500 scale
1 time (No average)
5 times
10 times
20 times(at the time of shipment)
50 times
100 times
200 times
300 times
Zero tracking ineffective

1
2
3
4
5
10
0.1
0.5
1.0
2.0
3.0
0 to 99999

Within ±1 scale
Within ±2 scale
Within ±3 scale
Within ±4 scale
Within ±5 scale
Within ±10 scale
0.1 second
0.5 second
1.0 second(at the time of shipment)
2.0 seconds
3.0 seconds
Set numeric value

1

Minimum scale 1(at the time of shipment)(at the time of shipment)(at the time of shipment)(99999 at the time of shipment)(at the time of shipment)

34

35

D.Point

Unit

Decimal point
position

Unit to display

2
5
10
20
50
100
0

Minimum scale 2
Minimum scale 5
Minimum scale 10
Minimum scale 20
Minimum scale 50
Minimum scale 100
No decimal point

0.0
0.00
0.000
0.0000(blank)g
kgtN

1 digit after decimal point
2 digit after decimal point
3 digit after decimal point
4 digit after decimal point
Do not display unit
Gram
Kilogram(at the time of shipment)
Ton
Newton(at the time of shipment)- 15 -

MA4-00285-R1

36

Cal Zero37

Cal Span

38

E.Zr.Adj

39

E.Span40

E.Sp.Adj

41

Cal Lock

Zero actual load
calibration
Span actual load
calibration
Equivalent Zerooutput of Load Cell
Display value ofspan amount
Equivalent Span
output of Load Cell
Calibration Lock /Unlock42

Key Lock

Key Lock / Unlock

43

Test

Shift to Test Mode

kN
N・m
kN・m
Pa
kPa
MPa
gf
kgf
tf
mm
%
mV/V
με
0

Kilo newton
Newton meter
Kilo newton meter
Pascal
Kilo pascal
Mega pascal
Gram force
Kilogram force
Ton force
Millimeter
Percentage
Millivolt per volt
Micro strain
Fixed value ‘0’±1 to±999990 to±2.8000±1 to±99999±0.0001 to±3.0000
UnlockSet numeric value(10000 at the time of shipment)

Set numeric value (mV/V)(0.0000 at the time of shipment)

Set numeric value(10000 at the time of shipment)

Set numeric value (mV/V)(1.0000 at the time of shipment)

Span calibration enabled(at the time of shipment)

Lock
UnlockLock
OFFSpan calibration disabled
Key unlocked (at the time of shipment)
Key locked
Do not shift to Test Mode

ON

Push ▶ key to let [ON] blink andpush ENT key 3 times(at the time of shipment)- 16 -

MA4-00285-R1

§８．Test Mode
※The response of external I/O signal and indication of display is different during Test Mode.
Please take measures to connected external equipment to keep it from abnormality. Test
Mode confirms conditions of this unit by manual operation.
８－１)

Operation method

1) To enter Test Mode, push ENT key while turning power ON or push ◀ ▶ key to let [ON]blink and push ENT key 3 times at [Test] in Function Mode.
2) To leave Test Mode, turn power OFF or push ▶ key 3 times while displaying Model Nameor Program Version in Test Mode.
3) Push ▲ key to proceed to the next item. Push ▼ key to return to the previous item.
８－２) Test item
Guide display
1
TEST
2
TI-702
R2
3
P-x.xxItem
Test Mode
Model Name

Description
Proceed to [2 Model Name] after 2 seconds
Push ▶ key 3 times to leave Test Mode▲ to the next item, ▼ to the previous item
Push ▶ key 3 times to leave Test Mode

Program Version▲ to the next item, ▼ to the previous item
4

S/N

Serial Number▲ to the next item, ▼ to the previous item
Graphic pattern varies every second
Turn LCD back light ON / OFF by ZERO key▲ to the next item, ▼ to the previous item
▲ =1, ZERO =2, ◀ =3, ENT =4, ▶ =5,
CLEAR =6, ▼ =7
▲ to the next item, ▼ to the previous item
00 : No output
01 : Comparator1 output ON / OFF by ▶ key
20 : Comparator2 output ON / OFF by ◀ key▲ to the next item, ▼ to the previous item

xxxxx
5

▊▊▊▊▊▊▊▊▊▊▊▊▊▊▊▊

Check LCD

6

Key

Check keys
0

7

8

9

00

Check comparator
output000

Check external
command input

Cmp Out

Ext InCheck current output

I out
4.0mA

10

±5V out
0.0V

Check voltage output
when ±5V selected

10V out
0.0V

Check voltage output
when 0−10V selectedmV/V
x.xxxxCheck input voltage
from Load Cell

000 : No external command input
001 : External command input 1 is ON
020 : External command input 2 is ON
300 : External command input 3 is ON▲ to the next item, ▼ to the previous item
Output 11 steps by using ◀ ▶ key
ZERO : 4mA, CLEAR : 20mA
▲ to the next item, ▼ to the previous item
Output 11 steps by using ◀ ▶ key
ZERO : −5V, ENT : 0V, CLEAR : 5V
▲ to the next item, ▼ to the previous item
Output 11 steps by using ◀ ▶ key
ZERO : 0V,
CLEAR : 10V▲ to the next item, ▼ to the previous itemZERO : Zero,
CLEAR : Clear zero▲ to the next item, ▼ to the previous item

- 17 -

MA4-00285-R1

§９．Troubleshooting
If this unit does not work properly, please take the following measures . If the trouble still cannot
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 a sensor connected to this unit shouldbe also informed.
９－１) Basic check point
1) Please check if using a correct power supply. This unit is supplied voltage DC+24V.
2) Please check that wires are connected to the terminal properly and firmly.
９－２) 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 point calibration, Load Cell output with no load should be in the range of−2.8～+2.8mV/V. Please contact 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.
・In case of a sensor output being higher.
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 rating output of the sensor is morethan 3.3mV/V.
・In case of input level of span calibration being lower.
This unit cannot perform span calibration when variation amount of output of Load C ell is
lower than value set as span at [Cal Span] in Function Mode. Increase minimum scale at[Min.Div] in Function Mode to make resolution rougher or use an appropriate Load Cell.
3) Fluctuation of indication
・In case of span amount against resolution being not enough.
The input sensitivity of this unit is 0.25μV/digit and indication resolution is 1/20,000 at
1.0mV/V input. If the resolution is more than this, fluctuation of indication becomesbigger. In this case, please increase minimum scale until not to be noticeable offluctuation.
９－３) Countermeasure when abnormal display is indicated1) In case of [A/D over] blinking
It is considered to be disconnected a part or whole of Load Cell cable. Refer the section9-5) Checking Sensor (Load Cell).
2) In case of the measured value blinking when n ot over-loaded. These two causes are
considered① Disconnection of sensor cable② Sensor failure
Please check input signal (mV/V) from a sensor in Test Mode.
９－４) Judgement whether this unit has malfunction
1) Please confirm whether the sensor excitation voltage is correct.
Disconnect Load Cell cable from this unit and check the voltage by a tester between#8(+EXC) and #9(-EXC) of the terminal is stable at 5V±0.5V (EXC=5V). If it is not stable,
this unit should have malfunction.
2) Make electrical short between #10(+SIG) and #11(-SIG) of the terminal (make input
voltage 0mV/V). Check input voltage in Test Mode. Please confirm whether it is stable at- 18 -

MA4-00285-R1

around 0.0000 mV/V. If it is not stable, this unit should have malfunction. If it is stable,please check Load Cell side.
3) Digital I/O check
Please perform I/O check in Test Mode.
９－５) Checking Sensor (Load Cell)
Good or bad rough judgement can be done by measuring input/output resistance andinsulation resistance because Load Cell is structured by a bridge circuit.
(Please make sure 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 insulation resistance between shield line and other with voltage less than 50V. I f
the insulation resistance has more than 1000MΩ, insulation of Load Cell is no problem.

- 19 -

MA4-00285-R1§１０．Specifications
１０－１) A/D convert part
1) Input signal range-3.3 to +3.3 mV/V
2) Non linearity±0.02%FS±1count3) Temp.
zero±0.0025%FS/℃ typ. at 1.0mV/V input, EXC=5V
Characteristic(Double the value at EXC=2.5V)
sensitivity ±0.0025%Reading/℃ typ.
4) Frequency response
approx. 2Hz(-3dB) at D.Filter=20
5) Sampling speed
approx. 100 times/sec. (10ms)6) Power for transducer
DC5V±5%, 60mA (able to connect 4 sensors of 350Ω)(DC2.5V±5% as option at the time of shipment)
１０－２) Zero point and Sensitivity part1) Adjustment range
zero
adjustable within the range of ±2.8mV/V input
sensitivity adjustable within the range of ±3.0mV/V input※ Sum of initial Tare level (zero point input value) andmaximum measured level (span amount) must notexceed ±3.3mV/V.
2) Minimum input sensitivity
0.25μV/digit(display resolution 1/20,000 at 1.0mV/V input, EXC=5V)
3) Calibration method
Actual load method or Equivalent input method１０－３) Display part
1) Display device2) Measured value display
3) Minimum scale4) Decimal point
5) Over load6) Unit display
7) Status indication
8) Display update１０－４) I/O part
1) Operation switch

LCD 5X7 dot, 8 lettersX2 rows, letter height 5mm
with green back light±99999 (zero suppressed)
1, 2, 5, 10, 20, 50, 100
0 (Nil), 0.0, 0.00, 0.000, 0.0000
Blinking when the measured value exceeds the capacity([A/D over] is displayed when input is out of range of A/D)
(None), g, kg, t, N, kN, N・m, kN・m, Pa, kPa, MPa, gf, kgf,
tf, mm, %, mV/V, μℇ
E:Abnormal analog output, Z:Tare subtraction, G:Gross
C:Calibration Lock,:Key Lock, H:Hold operation
10, 5 or 20 times/sec. (100ms, 200ms or 50ms)

7 key switches
ZERO
CLEAR
▲
▼ / (Hold)◀
▶
ENT: Tare subtraction: Clear Tare subtraction / Cancel Setting: UP / LCD back light ON/OFF / Pause Hold
: Down / Hold
: Left: Right: Enter Function Mode / Memorize

2) External command input (3 point)① Operation
7 commands can be allocated in Function Mode
② Input Signal
Contact input without voltage or Open collector input(Ic = 10mA, Voltage endurance more than 20V)
3) External output (2 point)① Operation② Output signal③ Rated output

7 judgements can be allocated in Function Mode
Relay contact, ‘a’ contact point (BREAK at powered OFF)DC24V, 1A (resistance load)- 20 -

MA4-00285-R1

１０－５) Analog output
1) Output signal① 4～20mA Current output② ±5V
Voltage output③ 0～10V
Voltage output
2) Non linearity
3) Temp. characteristic
4) Resolution5) Update period

resistance load ≦ 510Ω
output range 2～24 mA
resistance load ≧ 5kΩ
output range −6～+6 V
resistance load ≧ 5kΩ
output range −2～+12 V
0.1%FS (for display level)
Zero point, Sensitivity = ±0.01%FS/℃ typ.
(for display level)
Interlocking with display resolution (maximum 1/20,000)
Synchronized with sampling (10ms)

１０－６) General
1) Countermeasure of power failure
Setting data are memorized to a non-volatile memory2) Power supplied voltage
DC24V±10%, approx.100mA
Isolated from inner circuit by DC/DC converter3) Range of temp. & humidity−10～+40℃, 85% R.H. or less (no condensation)4) Mounting method
Panel mount type or DIN rail (option)5) Mass
approx. 150g

- 21 -

MA4-00285-R1

§１１．List of Models and Accessories
１１－１) Model
ＴＩ － ７０２－ＥＸＣ２．５Ｖ
Excitation voltage for Load Cell
Blank
: 5V
EXC2.5V : 2.5V (Option)
Product model name※ Option is available at the manufacturer before shipment. (Option at the time of shipment)

１１－２) Attached accessory1) Operation manual

1 copy１１－３) Accessory sold separately
1) TI-702-DIN-KIT
2) TI-702-AC-KIT

35mm DIN rail mount kit
AC adapter kit- 22 -

MA4-00285-R1

§１２．Terminal Layout
1) 3.5mm pitch, screw terminal, upper sideNo.
Connection Signal
1
E
Earth (Grounding)20Power line, DC 0V
3+24V
Power line, DC +24V
4
OUT1
Comparator output 1, ‘a’ contact
5
6
OUT2
Comparator output 2, ‘a’ contact
72) 3.5mm pitch, screw terminal, lower sideNo.
Connection Signal
8+EXC
Excitation voltage to Load Cell (+)
9−EXC
Excitation voltage to Load Cell ( −)10
+SIG
Input signal from Load Cell (+)
11−SIG
Input signal from Load Cell ( −)12
SHL
Shield line of Load Cell cable
13+OUT
Analog output (+)
14−OUT
Analog output (−)
15+IN1
External input 1
16+IN2
External input 2
17+IN3
External input 3
18−COM
Common ground of external input
Applicable wire specification:
Single wire =Φ0.4～1.2mm(AWG26～16)
Strand wire = 0.2～0.75mm 2 (AWG24～20),
Standard peeled wire length = 5～7mm

wire OD ≧Φ0.18mm

Load Cell cable should be wired apart from a power line or a motor drive line with noise toprevent 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, and connect correctly andfirmly.
Earth terminal (E) should be connected to the ground resistance ≦100Ω.

- 23 -

MA4-00285-R1

§１３．Dimensional drawing

DIGITAL INDICATOR

ZERO

CLEAR

TI-70235mm DIN

パネルカットPanel Cut

rail

Example of DIN rail option equipped§１４．Function Block Diagram
Gross Zr
GZeroClr

L/C

CAL(ZERO Point & Sensitivity
Adjustment)
Actual Load Calibration or
Equivalent Input Calibration

DigitalA/D

Filter

±3.3mV/V

A/D Ref

Gross Zr
ZERO point
correction

ZERO
GROSS
(Gross Weight)

CLEAR
L/C Power(2.5V/5V)350Ω
4 point

ZERO(Tare Subtraction)

DIV
Preset TARENET
(Fixed TARE Subtraction) (Net Weigh t) (1,2,5,10,20,50,100)
GROSS：External Command

Hold
Gross

NET

Display Hold

2 point comparator

D /APeak Hold

Quantitative value,
Hysteresis, Judgement(Upper Limit / Lower Limit)

4～20mA

1
2
Contact Output

Analog Output

Bottom Hold
NET / GROSSLCD Display(99999)- 24 -±5V
0～10V

MA4-00285-R1