AD-4430B

with BCD Output
DIN Rail Weighing Module

1WMPD4002678D

This manual and Marks
All safety messages are identified by the following, “WARNING” or“CAUTION”, of ANSI Z535.4 (American National Standard Institute: Product
Safety Signs and Labels). The meanings are as follows:
WARNINGA potentially hazardous situation which, if not avoided,
could result in death or serious injury.

CAUTION

A potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.

This is a hazard alert mark.
This manual is subject to change without notice, at any time, to improve theproduct.
The contents of the product specifications and this manual are subject tochange without any obligation on the part of the manufacturer.
Under the copyright laws, the software (program) described in this manual iscopyrighted, with all rights reserved.
The software may be installed into one computer and may not be installed
into other computers without the prior written consent of A&D Company,
Limited. Copying includes translation into another language, reproduction,
conversion, photocopy and offer or loan to another person.

2014
All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, ortranslated into any language in any form by any means without the written
permission of A&D Company, Limited.

Contents
1.

Compliance ................................................................................................................................. 6
1.1.
Compliance with FCC rules .................................................................................................. 6
1.2.
Compliance with European Directives ................................................................................. 6
1.3.
Precautions For Safety Use .................................................................................................. 6

2.

Outline and Features .................................................................................................................. 83.

Specifications .............................................................................................................................. 9
3.1.
Analog Part (Load cell Input, A/D Converter) ....................................................................... 9
3.2.
Display And Keys ................................................................................................................... 9
3.3.
General ................................................................................................................................... 9Interface............................................................................................................................ 9
Weighing Function .........................................................................................................10
General...........................................................................................................................10
Accessories ....................................................................................................................10
Dimensions .................................................................................................................... 11
3.4.
Names (The Front Panel And Rear Panel ) .......................................................................12

4.

Installing The Module................................................................................................................13
4.1.
Conditions To Install The Module ........................................................................................13
4.2.
Power Supply .......................................................................................................................13
4.3.
Connecting Load Cell Cable ...............................................................................................14
4.4.
Verifying Load Cell Cable ....................................................................................................15

5.

Operations .................................................................................................................................16
5.1.
General Functions................................................................................................................16
Zero Adjustment.............................................................................................................16
Zero Tracking .................................................................................................................16
The Tare Function ..........................................................................................................16
Clearing The Tare Value And Zero Operation..............................................................17
Customizing The Function Of the F Key ......................................................................17
Customizing The Function Of the x Display.................................................................18
Memory Backup.............................................................................................................18
Near-Zero Detection ......................................................................................................18
Upper Or Lower Limit Detection Function....................................................................18
The Hold Function .........................................................................................................19
5.2.
State Diagram And Operation Switches.............................................................................20
State Diagram ................................................................................................................20
Operation Switches .......................................................................................................21
5.3.
Calibration.............................................................................................................................22
Outline ............................................................................................................................22
Calibrating With A Weight ()............................................................................23
Gravity Acceleration Correction ....................................................................................24
Digital Linearization........................................................................................................25
The Actual Load Linearization Function () ....................................................26
The Calibration Function () .............................................................................27

AD-4430B

-3-

5.4.

The Linearization Function ()........................................................................31
Error Codes For The Calibration...................................................................................32
Adjustment Of The Loadcell Output .............................................................................32
General Functions................................................................................................................33
The Procedure To Store New Parameters ..................................................................33
The Adjustment Of The Digital Filter.............................................................................34
The Basics Function ()....................................................................................35
The Hold Function () .......................................................................................36
The BCD Function ().......................................................................................37

6.

Interface .....................................................................................................................................38
6.1.
The Parallel BCD Output.....................................................................................................38
Timing Chart Of The BCD Output ................................................................................38
Terminals Of The BCD Output......................................................................................38
The State Of The BCD Output......................................................................................38
Positive Logic And Negative Logic ...............................................................................39
I/O input and I/O output .................................................................................................39

7.

Maintenance..............................................................................................................................40
7.1.
Error Messages....................................................................................................................40
7.2.
Check Mode .........................................................................................................................40
Entering The Check Mode ............................................................................................40
Verifying The Switch Operation ....................................................................................41
Checking The BCD Output ...........................................................................................41
Monitoring The A/D Converter ( For Load cell Output)................................................41
Monitoring The Internal Value .......................................................................................41
Monitoring The Program Version..................................................................................41
Monitoring The Serial Number......................................................................................41
Monitoring The Checksum Of The Program ...............................................................41
Monitoring The Checksum Of An Internal FRAM........................................................41
Displaying Function Parameters For The Calibration () ..............................41
7.3.
Initializing Parameters..........................................................................................................42
Initializing Mode For RAM And Function Parameters .................................................42
Initializing The Whole Data............................................................................................42
7.4.
Verifying The Load Cell Connections ( DIAGNOS ) ..........................................................43
Guideline To Verify The Load Cell Connections ..........................................................43
The Operation With The BCD Input .............................................................................43
Verifying Load Cell Connections with Switch Operation .............................................44
Display and Output of Check Results ..........................................................................44
7.5.
Verifying The Load Cell Connections Using Multimeter....................................................45
Check List Of The Load cell Connections....................................................................45
7.6.
The Parameter List For The Function List..........................................................................47
The Calibration Function () .............................................................................47
The Linearization Function () .........................................................................49
The Basics Function ()....................................................................................49
The Hold Function () .......................................................................................51
The BCD Function ().......................................................................................51-4-

AD-4430B

Illustrations
Illustration 1 Dimensions...................................................................................................................................11
Illustration 2 Front panel & rear panel............................................................................................................ 12
Illustration 3 Mounting the module ................................................................................................................. 12
Illustration 4 Wiring the connectors ................................................................................................................ 13
Illustration 5 Load cell connection .................................................................................................................. 14
Illustration 6 Peak hold / Averaging hold ....................................................................................................... 19
Illustration 7 State diagram.............................................................................................................................. 20
Illustration 8 Gravity Acceleration Graph....................................................................................................... 25
Illustration 9 Digital linearization ...................................................................................................................... 25
Illustration 10 Load cell output adjustment ................................................................................................... 32
Illustration 11 Wire Name of Load Cell.......................................................................................................... 43
Illustration 12 Connection Check of Load Cell............................................................................................. 45

AD-4430B

-5-

1.

1.1.

Compliance

Compliance with FCC rules

Please note that this equipment generates, uses and can radiate radio frequency energy.
This equipment has been tested and has been found to comply with the limits of a Class A
computing device pursuant to Subpart J of Part 15 of FCC rules. These rules are designed toprovide reasonable protection against interference when this equipment is operated in acommercial environment. If this unit is operated in a residential area it may cause someinterference and under these circumstances the user would be required to take, at his own
expense, whatever measures are necessary to eliminate the interference.
(FCC = Federal Communications Commission in the U.S.A.)

1.2.

Compliance with European Directives

This appliance complies with the statutory EMC (Electromagnetic Compatibility) directive
2004/108/EC and the Low Voltage Directive 2006/95/EC for safety of electrical equipment
designed for certain voltages.
Note: The displayed value may be adversely affected under extreme electromagnetic influences.

1.3.

Precautions For Safety Use

Before use, confirm the following articles for safe operation.
Grounding The Module
Ground the module to the DIN rail with certainty. Separate this earth ground line from others,
like ground line of a motor, inverter or a power source. Unless the indicator is grounded, it
may result in receiving an electric shock, cause operation error or catch fire.
Proper Power Source And Power Cable
Confirm the AC voltage, frequency and power tolerance of the power cable. If the voltage
range of the cable is lower than the power line voltage, it may cause leakage or catching fire.
Use pole compression terminals to connect the power cable to the terminals.
Fuse
The fuse is installed to help prevent the module from catching fire. The module is equippedwith many safety circuits. Therefore, the fuse is not damaged in normal operation. If the fuse
is damaged, do not replace it, contact your local A&D dealer. This trouble may have beencaused by strong electric discharge.
Splashing Water
The module is not water resistant.
Flammable Gas
Do not install the module where flammable gas is present.
Heat Radiation Of The Module
Space out instruments to radiate heat sufficiently. Use a cooling fan to keep the operating
temperature of the module within specifications.
AD-4430B is covered with a protective transparent-resin cover. After the installation iscomplete, take off the protective cover prior to turning on the AD-4430B. Heat damage may-6-

AD-4430B

be caused if you do not remove the protective cover.
The protective cover is for preventing wire chips when you will install and wire soplease do not take off the cover until complete the installing and wiring.

AD-4430B with a protective cover

How to remove the protective cover

Data communication with RS-485 (Modbus
RTU)

AD-4430B
Protective cover1

Pullthis way
Protective coverAD-4430B

2

Take off the two tabs on the back of
the protective cover.

AD-4430B-7-

2.

Outline and Features

The AD-4430B has the following features.
The AD-4430B is a weighing indicator that amplifies signals from a load cell, converts it todigital data and displays it as a mass value.
This indicator has the following performance :Input sensitivity : ............................ 0.15 µV / d (d = minimum division)
Display resolution : ........................ 99,999 d in maximum
Sampling rate : ............................... 1000 times/second
Input voltage range : ...................... -35 mV to +35 mV (-7 mV/V to +7 mV/V)
The calibration using gravity acceleration correction :The function compensates for weighing error due to the difference of gravity acceleration
between the calibration place and the measurement place.
The digital linearization function :The digital linearization function can rectify and reduce the linearity deviation using weighing
points during the zero and capacity setting. Up to four weighing points can be specified. The
high-order correction curve is used between each points.
The digital span mode :Simplified calibration is possible using numerical input, even without an actual load.

-8-AD-4430B

3.

3.1.

Specifications

Analog Part (Load cell Input, A/D Converter)

Input sensitivity

0.15 µV/d or greater (d = minimum division)

Input voltage range-35 mV to +35 mV (-7 to +7 mV/V)

Zero range-35 mV to +35 mV (-7 to +7 mV/V)

Load cell excitation voltage(Load cell drive capacity)

5 VDC ±5%, 60 mA with remote sensing capability(Maximum 4 x 350 Ω load cells)

Temperature coefficientZero±0.02 μV/°C Typ. ±0.1 μV/°C Max.

Span

±3 ppm/°C Typ. ±15 ppm/°C Max.

Non-Linearity

0.005% of full scale Max.

A/D conversion method

Delta-sigma method

A/D resolution countApproximately 16,000,000 counts

Display resolution

99,999 d Max. (d = minimum division)

Sampling rate

1000 times/second

3.2.

Display And Keys

Display element

Measurement
display

Measurement display
Status indicators

5 - digit 7-segment red LED
6 red LEDs

Numerical display
Decimal point
Overflow display

Switches between NET and GROSS
Selectable decimal places (101, 102, 103, 104)
All the digits turn OFF. (When the polarity is negative,
the minus sign appears at the highest-order digit.)

Status indicators: GROSS, : NET, : HOLD, : STABLE, : ZERO,: Selectable from the function list of X display ().

Key switches

/ESC,

3.3.

(ZERO),(TARE),

GeneralInterface

BCD Output

MDR connector 36pins female typeBCD Output And I/O Output
Output circuit
Open collector transistor

I/O Input
Input circuit

DC contact input

Isolation

Photo coupler

Open voltage

Approx. 5 V

Output current

50 mA Max.

OFF current

0.1 mA Max.

Saturation voltage

0.5V Max. @50 mA

ON current

2 mA Min.

Threshold voltage

2V

Chattering suppression time 10 msec.
AD-4430B-9-

Weighing Function

Zero adjustment

Sets the gross weight to zero by pressing the(ZERO) key.
Selection of disable or enable for the operation when unstable.
The zero value is backup by FRAM.
Zero adjustable range : Can be set optionally in the range of 1 to 100% of theweighing capacity.

Zero tracking

Tracks the weight drift around the zero point to maintain zero.
Zero tracking time : 0.0 to 5.0 seconds Can be set optionally within the range
Zero tracking width : 0.0 to 9.9 d
Can be set optionally within the range

Tare

Sets the net weight to zero by pressing the(TARE) key.
The tare weight is backup by FRAM.
Tare range : Gross weight ≤ Weighing capacity

Turns ON the stabilization indicatorwhen the variables of the weight values per
sampling are within the set band in the set time.
Stability detection
Stability detection time : 0.0 to seconds Can be set optionally within the range
Stability detection width : 0 to 9d
Can be set optionally within the range
Digital filter

Cutoff frequency (-3 dB) range : 0.7 to 100 Hz

Near-zerodetection

Detects to place nothing on the weighing pan.

Comparator

Compares the measurement with these limits and outputs the results.

Hold function

Displays the measurement value held.
Select from normal hold, peak hold, averaging hold.

GeneralData backup
Power failure countermeasure

Zero value, tare weight, calibration, function parameters backup by
FRAM. (10 years or more)Power source

DC 24 V, +10%, -15%

Power consumption

Approximately 6 W Max.

Operating temperature
Operating humidity-10 °C to +50 °C,
85 %RH or less (no condensation)

Installation method

DIN rail mount

Mass

Approximately 180 g

Accessories
Item
Power source connector

Quantity
1

Model name
FMC1.5/2-ST-3.5- 10 -

AD-4430B

Dimensions

35.3

(2.5)

100

1.3
20°

28

A&D Company, Limited

110

5.5

39.4

34.5

36.1

Unit : mm
Illustration 1 Dimensions

AD-4430B- 11 -

3.4.

Names (The Front Panel And Rear Panel )Illustration 2 Front panel & rear panel

Main display
Status indicators
Key switches
Vent
Sensor terminalsof load cell
Guide for DIN rail
BCD connector
Power supply
connector
Hook for DIN rail

Pull down it when removing.
Vent

Guide for DIN rail

DIN rail

Illustration 3 Mounting the module- 12 -

AD-4430B

4.

Installing The ModuleThis section is explained for the environment to install the module and for the terminals of thepower source and load cell cable. Refer to each section of options for I/O interface.

4.1.

Conditions To Install The Module

The module is a precision electronic instrument. Handle it carefully.
The operating temperature is -10°C to +50°C.
Do not install the module in direct sunlight.

4.2.

Power Supply

Earth ground the module to prevent electrical shock or indicator malfunction.
If the module is not grounded, it may cause of an electric shock, or malfunction due to static electricity.
Before connecting the module to the power source, read the instruction manual thoroughly.
Do not connect the module to the power source before the installation is complete.
To avoid electrical shock, do not handle the power cable with a wet hand.
Earth ground the module. Do not share the ground line with other electrical power equipment.
The power requirement is 24 DCV, +10% to -15%.
Use a stable power source free from instantaneous power failure or noise.
To avoid a malfunction, do not share the power line with other devices.
The output voltage of a load cell is a very sensitive signal. Keep all electrical noise sourcesaway from the load cell and load cell cable.
Use shielded I/O cables. Connect the cable shield to the F.G. terminal or the module housing.
Ground terminal is connected internally with all connector shields.
Push buttons when connecting andremoving the cables.
Rod type crimp terminal
Shielded load cell cable

Refer to "The Conductor Specifications".

Accessory connector
Power cable
Press the button toremove & insert it.
Illustration 4 Wiring the connectors

The Conductor Specifications
Clamp range (typ.)AWG
Solder plated wire
Twisted wire
Rod crimp terminal
Rod crimp terminal with cover
Lead lengthAD-4430B

DIN 46228 Part 1
DIN 46228 Part 4- 13 -

0.13 mm2 to
AWG24 0.2 mm2 to
0.2 mm2 to0.25 mm2 to0.25 mm2 to
8 mm

1.5 mm2
AWG16
1.5 mm2
1.5 mm2
1.5 mm20.75 mm2

4.3.

Connecting Load Cell Cable

Shield Cable Connection

As a general rule, only connect the load cell cable's shield wire to the module's shieldterminal. This is because when there are multiple ground points, it becomes easier for noise
to occur as a result of a ground loop. However, when there are higher priorities than noise
prevention, such as explosion prevention systems or static electricity release routes, this rule
does not necessarily need to be followed.

Load Cell Terminal Connections
Two types of load cell connection are available: 6-wire connection and 4-wire connection.
For high precision and stable weighing, 6-wire connection is recommended.
Terminal No.
1
2
3
4
5
6
7

SIGSIG+
EXCSENSEN+
EXC+
SHLD

Terminal Name & Function
Load cell input (-)
Load cell input (+)
Load cell excitation voltage (-)
Sensing input (-)
Sensing input (+)
Load cell excitation voltage (+)
Shield6-wire connection to load cell (recommended)

4-wire connection to load cell (not recommended)
Illustration 5 Load cell connection- 14 -

AD-4430B

Type

Advantages
Disadvantages
The error is small evenwhen the load cell cable
6-wireis extended, a thin load
connection
Complicated wiringcell cable is used, or(recommended) multiple load cells areused.
The influence of theload cell cable
resistance worsens the
4-wiretemperature coefficient.
Simple wiring
connection
Prone to the influence ofthe contact resistance ofthe connector

Description
Use a 6-wire shieldedcable when a summingbox is used.

The error increases
when the load cell cableis extended or multiple
load cells are used.

Precautions to be taken when using the 4-wire connection:
If the 4-wire connection has to be used, please take the following measures.
Be sure to connect terminals EXC+(6) and SEN+( 5 ) and terminals SEN-(4) and EXC-(3).
When lengthening the load cell cable, try to use cable with a large cross-sectional area.
Also, keep the cable as short as possible.

4.4.

Verifying Load Cell Cable

When the load cell connection is complete, perform a connection check using the following
procedure.
Perform a visual check to ensure that the wiring is correct.
Turn the module on.
When calibration has not yet been carried out, the display value may be blank. However, as
long as there are no problems with the display, confirmation can still be carried out using
check mode.
Enter the check mode and check the load cell output value.
Refer to “7.2. Check Mode" to enter the A/D check mode.
Confirm that the displayed load cell output value matches the specified value. Normally thedisplayed value will be the load cell rated output value or less.
If an error occurs, refer to "7.4 Verifying The Load Cell Connections ( DIAGNOS )" or "7.5
Verifying The Load Cell Connections Using Multimeter".

AD-4430B- 15 -

5.

5.1.

Operations

General Functions
Zero Adjustment

Zero adjustment is a function to set the gross weight to zero.
It is performed by pressing the(ZERO) key.
The zero adjustment range is set in( Zero range ) and is expressed in percent of theweighing capacity with the calibration zero point as the center.
Zero adjustment is disabled, even within the zero adjustment range, when the A/D converter
overflow occurs.
A ZERO error is output if zero adjustment is not performed.
The zero value is stored in the non-volatile memory and is maintained, even if the power isdisconnected.
Clearing the zero value is performed using the
key assigned to clear the zero value.
Functions Related To Zero Adjustment( Zero range ) : A value between 0% and 100% can be specified.
( Tare and zero adjustment when unstable ) : The selection to enable or disable
tare and zero adjustment when unstable.
( Zero setting when power is turned on ) : The selection whether or not to performzero setting when power is turned on.

Zero Tracking
The zero tracking is a function to track the gross weight drift around the zero point to maintain zero.
The zero tracking time is set in( Zero tracking time ) and the zero tracking width is
set in( Zero tracking width ). When the gross weight drift is within the specified
ranges, zero tracking is performed automatically.
A ZERO error is not output even if zero tracking is not performed.
Functions Related To Zero Tracking( Zero tracking time ) : The value between 0.0 and 5.0 seconds can be specified.
( Zero tracking width ) : The value between 0.0 and 9.9 d can be specified.
(d = minimum division)

The Tare Function
Tare is a function to store the gross weight as the tare value and set the net weight to zero.
It is performed by pressing the(TARE) key.
The tare weight is stored in the non-volatile memory and is maintained, even if the power isdisconnected.
Clearing the tare weight is performed using the
key assigned to clear the tare weight.
Functions Related To The Tare Function( Tare and zero adjustment when unstable ) : The selection to enable or disable
tare and zero adjustment when unstable.
( Tare when the gross weight is negative ) : The selection to enable or disable
tare when the gross weight is negative.
- 16 -

AD-4430B

Clearing The Tare Value And Zero Operation
To clear the tare value and zero operation, hold the
In off mode, hold the(TARE) key and press the(TARE) key and turn on the module. Or:
key.

Customizing The Function Of the F Key
Assigns a function to the
key from the functions of(
key function) below :0: None1: Manual print command
2: Hold
3: Alternate switch
4: Momentary switch
5: Display selection
6: Clear the tare weight
7: Clear the zero value( Clear the zero value ) : Enable or disable clearing the zero value.
0: Disable
1: Enable
Alternate switch and momentary switch
By assigning these switches to thekey, the ON/OFF status of the
key can betransmitted to the master station. This is useful when building a network or performing
maintenance. The function of the x display can be specified by the
key and can bemonitored by the linked memory. These switches work as follows :Alternate switch
When pressing and releasing the switch once, the state of the switch is maintained.
Press the switch again to turn off or on.
Momentary switch
Only while the switch is being pressed, the switch is ON. When it is released, it is OFF.

AD-4430B- 17 -Customizing The Function Of the x Display
Assigns a function to the x display (a red LED) from the functions of
0: None
1: Zero tracking in progress
2: Alarm (Zero range setting error, over)3:
key status
4: Near-zero
5: HI output (Over the upper limit value)
6: OK output (Between upper and lower limit values)
7: LO output (Below the lower limit value)
8: State of SELECT input terminal (INPUT(17))
9: State of SELECT output terminal (OUTPUT(33))
key status
When alternate switch or momentary switch is selected at, the
The display turns ON when the
key is ON and turns OFF when the(x Display) below:

works.
key is OFF.

Memory Backup
Zero value, tare weight, calibration data and function data are written into non-volatilememory (FRAM). The FRAM does not require batteries. The data retention period is 10
years. Therefore, this module does not equipped the backup battery.

Near-Zero Detection
Near-zero detects whether an object has been placed on the weighing pan.
The near-zero state is defined when the weighing value is within the preset value for the nearzero range.
Related Functions( Near-zero ): The value of near-zero.
( Near-zero comparison weight ): Selection of the gross weight or net weight tocompare the value of near-zero.
1: Gross weight
2: Net weight

Upper Or Lower Limit Detection Function
This is a function to detect whether the weighed value is above an upper limit value or below a
lower limit value.
Functions Related To The Detection Function(Upper limit value) or(Lower limit value) : A comparative upper or lower
limit value can be set.
(Comparison mass of upper and lower limit) : Gross weight or net weight to becompared with the upper or lower limit value can be selected.
(Output logic of upper and lower limit) : Positive logic or negative logic to output theupper and lower limit can be selected.
- 18 -

AD-4430B

The Hold Function
There are three types of hold functions which can be used for different purposes.
Normal holdHolds the value displayed at the time the hold command was received.
Peak holdHolds the maximum value reached after the hold command was received.
The value will be refreshed if it increases again.
Averaging holdThis function averages weighing data over a certain period of time and then holds the result.
It is useful for measuring things that are difficult to weigh such as an animal that won’t settle
down, or for averaging out the weight of an object in an unstable state. In addition, it can
reduce the effects of breezes which the digital filter cannot eliminate.
Functions Related To The Hold Function(Hold function) : The type of hold function can be selected.
To set operating conditions for the hold function : Set the averaging time length, standby
time, or start and stop conditions withto. (Will not affect normal holds)

Peak holdStandard
state
Hold start command
Automatic start condition

Hold

Hold

Judgment startStandard
state

Hold cancellation command
Automatic cancellation condition

Averaging holdStandard
state
Hold start command
Automatic start condition

Averaging (Busy state)(Averaging time)
Averaging start- 19 -

Standard
state

Averaging finish Hold cancellationcommand
Automatic cancellation condition

Illustration 6 Peak hold / Averaging hold
AD-4430B

Hold

5.2.

State Diagram And Operation Switches
State Diagram

The nonvolatile memory always stores either OFF mode or other mode. It starts from the following
state depending on the mode that has been kept when the automatic power is on.
OFF mode ( standby ) : Starts from OFF mode.
Other mode
: Starts from Weighing mode.
State diagram can be switched as follows.
Power onAutomatic power on after setting

Automatic power on
ON state
Weighing mode*2

display

Function mode

*3
Display*1display
display

Check mode
Initialization mode
Self-check mode

OFF state
OFF mode( standby )

*1
*2
*3
*4

*4

display

display
key to selectdisplay
display

Calibration using actual
load
Function mode related tocalibration

display
display

Digital linearization mode
Function mode related todigital linearization mode
All data initialization mode

Illustration 7 State diagram- 20 -

AD-4430B

Operation Switches
Key

State

Function and Use

Weighing mode

The display toggles between gross and net in factory setting.
The function key to select a function or use.

Setting mode

The

Weighing mode

The zero key.

Setting mode

The key to change the selected item or move a flashing figure.

Weighing mode

The tare key.

Setting mode

The key to select a parameter or increase a number.

Weighing mode

Hold to turn the module off.

key.

OFF state (Standby) The key to turn the module on.
Setting mode

The key to store new settings.

Weighing mode

The function key (Setting mode

The return key or escape key.

Weighing mode

Proceed to the function mode from weighing mode.

+

Setting mode

Proceed to the check mode from function mode.

+

OFF state (Standby) Proceed to the calibration mode from OFF state ( Standby ).

+AD-4430B

key ) to selects function or use.

- 21 -

5.3.

Calibration
OutlineIn the calibration mode, the operation to relate the output voltage from a load cell to the mass
value and other operations directly related to weighing are performed.
Calibration is performed using a calibration weight.
Zero calibration : ................. Press
key when no load is applied.
Calibration with anactual load

Span calibration : ................ Enter the calibration weight value and place
the calibration weight.
When the module enters the mode of calibration with an actual load, the tareweight and the zero value will be automatically cleared.
Calibration is performed without an actual load, by numerical input of the loadcell output voltage (mV/V). Set the functions related to the calibration.
Input voltage at zero : ..........Numerical input of the load cell output at zero.

Digital span

Input voltage of span : .........Numerical input of the load cell output of span.
(Load cell output at full capacity - load cell output at zero)
Calibration weight value of span : ...........Numerical input of the calibration
weight corresponding to the input voltage of span.
( These value relate the input voltage of span and the weight value.)

The correction calculates and corrects for gravity acceleration if the location
Gravity acceleration
where the module was calibrated and the location where it is being used in are
correction
different.
Nonlinearity correction feature to correct weighing errors that occur halfway
between the zero point and weighing capacity. Up to 4 points can be input in
Digital linearization
addition to the zero point, and the intervals between each point will becalculated using curves.
The function stores basic parameters of the module such as the minimum
Function related to division and weighing capacity and other data directly related to weighing iscalibration
performed. It includes the parameters for digital span calibration, dual range or
gravity acceleration correction is also performed.
All data initialization

All the data such as zero value, tare weight, calibration data and function data
are initialized.

All the parameters in the calibration mode is stored in the FRAM.

- 22 -

AD-4430B

Calibrating With A Weight ()

The calibration function is performed using a calibration weight. When performing thecalibration for the first time, set(Decimal point position),(Minimum division)
and(Weighing capacity) to values necessary for the calibration.
Note To avoid drift caused by changes in temperature, warm up the indicator for ten
minutes or more before performing calibration with an actual load.
Step 1

Step 2In the OFF mode (Standby), Press thethe calibration mode and display+

key to enter to.

Press thekey to start the calibration and display
If returning to the weighing mode, press the
key.

.

Zero Calibration
Step 3Press thekey to display.
If zero calibration is not to be performed, press the
key andproceed to step 5. If you want to check the current weighing value,press thekey. When pressing the
key again,
is displayed.
Step 4

Wait for the stabilization ( LED ). Press thekey.
is displayed for approximately two seconds. If span calibration is
not performed, press twice thekey for returning to the weighing mode.

Span Calibration
Step 5Press thekey whenis displayed. The
calibration weight value (the current weighing capacity) is displayed
and the least digit of the value blinks. Correct the value using theandkey so as to be the value of the calibration weightused. If span calibration is not performed, press three times the
key for returning to the weighing mode.
Step 6

Place the calibration weight on the pan. Wait for the stabilization( LED ). Press thekey.
is displayed forapproximately two seconds.

Step 7
Step 8

Step 9

Exampleis displayed.
Press thekey.
is displayed and thecalibration data is stored in the FRAM memory.
The current state is the same as that of step 2. If returning to the weighing mode, press
the
key.
If
X is displayed, an error has occurred. Refer to “5.3.8. Error Codes For The
Calibration” to take some measures. X : error number.
The blinking decimal point means that the current value is not the weight value.

AD-4430B- 23 -

Gravity Acceleration Correction
When the scale (module) has been calibrated in the same place as it is being used, gravity
acceleration correction is not required.
A span error will appear if there is a gravity acceleration difference between the place where
the module has been calibrated and the place where it is being used. The gravity acceleration
correction calculates and corrects this span error by these gravity acceleration correction
values for both points (the place it was calibrated and the place it is being used in).
Note When the span is calibrated with actual load calibration, the gravity acceleration
correction settings are cleared, and the two gravity acceleration settings return totheir default values.
Functions Related To The Gravity Acceleration Correction(Gravity acceleration of place of calibration) : The gravity acceleration where themodule has been calibrated.
(Gravity acceleration of place of use) : The gravity acceleration where the module
is being used.

Gravity Acceleration Table
Amsterdam
AthensAuckland NZ
BangkokBirmingham
Brussels
Buenos Aires
Calcutta
ChicagoCopenhagen
CyprusDjakarta
Frankfurt
Glasgow
HavanaHelsinki
KuwaitLisbonLondon (Greenwich)
Los Angeles
Madrid

9.813 m/s2
9.800 m/s2
9.799 m/s2
9.783 m/s2
9.813 m/s2
9.811 m/s2
9.797 m/s2
9.788 m/s2
9.803 m/s2
9.815 m/s2
9.797 m/s2
9.781 m/s2
9.810 m/s2
9.816 m/s2
9.788 m/s2
9.819 m/s2
9.793 m/s2
9.801 m/s2
9.812 m/s2
9.796 m/s2
9.800 m/s2

- 24 -

ManilaMelbourne
Mexico City
Milan
New York
Oslo
OttawaParis
Rio de Janeiro
Rome
San Francisco
Singapore
Stockholm
SydneyTainanTaipeiTokyo
Vancouver, BC
Washington DC
Wellington NZ
Zurich

9.784 m/s2
9.800 m/s2
9.779 m/s2
9.806 m/s2
9.802 m/s2
9.819 m/s2
9.806 m/s2
9.809 m/s2
9.788 m/s2
9.803 m/s2
9.800 m/s2
9.781 m/s2
9.818 m/s2
9.797 m/s2
9.788 m/s2
9.790 m/s2
9.798 m/s2
9.809 m/s2
9.801 m/s2
9.803 m/s2
9.807 m/s2

AD-4430B

Illustration 8 Gravity Acceleration Graph

Digital Linearization
Even if zero and span points have been calibrated, weighing errors may occur between thezero point and weighing capacity. This is a corrective function designed to non-linearly correct
weighing errors.
It is possible to input up to four points in addition to the zero point.
The zero point and each input point will be corrected to put them in a straight line.
Areas between input points that could not be corrected completely with straight line correction
or with secondary correction will be corrected using a curved line derived from high-orderequations.
When the actual load input for digital linearization is performed, the calibrated data will be
refreshed using zero point and final input point data. It is not necessary to calibrate again.
If calibration is performed, the linearization data will not be updated.
Straight line correction
Before correction

Weighing value

ZeroHigh-order equation correction

1st

2nd
3rd
Mass value (Input point)

Illustration 9 Digital linearization
AD-4430B- 25 -

4th

The Actual Load Linearization Function ()

Set the digital linearization by loading/unloading masses.
Warm up the module for at least ten minutes to avoid the effects of temperature drift.
The input order should proceed from the smallest mass to the largest mass.
Step 1Press the+key to enter to the calibration mode anddisplay. Press the
key to start the calibrationand display. Selectusing thekey
and press the
key.

Step 2is displayed.
If monitoring the current weighing value, press thekey.
When pressing the
key again,
is display.

Step 3

Placed nothing on the pan and wait for the stabilization ( LED ).
Press thekey.
is displayed for approximately
two seconds.

Step 4is displayed.
If you want to check the current weighing value, press thekey.
When pressing the
key again,
is displayed.
Press thekey. The weight value (the current weighing
capacity) is displayed and the least digit of the value blinks.
Correct the value using theandkey so as to be theweight value used.

Step 5

Place the weight on the pan. Wait for the stabilization ( LED ).
Press thekey.
is displayed for approximately
two seconds.

Step 6is displayed. Repeat step 4 and step 5. The procedure
proceeds in order of→→.

Step 7

If finishing the input, proceed to step 8.
If you want to re-input the digital linearization, select the input point
key. All data following the new input point will beusing thecleared.

Step 8Press thekey.
is displayed and the inputteddata will be stored in the FRAM. At the same time, the calibrated
data is also refreshed. Press again the
key to return toweighing mode.

ExampleIf
X is displayed, an error has occurred. X : error number.
Refer to “5.3.8. Error Codes For The Calibration” to take some measures.
The blinking decimal point means that the current value is not the weight value.

- 26 -

AD-4430B

The Calibration Function (+)

Step 1Press thePress thekey to enter to the calibration mode and display
key to start the calibration and display.

Step 2

SelectStep 3

Select a desired function number using the
The current data is displayed.

Step 4

When changing data, two methods of parameter selection and digital input depending on
the function are available.

using thekey and press the

.

key.

key and press the

key.

Type

Description of method to change data
Only the available parameter is displayed and blinks.
Parameter selection
Select a number using the
key.
All the digits are displayed and a digit to be changed blinks.
Select a digit using the
key and
Digital inputchange the value using the
key.
After changing data, press the
key. The next function number is displayed.
When the value is not to be changed, press the ESC key to return to the function
number display.
Step 5Press the ESC key to store new data in FRAM and
Press again the ESC key to return to the weighing mode.

is displayed.

The blinking decimal point means that the current value is not the weight value.
If a data exceeding the available range is inputted,
is displayed and data iscanceled.

AD-4430B- 27 -

Function No.
Parameter
and range

Item name

Description

Default
value

Decimal point position of the weight value
0
0.000
0
0 to 0.0000
0.0
0.00000.00
Minimum division (d) of the weight value
1
101
Minimum division
1 to 502
20
550
Weighing capacity of the module.
Weighing is possible up to the value of this setting plus
70000
Weighing capacity 8 d. If the value exceeds this, overflow will occur and
1 to 99999
will not be displayed. The decimal point position is thesame as the setting of.
Range to enable zero adjustment by the(ZERO)
key Expressed as a percentage of the weighing
capacity with the calibration zero point as the center.
For example, if this is set to 2, the value in the range of2
Zero range±2% of the weighing capacity with the calibration zero
0 to 100
point at the center will be to zero. When a power-ON
zero is performed, the initial zero point will be thecenter.
Performs zero tracking using this setting in
combination with the setting of the zero tracking width
0.0
Zero tracking time
0.0 to 5.0. When 0.0, zero tracking will not be performed.
Unit : Second in 0.1 increments.
Performs zero tracking using this setting in
combination with the setting of the zero tracking time
0.0
Zero tracking width
0.0 to 9.9. When 0.0, zero tracking will not be performed.
Unit : d (minimum division) in 0.1 increments.
When= 1.0,= 4.5
Weight value
Zero tracking follows the weight
4.5 dvalue drifting around the zero point
and adjusts to display as zero.
Decimal point
position0d
1 second
Weight value
5.0 d
4.5 d
4.0 d
3.5 d
3.0 d
2.5 d
2.0 d
1.5 d
1.0 d
0.5 d
0.0 d

d = Minimum division = 1 digit
When= 1.0,= 4.5

Zero tracking functions when theweight value is drifting the range
shown in the graph.
When= 2.0,= 0.5

2 second

1 second- 28 -

AD-4430B

Function No.
Parameter
and range

0.0 to 9.9

0 to 9Item nameDefault
value

Description

Performs stability detection using this setting in
combination with the setting of the stability detection
Stability detection
1.0
band. When 0.0, stability detection will nottime
be performed. (Stable all the time) Unit : Second in
0.1 increments.
Performs stability detection using this setting in
combination with the setting of the stability detection
Stability detection
2time. When 0, stability detection will not be
width
performed. (Stable all the time) Unit : d (minimum
division).
Stability detection outputs the STABLE
signal when changes in the weightvalue are within a certain range duringa certain time.

Weight value

STABLE signal
Time

0 to 1

0 to 1

0 to 1

1 to 3

1 to 20 to 1AD-4430B

Tare and zero adjustment when the weight value is
Tare and zero
unstable.
adjustment when
0 : Disables both functions.
unstable1 : Enables both functions.
Tare when the gross weight is negative.
Tare when the gross
0 : Disables tare.
weight is negative
1 : Enables tare.
Standard serial output when the weight value
Output whenoverflows and is unstable.
overflow and
0 : Disables output.
unstable1 : Enables output.
To judge when the negative gross weight is exceeded.
Exceeding negative 1 : Gross weight < -99999
gross weight
2 : Gross weight < Negative weighing capacity
3 : Gross weight < -19d
To judge when the negative net weight is exceeded.
Exceeding negative
1 : Net weight < -99999
net weight
2 : Net weight < Negative weighing capacity
Select whether or not to clear the zero value.
Clear the zero value 0 : Disables.
1 : Enables.

- 29 -

1

1

1

1

1

1

Function No.
Parameter
and range

0 to 1-7.0000
to 7.0000
0.0001
to 9.9999

1 to 99999

Item name

Description

Default
value

Select whether or not to perform zero setting when
Zero setting when power is turned on.
0
power is turned on 0 : Disables.
1 : Enables.
Input voltage from a load cell at zero. Unit : mV/V.
0.0000
Input voltage at zero This value is determined in zero calibration during
the calibration with an actual load.
Input voltage from a load cell at span. Unit : mV/V.
This value and the value ofare determined 3.2000
Input voltage at spanin span calibration during the calibration with anactual load.
The input voltage at span for
displays theCalibration weight input voltage per this setting of weighing value.
corresponding to When performing digital span,,and 32000
Input voltage at spanare required. The decimal point position is
the same as the setting of.
Input voltage

0
NOTE:*1 Record the setting values of,the manual to prepare against a failure.

Displayed weightandin the “Setting List” at the end of*2 By changing the parameters of,and, “zero calibration” and “spancalibration” can be adjusted optionally. (Digital span accuracy approximately 1/5000. The
accuracy varies depending on the load cell output accuracy and the conditions of calibration.)
Except for an emergency, perform calibration with an actual load.
Gravity acceleration Gravity acceleration of the place of calibration.
9.7500of place of calibration Unit : in m/s2.
to 9.8500

9.8000

Gravity acceleration Gravity acceleration of the place where the scale is
9.7500of place of use
being used. Unit : in m/s2.
to 9.8500
0 : Enables.
Disable hold0 to 1
1 : Disables.

9.8000- 30 -

0AD-4430B

The Linearization Function ()

Confirm and change linearity settings.
To use this function, selectin the same way as calibration-related functions are
selected.
Function No.
Parameter
and range

Item name0 to 5

Number of input
pointsDefault
value

Description
Number of points where linear input was done.
The linear-zero input is included as one point.
Digital linearization is not performed when the set
value is between 1 and 2.

-7.0000
Linear-zero
to 7.0000
Linear 1
0 to 99999 Mass value

Voltage for linear-zero input. Unit : mV/V.

Linear 1
0.0000Span voltage
to 9.9999
Linear 2
0 to 99999 Mass value

The span voltage between linear-zero and linear 1
input. Unit : mV/V.

Linear 2
0.0000Span voltage
to 9.9999
Linear 3
0 to 99999 Mass value

The span voltage between linear-zero and linear 2
input. Unit : mV/V.

Linear 3
0.0000Span voltage
to 9.9999
Linear 4
0 to 99999 Mass value

The span voltage between linear-zero and linear 3
input. Unit : mV/V.

Linear 4
Span voltage

The span voltage between linear-zero and linear 4
input. Unit : mV/V.

0.0000 to
9.9999AD-4430B

The mass value for linear 1 input.
The decimal point position depends on

The mass value for linear 2 input.
The decimal point position depends on

The mass value for linear 3 input.
The decimal point position depends on

The mass value for linear 4 input.
The decimal point position depends on- 31 -

00.0000

.

.

.

.

0
0.000000.000000.000000.0000Error Codes For The Calibration
When an error occurs during calibration, the error number is displayed.
If calibration is finished without removing the error, the setting values will be restored to the state
before calibration.

Calibration errors and remedies
Error No.
C er1
C er2
C er3
C er4
C er5
C er6
C er7
C er8

Description
The display resolution (weighing
capacity / minimum division)exceeds the specified value.

Treatment
Make the minimum division greater or make theweighing capacity smaller. The specified value
depends on specifications of the weighing system.
Check the load cell rating and connection. When
Voltage at zero calibration
exceeds in the positive direction. nothing is wrong with the rating and connection,
adjust the load cell output as described in the next
section. When the load cell or A/D converter may
Voltage at zero calibration
be the cause of error, confirm this by using theexceeds in the negative direction. check mode.
The value of the calibration weightexceeds the weighing capacity.
Use an appropriate calibration weight and
The value of the calibration weight calibrate again.
is less than the minimum division.
The load cell sensitivity is not
Use a load cell with higher sensitivity or makesufficient.
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 make thehigh when the load of theweighing capacity smaller.
weighing capacity is placed.

Adjustment Of The Loadcell Output
Add a resistor as shown below to adjust the load cell output.
Use a resistor with a high resistance value and a low temperature coefficient.
C er2
When exceeding in the positive direction.
Resister added

EXC+

SIG-

SIG+

C er3
When exceeding in the negative direction.
EXC+
Resister added
SIG-

EXC-

SIG+
EXC-

Illustration 10 Load cell output adjustment
Because the zero point of the module has a wide adjustable range, as long as there is no
problem with a load cell, correcting an output by the module is hardly ever required.
Before an output correction is carried out, confirm load cells (deformation, wiring mistakes,
contact with anything, or model selection etc.) and connections.
- 32 -

AD-4430B

5.4.

General Functions

In this section, the way of pre-setting and descriptions for the general functions is described.
General functions are divided into groups according to function and are indicated by thegroup name with the function number.
NOTE: General functions determine the module performance and all of the settings are
stored in the FRAM.

The Procedure To Store New Parameters
Step 1Press the+key to enter to the function mode and display
Press thekey to start the function mode.
If returning to the weighing mode, press the
key.

Step 2Press thePress theDisplay.

key to select the function group to be set.
key. The function group is as follows :Group Name
Basic functions
Hold functions
BCD Interface

Step 3Press thePress theStep 4

When changing data, two methods of parameter selection and digital input depending on
the function are available.
Type
Parameter
selection
Digital input

key to select the function number to be set.
key. The current setting value is displayed.

Description of method to change data
Only the available parameter is displayed and blinks.
Select a number using the
key.
All the digits are displayed and a digit to be changed blinks.
Select a digit using the
key andchange the value using the
key.

After changing data, press the
key. The next function number is displayed.
When the value is not to be changed, press the
key to return to the function
number display.
Step 5Press thekey. The function number disappears and the display returns to that ofStep 2.
Press thekey again and the new parameters are stored in FRAM and the display
returns to weighing mode.

The blinking decimal point means that the current value is not the weight value.
If a data exceeding the available range is inputted,
is displayed and data iscanceled.

AD-4430B- 33 -

The Adjustment Of The Digital Filter
Adjust the digital filter using(digital filter).
The available settable range for the cutoff frequency is from 100 Hz to 0.7 Hz.
The cut off frequency is the frequency where vibrations declines totimes.
If the weighing value is unstable, set the cutoff frequency lower.
To make the response faster, set the cutoff frequency higher.
Cut off frequency is high.
Response rate is fast.
Weak against disturbances.

Cut off frequency is low.
Response rate is slow.
Strong against disturbances.

It is possible to make adjustments while watching the effects of the digital filter with your own eyes.
By pressing thedisplayed.
key
key

key while setting(digital filter), it is possible to check the weight

Increase stability.
Return to the value setting display.

- 34 -

AD-4430B

The Basics Function (Function No.
Parameter
and range

Item nameKey switch
0000 to 1111 disable

0 to 75 to 20

0 to 90 to 16

1 to 3-99999 to99999

AD-4430B)
Default
value

Description
Each digit of the setting corresponds to a key switch.
Only available in the weighing mode.
0 : Enables
Key assignment to each binary digit.
1 : Disables
4th
3rd
2nd
1st

0 : None
1 : Manual print command
2 : Hold
3 : Alternate switch
4 : Momentary switch
key function 5 : Changing between gross weight and net weight
6 : Clear the tare weight
7 : Clear the zero value
NOTE: Clearing the zero value can be enabled or
disabled by.
20 times/second
Display update
10 times/second
rate
5 times/second
0 : None
1 : Zero tracking in progress
2 : Alarm (Zero range setting error, over)3:
key status
4 : Near-zerox display
5 : HI output (Over the upper limit value)
6 : OK output (Between upper and lower limit values)
7 : LO output (Below the lower limit value)
8 : State of SELECT input terminal (INPUT(17))
9 : State of SELECT output terminal (OUTPUT(33))
Selects a cutoff frequency.
0: None1: 100.0 Hz
9: 7.0 Hz
2: 70.0 Hz
10: 5.6 Hz
3: 56.0 Hz
11: 4.0 Hz
Digital filter
4: 40.0 Hz
12: 2.8 Hz
5: 28.0 Hz
13: 2.0 Hz
6: 20.0 Hz
14: 1.4 Hz
7: 14.0 Hz
15: 1.0 Hz
8: 10.0 Hz
16: 0.7 Hz
1 : Normal hold
Hold function
2 : Peak hold
3 : Averaging hold
Near-zero

The reference value for near-zero.
Decimal point position is linked to- 35 -.

0000(2binary)

5

20

0

15

1

10

Function No.
Parameter
and range

Item nameComparison
mass at near1 to 2zero
Upper limit-99999 to 99999 value
Lower limit-99999 to 99999 value
1 to 2

1 to 2Item to be compared with near-zero.
1 : Gross weight
2 : Net weight
Reference value for the upper limit.
Decimal point position is linked toReference value for the lower limit.
Decimal point position is linked to

0.00 to 9.99
0.00 to 9.99
0 to 20.00 to 9.99
0 to 99999

.

10

.

-10

1

Default
value

Description

Time to perform the averaging. Unit : second.
0.00 is not averaged.
to wait before commencing hold or averaging.
Start wait time Time
Unit : second.
Condition to start the hold or averaging automatically.
Condition of 0 : Do not use automatic start.
automatic start 1 : Above the near-zero range, and stable.
2 : Above the near-zero range.
Release when control input is falling.
0 : Do not release
1 : Release
When theis set to 0.
Average time

HOLD (34) for
INPUT

1

)

Item name

Release using
control input
0 to 1

1

Item to be compared with the upper and lower limit.
Comparison
mass of upper 1 : Gross weight
2 : Net weight
and lower limit
used when the result of the comparison with
Output logic of Logic
the
upper
and lower limit is output
upper and1:
Positive
logic
lower limit
2 : Negative logic

The Hold Function (Function No.
Parameter
and range

Default
value

Description

Holding
InputtingHolding
statusis set to 1.

Holding
InputtingHolding
statusDuringHolding- 36 -

0

DuringHoldingRelease after a set amount of time has passed.
Unit : second. 0.00 is not released.
when fluctuation from the holding value
Release using Release
exceeds a set value. The decimal point position is thefluctuation range same as the setting of. 0 is not released.
Release time

0.00

1

During Holding

When the

0.00

0.00
0
AD-4430B

0 to 1

Release when the weighing value is in the near-zero range.
Release at near0 : Do not release.
zero
1 : Release.

0This hold function only works when(hold function) is set to 2 (peak hold) or 3 (averaginghold). This hold function has no function when(hold function) is set to 1 (normal hold).
(average time) works only when(hold function) is set to 3 (averaging hold).

The BCD Function (Function No.
Parameter
and range

1 to 4

1 to 35 to 1000

1 to 2
1 to 2
1 to 2
1 to 20 to 50 to 12AD-4430B)

Item name

Description

1 : Weighing value
2 : Gross weight
Data outputting 3 : Net weight
4 : Data specified by BCD input(GRS/NET(18)for INPUT)
1 : Stream
Data transfer
2 : Automatic printingmode
3 : Manual printing
5 times/second
10 times/second Display linked toData transfer rate
20 times/second
100 times/second
1000 times/second
Output logic of
1 : Negative logic
data transfer
2 : Positive logic
Output logic of
1 : Negative logic
negative sign
2 : Positive logic
Output logic of
1 : Negative logic
status
2 : Positive logic
Output logic of
1 : Negative logic
strobe2 : Positive logic
0 : None
1 : Clear zero
Input selection
2 : Clear tare
3 : Changing between gross weight and net weight
INPUT (17)4 : Print command5:key
0 : None
1 : Stabilization
2 : During tare
3 : Near-zero
4 : Hold busy stateOutput selection 5 : HI output (Over upper limit)
6 : OK output (Between upper and lower limits)
OUTPUT (33)
7 : LO output (Under lower limit)
8 : During operating weighing (On)9 : During operating weighing (1 Hz)
10 : During operating weighing (50 Hz)
11 : Alarm (Zero correction error and tare error )12 : Busykey- 37 -

Default
value

1

1

20

2
2
2
2

3

1

6.

6.1.

Interface

The Parallel BCD Output

Timing Chart Of The BCD Output

The strobe signal becomes "1" when starting data transmission and becomes "2" after the
strobe time. The strobe pulse band takes half the time to transmit data.
Data output
1

Strobe signal 0

1/2 Cycle
1 Cycle1/2 Cycle

Terminals Of The BCD Output
BCD Output And I/O Output
I/O Input
Output type
Isolation
Output current
Saturation voltage

Open Collector
Photo coupler

50mA Max.
0.5V Max. @50mA

Input type
DC input
Open circuit voltage Approx. 5V
0.1mA Max.
Off current
On current
2mA Min.
Saturation voltage
2V
Anti - chattering time 10msec.

The circuit of BCD is isolated from the D.C. power
supply and load cell circuit.
Supply D.C. +24 V between BCD PWR+24V
terminal and COM terminal.

Over Flow

The State Of The BCD Output+30V max.

The whole bits of the weighing data (1x100 to
8x104) are set to "1". Negative sign andstatus bits are according to the situation.

Output terminal
COM (Common)

Except Weighing Mode

The whole bits of the weighing data (1x100 to
8x104) are set to "1". Over bit is set to "1".
Other bits are set to "0". The strobe signal is
not output. A strobe signal is output once
when moving the mode from weighing modewith stream mode.
- 38 -+5V

750Ω

Input terminal

AD-4430B
Internal circuit

AD-4430B

Positive Logic And Negative Logic
Negative Logic (A-Contact: Normally open) And Positive Logic (B-Contact:
Normally closed)
The AD-4430B can select the output logic of the output terminals.
The output terminal is conductive in negative logic (A-Contact: Normally open) when the
output signal is "1".
The output circuits of the AD-4430B are an open collector as shown below.
ex. The MINUS output terminal
To light the load LED when the BCD output value is minus, select the negative logic in the"5.4.5. The BCD Function".
When the power is off, both output terminal logics become non-conductive.
Lights the LED

Inside of AD-4430B
29 MINUS output terminal
BCD output value isminus

Turn onCOM terminal

Output logic and behavior (ex. MINUS output terminal)
Output logic
Behavior
ExampleNegative logic
The MINUS output terminal is
The load LED is lit when the BCD(A-contact:
conductive when the BCD output output value is minus.
Normally open) value is minus.
=1
Positive logic
The MINUS output terminal is non- The load LED is lit when the BCD(B-contact:
conductive when the BCD output output value is plus or zero.
Normally closed) value is minus.
=2

OUTPUTINPUT

I/O input and I/O output
Name

No.

DIAGNOSSELECT
GRS/NET

16
17
18

HOLD
TARE
ZERO

34
35
36

When it is turned on for 1 second or longer, it goes into self-diagnosis mode.
The input is the one set with the bcd08 function.
Enabled when bcd01 function is set with 4.
Outputs net when open and gross when short circuited.
Hold command. The hold is released according to the setting of the Hld04 function.
Performs tare.
Performs zero correction.

MINUS
OVER
NETDISPHOLD
SELECT

29
30
31
32
33

Indicates the polarity of weighing data. (“1” when minus)
Indicates an output value overflow. (“1” when over)
Indicates that the net is being displayed.(“1” when the time of the net display)
Indicates that the hold is in progress. (“1” when hold)
It is the output set with the bcd09 function.

AD-4430B

Description- 39 -

7.

Maintenance

7.1.

Error Messages

If an error message is displayed, refer to the chart below to take proper measures.
Error message

X

7.2.

Cause
Treatment
Program checksum error.
Repair is required.
Data can not be acquired from
Repair is required.
the A/D converter.
Correct data can not be read Perform initialization. If initialization does not clear
from the FRAM.
the error, repair is required.
Calibration data is not correct. Perform calibration.
Calibration error. X : number. Refer to “5.3.8. Error Codes for the Calibration”.
The setting value is out of the
Check the setting value and set again.
settable range.

Check Mode

The check mode checks the performance of the display, key switches and external I/O.

Entering The Check Mode
Step 1Press thekey while pressing and holding the.
If returning to the weighing mode, press the
key.

Step 2Press theStep 3

Select the check item using the
key. Press thePress thekey when exiting it

key (

+

) to display

key while pressing and holding thekey (+) to displayof the check mode. Press the
key to display the check item

Display

key to enter to it.

Item To Be Checked
Key check
BCD checkA/D converter output check (Load cell)
Internal count check
Program version
Serial number
Program checksum
Memory checksum (EEPROM)
C-Fnc check (to)- 40 -

AD-4430B

Verifying The Switch Operation
When pressing the key, the corresponding segment moves.
If stopping the current check mode, press the
key twice.

Checking The BCD Output
An output value of the BCD is displayed in unit of one bit.
ex. If BCD output is 400.
Also, depending on the IO input, the status mark illuminates.

Monitoring The A/D Converter ( For Load cell Output)
The load cell output voltage rate is displayed in unit of mV/V .
ex. If internal count is 1.2345 mV/V ,If value is above ±7 mV/V, a damage and connection error of the load cell may cause . Referto "7.5. Verifying The Load cell Connections Using Multimeter".

Monitoring The Internal Value
Internal count ( 10 times of weighing value ) is displayed.
ex. If internal count is 123.

Monitoring The Program Version
Program version is displayed.
ex. If version is 1.00 .

Monitoring The Serial Number
ex. If low five digits of serial number is displayed.

Monitoring The Checksum Of The Program
Checksum of the program is displayed.
ex. If checksum is EF.

Monitoring The Checksum Of An Internal FRAM
Checksum of FRAM is displayed.
Memory of the general function is not checked
ex. If checksum is EF.

Displaying Function Parameters For The Calibration (The function related to the calibration can be displayed.
AD-4430B- 41 -)

7.3.

Initializing Parameters

The initialization mode restores the parameters of the default values to the FRAM.
Three types of initialization mode are available as shown below.
Initialization modeRAM
initialization
General functions
initialization
All data
initialization

Display

Description
RAM memory is initialized. The center of zero and tarevalue will be restored to 0.
Data of the general functions stored in the FRAM arereset to factor settings.
All data stored in the FRAM are initialized. So calibration
data is included, calibrate the module again.

Initializing Mode For RAM And Function Parameters
Step 1Press thedisplay

key while pressing and holding thekey (. If returning to the weighing mode, press the

+
key.

) to

Step 2Press thedisplay

key while pressing and holding theof the check mode.

+

) to

Step 3

Select the initialization mode

Step 4

Select an item to be initialized using theStep 5Check that all status LED are blinking.
If performing the initialization, press the
key for 3 seconds or more.
After initialization, all segments light and return to the weighing mode.
If canceling the initialization, press the
key return to the weighing mode.

key (using thekey. Press the

key. Press the

key.

key.

Initializing The Whole Data
Step 1In the standby mode (While turning off the module),Press+
key to display.
If returning to the weighing mode, press the
key.

Step 2Press theStep 3

Select all initialization mode

Step 4Check that all status LED are blinking.
If performing the initialization, press the
key for 3 seconds or more.
After initialization, all segments light and return to the weighing mode.
If canceling the initialization, press the
key return to the weighing mode.

key. to enter to calibration modeusing the- 42 -.
key. Press thekey.

AD-4430B

7.4.

Verifying The Load Cell Connections ( DIAGNOS )Guideline To Verify The Load Cell Connections

The faulty wiring or disconnection of the load cell can be checked using the AD-4430B.
This verification is useful for new setting, pre-measurement inspection and periodical inspection.
No.
Check Item
1 Load cell input voltage
2 SEN+ voltage
3 SEN- voltage
4 Load cell output voltage
5 Load cell output rate
6 SIG+ voltage
7 SIG- voltage
8 Internal temperature

BetweenBetweenBetweenBetweenBetweenBetweenBetweenTargetSEN+
SEN+
SENSIG+
SIG+
SIG+
SIG-

AGND : Internal analog circuit ground
SIG- : Load cell output (-)
SIG+ : Load cell output (+)
EXC- : Load cell input (-)
SEN- : Sensing input (-)
SEN+ : Sensing input (+)
EXC+ : Load cell input (+)

SENAGNDAGNDSIGSIGAGND
AGND

Judgment Criteria (Generally)
3 V or more
4 V or more
1 V or lessWithin ±35 mV
Within ±7 mV/V
1 V to 4 V
1 V to 4 V-20 °C to +60 °C

Load cell

AD-4430B

Illustration 11 Wire Name of Load Cell

The Operation With The BCD Input
When inputting "ON" level to the "DIAGNOS" terminal of the BCD input terminal for 1 secondor more, the self-check mode is started and each results are displayed and outputted. The
scan condition of the self-check mode can be specified by the following BCD input.

BCD Input
No.
Scan
1
2
3
4
5
6
7
8

AD-4430B

DIAGNOS
ON
ON
ON
ON
ON
ON
ON
ON
ON

GRS/NET
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON

HOLD
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF

- 43 -

TARE
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF

ZERO
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF

Verifying Load Cell Connections with Switch Operation
Step 1Press thekey while holding thefor general functions mode. Press thereturn to weighing mode, press the

Step 2Press themode

Step 3key (+) to display
key to enter general functions mode. To
key.

key while holding thekey (. To display the check item, press the+) to display checkkey.

Press thekey twice to select load cell connections diagnosis
and thenpress thekey to enter it. Each item is automatically diagnosed. After approx.16
seconds, the diagnosis is displayed. Also, each diagnosis is checked by selecting items
pressing the
key.
Press thekey to return to the display.

Display and Output of Check Results
When checking and changing items,
is displayed andis output.
The check result is displayed and output asin which error codes are accumulated.
If there are no errors,
is displayed andis output.
If there is an error,
is displayed andis output. With output BCD, thevalue is without a decimal point.
The resistance of the load cell cable is calculated by the following formula :(Resistance value of the load cell) × (No.3) / (No.1)
No. Check item
1
2
3
4
5
6
7
8

Status LED

Display Range: lighted

0.001 V
0.001 V
0.001 V
0.001 mV
0.0001 mV/V
0.001 V
0.001 V
0.1 °C: not lighted

Load cell input voltage
SEN+ voltage
SEN- voltage
Load cell output voltage
Load cell output rate
SIG+ voltage
SIG- voltage
Internal temperature- 44 -

Error Code
1
2
4
8
16
32
64
128

AD-4430B

7.5.

Verifying The Load Cell Connections Using Multimeter

The load cell connection can be checked easily using a digital multimeter.
“Illustration 12 Connection Check of Load Cell” shows points to confirm the load cell connection.
When a summing box is used, the same measurement must be performed, even internally.
Output voltage of load cell

Center point voltage

Drop voltage between
EXC- and SEN-.

Load cell
SIG-

Shield cable

EXC-

Input voltage of load cell

SENSIG+
SEN+

Drop voltage between
EXC+ and SEN+.

EXC+

Illustration 12 Connection Check of Load Cell

Check List Of The Load cell Connections
Measurement
pointsDescription

Conditions

Drop voltage of cable on
EXC+ side.
Normally it is 100 mV or less. However, it may exceed
1V when an extremely long load cell cable is used. For
Drop voltage of cable on the 4-wire connection, it must be 0 V.
SEN- EXCEXC- side.
EXC+ SEN+

EXC+ EXC- Input voltage

Normal range is between 4.75 V to 5.25 V.

SIG- EXC- Center point voltage

Approximately 2.5 V, about a half of excitation voltage.

SIG+ SIG- Output voltage

Generally, it is within 0 V to 15 mV. The theoreticalvalue is calculated from the load cell rated capacity,
actual load and excitation voltage.

AD-4430B- 45 -

When the module does not operate properly, write the required items in the table below and contact
your local A&D dealer.
Item

Connection method
Model name & number
Rated capacity
Rated output
Allowable overload
The number of load cells
used
Use of summing box
Length of the extension
cable
Initial load of weighing
moduleMinimum division ofweighing module
Capacity of weighing
moduleOutput of load cell duringinitial load
Output of load cell when
loaded to capacity or to amass of choice.
Measurement points
EXC+
SEN+
EXC+
EXCSENEXCSIGEXCSIG+
SIG-

Usage circumstances,model number, rated,measurement value etc.

Note4-wire connection
6-wire connection

When using the 4-wire connection, connect
between EXC+ and SEN+ and between
EXC- and SEN-.

[Unit

]
[mV/V][%][pieces]

[m]
[Unit

]

[Unit

]

[Unit

]

[mV/V]
Load cell output at load
[Unit][mV/V]

Length between the module and thesumming box.

All digits including decimal figures.
Ex: 0.002kg
All digits including decimal figures.
Ex: 10.000kg
Between -0.1mV/V and rated sensitivity ofload cell ( using initial load )When loaded to capacity, the output valueof the initial load + the rated output value ofthe load cell.
( It must be within allowable overload.)

Measurement contents
Drop voltage of cable on EXC+ side.
Input voltage
Drop voltage of cable on EXC- side.
Center point voltage
Output voltage- 46 -

Measurement result
[mV]
[V]
[mV]
[V]
[mV]

AD-4430B

7.6.

The Parameter List For The Function List

When performing maintenance, use the following list as a memorandum.
When making inquiries about the product, inform your local A&D dealer of the user settings.

The Calibration Function ()

Function No.
Default User MEMO
Parameter Item name
Description
value setting
and range
Decimal point Decimal point position of the weight value
0
0 to 0.0000 position
0 0.0 0.00 0.000
0.0000
Minimum
Minimum division (d) of the weight value1
division (A
1 to 50
1
2
5
10
20
50
scale / digit )Weighing capacity of the module. Weighing ispossible up to the value of this setting plus 8 d. If
Weighing
70000
the value exceeds this, overflow will occur and
1 to 99999 capacity
will not be displayed. The decimal point positionis the same as the setting of.
Range to enable zero adjustment by the(ZERO) key Expressed as a percentage of
the weighing capacity with the calibration zero
point as the center. For example, if this is set to 2,
2
Zero range
0 to 100the value in the range of ±2% of the weighing
capacity with the calibration zero point at thecenter will be to zero. When a power-ON zero isperformed, the initial zero point will be the center.
Performs zero tracking using this setting in
Zero tracking combination with the setting of the zero tracking
0.0
0.0 to 5.0 time
width
. When 0.0, zero tracking will not
be performed. Unit : Second in 0.1 increments.
Performs zero tracking using this setting in
combination with the setting of the zero tracking
Zero tracking
time. When 0.0, zero tracking will not be 0.0
0.0 to 9.9 width
performed. Unit : d (minimum division) in 0.1
increments.
Performs stability detection using this setting in
combination with the setting of the stability
Stability
1.0
detection width. When 0.0, stability
0.0 to 9.9 detection time
detection will not be performed. (Stable all thetime) Unit : Second in 0.1 increments.
Performs stability detection using this setting in
Stability
combination with the setting of the stability
2detection
detection time
. When 0, stability
0 to 9width
detection will not be performed. (Stable all thetime) Unit : d (minimum division).
Tare and zero adjustment when the weight
Tare and zero
value is unstable.
1adjustment
0 to 1
0 : Disables both functions.
when unstable
1 : Enables both functions.
Tare when the Tare when the gross weight is negative.
1
gross weight 0 : Disables tare.
0 to 1is negative
1 : Enables tare.
AD-4430B- 47 -

Function No.
Parameter Item nameand range

Description

Default User MEMO
value settingStandard serial output when the weight value
Output whenoverflows and is unstable.
1
overflow and
0 to 1
0 : Disables output.
unstable1 : Enables output.
To judge when the negative gross weight is
Exceeding exceeded.
1
1 : Gross weight < -99999
negative
1 to 3gross weight 2 : Gross weight < Negative weighing capacity
3 : Gross weight < -19d
To judge when the negative net weight is
Exceedingexceeded.
1
negative net
1 to 2
1 : Net weight < -99999
weight2 : Net weight < Negative weighing capacity
Select whether or not to clear the zero value.
Clear the zero1
0 : Disables.
0 to 1 value
1 : Enables.
Select whether or not to perform zero setting
Zero setting
when power is turned on.
0when power
0 : Disables.
0 to 1
is turned on
1 : Enables.
Input voltage from a load cell at zero. Unit :Input voltage mV/V.
0.0000-7.0000
at zeroThis value is determined in zero calibration
to 7.0000
during the calibration with an actual load.
Input voltage from a load cell at span. Unit :mV/V.
Input voltage
0.0001This value and the value of are determined in 3.2000
at span
to 9.9999
span calibration during the calibration with anactual load.
The input voltage at span for
displaysCalibration
the input voltage per this setting of weighing
weightvalue. When performing digital span, which
32000
corresponding
1 to 99999
calibrates without using a calibration weight,
to Input voltage
setting this function so as,
andat spanare required.
Gravityacceleration Gravity acceleration of the place of calibration. 9.8000
9.7500
Unit : in m/s2.
of place of
to 9.8500
calibration
Gravity
Gravity acceleration of the place where the9.80009.7500 acceleration ofscale is being used. Unit : in m/s2.
to 9.8500 place of use
0 : Enables.
0
Disable hold0 to 1
1 : Disables.

- 48 -

AD-4430B

The Linearization Function (Function No.
Parameter Item nameand range

0 to 5)

Description

Number of points where linear input was done.
Number of The linear-zero input is included as one point.
input points Digital linearization is not performed when theset value is between 1 and 2.

Default User MEMO
value setting0-7.0000 Linear-zero Voltage for linear-zero input. Unit : mV/V.
0.0000to 7.0000
Linear 1
The mass value for linear 1 input.
0
0 to 99999 Mass value The decimal point position depends on.
Linear 1
The span voltage between linear-zero and linear
0.00000.0000 to Span
1 input. Unit : mV/V.
9.9999 voltage
Linear 2
The mass value for linear 2 input.
0
0 to 99999 Mass value The decimal point position depends on.
Linear 2
The span voltage between linear-zero and linear
0.00000.0000 Span
2 input. Unit : mV/V.
to 9.9999 voltage
Linear 3
The mass value for linear 3 input.
0
0 to 99999 Mass value The decimal point position depends on.
Linear 3
The span voltage between linear-zero and linear
0.0000 Span
0.00003 input. Unit : mV/V.
to 9.9999 voltage
Linear 4
The mass value for linear 4 input.
0
0 to 99999 Mass value The decimal point position depends on.
Linear 4
The span voltage between linear-zero and linear
0.00000.0000 to Span
4 input. Unit : mV/V.
9.9999 voltage

The Basics Function (Function No.
Parameter Item nameand range)
Description

Default User MEMO
value setting

Each digit of the setting corresponds to a key
switch. Only available in the weighing mode.
key switch 0 : Enables Key assignment to each binary digit. 0000
0000 to 1111 disable(binary)
1 : Disables 4th
3rd 2nd
1st

0 to 7

AD-4430B

keyfunction

0 : None
1 : Manual print command
2 : Hold
3 : Alternate switch
4 : Momentary switch
5 : Changing between gross weight and net weight
6 : Clear the tare weight
7 : Clear the zero value
NOTE: Clearing the zero value can be enabledor disabled by.
- 49 -

5

Function No.
Parameter Item nameand range
5 to 20

0 to 90 to 16

1 to 3

Default User MEMO
value setting

Description

20 times/second
Display
10 times/second
update rate
5 times/second
0 : None
1 : Zero tracking in progress
2 : Alarm (Zero range setting error, over)3:
key status
4: : Near-zerox display
5 : HI output (Over the upper limit value)
6 : OK output (Between upper and lower limit values)
7 : LO output (Below the lower limit value)
8 : State of SELECT input terminal (INPUT(17))
9 : State of SELECT output terminal (OUTPUT(33))
Selects a cutoff frequency.
0: None1: 100.0 Hz
9: 7.0 Hz
2: 70.0 Hz
10: 5.6 Hz
3: 56.0 Hz
11: 4.0 Hz
Digital filter
4: 40.0 Hz
12: 2.8 Hz
5: 28.0 Hz
13: 2.0 Hz
6: 20.0 Hz
14: 1.4 Hz
7: 14.0 Hz
15: 1.0 Hz
8: 10.0 Hz
16: 0.7 Hz
1 : Normal hold
Hold
2 : Peak holdfunction
3 : Averaging hold

The reference value for near-zero.
-99999 to Near-zero
Decimal point position is linked to
99999
Compariso Item to be compared with near-zero.
n mass at 1 : Gross weight
1 to 2near-zero 2 : Net weight
limit Reference value for the upper limit.
-99999 to Upper
value
Decimal point position is linked to
99999

.

0

15

1

10

1

.

Lower limit Reference value for the lower limit.
-99999 to value
Decimal point position is linked to.
99999
Compariso Item to be compared with the upper and lower limit.
n mass of 1 : Gross weight
1 to 2upper and 2 : Net weight
lower limit
Output logic Logic used when the result of the comparison withof upperthe upper and lower limit is output
1 to 2and lower 1 : Positive logic
limit
2 : Negative logic- 50 -

20

10
-10

1

1

AD-4430B

The Hold Function ()

Function No.
Default User MEMO
Parameter Item name
Description
value setting
and range
AverageTime to perform the averaging. Unit : second.
0.00
0.00 to 9.99 time
0.00 is not averaged.
Start wait Time to wait before commencing hold or averaging.
0.00
0.00 to 9.99 time
Unit : second.
Condition to start the hold or averaging automatically.
Condition of
0 : Do not use automatic start.
0
automatic
0 to 2
1 : Above the near-zero range, and stable.
start
2 : Above the near-zero range.
Release
Release when control input is falling.
using
0 : Do not release
control input 1 : Release1
0 to 1
Hold(34)
for INPUT
Release
Release after a set amount of time has passed.
0.00
0.00 to 9.99 time
Unit : second. 0.00 is not released.
Release
Release when fluctuation from the holding value
using
exceeds a set value. The decimal point position is0.
0 to 99999 fluctuation the same as the setting ofrange
0 is not released.
Release when the weighing value is in the nearRelease at zero range.
0
0 to 1near-zero 0 : Do not release.
1 : Release.

The BCD Function (Function No.
Parameter Item nameand range)
Description

1 : Weighing value
2 : Gross weightData
3 : Net weight
1 to 4
outputting 4 : Data specified at BCD input(GRS/NET(18)for INPUT)
Data
1 : Stream
2 : Automatic printing
transfer
1 to 3
3 : Manual printingmode
5 times/second
Data
10 times/second Display linked to
20 times/second
transfer
5 to 1000
100 times/second
rate1000 times/second
Output logic 1 : Negative logic
of data
1 to 2
2 : Positive logictransfer
Output1 : Negative logic
logic ofnegative 2 : Positive logic
1 to 2sign
AD-4430B- 51 -

Default User MEMO
value setting

1

1

20

2

2

Function No.
Default User MEMO
Description
Parameter Item namevalue setting
and range
Output1 : Negative logic
2
logic of1 to 2
2 : Positive logic
status
Output1 : Negative logic
2
logic of1 to 2
2 : Positive logic
strobe0 : None
1 : Clear zero
Input
selection 2 : Clear tare3
0 to 5
3 : Changing between gross and net
INPUT(17) 4 : Print command5:key
0 : None
1 : Stabilization
2 : During tare
3 : Near-zero
4 : Hold busy stateOutput5 : HI output (Over upper limit)
selection
6 : OK output (Between upper and lower limits)
1
0 to 12 OUTPUT
7 : LO output (Under lower limit)(33)
8 : During operating weighing (On)9 : During operating weighing (1 Hz)
10 : During operating weighing (50 Hz)
11 : Alarm (Zero correction error and tare error )12 : Busykey- 52 -

AD-4430B

3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, JAPANFax: [81] (3) 5391-1566
Telephone: [81] (3) 5391-6132

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Telephone: [1] (408) 263-5333
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Telephone: [44] (1235) 550420
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