Digital Indicator

TD-510Instruction Manual

TEAC CORPORATION
2007/07/01

Index1Overview ...............................................................................................................3

2Feature ..................................................................................................................33Configuration ........................................................................................................34

Accessory Items.....................................................................................................45Specification ..........................................................................................................4

6Instruction.............................................................................................................56.1.
6.2.

Function and Legend .........................................................................................................5
Rear Panel Connection ......................................................................................................67

Installation Warning ............................................................................................78

Zero Balance..........................................................................................................79Calibration ............................................................................................................89.1.
9.2.
9.3

Prior to Calibration ............................................................................................................8
Calibration with Actual Load ............................................................................................8Calibration without Actual Load (Internal CAL) .............................................................810Comparator Operation Point Adjustment........................................................811Analog Voltage Output......................................................................................812Bridge Voltage and Comparator Limit Setting ................................................813Exploded View ...................................................................................................814Warranty............................................................................................................821Overview

TD-510 digital indicator complies with various transducers such as a pressure, weight, and torque,utilizing a strain gauge, and a load-cell.
Although this unit is compact and low cost, it will equip the excitation power supply, zero adjustment,sensitivity adjustment circuit and the digital display function which are necessary as a transducer
indicator. Simply connect the transducer and the power for your measurement.

2Feature

1) Compact in size (DIN size 96W x 48H), light-weight, and installation is not limited in terms ofposition or location.
2) Equips the excitation power, zero adjustment, sensitivity adjustment circuit and the digital display
function which are indispensable for the transducer indicator. Simply connect the transducer andthe power for your measurement.
3) Supports a wide range of the strain type transducers, such as weight and pressure gauges.
4) Consists of the bridge excitation power, strain amp, zero, gain adjustment circuit, A/D converter
and the display. Offers dual power operation, AC 100Vand DC12V.
5) Besides digital indicator, it’s equipped with 0 ~±2V analog output to drive an analog meter.

3Configuration
1) Pre Amp
2) Zero Adjustment Circuit3) Gain Adjustment
4) Reference Power Supply5) Gain HI, LO Switch Circuit

6) Bridge Excitation Power Supply
7) A/D Converter Circuit8) Comparator9) CAL Circuit
10) Power Circuit34

Accessory Items

Power Cable (AC 100V)
Screw driver (Adjustment & Terminal Connection)
Instruction Manual

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Qty 1
Qty 1
Qty 1

Specification

Input
Bridge Power Supply

Zero Adjustment Range
CAL Value
Accuracy：Strain gauge type transducer：DC 2.5V or 5V
Max current 20mA
(Selectable with internal switch)：Any input value within 0.5mV/V~3.0mV/V (reference to displayed value1999)：Approx. ±0.3mV/V：1mV/V, 1 point：Within ±0.3%/F.S at F.S(1999) display[DISPLAY]
Display Range
Decimal Point
Display Module
Display CycleAnalog Voltage Output
Output Impedance：0~1999 (sign displays only on negative [-] side)：Selectable at arbitrary position from front panel：Numerical Red LED, Height 14.2mm：Approx. 2.5 per second：0~±2V approx.
：1kΩ or lessSensitivity Adj. Range[COMPARATOR]
PointsComparison Point
Comparison Range
Adjustment
Precision
OutputContact Capacity
Operation Display
Linearity
Stability Zero Point
Sensitivity：One point (High limit or low limit setting can be changed with the internalswitch.)：Compare on the plus side of the display value：-100~+1999 approx. of display value：Using a potentiometer on front panel：±0.3%/F.S or less (reference to the display full scale)：Relay contact (1T)
：AC125V 0.5A（resister load）or DC24V 1A：Indicates in red on the front panel LED during the relay usage.
：0.1%±1 digit of indicating value：0.01%F.S/℃ (at bridge voltage 5V, 1mV/V input)：0.01%F.S/℃[OPERATING CONDITION]
Temperature Range：-10~40℃
Humidity Range：Max 80% R.H. or lower with no condensation
Storage Temperature：-40~80℃
Power Consumption：AC 100V±10%、50/60HzApprox. 5VA
DC 12V±10%
Approx. 100mA
Dimension & Weight：96(W)x48(H)x120(D) (Anumbo excluded) Approx. 400g

4削除:

6Instruction

6.1. Function and Legend
Front Panel

1. Numerical Value Display Unit
The 7 segment LED display with 14mm font height. It displays the range of 000~1999.
The “-“ is shown in negative value and the over range is shown in “1xxx” format.
2. Comparator Setting Display Button (COMP)
Press this button and the LED display changes to the comparator setting.
To change the comparator setting, adjust the COMP potentiometer 4. while pressing thisbutton.
3. CAL Button (CAL)
The calibration voltage which is equivalent to 1mV/V is generated and injected to the input for
the gain adjustment using the sensor calibration table.
4. Comparator Operation Position Setting Potentiometer (COMP)
Used with 2. comparator operation position button, and the position can be adjusted within therange of -100~1999. Press 2. button and the indicator display changes to the set value.
5. Zero Adjustment Potentiometer (ZERO)
A potentiometer (15 turns) to adjust the zero output voltage when there is no sensor load.
Zero adjustment range is ±0.3mV/V.
6. Gain Adjustment Potentiometer (GAIN)
An input range 0.5~3mV/V can be adjusted to an arbitrary display value.
7. Comparator Operation Lamp (COMP)
Comparator operation LED linked with a relay operation.
8. Decimal Point Setting Rotary Switch (DP)A switch to select an arbitrary decimal point position in the display.
56.2. Rear Panel Connection
The external connecting terminal is a cage clamping style terminal. Connecting wires should be
prepared as following.
1) Strip the connecting wire tip for 4~5mm.
2) Twist the tip of stripped bare wire.
3) Insert the accessory screw driver into the upper terminal hole.
4) Carefully Insert the wire into the lower hole.
5) Remove the inserted screw driver.
6) Pull the wire lightly to check if the wire is correctly fastened.
● Recommended wire is 0.2~2.5mm (AWG24〜AWG14).
Rear Panel

Terminal Connection Table
Terminal No.
123456789101112
1314

Signal (ASSIGN)
AC100V Power In
AC100V Power In
DC 12V Power In ＋DC 12V Power In −COMP NC
COMP COM
COMP NOA( +EXC )B( -SIG )C( -EXC )D( +SIG )E( F.G )ANALOG OUT +ANALOG OUT -Description
Power AC100V
Power AC100V
Power DC12V ＋Power DC12V −Comparator Out NC
Comparator Out COM
Comparator Out NO
Excitation +Signal Out Excitation Signal Out +Sensor Shield / GND Terminal
Voltage Output +Voltage Output -Caution
Incorrect connection of or applying excessive voltage to the power terminals may
damage the unit or cause fire. Check the power connection before turning it on.

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7

Installation Warning■ Because the signal from the transducer is low, special attention is necessary during installation toprevent mixing the noise. Use the recommended 4 leads wire for the signal cable from thetransducer and keep the exposure of the inner wire minimum from the shielding net. Wires
connecting to the terminal No 8-10 and 9-11 must be twisted to prevent affecting the AC hamnoise.
■ Wires connected to the control panel must be placed so that they are not parallel to the power lines.
Keep the distance from an inductance motor, power transformer or any device that generates astrong magnetic field. If necessary, run the cables from the transducer through the dedicatedshielding pipe.
■ Avoid areas where large temperature change is expected (areas where external air flows). Use
where the ambient temperature is -10~+40℃.
■ When multiple TD-510s are used, keep the minimum distance of 10mm between them to minimize
the temperature rise or noise radiation.

8Zero Balance

The transducer output generates a slight voltage even at no load. Moreover, the voltage that
corresponds to the tare weight is generated when there is a tare in a weight device, etc. The zerobalance range is ±0.3mV/V. However if the zero cannot be balanced within this range, add anexternal zero shift resister which best corresponds with the transducer output and shift the zero point
electrically to fit within ±0.3mV/V range.
The RZ is connected to either side of the unbalanced connections. The shift direction is determinedby where the resister is added, -SIG(B) - +EXC(A) or -SIG(B) - -EXC(C). For the unbalancecancellation of which weight device creates withthe tare weight (sensor’s + side output), insert
the RZ between –SIG and +EXC (B-A). Use theRZ resister with the least temperature drift
characteristic (50ppm/℃ or less) as it affects theTD-510 zero point drift performance. Thismethod is also applied for the indicator’ssensitivity calibration when the indicatorreplacement is done.
In normal practice, the initial calibration is performed using a transducer and actual load. However if
the re-calibration is not considered practical, you can still do it without using an actual load in thefollowing manner. First, select the appropriate RZ resister value after the initial calibration, thenrecord the display value with the RZ connected. If the indicator brakes down after performing thezero balance, connect the same RZ resister in the same location and then adjust the sensitivity tobring the display to the same value.
This calibration method is not applicable for the transducer failure. In the next page, the list of theresistance value vs. the shift amount is shown when it is connected to the one side of the bridge
circuit with a transducer resistance of 350Ω and 120Ω. These are only calculation values. Usethem as a reference guide as transducer’s input and output resistances may have errors.
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Transducer Shift
Amount(mv/v)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.2
1.4
1.6
1.8
2.0

350Ω Transducer

120Ω Transducer

875
437
291
219
175
146
125
109
97
87
73
62
55
48
44

300
150
100
75
60
50
43
37
33
30
25
21
19
1715(Unit KΩ)

9Calibration

9.1. Prior to Calibration“Performing a calibration” is when you set the display to a desired reading value for the weighing
load to be used after setting the TD-510 reading to “000” with the zero weigh load of the weighing
device.
Two types of transducer excitation voltage, 2.5V and 5V are available. The basic setting is to set thehigher side within the permissible excitation voltage range listed in the transducer test result sheet.
However you may set the lower bridge voltage when the sensor output is large and the desired
display value is small.
A sensor output 0.5~3mV/V can be set to an arbitrary display value 0~1999. The adjustment uses amechanical potentiometer and it may be difficult to make an adjustment at the position where it isturned all the way or closed. To avoid adjusting at such a potentiometer position, refer to the“Possible approx. display setting range at the sensor input of 0.1mV/V” in page 8.

9.2. Calibration with Actual Load
1. Connect the transducer with zero weight load and adjust the “ZERO” potentiometer until thedisplay value is “000”.
2. Apply a known weight load and adjust the “GAIN” potentiometer to the actual known weightreading.
3. Remove the weight load and adjust the “ZERO” potentiometer to the “000” reading.
4. Repeat procedure 2. and 3. for the confirmation.

89.3 Calibration without Actual Load (Internal CAL)
If there is no known weight load available, perform the calibration using the TD-510 internal
calibration voltage (1mV/V).
1. Compute the display value (Converted Display Value) which is converted to the internal
calibration voltage (1mV/V) using the formula below.
Internal Calibration Voltage (1mV/V)--------------------------------------------------------- x V(F.S) = Converted Display ValueWeight output from transducer (mV/V)

Example)V (F.S) ：Target Display Value
Rated Weight ･･････ 1000kg
Output at Rated Weight ･･････ 1.876mV/V
to set the TD-510 display to “1000”.
1-------------- x 1000 = 533
1.876

2. Connect the transducer with no load and adjust the “ZERO” potentiometer to “000” reading.
3. Press and hold the CAL button on the front panel, then adjust the “GAIN” potentiometer to“533” which was computed in the above formula.
4. Release the CAL switch and adjust the “ZERO” potentiometer to “000” reading.
5. Repeat the process 2. and 3. for confirmation.

10 Comparator Operation Point Adjustment
This unit equips a single point comparator.
The comparator examines the analog signal voltage and it is used to indicate the general warnings
and an excess or deficiency weight to an external device. To set the comparator operation point,press and hold the 2. comparator setting value display button and adjust the 4. comparator operation
position setting potentiometer to a desired position.

11 Analog Voltage Output
The output voltage of this unit is ±2V however this gain and offset may be slightly off. Therefore thezero offset and the output span adjustment is recommended when it is connected to a data recorderor other external device. Connection should be kept as short as possible. Avoid connection to an
excessive capacitance and inductance load.

12 Bridge Voltage and Comparator Limit Setting
There are selecting switches on the internal PCB, which are for the bridge voltage, the sensitivity andthe comparator. You can access them by removing the two screws located on the side panel. Make
necessary changes according to the sensor specification.
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[Switch Functions and Internal Circuit Operation]
1. (SW2) Bridge Excitation Voltage
Note that the bridge excitation voltage should not exceed the sensor’s allowable excitingvoltage.
● Factory default setting : 5V
2. (SW1) Sensitivity Switch
Select according to the sensor’s output. The ‘HI’ has twice as much gain as the ‘LO’.
● Factory default setting : LO
3. (SW3) Comparator Operation
The ‘H’ indicates the High limit and the ‘L’ for the Low limit.
High Limit (H): Display value ＞ Turns NC contact “ON” at set level.
Low Limit (L): Display value ＜ Turns NC contact “ON” at set level.
● Factory default setting : Low Limit
Possible display setting range on the sensor input at 0.1mV/V
B ri dg e V ol ta g e ( V )2.5

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S e n e itivity S W (HI )20 〜 400

40 〜 800

S e n e itivity S W (LO )10 〜 200

20 〜 400

Location of selector switches on the PCB

1. SW2
Bridge voltage selector

2. SW3Comparator operation selector

3. SW1
Sensitivity selector10

13 Exploded View

14 Warranty
TEAC Corporation warrants this unit to be free of defects in materials and workmanship for a periodof 12 months from date of purchase. If the TEAC Corporation product you purchased appears tohave a defect in material or workmanship or fails during normal use within the period, please contact
our company or your distributor, who will assist you in resolving the problem. If the unit is found to
be defective, it will be repaired or replaced at no charge.

TEAC CORPORATIONBS BUSINESS UNIT
Headquarter
3-7-3, NAKA-CHO, MUSASHINO,TOKYO 180-8550 JAPAN83
Sales

Tel: (+81) 442-52-5074

http://www.tic.teac.co.jp
tic_cs@tic.teac.co.jp

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