white bird W31 User manual

W31-W31S
Industrial Scale
User Manual

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
Page 1 of 36
Contents:
1. Features .............................................................................................................................3
2. Models ...............................................................................................................................3
3. Package Box Including........................................................................................................4
4. Keypad and Display Description..........................................................................................5
Key functions in usage .......................................................................................................................6
5. Installation..........................................................................................................................8
6. Basic Weighing.................................................................................................................12
7. Piece Counting..................................................................................................................15
8. Check weighing (+/-)........................................................................................................18
9. Temporary Gross Weight Indication...................................................................................20
10. Unit Change......................................................................................................................20
11. Advanced functions in Set-up Menu..................................................................................21
PLU Memory Menu:..........................................................................................................................22
ALU Memory Menu:..........................................................................................................................22
CLU Memory Menu:..........................................................................................................................22
Buzzer Menu: ...................................................................................................................................22
Backlight Menu: ...............................................................................................................................24
Configuration Menu:.........................................................................................................................25
Serial Data Outputs: .........................................................................................................................28
Clock Menu: .....................................................................................................................................31
Test Menu:.......................................................................................................................................32
12. Serial Data Formats ..........................................................................................................32
13. Specifıcatıons ...................................................................................................................34
14. Troubleshooting................................................................................................................35
15. EU Declaration of Conformity ............................................................................................36
IMPORTANT
This manual contains instructions for the use and maintenance of the instrument. Please read
user manual carefully before installing the instrument or using the scale.

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
Page 2 of 36
WARNINGS
Read this section carefully before installation of the W31 industrial scale.
Before start using the instrument, check if the voltage indicated on the AC/DC adaptor label is the
same as the local power supply. If it is not, do not connect the scale to the power line ( Contact
with instrument representative ).
Before energizing the instrument, check all connectors are installed properly. All external cables
should be installed safely to avoid mechanical damages.
The scale should only be used under proper environmental conditions indicated in this operation
manual.
Do not use this scale in places where there are unstable conditions or explosive danger.
Do not place the scale near heat sources or under direct solar radiation influence.
Keep the scale far away from other electromagnetic radiation sources. Its influence could affect
the weighting precision.
When low-battery announcement appears, the battery should be charged. If the battery remains
discharged for a long time, it deteriorates and could stop working. Every month battery charging
is recommended for long time battery life, if the scale is not used.
Use only original BAT30 battery for your instrument safety.
Disconnect from power supply and take out internal battery located on the bottom of the
instrument and wait for 3 minutes before interfering the instrument.
In the case of any inconvenience of your application to the above items, contact with instrument
representative.
IMPORTANT
In case of breakdown or inappropriate operation working due to an inadequate following of the instructions
given before, the guarantee right will be lost.
RIGHTS AND LIABILITIES
All rights reserved.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means,
mechanical, photocopying, recording, or otherwise, without the prior written permission of WHITE BIRD .
No patent liability is assumed with respect to the use of the information contained herein. While every precaution has
been taken in the preparation of this book, WHITE BIRD assumes no responsibility for errors or omissions. Neither is any
liability assumed for damages resulting from the use of the information contained herein.
The information herein is believed to be both accurate and reliable. WHITE BIRD, however, would be obliged to be
informed if any errors occur. WHITE BIRD cannot accept any liability for direct or indirect damages resulting from the use
of this manual.
WHITE BIRD reserves the right to revise this manual and alter its content without notification at any time.
Neither WHITE BIRD nor its affiliates shall be liable to the purchaser of this product or third parties for damages, losses,
costs, or expenses incurred by purchaser or third parties as a result of: accident, misuse, or abuse of this product or
unauthorized modifications, repairs, or alterations to this product, or failure to strictly comply with WHITE BIRD operating
and maintenance instructions.
WHITE BIRD shall not be liable against any damages or problems arising from the use of any options or any consumable
products other than those designated as Original WHITE BIRD Products.
NOTICE: The contents of this manual are subject to change without notice.
Copyright © 2012 by WHITE BIRD Zhongshan,China

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
Page 3 of 36
1. FEATURES
33 x 100 mm height liquid crystal display with multicolor backlight.
Navigation keypad for intuitive menu use.
Programmable to g, kg, lb or oz weighing units.
Unit change feature between metric and imperial units.
Single range or Multi range operation.
Linearity correction.
Check weighing function for Hi/OK/Low with optical and acoustic announcement.
Piece counting function in high accuracy.
100 products check weighing memory.
100 memory for checking the quantity at piece counting.
100 products memory for piece counting.
Total memory at weighing and at counting.
Foot switch input for easy taring.
Automatic power off function.
Multilanguage RS 232C data output for printer, PC or remote display connection.
100 – 240 VAC, 50-60 Hz, or 100 – 240 VAC, 50 -60 Hz / 12VDC 0.8A regulated power adaptor.
2. MODELS
Model
W31 3kg MR
W31S 3kg MR
W31 6kg MR
W31S 6kg MR
W31 15kg MR
W31S 15kg MR
W31 30kg MR
W31S 30kg MR
1.Range
1500 g x 0.5 g
3000 g x 1 g
6 kg x 0.002 kg
15 kg x 0.005 kg
Capacity /
Readability
2.Range
3000 g x 1 g
6000 g x 2 g
15 kg x 0.005 kg
30 kg x 0.010 kg
Approval
yes
yes
yes
yes
Min. division at industrial
usage
0.2 g
0.5 g
1 g
2 g
Model
W31 6kg HR
W31S 6kg HR
W31 12kg HR
W31S 12kg HR
W31 30kg HR
W31S 30kg HR
1.Range
3000 g x 0.5 g
6 kg x 1 g
12 kg x 2g
Capacity /
Readability
2.Range
6000 g x 1 g
12 kg x 2 g
30 kg x 5g
Approval
yes
yes
yes
Min. division at industrial
usage
0.1 g / 0.2 g (MR)
0.5 g
1 g

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017 Page 4 of 36
3. PACKAGE BOX INCLUDING
W31(S) Industrial Scale
100VAC - 240VAC, 50 – 60 Hz / 12VDC, 0.8A regulated adapter.
(Only 12 VDC scales)
Pan
Operation manual

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017 Page 5 of 36
4. KEYPAD AND DISPLAY DESCRIPTION
W31 industrial scale has wide angle LCD display with colorful backlight and keys are ergonomically designed
in front of the instrument. The weight display is 6 digit and 21 mm height.
The meanings of the annunciators on the display are;
Unstable : This sign appears if the load on the scale is not stable. Weight
value of the object should be read if the scale is stable. Taring, zeroing,
printing and accumulation are available when the scale is stable.
Center of zero : This sign appears if weight is within ±0.25e of the center
of zero.
(Page12)
Weight unit : Weighing unit is located on the right of the weighing display
as kg, g, lb, and oz.
(Page20)
Net weight : This sign indicates that weight indication is in net.
(Page12)
Gross weight : This sign indicates that displayed weight value is gross.
Operation range : Announces operation range of the multi range scale.
Piece counting mode : The value on the display indicates quantity.
(Page15)
Total : The value on the display indicates accumulation value in the
memory
(Page14 inweighingandpage17 inpiececounting)
APW : The value on the display indicates average piece weight.
(Page17)

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Gross / Net : Temporary gross indication.
(Page 20)
Battery charging level : This sign indicates level of battery charging.
Moving level indicates the battery charging.
Battery is empty : Announces the battery is discharged and should be
charged in a first convenient time.
Key functions in usage
Keys and their functions of the W31 industrial scale are ;
Power on/off key : Press button to turn it on. To turn it off, press this
button for one second.
Zero key : This key adjusts the scale zero, if there is any drift. Zeroing
should be done if there is no any load on the platform.
(Page 12)
Tare key : Press this key to deduct the weight of the container placed on
the platform to see net weight value of the added material in the container
or taken out material from the container.
(Page 12)
Piece Counting key : Press the key to enter to piece counting.
(Page 15)
Sampling key : Press the key more than one second to start sampling in
piece counting.
(Page 15)
Escape key : In menu mode, press this key to escape from menu and
return to normal mode.
G/N key : This key is used to switch the display between the net and
gross weight temporary.
(Page 12)
Check weighing key : To enter check weighing operation press this key
until [ H-L : n ] message appears.
(Page 19)
Unit Change key : Press this key to toggle between the primary and
secondary units.
(Page 20)
High Resolution : This key is used for displaying weight value in higher
resolution.
ADV key : This key is used to enter advance functions setting by pressing
more than one second.
(Page 21)
M+ Add to memory key : Press this key to add the indicated weight to
the accumulator in weighing and in counting operations.
(Page 14 in weighing and page 17 in piece counting)

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
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MR Memory read : Press this key to indicate accumulated total weight in
weighing operation or accumulated quantity in piece counting operation.
(Page 14 in weighing and page 17 in piece counting)
MC Memory clear key : Press this key to erase accumulated value from
memory. The weight and count accumulators shall be erased separately.
(Page 14 in weighing and page 17 in piece counting)
Enter key : Press this key for printout.
Navigation keys : Navigation keys are located on the right of the scale
front which are up, down, left and right arrow keys. These keys are used
for navigation in set up and to change any numerical value.

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017 Page 8 of 36
5. INSTALLATION
PRECAUTION: Please read this manual carefully before installation of the instrument. Applying the
recommendations in this section will increase your system reliability and long term performance.
The scale should be placed as clean as possible area, not getting direct sun light if possible, with a
temperature between -10 ºC and +40 ºC, humidity not exceeding 85% non-condensing. All external cables
should be installed safely to avoid mechanical damages.
W31 instruments are very low level signal measuring instruments. To avoid electrical noise, W31 should be
separated from the equipment that produces electrical noise.
Step 1: Mechanical Installation
Be sure that mechanical installation of the instrument is done properly for long time life before starting
installation as descripted below.
Put the scale on stable and enough strong table for
weighing in high accuracy. Then place the pan on the
scale.
Adjust scale foots as;
- The bubble will stay in the circle.
- All foots shall adjust well for stable standing on
the table.
Step 2: Peripheral Connections
Warning:
1. Please always remember that W31 scale is very low voltage measuring instrument. Please do not
forget that the instrument must be powered off before inserting or removing any peripheral
connector.
2. Quality of instrument’s grounding will provide weighing accuracy and safety of your scale. If
energy condition of your plant is bad, prepare a special power line and grounding.
3. All required electrical connections should be done as described below.
The electrical connectors are located at bottom of the scale as seen below.
The AC/DC adaptor plug will be inserted for 12 VDC instruments.

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017 Page 9 of 36
Power Supply 1stRS 232C 2ndRS 232C Foot switch input
RS 232C Port Connections
W31 has 2 pcs RS 232C port on the RS 232C connector. Their usage and specifications are shown in the
table below. Refer to Section 11 of the manual to setup this interface.
Usage Interfacing with Printer, PC, PLC or remote display connection.
Data formats You will find the data format details on
Page28
.
Baud rate 1200 / 2400 / 4800 / 9600 (Default) / 19200 / 38400 bps
Length and parity 8 bit no parity
Start / Stop bits 1 start bit and 1 stop bit
Table 5.1 - RS 232C Serial Interface Specifications
RS 232C connector Definition Pin number
(Male)
RXD1 1
TXD1 2Serial Port-1
GND 3
GND 3
Serial Port-2 TXD2 6
4
Foot Switch Input 8
Table 5.2 - RS 232C connector
RS 232C serial connection is done with two wires as indicated below in Figure 5.1.
Figure 5.1– RS 232C connection with a printer
RS 232C serial connection is done with three wires as indicated below in Figure 5.2 ( only Serial port-1 ).

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017 Page 10 of 36
Figure 5.2 – RS 232C connection with a PC
Foot Switch Input
The foot switch can be used to tare the scale by foot switch. You may connect the foot switch as indicated
below in Figure 5.3 to the taring input if the scale is equipped with this input.
Figure 5.3 – Foot switch connection
Step 3: Power Supply Connection and Grounding
The weighing instruments measures very low signal levels. The quality of the power line will determine the
accuracy and safety of your measuring system. It is very important that the instrument should not share
power lines with noise-generating parts such as heavy load switching relays, motor control equipment,
inductive loads, etc. If condition of the power line in the plant is poor, prepare a special power line and
grounding.
The 12 VDC instrument shall be used with regulated 12 VDC adaptor supplied with the instrument. Connect
the AC/DC adaptor to the scale before plugging the adaptor to the power line.
Before connecting the power supply, check that voltage written on the AC/DC adaptor is same as the local
power supply. If it is not, do not connect the scale, and contact your authorized representative. If voltage is
correct, connect the plug on the power cable to the power supply.
The protected ground shall be connected to the 230 VAC powered instrument against the safety and
electrical disturbances.
After the scale has been connected, it performs a display test. When the display shows zero, the scale is
ready for operation.
Step 4: Check scale performance

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
Page 11 of 36
Warning:
1. Scale set-up and calibration should be done according to your application. Please read this
document carefully and select parameter values which will fit your application before
programming the instrument.
2. You cannot change Set-up parameter values and calibration after sealing the instrument in legal
usage. Be sure proper adjustments you done before sealing the scale.
Check scale accuracy by loading it with test weights before usage. If there is any error, call the authorized
technician to adjust the scale.
Step 5: Advanced functions setting
Advanced functions shall be adjusted for your application for having best performance from the scale as
described on Page 21.
After following 4 steps above, you can start to operate with your scale if it is connected to the power line.
Step 6: Charging the battery
Battery charging in first usage is recommended for long battery life. Do not disconnect the instrument from
power line at least 12 hours for charging the battery.
If you do not use the instrument long time, recharging the battery every month is recommended.

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
Page 12 of 36
6. BASIC WEIGHING
Press On/Off key to switch on front of the scale. Scale activates the display for a few seconds then scale
model name and version are displayed before display testing. After start up cycle, weight value is displayed.
[ E E E ] prompt at power on announces zeroing range at power on is exceeded or pan was not unloaded at
power on . The pan should be unloaded before power on. ( Page 35 )
Figure 6.1 - LCD Display segments and Weight display.
Place the object you desire to weight over the plate. Weight of the object is displayed on the display after
disappearing symbol.
Zeroing
Zeroing is done to compensate deviations from zero of the unloaded pan.
1. Clean the unloaded platform and check if there is anything touching the platform.
2. Press Zero key to compensate zero deviation. Zeroing is done if the scale is stable and in
zeroing range.
3. sign is appeared to indicate that zeroing is done and the scale is at center of zero.
4. If zeroing is not done properly, wait for sign until disappear and press Zero key again.
Taring
Taring is done to deduct the container weight and to see loading in the container or unloading the container
as a net weight. W31 is programmable for 3 type of tare function: Multi tare, Tare/Clear, Automatic tare (
Page 27 ).
Warning: Tare value cannot exceed maximum scale capacity. Scale capacity in Net is subtraction of
maximum capacity to tare weight. Capacity in Net = Maximum capacity – Tare weight.
Multi taring
1. Place the container on the platform and press Tare key.
2. Display value is zeroed and (net weight) symbol appears.
3. Place the material in to the container and read net weight.
4. Tare value is used until either a next tare or pressing Tare key after unloading the pan or until
zeroing the scale.
Tare / Clear
1. Place the container on the platform and press Tare key.
2. Display is zeroed and (net weight) symbol appears.
3. Place the material in to the container and read net weight.
4. Press Tare key to clear tare. Or press Zero key after unloading the platform.

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
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Auto Tare
This function allows taring automatically after loading the pan in gross operation without pressing Tare key
if the load is bigger than 20e. After unloading the pan, indication goes back to gross. To activate auto tare
function, refer to Advanced functions ( Page 27 ).
1. Place the container on the platform.
2. Scale activates tare function automatically after stabilization.
3. Place the material inside the container for net weighing.
4. After unloading the pan, the scale starts to indicate in gross.
Gross / Net Function
You can use Gross/Net function at any time to switch the display between net and gross weight after G/N
key is pressed, the display shows gross weight for a few seconds and then automatically goes back to net
weight indication.
Printing
You may connect your indicator to the printer as indicated in Figure 5.1 and adjust W31 RS 232C serial data
output related parameters and printer parameter to select the printout ticket form from the table below.
Press Enter key to print the ticket when the indication is stable after loading. As you see in this table,
printout contains different data depending on the operation mode ( Page 30 ). For 16 character printers,
select small printer format which has abbreviated data names.
Wide size printouts ( Page 30 ) :
Ticket
Basic Weighing
Piece Counting
Check Weighing
Form 1
Form 2
Form 3
Form 4

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
Page 14 of 36
Narrow size printouts ( Page 30 ) :
Ticket
Basic Weighing
Piece Counting
Check Weighing
Form 1
Form 2
Form 3
Form 4
Total memory at weighing
To accumulate weighing values, put the object on the platform, when display show stabilized weight value (
symbol off ), press M+ key to add weight value to total.
Accumulation is done with displaying accumulation quantity. Following weighing will be accumulated by
pressing M+ key.
To follow total value, press MR key and display will indicate accumulated value.
To print accumulation value, press Enter key when accumulation is on the display. To erase accumulation,
press MC and accumulated value will be deleted after your confirmation.

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
Page 15 of 36
7. PIECE COUNTING
W31 scale has a number of powerful features in count weighing as described in this section. Press
Esc/Counting key to enter piece counting operation. Last used average piece weight ( APW ) value is valid in
counting. APW default is increment of the scale at power on.
Sampling
The scale counts the pieces on it by using calculated average piece weight ( APW ) of the item. In sampling,
W31 measures a certain number of the pieces total weight in very high resolution and divides it by number
of pieces (so-called sampling quantity) to find average piece weight ( APW ). Based on this calculated
average piece weight, counting can be carried out.
Sampling should be done very carefully for correct counting.
1. Empty the pan and press Zero key until symbol is seen on the display.
2. Press Esc/Counting key longer than a second until [ 10] or any other reference number of
pieces seen on the display. This value is quantity of pieces you can place on the platform for
sampling.
3. If pieces are small or piece weights are not very close to each other, sampling in high quantity is
recommended to increase counting accuracy. To do it, press ▲ to change sampling quantity as
20, 30, 50 or 100. You may press ▼ key for decrease quantity.
4. When exactly counted quantity is placed on the platform, press Enter key.
5. Display will stop flashing after sampling and start to display quantity on the pan.
Counting without container
1. After sampling press Zero key, sign should be appear.
Or call APW of the item from CLU memory ( Page 17 ).
2. Place the pieces you want to count on the weighing pan,
3. Display will show total quantity of pieces.
If you want to accumulate sequential counting, press M+ key ( Page 17 ).

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
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To return to weighing mode, press Esc/Counting key. Last used APW can be used at following piece
counting at following piece counting.
Counting pieces into a container
1. For counting in the container, place the empty container on the pan and tare with the Tare key.
After taring the scale ( the sign should be appear on the display ).
2. If need be, you may perform sampling in the container after taring.
3. You can add parts in to the container for counting parts in it.
Note: If automatic taring function is active, you need not press Tare key, because the scale is taring
automatically as soon as the container is placed on the weighing pan.
Counting pieces out of a container
1. Place the full container on the weighing pan and then press Tare key to tare the scale
(the sign should be appear).
2. Press Esc/Counting key to go in to the piece counting mode.
3. If need be, perform sampling as
a. Press Esc/Counting key more than one second until sampling quantity seen.
b. Change sampling quantity by pressing ▲ or ▼ keys.
c. Remove sampling quantity of pieces from the weighing container and then press Enter
key for sampling.
d. The scale starts to count by displaying number of pieces after sampling by a minus
sign.
Or select the item APW from CLU memory ( Page 17 ).
4. Take pieces out from the container how much you want.
5. The scale displays number of pieces removed by a minus sign.
6. Press Tare key for following counting.
Press Esc/Counting key to go basic weighing operation.
APW optimization
Sampling in high quantity gives more accuracy result although high quantity is not easy to count by hand.
APW optimization strongly recommended to you for faster counting in high quantity sampling for more
accurate piece counting.
You may follow the procedure below for APW optimization as;
1. First count low quantity, for example 10 pcs and do sampling with 10 pcs.
2. Then count on the scale 2 times of sampled quantity. In our example count 20 pcs on the pan and
apply sampling for 20 pcs.
3. Then count 50 pcs on the scale and perform sampling with 50 pcs.
4. Then you may count 100 pcs on the scale and may perform sampling with 100 pcs.
After each APW optimization, piece counting accuracy will increase.
Total memory at counting
You can accumulate quantities of sequential counting and can see total value in the piece counting

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
Page 17 of 36
accumulator ( CAD ).
1. For counting accumulation, press M+ key when quantity is displayed the display and the scale is
stable. You will follow accumulation number on the display as [ Cad001 ].
2. Place another batch on the scale for counting. After second time loading press M+ key again to
add second counting number to total [ Cad002 ].
3. You can add following piece counting values to accumulation memory by pressing M+ key.
The accumulated total count can be seen by pressing MR key.
The total count can be printed by pressing the Enter key when total count is displayed.
To delete accumulation, press MC key when count accumulation is displaying.
APW Recording to the memory after sampling
Up to 100 average piece weights APW of different materials can be saved in to the CLU memory. For saving
APW in to the CLU memory, press ADV key in piece counting mode more than one second to access CLU
memory data saving as seen below.
Press ▲ and ▼ keys to change the flashing digit or press ► and ◄ to shift to the other digit to
change it with ▲ and ▼ keys. After accessing the desired memory code, press Enter key for saving.
The scale goes back to counting operation automatically.
Counting with preset APW record
To access to memory database press Esc/Counting key long time in counting mode or in weighing mode
and then ► key. Press Enter key after accessing the CLU memory code with navigation keys.

W31 Industrial Scale, User Manual, Rev. 1.3, April 2017
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8. CHECK WEIGHING (+/-)
This function is used for classifying products as under, in tolerance and over weight. A Check weighing bar
under the weight display helps to the operator to indicate deviation from target weight. The Figure 8.1
indicates check weighing bar appearing if product is in tolerances or not. The scale is also programmable for
acoustic check weighing warning ( Page 22 ).
Check weighing operation requires nominal weight and tolerance values entry in to the PLU memory.
Figure 8.1 – Check weighing bar
Data entry to Check weighing memory PLU and Checking in quantity memory ALU
Warning: PLU memory data entries are done in power on unit.
W31 scale has 100 check weighing PLU memory for different materials and 100 ALU memory for checking in
quantity at piece counting. Data entries to the PLU / ALU memory are done in Advanced functions menu by
pressing ADV key more than one second. And follow the diagram below to entry data in to the PLU / ALU
memory. Here Target is nominal value of the material. Hi and LO are the “+ tolerance” and “– tolerance” of
the material in sequence. For example, if the target is 1000 g and the weight limits are 950 and 1100 g in
checkweighing, Target = 1000 g, Hi = 100 g and Lo = 50 g values are entered. The values are entered in
quantity to the ALU memory entry.
PLU / ALU code is increased or decreased by pressing ▲ or ▼ keys. PLU / ALU code Target, Hi and Lo
value’s digit can be selected by pressing ► or ◄ keys and the digit value can be increased or decreased
by pressing ▲ or ▼ keys.