AD-4430R
DIN Rail Weighing Module
With RS-485 (Modbus RTU)

3.

Vent

Simplified Instruction Manual

4.1.2.

Zero :

LED lights when the weighing value is center zero.

Step 5 Whenis displayed, press the
key. The current calibration
weight value is displayed. A figure flashes. Specify a new value using theandkeys. When canceling span calibration and returning toweighing mode, press the
key twice.
Step 6 Place the mass on the weighing pan. Confirm that the
LED is lit andpress thekey. Thenis displayed for 2 seconds.
Step 7 Whenis displayed, remove the mass from the weighing pan.
When repeating span calibration, press the
key.
Step 8 Press the
key. Thenis displayed and calibration data isstored in the nonvolatile memory (FRAM) of the AD-4430R.
Step 9 Press the
key to return to weighing mode.

LED lights when indicating gross value.

3.4. Status indicators

Net :LED lights when indicating net value.

3.5. Key Switches
Operation

Hook for DIN railThis Manual2018
All rights reserved.
3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, JAPAN
Telephone: [81] (3) 5391-6132
Fax: [81] (3) 5391-6148

1. Cautions
Installation and Precautions

Before use, confirm the following articles for safe operation.
Avoid vibration, shock, extremely high temperature and humidity, direct
sunlight, dust, splashing water, air containing salt or corrosive gases, places
where inflammable gases are present.
The operating temperature is -10°C to +50°C (14°F to 122°F).
Ground the module.
Keep cables away from power cables and other sources of electrical noise.
Use a stable DC24 V power source that does not include step down voltage
and noise.
Do not share the earth ground line and power line with other electrical power
equipment.
When extending the load cell cable, separate it from the power cable andelectrical cables with much noise.
Do not turn on the module until installation is complete. The module is not
equipped with a switch to turn off.
After the installation is complete, take off the protective cover prior to turning on
the AD-4430R.
Use a shielded load cell cable.
Do not connect more sensors than the allowable number noted in the specifications.

General Specifications

Voltage requirement DC 24 V +10%, -15%
Power requirement 6 W Max.
Load cell power supply DC 5 V 350  sensor. Up to 4 load cells can be connected.
Operating conditions -10 °C to +50 °C, Max 85 %RH (no condensation)
External dimensions 35.3 × 110.0 × 101.3 mm (W×H×D)
Mass
Approximately 200 g
The monitor displays measurement data and settings withMain display
7 segments of 5 digits and negative sign. The decimal pointis specified at the function table.
RS-485 connector (manufactured by 3M)
Accessory35505-6200-A00 GF (1 piece)-1-

Setting The key to move a digit.

Weighing Press and hold the key to turn off the display in weighing mode.
Power Supply Connector

OFF+24 V ....................... DC +24 V terminal.
0 V ............................ DC 0 V terminal.
FG (SHLD/SLD) ........ Ground terminal.
(Connector shields of all are connected inside with FG. )3.2.

Sensor Terminals of Load Cell

SIG- ....... The (-) input terminal of signal that is outputtedfrom load cell.
SIG+ ....... The (+) input terminal of signal that is outputtedfrom load cell.
EXC- ...... The (-) output terminal for load cell excitation
voltage (-).
SEN- ...... The (-) input terminal for sensing input (-). (When performing the 4-wireconnection, connect between EXC- and SEN-.)
SEN+ ...... The (+) input terminal for sensing input (+). (When performing the 4-wireconnection, connect between EXC+ and SEN+.)
EXC+ ...... The (+) output terminal for load cell excitation voltage (+).
SHLD ...... Connect shield of sensor cable.
Connections
When connecting and removing the cables, push the buttons with a driver etc.
We recommend use of rod type crimp terminals for the tips of cables.
Push button to pull out the cable.
Rod type crimp terminal

Load cell cable
Load cell tag

Power cable

3.3.

Control I/O, Standard Serial Output, RS-485 and Micro-B USB

Terminals of control I/O are isolated from load celland power supply (POWER).
Supply D.C. +24 V between PWR+24V terminal andCOM terminal.
(MDR connector with 20 pins, manufactured by 3M).
Standard serial output (C.L.) circuit is isolated from otherterminals.
(MDR connector with 20 pins, manufactured by 3M.)
For the RS-485, use a power clamp connector (A type)manufactured by 3M.

Press the key to turn on the display in standby.

Setting The enter key
Weighing The function key
Setting The escape key+

Weighing Proceeds to the function mode from the weighing mode.

+

Setting Proceeds to the check mode from the function mode.

+

OFF

3.6.

Operation Mode

+

)
)

+
)
The mode to calibrate zero point and span of the AD-4430R by calibration weight or input
value.

Calibration

The AD-4430R measures the voltage of the load cell and displays it. Calibration corrects
the signal from the load cell to convert into mass correctly.
Specify "decimal point position ()", "minimum division ()" and "weighing
capacity ()" in function mode.
※ Calibrate (adjust) "input voltage at zero ()", "span calibration input voltage ()"
and "weight against span calibration input voltage()" using the "span calibration usingmass ()" in calibration mode. These items can be also inputted using "digital span" infunction mode.
※ Perform stable measurement in the calibration to prevent measurement error.
※ During a stable measurement, theLED lights.
※ The flashing decimal point means "no weighing value" in calibration mode.
※ Whenand a number are displayed, an error has occurred.
Refer to "Calibration Errors" for details.
※ Before the calibration, allow the AD-4430R at least 10 minutes to warm up to avoid
temperature drift (change).
4.1.

Span Calibration using Mass ()

Preset a unit, decimal point, minimum division and weighing capacity in function mode.
The span calibration is performed using mass of the weighing capacity.
Step 1 Turn off the display by pressing and holding thekey, then press thekey
and thekey at the same time.
will display indicating calibration mode.
Step 2 Press the

key to enter calibration mode.
is displayed. When returning to weighing mode, press theUse standard Micro - B USB connector for USB so thatthe function settings can be read and written.

-2-+

The mode to check the AD-4430R.
Calibration mode ............................................ (When display is turned off,

4.

-3-

)

Step 1

Proceeds to the calibration from standby (at OFF mode).

Function mode ............................................................. (In weighing mode,
The condition of the AD-4430R can be updated and be stored.
Check mode .................................................................. (In function mode,

Digital Linearization (Digital linearization is the non-linearity compensation function that can rectify or
reduce linearity deviation between zero point and weighing capacity.
Up to four points can be specified except zero. (Refer to)Relationship of points : Zero =<<<<The high-order correction curve is used so that zero point and individual points
are arranged in a straight line.
Digital linearization includes span calibration.

Setting The key to select parameter or increase number.
3.1.

Span Calibration

4.2.

Weighing "The tare key" that displays zero for net weighing.

Pull down when removing.

Cautions During Use

The AD-4430R is a precision instrument that measures micro-volt output from loadcell. Prevent noise sources such as power lines, radios, electric welders or motors
from affecting the instrument.
Do not disassemble the AD-4430R.

Function
The function key works by selected function at.
Weighing
In the factory setting, select total weight or net weight.
Weighing "The zero key" to perform the zero operation.

3.3. Control I/O andStandard serial output

Vent

Mode

Setting The escape key

3.1. Power supply connector

This manual describes how the product works and how to get the most out of
it in terms of performance. Read this manual thoroughly before using the
product and keep it at hand for future reference.
Product specifications are subject to change without any obligation on thepart of the manufacturer to notify of changes.
This manual is subject to change without notice at any time to improve theproduct. No part of this manual may be photocopied, reproduced, ortranslated into another language without the prior written consent of the A&D
Company, limited.
Do not attempt to repair, modify or disassemble the product. Doing so willvoid the warranty.

.

This LED works by selected function at

3.3. RS-485 connector

1WMPD4003454B

2.

LED lights when the current weighing value is stable.

Gross :

3.3. Micro-B USB
connector

URL: http://www.aandd.jp/

1.2.

LED lights when the hold function operates.

Stable :Main display

3.2. Sensor terminals of
load cell

Refer to the instruction manual on the A&D home page.

1.1.

Hold :

Description

3.5. Key switches

Zero Calibration

Step 3 Press the
key to display.
When skipping zero calibration, press the
key and proceed to step 5.
Step 4 Confirm that the
LED is lit and press the
key. Thenis displayed for 2 seconds. When canceling span calibration andreturning to weighing mode, press the
key twice.

LED
Guide for DIN rail

4.1.1.

3.4. Status Indicators

Panelskey.

Turn off the display by pressing and holding thekey, then press the
key and the
key at the same time.
will display indicating
calibration mode. Press the
key to display.
Step 2 Press the
key to selectand press the
key to enter
digital linearization.
Step 3of the zero point is displayed.
Step 4 While
LED is displayed, press the
key to store the weighing
value. Thenis displayed for 2 seconds.
Step 5 When displaying, press the
key to select a weight value.
Specify it using theandkey.
Step 6 Place the weight on the pan. While
LED is displayed, press the
key to store the weighing value. Thenis displayed for 2 seconds.
Step 7is displayed. Repeat the same operation as Step 5 and Step 6 at
the second point.
Step 8is displayed. Repeat the same operation as Step 5 and Step 6 at
the third point.
Step 9is displayed. Repeat the same operation as Step 5 and Step 6
at the fourth point.
Step 10is displayed. Press the
key to store new parameters into
nonvolatile memory (FRAM) and display.
Step 11 Press the
key to return to weighing mode. Remove all weights fromthe pan.
4.3.
Display

Calibration Errors (

)

Cause
The display resolution(maximum capacity / minimum
division) exceeds the specified
value.

Treatment
Make the minimum division greater ormake the weighing capacity smaller. The
specified value depends on specificationsof the weighing system.
Check the load cell rating andVoltage at zero calibration
exceeds in the positive direction. connection. When nothing is wrong withthe rating and connection, adjust the loadcell output. When the load cell or A/D
Voltage at zero calibration
exceeds in the negative
converter may be the cause of error,
direction.
confirm this by using the check mode.
The value of the calibration
weight exceeds the maximum
capacity.
Use an appropriate calibration weightand calibrate again.
The value of the calibration
weight is less than the minimum
division.
The load cell sensitivity is not
Use a load cell with higher sensitivity or
sufficient.
make the minimum division greater.
Voltage at span calibration is less
Check the load cell connection.
than voltage at the zero point.
The load cell output voltage is too
Use a load cell with a greater rating or
high when the mass of
make the weighing capacity smaller.
maximum capacity is weighed.

-4-

5. Function Mode

Input voltage at zeroThe function mode stores parameters to control the weighing module.
The parameters are stored even without power supplied.
5.1.

Span input voltage

Summary........... Calibration function........... Linearity adjustment function........... Basics function........... Hold function........... Weighing sequence program........... Flow rate function........... Control I/O function........... Standard serial output function........... RS-485 function※ When only a numerical value is displayed, the decimal point flashes to distinguishthat from a weighing value.
5.2.
5.2.1.

Select Modes Under Function Mode.... Proceeds to function mode from the weighing mode.
+........... Selects a type of select mode (3 upper figures).
....... Enters a selected mode.
........... Selects an item under the selected mode (2 lower figures).
....... Enters the item.
....... Stores parameters and returns to weighing mode.
Change Value.......... Moves selected digit.
........... Changes numerical value.
....... Activates (store) value and returns to select mode.
....... Deactivates value and returns to select mode.
Function Table

Calibration Function (Item & Function
Unit

Gravity acceleration of the place where the scale is being used.
Gravity acceleration of use
9.7500 to 9.8000 to 9.8500
Scale: 0.0001 m/s2
place
Suppression of the holdfunctionto5.3.2.

Item & Function
Key switch disable

)

1: g

2 : kg

3: t

4: N

5: kN

Decimal point (D.P.) position.
Decimal point position 0 : 0
1 : 0.0
2 : 0.00
3 : 0.000
4 : 0.0000
Minimum division of weighing value.
Minimum division
1 :1
2:2
3:5
4 : 105 : 206 : 50Measurement can be displayed up to +8 digits from capacity. ※1
Weighing capacity
1 to 70000 to 99999
key (zero key) works. Deviation from
The range that thethe calibrated zero point [%].
0 to 2 to 100
Zero range
for zero tracking.
Used with
0.0 to 5.0
Zero tracking time Scale: 0.1 sec.
for zero tracking.
Used with
0.0 to 9.9
Zero tracking width Scale: 0.1 digit
Used withfor stability detection.
Stability detection time Scale: 0.1 sec.
0.0 to 1.0 to 9.9
for stability detection.
Used with0 to 2 to 100
Stability detection width Scale: 1 digit

key function

Display refresh rate

display

Tare and zero operation when unstable
Tare and zero at unstable
0 : Disables both functions.
1 : Enables both functions.
weight value
Tare when the grossweight is negative
Output when out ofrange and unstable
Exceeding negative
gross weight

Tare when the gross weight is negative.
0 : Disables tare.
1 : Enables tare.
0 : Disables output.

Digital filter 1

1 : Enables output.

To judge when the negative gross weight is exceeded.
1 : Gross weight < -99999
3 : Gross weight < -19 digits
2 : Gross weight < -Capacity

To judge when the negative net weight is exceeded.
Exceeding negative net
1 : Net weight < -99999
2 : Net weight < -Capacity
weightSelect whether or not to clear the zero value.
Clear the zero value
0 : Disable
1 : Enable
Select whether or not to perform zero setting when power isZero setting when power turned on.
0 : Disable
1 : Enable
is turned on-5-

Digital Filter 2

Hold function-99999 to 10 to 99999-99999 to -10 to 99999
1 : Gross weight

2 : Net weight

Descriptions, Range & Factory settings
Each digit corresponds to a key switch. Only available in weighing mode.
4th 3rd 2nd 1st digit
0 : Permission
1 : Prohibition
0000 to 1111
0 : None
7: Zero clear
1 : Manual print command 8: Weighing start / Pause / Restart
2 : Hold
9: Actual free fall input
3 : Operation switch 1
10: One shot, Small flow
4 : Operation switch 2
11: Sequence flow rate monitor
5 : Display exchange
12: mV/V monitor
6 : Tare clear
13: Digital filter 2
2 : 10 times/sec.

3 : 5 times/sec.

0 : None
11 : Over
1 : Zero tracking in progress 12 : OK
2 : Alarm
13 : Under
3 : Display operation switch 14 : Fullstatus as on or off
15 : Weighing end
4 : Near-zero
16 : In weighing sequence
5 : HI output
17 : Weighing sequence, error
6 : OK output
18 : Normal batch/Loss-in-weight, Identification
7 : LO output
19 to 24 : State of Coil IN 1 to 6
8 : Large flow
25 to 32 : Setting of Coil OUT 1 to 8
9 : Medium flow
10 : Small flow
Selects a cutoff frequency. ※3
0 : None
6 : 20.0 Hz
12 : 2.8 Hz
1 :100.0 Hz
7 : 14.0 Hz
13 : 2.0 Hz
2 : 70.0 Hz
8 : 10.0 Hz
14 : 1.4 Hz
3 : 56.0 Hz
9 : 7.0 Hz
15 : 1.0 Hz
4 : 40.0 Hz
10 : 5.6 Hz
16 : 0.7 Hz
5 : 28.0 Hz
11 : 4.0 Hz
Selects a cutoff frequency.
0 : None
6 : 20.0 Hz
12 : 2.8 Hz
18 : 0.40 Hz
1 : 100.0 Hz
7 : 14.0 Hz
13 : 2.0 Hz
19 : 0.28 Hz
2 : 70.0 Hz
8 : 10.0 Hz
14 : 1.4 Hz
20 : 0.20 Hz
3 : 56.0 Hz
9 : 7.0 Hz
15 : 1.0 Hz
21 : 0.14 Hz
4 : 40.0 Hz
10 : 5.6 Hz
16 : 0.7 Hz
22 : 0.10 Hz
5 : 28.0 Hz
11 : 4.0 Hz
17 : 0.56 Hz
23 : 0.07 Hz
1 : Normal hold2 : Peak hold

3 : Averaging hold

Item & Function
FinalPreliminary
Optional preliminary
Over
Under

5.3.7.

Item & Function
IN 1
IN 2
IN 3
IN 4
IN 5
IN 6
OUT 1

OUT 3

Descriptions, Range & Factory settings
※1
※1
※1

OUT 4

-99999 to 0 to 99999

OUT 5-99999 to 0 to 99999

OUT 6-99999 to 0 to 99999

※1
※1

OUT 8

-99999 to 0 to 99999

OUT 1
OUT 2
OUT 3
OUT 4
OUT 5
OUT 6
OUT 7
OUT 8

※1

2 : In synchronization with weighing end

Wait for the weight 0 : Disablevalue to be stable before
the judgment

1 : Enable

Flow timeout time
Weighing start input
delay time

OUT 7-99999 to 0 to 99999

OK/Over/Under output 1 : Always
timing

0 : Disable

5.3.8.

Serial data

Baud rate
5.3.9.

A period of weighing sequence. 0 : Not used
Scale: 1 sec.
Scale: 0.1 sec.

Item & Function

Large flow comparison disable time Time for preventing gate from malfunctioning due tovibration when opening and closing the gate.
Medium flow comparison disable time Scale: 0.1 sec.
0.0 to 60.0
Small flow comparison disable time
Waiting time between closing small flow gate and outputting comparison.
Judging delay time Scale: 0.1 sec.
0.0 to 0.1 to 60.0
0.0 : Until the next weighing start.
Weighing end output time Scale: 0.1 sec.
0.0 to 60.0

1 : Inverting output

1 : 600 bps)

2 : 2400 bps)

Baud rate

Descriptions, Range & Factory settings
5 : Modbus RTU
6 : Interval output at 100 times/sec.
7 : Interval output at 200 times/sec.
8 : Interval output at 500 times/sec.
5 : 9600 bps
7 : 38400 bps
6 : 19200 bps
8 : 115200 bps

Parity0 : None

1 : Odd

Stop bit length

1 : 1 bit

2 : 2 bits

Terminator

1 : CR

2 : CR LF

Slave address

0 : None

1 to 99

Communication mode

0.00 to 6.00

-7-

2 : Non inverting output

Descriptions, Range & Factory settings
1 : Weighing display
3 : Net
5 : Gross / Net / Tare
2 : Gross4 : are1 : Stream
3 : Manual print
2 : Automatic print

RS-485 Function (0 to 600
0.0 to 60.0

Descriptions, Range & Factory settings
0 : Not used
18 : Normal batch /1 to 6 : Reserved internally
Loss-in-weight exchange 0 to 7 to 28
7 : Zero
19 : Actual free fall input
8 : Tare
20 : One shot small flow 0 to 8 to28
9 : Hold
21 : Full open
10 : Gross / Net exchange 22 : Zero clear
0 to 28
11 : Diagnose
23 : Tare clear
12 : Print command
24 : Operation same as a F key 0 to 28
13 : Weighing start
25 : Prohibit update of flow rate 1
14 : Pause
26 : Prohibit update of flow rate 2 0 to 28
15 : Restart
27 : Initialize flow rate 1
28 : Initialize flow rate 2
16 : Emergency stop
0 to 28
17 : Error reset
0 : Not used
25 : Small flow
0 to 18 to 37
1 to 8 : Reserved internally 26 : Normal batch/
9 : Stability
1Loss-in-weight, Identification
10 : Over capacity
27 : In weighing sequence 0 to 9 to 37
11 : Net display
28 : Weighing end
12 : During tare
29 : Weighing sequence error 0 to 37
13 : Hold
30 : In weighing (ON)14 : Hold busy
31 : In weighing (1 Hz)
0 to 37
15 : HI output
32 : In weighing (50 Hz)
16 : OK output
33 : Alarm
0 to 37
34 : Output operationswitch is
17 : LO output
18 : Near-zero
111on or off
19 : Full
35 : Approximate flow rate value 0 to 37
20 : Over
111of flow rate 1
21 : OK
36 : Approximate flow rate value 0 to 37
22 : Under
1of flow rate 2
23 : Large flow
37 : Remote I/O
0 to 37
24 : Medium flow

Standard Serial Output Function (Item & Function

Communication mode

1 : Enable)

Control I/O Function ()-99999 to 0 to 99999
0 : No used 2 : Loss-in-weigh sequence 3 : Specifying with control input
Weighing mode
1 : Normal batch sequence
4 : Specifying with Modbus RTU
0 : Disable
1 : Moving average of last four times
2 : Real time free fall compensation (fixed coefficient)
Automatic free fallcorrection
3 : Real time free fall compensation (updated coefficient)
Weighing end value is compensated automatically
Automatic free fall band when net weight is within (final value ± this band).
0 to 99999
Active free fall coefficient.
Active free fall coefficient Scale: 0.001 sec.
-99.999 to 0.000 to 99.999

Automatic tare atweighing start

10 ： according to calculation
11 ： interchange +/12 ： absolute value+/- flow rate 1

OUT 2
Weighing Sequence Program (One shot time for small Scale: 0.01 sec.
flow rate-6-Damping time of flow rate 1 Suppress shaking of flow rate.
The higher value setting, the less shaking.
Scale: 1 sec.
1 to 5 to 1000
Damping time of flow rate 2+/- flow rate 2)

Descriptions, Range & Factory settings
Time to calculate the average. 0.00 is not averaged.
Average time
Scale: 0.01 sec.
0.00 to 9.99
Waiting time to commence holding or averaging.
Start wait time
Scale: 0.01 sec.
0.00 to 9.99
The condition to commence holding or averaging.
Condition of automatic 0 : Not used
2 : Above the near-zerostart
1 : Above the near-zero, and stable
Release when control input of the hold terminal is falling.
Release using control input 0 : Do not release
1 : Release
Release after a set amount of time has passed. 0.00 is not averaged.
Release time
Scale: 0.01 sec.
0.00 to 9.99
Release when fluctuation from the holding value exceeds a set
value. ※1
Release using
fluctuation range
0 : Continue
0 to 99999
Release when the weighing value is in the near-zero range.
Release at near-zero 0 : Do not release
1 : Release
5.3.5.

1 ：Digital filter 1
2 ：Digital filter 2

Filter of flow rate 2-99999 to 99999

Hold Function ()
Descriptions, Range & Factory settings

Filter of flow rate 1※1

Free fall)

1 : 20 times/sec.

Item & Function※1

Lower limit value
Comparison mass ofupper and lower limit

Flow Rate Function (2 : Net weight

Item & Function)

5.3.6.

※1

5.3.4.

Reserved internally

Basics Function (1 : Gross weight

Full

Descriptions, Range & Factory settings
Number of adjustment point. If 0, 1 or 2 is selected, this linearization
Number of input points is not used.
0 to 5
Input voltage for linear-zero input.
Linear-zero
Scale: 0.0001 mV/V
-7.0000 to 0.0000 to 7.0000
The setting value of weight for linear 1 input. ※1
Setting value for linear 1
0 to 99999
The span voltage between linear-zero and linear 1 input.
Span at linear 1
Scale: 0.0001 mV/V
0.0000 to 9.9999
The setting value of weight for linear 2 input. ※1
Setting value for linear 2
0 to 99999
The span voltage between linear-zero and linear 2 input.
Span at linear 2
Scale: 0.0001 mV/V
0.0000 to 9.9999
The setting value of weight for linear 3 input. ※1
0 to 99999
Setting value for linear 3
The span voltage between linear-zero and linear 3 input.
Span at linear 3
Scale: 0.0001 mV/V
0.0000 to 9.9999
The setting value of weight for linear 4 input. ※1
0 to 99999
Setting value for linear 4
The span voltage between linear-zero and linear 4 input.
Span at linear 4
Scale: 0.0001 mV/V
0.0000 to 9.9999
5.3.3.

Upper limit value

1 : Prohibition.

Linearity Adjustment Function (Descriptions, Range & Factory settings
0 : Not used

0 : Permission.

Comparison mass atnear-zero-99999 to 10 to 99999

OUT※1 Decimal point depends on.
※2 When "span calibration using mass ()" is performed by the input voltage from theload cell in the calibration mode, "input voltage at zero ()", "span calibration input
voltage ()" and "weight against span calibration input voltage()" change.
※3 If pressing the
key while displayingor, the current weighing value
can be monitored. Press the
key again to return to function mode.
5.3.1.

Gravity acceleration of the place where the scale is calibrated.
Gravity acceleration of
Scale: 0.0001 m/s2
9.7500 to 9.8000 to 9.8500
the calibration place

Item & Function

Operations and Types

5.3.

The calibration weight value corresponding to the input voltage at. ※1 ※2
1 to 32000 to 99999※1
Near-zeroIN

5.2.2.

Weight against span
input voltage

Input voltage from a load cell at zero. ※2
Scale: 0.0001 mV/V
-7.0000 to 0.0000 to 7.0000
Input voltage from a load cell at span. ※2
Scale: 0.0001 mV/V
0.0100 to 3.2000 to 9.9999-8-2 : Even