A&D AD-4530 Instruction Manual

-2- 

-3-

-4-

-1- 

Guide rail 

Case 

Option board 

Front panel 

Blank panel

94.8

44.6

120

96

48

(1

39

.1

)

7.

5

45

+0

.6

-0

92

+0.8

-0

MIN. 120

MI

N

. 70

A D- 45 30

HI              OK            LO

OZ

HOLD

HI

+/-

PRINT

HOLD

LO

ESC

ZERO

1

3

2

5

4

1

1

2

3

AD-4530 

Digital Indicator 

Simplified

Instruction Manual 

© 2011 A&D Company, Limited. All rights reserved. 

No part of this publication may be reproduced, transmitted, 

transcribed, or translated into any language in any form by any 

means without the written permission of A&D Company, Limited. 

The contents of this manual and the specifications of the 

instrument covered by this manual are subject to change for 

improvement without notice. 

This is a simplified instruction manual. For a detailed 

instruction manual, refer to A&D’s web site. 

URL: http://www.aandd.jp/ 

1WMPD4002283 

1. BEFORE USE 

The digital indicator is a precision instrument. Unpack the digital 

indicator carefully and confirm that all items are present. 

1.1. Precautions Before Use 

  Avoid water and moisture. 

 Avoid vibration, shock, extremely high temperature and humidity, 

direct sunlight, dust, and air containing salt or sulfurous gases. 

  Avoid places where inflammable gases or vapors are present. 

  The operating temperature is -10°C to +40°C. 

 A 100 VAC to 240 VAC power source is required. Use a stable 

power supply free from sudden dropout or noise as they can cause 

malfunctions. Avoid sharing the power line. 

 Keep cables away from power cables and other sources of 

electrical noise. 

  Connect only a non-inductive load of 10 kΩ or more to the analog 

voltage output terminals. 

  Connect only a non-inductive load of 510 Ω or less to the analog 

current output terminals. 

 When connecting long cables to the sensors, keep the cables 

away from power cables and other sources of electrical noise 

  Do not connect the AD-4530 to the power supply before installation 

is completed. The AD-4530 has no switch to disconnect the power 

supply.  

  Use shielded load cell cables. 

  Do not connect too many sensors. Otherwise, instrument damage may 

occur. 

1.2. Precautions During Use

  The AD-4530 is a precision instrument that measures the microvolt 

output from sensors. Prevent noise sources such as power lines, 

radios, electric welders or motors from affecting the instrument.   

  Do not try to modify the AD-4530. 

 In all hold modes, the hold data is saved digitally, so there is no 

drooping of the value displayed on the display panel or the analog 

output. Note that the hold function is disabled when the AD-4530 is 

disconnected from the power supply.   

Disconnect from the power supply before removing the cover. 

  When removing the cover, make sure that the power is off. 

Do not touch the instrument immediately after it is disconnected 

from the power supply. 

  To avoid electrical shock, do not touch the internal part of the 

instrument within ten seconds after switching the power off. 

Be sure to fasten all the screws completely. 

  Loose screws may come off during operation and a short circuit 

may occur or measurement errors may occur due to noise.   

2. EXTERNAL DIMENSIONS

Panel cutout dimensions / Separation 

*Maintain the intervals above when installing 

Unit: mm 

3. GENERAL SPECIFICATIONS 

Voltage requirement: 

100 VAC to 240 VAC +10%, -15% (50/60 Hz) 

Power requirement: 

Approx. 10 VA 

Sensors: 

5 volt, 120 Ω, one sensor maximum 

5 volt, 350 Ω, three sensors maximum 

Operating temperature:    -10 °C to +40 °C 

Operating humidity:   

Max. 85% RH (no condensation) 

External dimensions:   

96 x 48 x 127.5 mm (W x H x D)   

Panel cutout:   

92 x 45 mm 

    Separation:   

Width: 120 mm or more 

Length: 70 mm or more

Weight:   

Approx. 290 g 

4. OPTIONS

4.1. Options   

AD-4530-200: Relay 

output 

AD-4530-030: RS-485 

AD-4530-040: RS-232C 

AD-4530-007: Analog 

output 

AD-4530-237:  Relay output, RS-485, analog output 

AD-4530-247:  Relay output, RS-232C, analog output

Note: Only one option can be installed in the AD-4530 at a time. 

4.2. Installing an option 

1.  Remove the two screws that secure the guide rail, and then remove 

the guide rail. 

2. Remove the two screws that secure the case. 

3. Pull the case out from the front panel (holding it as shown). 

4. Remove unnecessary blank panels with nippers, etc. 

5. Insert the option board at the position specified on the rear of the front 

panel. 

6. Reattach the case and guide rail by reversing the steps above. 

5. FRONT PANEL

5.1. Display 

Displays a measured or set value. To set the decimal point position, use 

function mode Cf01. The display is composed of four seven-segment 

indicators plus a minus sign. 

5.2. Status indicators 

Name Description 

1

HI 

Turns on when the measured value is greater than 

the upper limit (HI). 

2

OK 

Turns on when the measured value is equal to or greater 

than the lower limit and equal to or less than the upper 

limit. 

3

LO 

Turns on when the measured value is less than the 

lower limit (LO). 

4

DZ 

Turns on when adjusting the digital zero. 

5

HOLD

Turns on when a value is being held.

5.3. Keys

Operation Function 

Press to proceed to the upper limit value 

setting mode. 

When inputting a numerical value, press to 

change the polarity. 

Press to proceed to the lower limit value 

setting mode. 

When inputting a numerical value, press to 

cancel the setting. 

Press to turn the digital zero on. 

When inputting a numerical value, press to 

shift the position of the blinking digit to the 

right or change the function group. 

+

Press to turn the digital zero off. 

Press to turn holding on or off. 

When inputting a numerical value, press to 

change the blinking digit or change the 

function parameter. 

Press to output the serial data (print). 

When inputting a numerical value, press to 

enter the setting. 

+

Press to proceed to calibration mode. 

+

Press to proceed to function selection 

mode. 

+

+

Press to proceed to selection mode in the 

check mode. 

* The digital zero function sets a desired measurement point as zero and 

displays the deviation from this zero point. When measuring a load, it can 

be used as the tare, etc. 

* The zero value is saved in non-volatile memory (EEPROM). This zero 

value is retained even after the power has been turned off and on (or 

power is lost).

* To change the digital zero operation, use the function Cf11 . 

To protect against accidental operation, press       and        to 

turn the digital zero on or off. 

5.4. Operation mode

- Upper / lower limit setting mode 

Use this mode to set the upper and lower limit of the comparator. 

- Calibration mode 

Use this mode to perform zero and span calibration with an actual load. 

- Function setting mode 

Use this mode for setting functions. 

- Check mode 

Use this mode to confirm input and output operation. 

6. REAR PANEL

Confirm the terminal numbers when making connections.

 When  making  connections,  confirm the terminal 

numbers printed on the side of the terminal block and 

on the top of the indicator casing. 

6.1. Connector function 

6.1.1 AC input connector 

(1) AC    Connect the AC power cord. 

(2) AC    The power requirement is 100 VAC to 240 VAC, 50/60 Hz. 

When making connections, 

  Switch off the power of all the instruments used 

 Keep cables away from power cables and other 

sources of electrical noise 

6.1.2 Load cell / Control input connector 

Load cell 

(1) SHLD   

Connect the shielded cable of the sensor cable. 

(2) SIG-   

Negative signal input terminal for the sensors. 

(3) SIG+   

Positive signal input terminal for the sensors. 

(4) EXC-    

Negative excitation terminal for the sensors. 

(5) EXC+   

Positive excitation terminal for the sensors. 

Control input 

(6) COM 

Input common terminal. 

(7) LATCH    Inputs the latching signal for the function settings 

and outputs. 

(8) HOLD 

Inputs the hold signal.   

(9) ZERO 

Inputs the zero correction signal.   

6.1.3 Relay output connector (Option) 

(1) COM   

Relay output common terminal 

(2) LO   

Relay LO output terminal 

Outputs LO when the measured value is less than the 

lower limit. 

(3) OK   

Relay OK output terminal 

Outputs OK when the measured value is equal to or 

greater than the lower limit and equal to or less than 

the upper limit. 

(4) HI   

Relay HI output terminal 

Outputs HI when the measured value is greater 

than the upper limit. 

Comparator output 

  To prevent damage, do not exceed the rated capacities 

of the output relays.   

To protect the output relays, use a varistor, CR circuits or 

diodes. 

6.1.4 Serial communication connector (Option) 

In the case of RS-232C 

(1) IC 

Connected internally (Do not use) 

(2) IC 

Connected internally (Do not use) 

(3) SG 

Signal ground terminal 

(4) TxD 

B terminal 

(5) RxD 

A terminal 

In the case of RS-485 (Two-wire connection) 

(1) B 

B terminal   

(2) A 

A terminal 

(3) SG 

Signal ground terminal 

(4) B 

B terminal 

(5) A 

A terminal 

* Each of the A and B connections has two terminals. 

These terminals are connected internally and can be used for a 

terminating resistor or multi-drop connection. 

6.1.5 Analog output connector (Option) 

(1) COM 

Common terminal of the analog output 

(2) IOUT 

Analog current output terminal 

(3) VOUT 

Analog voltage output terminal 

4  3  2  1 

5  4  3  2  1

3  2  1

1  2

1  2  3  4  5  6  7  8  9

Relay output

RS-232C／RS-485 Analog output

AC

Load cell / Control input

AD-4530

HI              OK            LO

DZ

HOLD

HI

+/-

PRINT

HOLD

LO

ESC

ZERO

Display

Keys 

1                  2                  3

4

5

AD-4530

HI              OK            LO

DZ

HOLD

HI

+/-

PRINT

HOLD

LO

ESC

ZERO