Excell PWH3 User manual

U
Us se er r M Ma an nu ua al l
I
In nd di ic ca at to or r
PWH3
© Excell Precision Limited 2015. All rights reserved Worldwide.
The information contained herein is the property of Excell Precision Limited and
is supplied without liability for errors or omissions. No part may be reproduced or
used except as authorised bycontract or other written permission. The copyright
and the foregoing restriction on reproduction and use extend to all media in
which the information maybe embodied.

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Table of Contents
Special Notice ..................................................................................................................................3
Before Using the Scale...................................................................................................................4
Instructions for Use.........................................................................................................................4
Preparing to Use the Scale............................................................................................................4
Chapter 1 Introduction....................................................................................................................6
1-1 Product Features ..................................................................................................................6
1-2 Specifications ........................................................................................................................6
1-3 ProductAppearance ............................................................................................................6
1-4 Display Description..............................................................................................................7
1-5 Power Supply........................................................................................................................7
1-6 Keypad Function................................................................................................................... 8
1-7 Self-Test Mode....................................................................................................................10
1-8 Error Messages ..................................................................................................................11
1-9 Weight Units........................................................................................................................11
Chapter 2 Configurations.............................................................................................................12
Configuration Workflow...............................................................................................................12
2-1 GeneralFunction Setting ....................................................................13
2-1-1Auto Backlight Function Setting ..................................................14
2-1-2Auto Power-off Timer Setting ......................................................15
2-1-3 HI/LO/OK Settings .........................................................................16
2-1-4 Restore to the Default Settings ....................................................17
2-1-5 Noise Filter Settings .....................................................................18
2-1-6 Hold FunctionSettings .................................................................19
2-1-7 Auto Unit WeightAveraging Setting
...........................................22
2-1-8 Record Last Zero ...........................................................................22
2-1-9 Foot Switch Settings (Option).....................................................23
2-1-10 F KeyFunctionSettings .......................................................24
2-1-11 Zero Setting .................................................................................24
2-2 External Weight Calibration ...................................................................25
2-3 RS232 Serial Interface Settings ..........................................................26
2-3-1 Baud Rate Settings .....................................................................27
2-3-2 CommunicationProtocol Settings ..........................................28
2-3-3 Output Format Settings ...............................................................29

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2-3-4 Continuous TransmissionSettings ............................................31
2-3-5 Selectionof the Continuous Transmission Rate ...........................32
2-3-6Auto Transmissionat Zero ..........................................................33
2-3-7 ResetAuto Transmission ...............................................................34
2-3-8 Output Condition Settings
.............................................................35
2-3-9 RS232 6/7 Digits Setting ...............................................................36
2-3-10 RTC Adjustment .............................................................37
2-3-11 Y/M/D Print Layout Selection ........................................................37
2-3-12 RS485 ID Input (Option) ................................................................38
2-3-13 Line Feed Input ............................................................................38
Appendix 1 ASCII Code Table....................................................................................................43
Appendix2 7-Segment Display Characters.............................................................................44
Appendix3 Wiring Instructions ..................................................................................................45

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Special Notice
While installing the load cell,power cord hookup or replacing a new rechargeable
battery, the indicator housing must be opened. It must be done by a technician assigned
by your electronic indicator provider to avoid affecting the waterproof ability of this indicator.
Before opening the housing, make sure the indicator is dry, if there is any liquid onit,
please wipe it witha cleancloth.
HOW TO INSTALL THE HOUSING
After installing the load cell, power cord hookup or replacing a new rechargeable battery,
the housing must be screwed bythe assigned order as shownbelow.Screw lightly first,
then screw them tight using a 12 kgf-cm torsion.
P.s. Please use a torsion-adjustable screw driver.
Screwing order:
1
2
3
4
5
6

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Before Using the Scale
In order to use this scale correctly, we suggest that you read this manual carefully.
Instructions for Use
1. The load placed on the weigh pan must NOT exceed the maximum weighing capacity
of the scale.
2. Protect the scale from high temperatures.
3. Avoid objects impacting with the scale. Do not drop loads onto the scale or subject the
weighpan to anystrong shock loads.
4. Please operate or charge the scale in an open area. Do not squeeze the power cord to
avoid wire on fire.
Preparing to Use the Scale
1. Locate the scale ona firm level surface free from vibrations for accurate weight
readings.
2. Adjust the four levelling feet (if fitted) to setthe scale pan level.
3. Avoid operating the scale in direct sunlight or drafts of any kind.
4. If possible avoid connecting the scale to ac power outlet sockets whichare adjacent to
other appliances to minimise the possibility of interference affecting the performance of
the scale.
5. Remove any weight that might be on the weighpanbefore the scale is switched on and
avoid leaving weight on the pan for long periods of time.
6. Allgoods weighed should be placed in the centre of the weighpan for accurate
weighing. The overall dimensions of the goods being weighed should not exceed the
dimensionof the weighpan.
7. Once the scale has been powered on, it will go throughanLCD display test and it is
ready for use when the display shows zero.
8. The scale requires 15~20 minutes warm up before operation to ensure best accuracy.
9. Please note when the symbol keeps flashing on the screen, the batteries need to
be charged.
10.Introductionof Storage Battery
Thank you for purchasing EXCELL WEIGHING INDICATOR,
to help use the product properly, operate smoothly, and
extend its life cycle, please read this manual carefully.

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No burning
Caution Corrosion
Due to the storage battery adopt the advanced free-maintaining technique, customers
need not to replenishelectrolyte.
The scale should be recharged every 3 months to prevent failure of the internal
rechargeable battery.
1. The batteryshould be charged for 8~10 hours.
2. The temperature of batteryshould below 45℃.
Maintaining
1. Please do not discharge with over-current when using the battery. Please charge the
batteryafter discharging current.
2. Please take down the battery when the scale is not used for a long time or break the
connection of cathode.
3. Do not short the battery terminals to check whether there is current. Please check
whether the connection point is firm to guarantee good connection.
4. The battery should be replaced by specialized person. No reverse-battery or the
product will be damaged.
a) Anode of battery should be connected with Anode of product battery（usually red
cable）
b) Cathode of battery should be connected with Cathode of product battery (usually
brown cable or black cable)
c) See the picture following
Safety warnings
1. The electrolyte ofbattery is caustic whichcauses metal, cotton, etc to corrode.
2. The hydrogen will be resolved when using or charging the battery and it will cause
explosion when approaches fire.
Brown cable(or black cable)
connected withAnode of
battery
Red cable connected with
Cathode of battery
Warning explosion
Children faraway

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Chapter 1 Introduction
1-1 Product Features
Sealed to IP68, (Only use cables of 3mm~5mm diameter to ensure
correct sealing of the cable glands)
Kilogram (kg) and pound (lb) weighing modes
Full range tare; Pre-tare;Auto zero tracking; Sampling counting; Gross/Net indication
Adjustable gravity value
Low power indication and auto power off
AC/DC power in and rechargeable battery.
Built-in RS-232
Options: pressure release valve, foot switch
1-2 Specifications
Analogue Input: Input Sensitivity0.3V/d (Min.)
Input Signal Range: -1mV~+14mV
Input Zero Range: -1mV~+5mV
Load Cell Excitation: 5V DC
Load Cell Drive Capacity: Up to 8 x350load cells
Non-linearity: 0.01% of full scale
A/D Resolution: 500,000 counts (Maximum)
Operating temperature: -10℃~ 40℃
1-3 Product Appearance
256 mm
170 mm
90 mm

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1-4 Display Description
HI
:
Upper limit
“”indications description
OK
:
Value between HI and LO
1
:
(STABLE) stable indication
LO
:
Lower limit
2
:
(GROSS) gross weight indication
kg
:
Unit “kilogram”
3
:
(
Pcs
) unit weight insufficient indication
lb
:
Unit “pound”
4
:
( PT ) pre-tare indication
t
:
hk tael
5
:
(Hold) weight hold indication
Pcs
:
Counting mode indication
6
:
“GN”、“dwt”、“carat” 、”M+” unit indication
0
:
Zero point indication
7
:
“oz” or “viss” unit indication (set as needed),
or no unit indication
Net
:
Net weight indication
:
Low Power indication
1-5 Power Supply
Power Supply Selection
➀6V / 4.5Ah rechargeable battery
➁Input 110VAC or 230VAC ±15% ; Output 10VDC/1A adaptor
Power Consumption
Approximately DC 14 mA (Indicator)
Approximately DC 24 mA (Indicator + Display backlight)
Charging Voltage
DC 10V/1A output adaptor
(RS-232 and load cell cables size
3mm~5.5mmdiameter to ensure
correct sealing of the cable glands)
Power supply connector
Load cell cable entry
RS-232 cable entry

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Low Battery Warning
Please note when the ( ) symbolkeeps flashing on the display, the internal battery
should be recharged.
The scale will turn off automatically after a few hours when the lowbattery warning
symbolshows up. The scale must be fully charged, before operating again.
When the battery status indication is full, the power is about 6.1V; Each block is about
0.2V; When the battery warning symbol shows up, the power is about 5.4V.
1-6 Keypad Function
1OFF KEY
Press the OFF keyto switch the indicator off.
ON|ZERO KEY
When the power is off, press ON|ZERO key to switch the indicator on.
When the power is on, press ON|ZERO keyto return to zero.
Zero Range : OIML&NTEP is ±2% F.S., and Sri Lanka is ±3% F.S.
1TARE|PT KEY: Tare / Pre-tare key
To TARE:
Place the container onto the scale, until the weight value is stable, press TARE | PT key for
zero return and the NET indicationis shown on the display. Place the object onto the
container and the displayshows the net weight value of the object. Remove both object
and container, and negative value of the container will show on the display. Press TARE | PT
keyagain to clear “tare value”. The scale returns to zero and NET indication goes off .
Tare canbe continuouslydone until tare value=full load capacity
Continuous Tare Press TARE | PT key for continuous weight increase/decrease on
platter.
If there is Tare, the pre-tare cannot be done. If there is pre-tare first, and the tare weight
more than pre-tare weight, Tare can be done.
No Tare canbe done under gross weight display mode.
To PRE-TARE:
Press TARE | PT key, use keypad to input pre-tare weight. When the cursor flashes on the
rightmost digit, press TARE | PT key again to complete.
Pre-tare mode, keypad function as followed:
ON|ZERO upward key (0~9 digit entry) NET | GROSS move cursor leftward
UNIT downward key (0~9 digit entry) TARE | PT move cursor rightward
UNIT KEY
Press the UNIT keyto switch weight units; the display icons will indicate the active units.
NET | GROSS KEY
In the Tare mode, the screen displays the “ TARE ” icon; press the NET | GROSS keyto switch
between the “Net value” and the “Gross value”. When the ”GROSS” arrow

shows up,
the Gross Weight in the screen = Tare weight + Net weight, meanwhile, keys except the
1 NET | GROSS key, have no response.
1 M+|PRINT KEY
Totalization function. M+/Print functionis available when RS232 is onkeypad transmission
mode. ( output).

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Pcs
This keyis a composite key, while totalizationis shown and weight returns to net zero,
press M+ key to erase memory. RS232 will output MC print format ( output).
If there is new weight added on platter（it is less than 20 divisions inBrazil version, no
accumulation ）, a new item will be added to totalization. If this weight is not taken off,
nothing canbe added to totalization.Display will show the totalization numbers for one
second, thenshow net weight for one second, then the scale returns to the current
weight, and prints out the last item for totalization.
To clear totalization data, press M+ key to let displayshows up totalization numbers,
then press the M+ | PRINT keyagain, to clear totalization data. RS232 will print out
totalization numbers, total weight, etc.
P.s. Weight must return to net zero if to perform clear function.
F KEY
Function key (In , select F keyas “MC”or “HR”)
Foot Switch Mode
This functionis optional. Use to select TARE|PT keyas “ZERO”or “PRINT”key
If “PRINT” key is set ( = 10/11), all totalization data will be printed out, and
totalization will be cleared.
If it is Brazil versionand foot switchis setas Print function, it has totalization function
and print function.
Simple Counting Mode
Use UNIT key to switch unit to Pcs, to go into simple counting mode.
1. Use NET|GROSS key to select a sample number from “10, 20, 50, 100, or 200”. Display
will show , , , , inansequential order by pressing
NET | GROSS key.
2. Select a sampling number, and put appropriate weight onplatter, and press UNIT key.
Displaywill show “ ”. The scale will go into counting mode after weight is
stable, and display will show the sample number.
Unit weight insufficient ( ): Sample unit weight is less than 0.2d or total sample
weight is less than 20d (d=division)
While sampling, if there is insufficient sample or unit weight insufficient indication “”,
the scale is still usable, but there maybe slight inaccuracy.
After Power-off, the scale automatically memorizes the sampling number, and it is
available when “Pcs”unit is selected next time.
If the setting is “automatic average unit weight “, if the object on platter > the previous
sampling number more than 5 pcs, and also < less than100% the previous sampling
number, the scale will execute unit weight calibrationautomatically.

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1-7 Self-Test Mode
Whenpower is off, hold NET|GROSS keyand press ON|ZERO key, Wait till display shows
to enter “Self-Test Mode”.
INTERNAL VALUE MODE ( must hook up full-bridge Load Cell to test)
Press TARE|PT keyto enter,and the displayshows internal value
Please check the internal value is within normal range is 0 ~ 400000 (no load)
Check whether the backlight is on
Press ON|ZERO keyto back to the last screen, the displayshows
KEYPAD TEST MODE
Press TARE|PT key to enter, displayshows
Keypad’s internal code: TARE|PT key = 06, UNIT key= 05, F key = 02
1 NET|GROSS key=04
Press ON|ZERO keyto back to the last screen , the display shows
FIRMWARE VERSION DISPLAY MODE
Press TARE|PT key to enter , display shows the firmware version ,
Press TARE|PT key again, the display shows maintenance number
for 2 seconds
Press ON|ZERO keyto back to the last screen, displayshows
BACK TO THE LAST SCREEN
Press TARE|PT key to exit self-test mode, the scale will re-power onautomatically.
Press UNIT key
Press ON|ZERO key
Press UNIT key
Press UNIT key
Press UNIT key
Press ON|ZERO key
Press ON|ZERO key
Press ON|ZERO key

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1-8 Error Messages
The EEPROM is not working correctly.
The EEPROM is not set yet, or the circuit on PCB is broken.
Zero is higher than the zero range when switching the indicator on.
Zero is lower thanthe zero range whenswitching the indicator on.
A/D value is unstable.
The weight of the object is over 9 divisions of the maximum capacity .
The weight of the object is under -1/6 maximum capacity.
ADIC value is over the maximum range.
The scale is not in level status.
(Only available with level detector equipped)
1-9 Weight Units
kg
1 g = 0.001 kg
g
1 g = 1 g
lb
1 g = 0.002204623 lb
lb/oz
1 g = 0.03527396 oz
oz
1 g = 0.03527396 oz
GN
1 g = 15.432358 GN
dwt
1 g = 0.6430149 dwt
ct
1 g = 5 ct
hk.tael
1 g = 0.02645546 Hk.catty
viss
1kg = 0.612245 viss

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Chapter 2 Configurations
Configuration Workflow
In the weighing mode, press NET|GROSS keyand ON|ZERO keys at the same time to
enter the configuration mode.
The LCD shows .
Overall workflow of the Advanced Function setting mode:
General Function Setting Mode
External Weight Calibration
RS232 Bi-direction Function Setting
Exit the Advanced FunctionSetting Mode
Refer to the following sections for the detailed operation
procedures of each function setting.
Press UNIT key
Press ON|ZERO key
Press UNIT key
Press UNIT key
Press UNIT key
Press ON|ZERO key
Press ON|ZERO key
Press ON|ZERO key

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2-1 General Function Setting
Workflow of the General Function setting:
Press TARE|PT key
keyin the parameter
“00 ~ 13”
Keyin “00”and press
1 TARE|PT key to return to
the Advanced function
setting menu
Returnto the Advanced FunctionSetting Mode Menu
Automatic Backlight Function Settings
Automatic Power-off Timer Settings
Hi/Lo/OK Settings
Restore the Default Settings
Noise Filter Settings
Hold Function Settings
Auto Unit Weight Averaging Setting
Reserved
Reserved
Record Last Zero
Foot switch on/off settings (Option)
F key function settings
Zero Setting
ON|ZERO key Upward key (0~9 digit entry)
1 UNIT key Downward key (0~9 digit entry)
1 TARE | PT key Move cursor rightward
1 NET | GROSS key Move cursor leftward

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2-1-1 Auto Backlight Function Setting
Select in the general functionsetting mode to change the
backlight functionsetting.
LCD displays the last status
Default setting = off
Press TARE | PT key
Use ON|ZERO or UNIT key
to select function “on”or “off
Press TARE | PT key to go
back to the advanced
function setting menu
On backlight functionis on
Off backlight function is off
Auto backlight function
When the weight is over 10d, the display backlight willbe on. After the weight
is stable for 10 seconds or when the scale returns to zero, the display
backlight switches off.
ON|ZERO key Upward key (0~9 digit entry)
1 UNIT key Downward key (0~9 digit entry)
1 TARE | PT key Move cursor rightward
1 NET | GROSS key Move cursor leftward

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2-1-2 Auto Power-off Timer Setting
Select in the general functionsetting mode to change the
automatic power-off timer setting.
LCD displays the last status
Default setting = 0 (No auto power-off)
Auto power-off function
When the weight on weighpanis less than 10d or keeps idle for the set time, the
scale will automatically switch off.
Press TARE | PT key
Use ON|ZERO or UNIT key
to keyinparameter
Press TARE | PT key to
go back to the
Advanced function
setting menu
Automatic power-off timer setting
Use ON|ZERO or UNIT key to key in
parameter
0 No auto power-off
1 When the scale is idle for 1
minute, the scale
automatically switches off
2 When the scale is idle for 2
minutes, the scale
automatically switches off
9 When the scale is idle for 9
minutes, the scale
automatically switches off
ON|ZERO key Upward key (0~9 digit entry)
1 UNIT key Downward key (0~9 digit entry)
1 TARE | PT key Move cursor rightward
1 NET | GROSS key Move cursor leftward

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lb
lb
lb
lb
2-1-3 HI/LO/OK Settings
Select in the general function setting mode to set the HI/LO/OK
function.
When the high limit and low limit are both set as “0”, the Hi/Lo/OK function is disabled.
LCD displays the last status
Press TARE | PT key
Keyin the desired high
limit value
Press TARE | PT key
Keyin the desired low limit
value
Press TARE | PT key
Keyin the parameter
setting for alarm
Press TARE | PT key
LCD displays the last status
LCD displays the last status
.
.
.
.
Alarm setting
(a)(b)(c)
The definition of a, b, c positions:
(a) 1 = beep sound on
0 = beep sound off
(b) 1 = beep sound on when stable
0 = beep sound on when unstable
(c) 1 = beep sound on when the weight is
between high and low limits
0 = beep sound on when the weight is
not between high and low limits and
higher than 10d
ON|ZERO key Upward key (0~9 digit entry)
1 UNIT key Downward key (0~9 digit entry)
1 TARE | PT key Move cursor rightward
1 NET | GROSS key Move cursor leftward

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2-1-4 Restore to the Default Settings
Select in the general functionsetting mode to restore to the
default settings.
The defaults are included the following:
1) External weight calibration
2) HI/LO/OK setting values
3) Noise filter setting (External)
4) Sampling settings for the counting function
Return (Cancel the
restoration)
Restore the default
setting
Press TARE | PT key
Use ON|ZERO or UNIT key
to select “return”or “format”
Press TARE | PT key
ON|ZERO key Upward key (0~9 digit entry)
1 UNIT key Downward key (0~9 digit entry)
1 TARE | PT key Move cursor rightward
1 NET | GROSS key Move cursor leftward

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2-1-5 Noise Filter Settings
Select in the general functionsetting mode to set the noise filter
settings.
Returning to the zero point setting
Use ON|ZERO or UNIT key to keyin the
parameters or zero point
Default setting = 0
0 No skip 5 skip 5d
1 skip 1d 6 skip 6d
2 skip 2d 7 skip 7d
3 skip 3d 8 skip 8d
4 skip 4d 9 skip 9d
When the weight on the scale is over 1/3
full capacity, the functionis on.
Digital switch & Stabilization range setting
LCD displays the last parameter setting
Filter parameter setting
LCD displays the last parameter setting.
Returning to zero point setting
LCD displays the last status
Filter parameter setting
Use ON|ZERO or UNIT key to keyin the
parameters.
Default setting = 5
Parameter 0 ~ 9.
The larger the number is, the faster the
filter responds. Fast response can lead to
weighing instability.
Parameter 9 the AD value is not filtered.
InputAD value = Output AD value
Digital switch & Stabilization range setting
Use ON|ZERO or UNIT key to keyin the
parameters.
Default setting = 0
Parameter 0 ~ 9, the larger the number the
more stable the weight.
Press TARE | PT key
Use ON|ZERO or UNIT key
to keyin the parameters
Press TARE | PT key
Use ON|ZERO or UNIT key
to keyin the parameters
Press TARE | PT key
Use ON|ZERO or UNIT key
to keyinparameters
Press TARE | PT key
ON|ZERO key Upward key (0~9 digit entry)
1 UNIT key Downward key (0~9 digit entry)
1 TARE | PT key Move cursor rightward
1 NET | GROSS key Move cursor leftward

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2-1-6 Hold Function Settings
Hold function setting
Use ON|ZERO or UNIT key to keyin the
parameters
Default setting = 0
0 Hold function disabled
1 “Peak hold”mode
2 “Stable hold 1”mode
3 “Stable hold 2”mode
4 “Animal scale hold 1”mode
5 “Animal scale hold 2”mode
Hold function setting
LCD displays the last parameter setting
Press TARE | PT key
Use ON|ZERO or UNIT key
to keyin the parameters
Press TARE | PT key
ON|ZERO key Upward key (0~9 digit entry)
1 UNIT key Downward key (0~9 digit entry)
1 TARE | PT key Move cursor rightward
1 NET | GROSS key Move cursor leftward
= Hold functiondisabled
= “Peak hold” mode
The scale keeps displaying the maximum weight when the weight is continually
changing. Press any key to exit this mode.
=“Stable hold 1” mode
When the weight is stable, the LCD shows the current weight value. Press any
key to exit this mode.
= “Stable hold 2” mode
When the weight is stable, the LCD shows the current weight value. When the
weight returns to zero (<10d), the hold mode is cancelled automatically.
= “Animal scale hold 1” mode
When no load, the display shows “- - - - - -”. After the animal or object is on the
platter and the weight is stable, the display shows the weight value and hold.
When the animal or object is off the platter, the display shows “ - - - - - - ”and the
hold functionis off. If the weight is hardly stable, display shows the average
weight in 10 seconds and holds the status, until the weight is less than 10e and
displayshows “- - - - - -”or press anykey to calculate a new weight.
= “Animal scale hold 2” mode
When no load,the display shows “0.000”. After the animalor object is on the
platter and the weight is stable, the display shows the weight value and hold.
When the weight added or removed on the platter is larger than the weight set in
hold 5, the hold function release and to calculate a new weight. If the weight is
hardlystable, the display shows the average weight in 10 seconds and holds the
status. In this mode, ON | ZERO and TARE | PT keys are useless.