AD-4401A
Weighing Indicator
Simplified Instruction ManualThis manual is a simplified version of the instruction manual.
When using the indicator, please read the AD-4401A Weighing Indicator
Instruction Manual which is available on our website.
Download the latest complete instruction manual at:
URL: https://www.aandd.jp/
No part of this publication may be reproduced, transmitted, transcribed, ortranslated into any other language in any form by any means without thewritten permission of A&D Company, Limited.
The contents of this manual and the specifications of the instrument coveredby this manual are subject to change for improvement without notice.
2015

No.
Name
1 Main2 Sub
3 UnitStatus DisZERO/STABLE (MD: Motion detection)/GROSS/NET/HOLD/
play (Upper) 4 FUNCTION/ALARM
Loss-in-weight
Normal batching
Check weighing
batching
Finalweight/
Free
Finalweight/
Free
Near-zero/ Lo-Lo /Statusfall/Preliminary / Full / Lo / Go / Hi / Hi-Hi
Display
5 fall / Preliminary /Optional preliminary / Overweight /(Lower)
Underweight /Overweight /Near-zero
Underweight /Near-zero
6 CAL (Calibration) key
SETPOINT: Sets the setpoint values for batch weighing andcheck weighing.
ZERO:
Sets the gross value to zero when the weight value
is within the zero setting range. (Default zero setting
range: 2% of maximum capacity)
Key
Saves the current gross value as tare and sets theSwitches
7 TARE:
net value to zero.
NET/GROSS: Selects the weight value display method, gross ornet.
Function:
No function is assigned in the default setting.
ENTER:
Does not function alone.
ON/OFF:
Turns the display on or off.
8 Rating label (Accessory)
Other
9 Sealing coverAttach the accessory status label when performing loss-in-weightbatching or check weighing.
Numerical
Display

A&D Company, Limited
3-23-14 Higashi-Ikebukuro, Toshima-ku,
Tokyo 170-0013, JAPAN1WMPD4003052A

1. Safety Precautions
Read the following precautions carefully before using the indicator.

1WARNING
Provide an external safety circuit to the indicator so that the safety of the wholesystem can be secured even if errors occur in the external power supply or in
the indicator.
WARNING
Do not use the indicator in the following environments:- where the temperature and the humidity exceed the specifications- where corrosive gases or flammable gases exist- where the indicator gets wet with oil, chemicals or water
Please note that securing the indicator to the control panel will provide theindicator outside of the control panel with IP65 protection.
When installing or removing the indicator, be sure to turn off all used external
power supplies beforehand.
[Precautions for wiring]
WARNING
When wiring the indicator, be sure to turn off all used external power supplies
beforehand.
When wiring is complete, be sure to attach the terminal block cover provided
with the indicator.
Be sure to earth ground the indicator.
CAUTION
Do not clamp control wires or communication cables with power lines or placethem close to power lines.
Place the load cell cable sufficiently away from high frequency circuits such as
high voltage power lines and inverter load circuits.

2. Part Names

291213AC power input (Neutral) Earthed conductive partAC power input (Live) Unearthed conductive part

5No.

Name

1 SETPOINT input connector
2 CONTROL I/O connector
SER.OUT3(Standard serial output) connector
4 Option slot
5 Load cell input terminal block67Name
Optional analog 4-20 mA output
6terminal block
7 AC power input terminal block
8 Protective conductor terminal
9 Slide rail

2.3. Accessories
Name
Terminal block cover
Terminal block cover securing screw
Connector for the CONTROL I/OConnector for the SER.OUT

Qty.
Name
1 Panel mount packing
2 Rubber foot1 Rating label
1 Status label

Qty.
1
4
1
1

5. Connection to Load Cell
TMLNo.
1
23
4
5
6
7

6-wire connection

SymbolEXC+SEN+SENEXCSIG+SIGSHLD

Load cell excitation voltage +Sensing input +Sensing input Load cell excitation voltage Load cell signal input +Load cell signal input Frame ground

3+1

68 -0

Remove the slide rails on both sides
and insert the AD-4401A with theaccessory panel mount packing
through the hole into the panel.

Insert the slide rails from behind.

Press the ON/OFF key twice to return to the normalmode.

7. Functions
When the AD-4401A is powered ON, all the segments of the display turn ON and
OFF to check the display. Then the AD-4401A enters the normal mode and starts
weighing.
If the AD-4401A is powered OFF during the OFF mode (with the display OFF), theAD-4401A will be in the OFF mode when powered ON.

Set the following calibration functions which are required for calibration usingcalibration weights.
CALF- Item
Setting Value Default CALF- Item
Setting Value Default
01 Unit0: None2
03 Minimum 1､2､5､10､
1
1: g
division 20､50 d
2: kg
3: t
4: lb
02 Decimal 0:0 (No D.P.)
004 Maximum 0 to 999999 20000
point
1:0.0
capacity
position 2: 0.00
3: 0.000
4: 0.0000
The rest skipped (For details, refer to the instruction manual)

7.1. Control I/O

B1

B8

A1

A8Connector for the Control I/O
Connector:
OTAX N361J016AU (A&D Part No.: 1JI361J016-AG)
Connector Cover: OTAX N360C016B (A&D Part No.: 1JI360C016-B)
Pin No.
A1
A2
A3
A4
A5
A6
A7
A8

Description
Zero setting
Input
Tare
Input
Weighing start
Input
Emergency stop
Input
Discharge start
Input
Key lock
Input
Input common
Output common

Pin No.
B1
B2
B3
B4
B5
B6
B7
B8Connection Diagram680 Ω

12 V
3.3 kΩ

A1Press the CAL key in the normal mode.

A6+1

A7

When “CAL Fnc” is displayed, press the ENTER key.

Panel thickness
1.6 to 3.2

Description
Near-zero
OutputUnderweight, Hi-Hi
OutputOK, Hi
OutputLarge flow, Full, GoOutput
Medium flow, Lo
OutputSmall flow, Lo-Lo
OutputDischarge
OutputWeighing end
Output

The above are the default settings. Assigned functions can be changed for each pin.

When “CAL SEt” is displayed, press the NET/GROSS key.
138 -0

1

Span calibration
Set the calibration weight value in the sub-display.
Press the ENTER key when the STABLE (MD)status is turned OFF.
Dashes are displayed in the sub-display and spancalibration is performed.

Description

When “CAL” is displayed, press the ENTER key.

84Zero calibration
Press the ENTER key when the STABLE (MD)status is turned OFF.
When the Function key is pressed, the AD4401A proceeds to span calibration without
performing zero calibration.
Dashes are displayed in the sub-display and zero
calibration is performed.

Neutral6.1. Calibration Setting

No.

When “CAL SEt” is displayed, press the ENTER key.

LiveCalibrates the AD-4401A to convert the signal from the load cell to a mass
value correctly.

Make a hole in a control panel as shown below.

7

Ground terminal

6. Calibration

3. Installation to Control Panel

2.1. Front Panel

6

When “CAL” is displayed, press the ENTER key.

11

For 4-wire connection, short-circuit the terminals No.1 and No.2, and terminals
No.3 and No.4.

8

Press the CAL key in the normal mode.

Description

34[Precautions for installation]

9

Terminal
SymbolNo.

6.2. Calibration Using Calibration Weights

2.2. Rear Panel[Precautions for designing]25

4. Connection to Power SupplyCalibration function mode

Control input- ON voltage: 5 V or less- ON current: 3 mA or more
- OFF current: 1 mA or lessAD-4401A

Unit: mm
B1AD-4401A

Control panel
Panel mountpacking
B8Slide rails
3.3 kΩ
AD-4401A

A8

Control output- Maximum load voltage:
30 VDC- Maximum load current:
50 mA/point- Voltage drop at ON:
1 V or less
- Leakage current at OFF:
0.1 mA or less

Setpoints are set using the setpoint input from external devices.
Setpoints that cannot be set using the setpoint input are set using key switches.

B1A1

B12A12B1

B20

A1A20AD-4401A

Connector for the Option-01 BCD output
Connector:
OTAX N361J040AU (A&D Part No.: 1JI361J040-AG)
Connector cover: OTAX N360C040B (A&D Part No.: 1JI360C040-B)

Connector for the setpoint
Connector:
OTAX N361J024AU (A&D Part No.: 1JI361J024-AG)
Connector cover: OTAX N360C024B (A&D Part No.: 1JI360C024-B)
The connector is not provided and must be supplied by the user.
Settable setpoints depend on the weighing mode.
For details, refer to the instruction manual.
Connection Diagram
Setpoint input is 4 x 16 key matrix input.
680 ΩConnection Diagram
RS-4227.4. Option-01 BCD Output

7.2. Setpoint Input

5V1 kΩPin No.

Description

A1
A2
A3
A4A5A6A7A8A9A10
A11A12A13

14
1040
100
400
1000
4000
10000
40000
100000400000OFF: Overload

A14

ON: Stable

A15
A16Decimal point position
A15 = ON,
B15 = ON,
A15 = OFF, B15 = ON,
A15 = ON,
B15 = OFF,A15 = ON,
B15 = ON,
A15 = ON,
B15 = ON,Unit
A17 = OFF, B17 = OFF:A17 = ON,
B17 = ON:
A17 = OFF, B17 = ON:
A17 = ON,
B17 = OFF:
Strobe output
CommonFrame ground

A17A18A19
A20

Description
2820
80
200
800
2000
8000
20000
80000
200000800000
ON: Positive
OFF: Negative
ON: Net value
OFF: Gross or Tare value
A16 = ON,
A16 = ON,
A16 = ON,
A16 = OFF,A16 = ON,

B16 = ON:
B16 = ON:
B16 = ON:
B16 = ON:
B16 = OFF:

None
0.0
0.00
0.000
0.0000None or kggtlb
Hold input
CommonFrame ground

100 Ω
Pin
No.
B1
B2
B3
B4
B5B6B7B8B9B10
B11B12B13

Key scan output- Voltage drop at ON:
1 V or less
- Leakage current at OFF: 0.1 mA or lessKey scan input- ON voltage: 1 V or less- ON current: 3 mA or more
- OFF current: 1 mA or less7.3. Standard Serial (Current Loop) Output
Pin Assignment

4251367Pin No.
12345
67Shell

680 ΩDescription

NC
Frame ground
Current loop output
NC
Current loop output
NCNC
Frame ground

5V
1 kΩ

No sign

AD-4401ANo sign

B15
B16

Communication Functions
Interval output at the display update rate. (Default)

Master

1 Send data +2 Send data 3 Receive data +4 Receive data 56 Signal ground2-wire RS-485
To use the 2-wire RS-485, set “RS-422/485 electrical specifications (rS F-08)” to 2.
Short-circuit the terminals No.1 and No.3, and the terminals No.2 and No.4.
Terminal resistors must be installed on both ends of the circuit.
AD-4401A

Master1
34567.6. Option-04 RS-232C211

The applicable connector is a D-sub 25-pin male connector. The locking screw isM2.6. The connector is not provided and must be supplied by the user.

Data output, Strobe output- Maximum load voltage:
30 VDC- Maximum load current:
50 mA/point- Voltage drop at ON:
1 V or less
- Leakage current at OFF:
0.1 mA or less
Hold input- ON voltage: 1 V or less- ON current: 3 mA or more
- OFF current: 1 mA or less

Pin No.
123
456

Description
FG
RXD
TXD
CTS
RTS
DTR

Pin No.
789 to 19
2021 to 25

Description
GND
DCD
NC
DSR
NC

Connection Diagram
Connection to a PC serial port is as follows.
AD-4401A

8 DCD

1 DCD

3 TXD

2 RXD

2 RXD

3 TXD

20 DSR

4 DTR

7 GND

5 GND

6 DTR

6 DSR

4 CTS

7 RTS

5 RTS

8 CTS

22 DI

9 RI

Communication Specifications (Default)
7.5. Option-03 RS-422/485

Signal Level (rS F-08, rS F-09)
Baud rate (rS F-03)
Character bit length (rS F-05)
Parity (rS F-04)

RS-232 compliant
9600 bps
7 bitsEvenPC

Start bit length
Stop bit length (rS F-06)
CodeTerminator (rS F-07)

1 bit
2 bitsASCII
CR LF

Communication Functions
Interval output at the display update rate. (Default)
7.7. Option-07 Analog 4-20 mA Output
Terminal No.
123
456Description
Send data +Send data Receive data +Receive data Open-circuit:
Disable the terminal resistor
Short-circuited to No. 4: Enable the terminal resistor
Signal groundThe communication specifications and communication functions are the same as
those for the RS-232C.

External load resistance

8. Software Version
Confirm the software version in the normal mode by doing the following:

9. Specifications

B17

B18
B19
B20

ShieldAnalog current +Analog current -1. Press and hold the ENTER key and press the SETPOINT key.
2. Press and hold the ZERO key and press the ENTER key.
3. Press the Function key.
4. Press the ENTER key.
The software version is displayed in the sub-display.
5. Press the ON/OFF key twice to return to the normal mode.

2

1

Connector for the standard serial (current loop) output
Connector: Hosiden TCP0576-715267 (A&D Part No.: 1JATCP0576)
Communication Specifications (Default)
Signal level
Current loop 0 to 20 mA
Baud rate (Si F-03)
2400 bps
Character bit length
7 bitsParityEven
Star bit length
1 bit
Stop bit length
1 bit
CodeASCII
Terminator
CR LF

Applicable solderless terminal: R1.25-3
Applicable wire size:
0.3 to 0.75 mm2
Use a 2-wire shielded twisted
pair cable.
External load resistance:
0 to 600 Ω

B14Connection Diagram

AD-4401A

Connection Diagram

Terminal No
8910Symbol
A+
ASHLD

Description
Analog current output +Analog current output Frame ground

Dimensions
144 (W) x 72 (H) x 197 (D) mm
Operating temperature and humidity -10 °C to 40 °C
range
Less than 85%RH, non-condensing
IP rating
When the indicator is secured to the control panel:
Outside of the control panel: IP65
Inside of the control panel: IP2X
Power supply
Power supply voltage
100 to 240 V AC +10% -15%
50/60 Hz ±5%
Maximum apparent power 30 VA
Rush current
100 V AC: 15A or less, 200 V AC: 30A or less
Fuse
Internal (Not user replaceable)
Load cell input
Excitation voltage
10 VDC ± 5% 230 mA
Up to eight 350 Ω load cells can be connected in parallel.
6-wire type with remote sensing
Signal input range
0.0 to 3.2 mV / V
Minimum input sensitivity0.3 μV
Zero calibration range
0.0 to 2.0 mV / VNonlinearity±0.01%
Temperature coefficient
Zero drift: ± 0.2 μV / °C RTI Typ.
Span drift: ± 8 ppm / °C Typ.
Sampling rate
100 times/s
Display
Main display
7-digit VFD with character height of 13 mm
Sub-display
8-digit VFD with character height of 7 mm
Unit
g, kg, t, lb or none (selectable)
Status display
14Key switches
Key switch
7Key switch with sealing cover 1
External Input / output
Control I/O
Non-voltage contact input: 6 points
NPN open collector output: 8 points
Setpoint input
Key matrix inputStandard serial output
Current loop output
Option boards
BCD output
RS-422/485
A dedicated slot is available only for analog 4-20 mA
RS-232Coutput.
Among other option boards, only one can be installed.
Modbus TCP
Analog 4-20 mA output

External Dimensions

When the optional analog 4-20 mA output is not installed, the terminals No.8 andNo.9 are vacant.
Check the 07 column of the option list on the side of the indicator casing.
Panel cutout dimensions
Panel thickness: 1.6 to 3.2

Unit: mm