Western Scale M1 User manual

M1 INDICATOR
TECHNICAL MANUAL
SOFTWARE RELEASE 1.41, 09/2009
Copyright © 2008, 2009 Western Scale Co. Limited. All rights reserved.
Published by: Western Scale Co. Limited.
Information in this Installation / Technical Manual is subject to change without
notice due to correction or enhancement. The information described in this
manual is the property of Western Scale Co. Ltd. No part of this manual may be
reproduced or retransmitted in any form, without the expressed written
permission of Western Scale Co. Ltd.
Western Scale Co. Limited
1670 Kingsway Avenue
Port Coquitlam, B.C.
CANADA
V3C 3Y9
Tel: [phone]
Fax: [phone]
[email protected]
www.westernscale.ca
FOR TECHNICAL SUPPORT REGARDING THIS PRODUCT, PLEASE CALL
YOUR AUTHORIZED WESTERN DEALER:

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TABLE OF CONTENTS
INTRODUCTION ............................................................................................................................. 2
Safety .......................................................................................................................................... 2
Features ...................................................................................................................................... 3
Specifications .............................................................................................................................. 3
DISPLAY & ANNUNCIATORS ........................................................................................................ 4
Weight Display ............................................................................................................................ 4
Annunciators ............................................................................................................................... 4
KEYPAD & SCALE FUNCTIONS.................................................................................................... 6
INSTALLATION ............................................................................................................................... 8
Pre-Installation ............................................................................................................................ 8
Opening the M1 Enclosure.......................................................................................................... 8
Load Cell Wiring .......................................................................................................................... 9
Communications Wiring (RS 232)............................................................................................. 10
Remote Switch Wiring............................................................................................................... 11
Battery / Battery Replacement .................................................................................................. 11
Closing the M1 Enclosure ......................................................................................................... 12
Mounting Instructions ................................................................................................................ 12
START-UP..................................................................................................................................... 13
TIME & DATE ................................................................................................................................ 13
CALIBRATION MODE................................................................................................................... 14
Calibration Keys ........................................................................................................................ 14
Entering Calibration Mode......................................................................................................... 14
Navigating Calibration Parameters ........................................................................................... 15
Editing Calibration Parameters ................................................................................................. 15
Exit & Save Calibration ............................................................................................................. 15
CALIBRATION PARAMETERS..................................................................................................... 16
Scale Calibration Sub-block 1.x ................................................................................................ 16
Zero and Motion Settings Sub-block 2.x ................................................................................... 17
Tare Settings Sub-block 3.x ...................................................................................................... 18
Scale Filtering Settings Sub-block 4.x....................................................................................... 19
Serial Communications Sub-block 5.x ...................................................................................... 20
Serial Communications Sub-block 5.x (Continued) .................................................................. 21
Ticket Formatting Sub-block 7.x................................................................................................ 22
Additional Scale Functions Sub-block 8.x................................................................................. 23
Scale Diagnostics Sub-block 9.x............................................................................................... 24
QUICK SCALE CALIBRATION ..................................................................................................... 25
REMOTE DISPLAY MODE ........................................................................................................... 26
USER MENU ................................................................................................................................. 28
SEALING THE INDICATOR (LEGAL FOR TRADE) ..................................................................... 29
TROUBLESHOOTING & ERROR MESSAGES............................................................................ 30

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INTRODUCTION
Best suited to bench and floor scales, the M1 is a basic, 5 button indicator that
features the same high resolution and speed found in other Western instruments.
A compact stainless steel enclosure and large display make the M1 perfect for
virtually all light industrial weighing applications while advanced features like time
& date and programmable tickets ensure the M1 will continue to meet customer
requirements into the future.
Western’s continued dedication to durability, functionality, and versatility make
the M1 engineered for the diversity of the weighing industry.
The following User information is for the exclusive use of WESTERN Dealers and
Customers.
Safety
Installation, configuration, and servicing are only to be done by qualified Scale
Service Technicians as authorized by Western.
Power must be disconnected before servicing the unit. Disconnection from the
line voltage is done by disconnecting the mains plug.
This equipment must be connected to a socket-outlet with a protective earthing
connection. The socket outlet shall be installed near the equipment, and shall be
easily accessible.
This equipment is intended for connection to multiple RATED VOLTAGES or
FREQUENCIES. The switchover to the corresponding voltage is done
automatically by the equipment.
Scale Service Technicians handling M1 PCBs must observe
proper electrostatic discharge (ESD) handling procedures.
ATTENTION! Unauthorized installation and service of this unit
may void the warranty.
CAUTION! HIGH VOLTAGES are present inside the M1
indicator enclosure.

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Features
Simple Interface
•Large, easy to read LED display digits (7/8ths inch / 22 mm)
•Oversize keys with international symbols
•8 Annunciators display scale data
•MENU key accesses tickets and macro functions
Durability
•Compact enclosure with swivel bracket
•304 stainless steel construction
Excellent Serviceability
•Easy to navigate software menu and calibration
•Calibrate to any test weight value
•Terminal wiring
Advanced Capabilities & Quality
•MACRO II Ticket System
•Time & Date
•2 Year Warranty
•MADE IN CANADA.
Specifications
Excitation: 5 VDC, Up to 4 x 350 Ωor 8 x 700 Ωload cells
Analog Input Range: 0 - 20 mV
Resolution: 10,000d Class III / IIIL; 20,000d Class IIIHD (Can.)
1 million internal counts
Measurement Speed: 80 weight samples/sec.
Power: AC Input: 90 - 240 VAC
Consumption: 500 mW
Display: 6 digit, 7 segment LED weight display
8 LED annunciators
Communications: 2 Full duplex RS-232 serial ports
Configurable data format
Selectable output strings
Temperature Range: 14°F to 104°F / -10°C to 40°C
Approvals: NTEP & Measurement Canada approved

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DISPLAY & ANNUNCIATORS
The M1 uses a high intensity Light Emitting Diode (LED) display with a quick
update rate. The LED annunciator lamps communicate scale status and mode
information to the user.
Weight Display
•6 digits (7 segments each). Up to 3 decimal points.
•Negative weights are indicated by a minus sign (-) on the far left character.
Annunciators
CENTRE ZERO: The scale is within ±0.2 graduations of TRUE
ZERO.
MOTION: The scale is in motion.
GROSS: The scale is in GROSS weighing mode.
NET: The scale in NET weighing mode (a tare weight is stored)
M1 Display

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Annunciators (Continued)
lb: The scale is weighing in POUNDS.
kg: The scale is weighing in KILOGRAMS.
oz: The scale is weighing in OUNCES.
g: The scale is weighing in GRAMS.
Some annunciators may not function the same way in Remote
Display Mode. For more information, see page 26.

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KEYPAD & SCALE FUNCTIONS
The M1 indicator utilizes 5 keys for operator interfacing. To maximize indicator
functionality, some keys perform multiple functions.
Press the key: MENU - Cycles through the User MENU to access
additional Scale Tickets and functions (See Pg. 28).
Press & hold
the key (2 sec): UNITS - Toggles between Primary, Secondary and
Tertiary Weighing Units (if enabled).
Alternate Units may be selected or disabled in
Calibration Mode by Qualified Technicians.
Press the key: GR/NT - Toggles between GROSS and NET
weighing modes if a tare value is stored.
Press & hold
the key (2 sec): CLEAR - Clears any previously acquired tare
values. When used in Legal for Trade
applications, tares can only be cleared when
GROSS weight is at no load.
Clears Peak Hold (locked weight) values when
Peak Hold function is enabled.
M1 Keypad

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TARE: Acquires a tare value from weight on the scale
(Container, Box, etc.).
The indicator will not tare if:
•Weight on the scale is in MOTION;
•The scale weight is zero or negative;
When one of these situations occurs, the display
will briefly read “Err 2”.
The TARE button may be disabled in Calibration Mode
by Qualified Technicians.
ZERO: Sets the weight display to ZERO.
The indicator will not zero if:
•Weight on the scale is in MOTION;
•The weight on the scale exceeds the allowed
ZERO RANGE (Display reads “Err 4”).
PRINT: Transmits data string or scale ticket through COM1.
NOTE: If multiple tickets are programmed, Ticket 1 is
always assigned to the PRINT key.
In Canadian Legal for Trade applications, previous tare weights
must be cleared before a new tare weight can be acquired.

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INSTALLATION
Pre-Installation
It is always good practice to verify that your Western M1 indicator is complete
and undamaged upon receipt.
•Check over packaging for any signs of damage.
•Remove M1 from protective packaging and check for damage.
•Verify that the box includes the M1 indicator complete with:
oUser Manual;
oMounting bracket and thumb screws.
Opening the M1 Enclosure
1. Make sure the unit is disconnected from power.
2. Remove the screws from the back of the enclosure.
3. Lift the back cover away from the enclosure. Be sure to observe proper
ESD procedures when handling PCBs.
1. M1 PCB
2. Power Supply Module
3. Load Cell Terminal Block
4. Load Cell Jumpers (Sense)
5. Com1 Terminal Block
6. Com2 Terminal Block
7. 90 - 240 VAC Terminal Block
8. Grounding Posts
9. Back Cover (w/ Strain-reliefs
and power cable
10. Batter
y
1 2
6
5
4
7
8
9
3
8
CAUTION! HIGH VOLTAGE! Only trained personnel should
access any internal wiring and/or components.
10

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Load Cell Wiring
1. Ensure the unit is not plugged in or powered on.
2. Run the cable from the load cell or junction box through the strain-relief
and wire the indicator power to the Load Cell Terminal Block. See table
below:
LOAD CELL TERMINAL LOAD CELL WIRE
+EXC Positive Excitation
+SNS Positive Sense
+SIG Positive Signal
SHLD Shield Wire
-SIG Negative Signal
-SNS Negative Sense
-EXC Negative Excitation
Load Cell Jumpers
The M1 accommodates 4 or 6 wire load cells. When using 4 wire load cells (No
SENSE wires), the pins on JP1 and JP2 must be jumpered. For 6 wire load
cells, remove the jumpers. See illustration below:
4 wire load cell – Jumpers ON 6 wire load cell – Jumpers OFF
Load Cell Terminal Block

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Communications Wiring (RS 232)
The M1 features 2 serial ports (Com1 & Com2) to connect to peripheral devices
such as printers, remote displays and PCs.
1. Ensure the M1 and communicating
device (printer, etc.) are disconnected
from power.
2. Run communication cable through the
strain-relief and wire to the COM1 or
Com2 Terminal as required. See table
below:
COM TERMINAL (COM1) COMMUNICATING DEVICE
RX-1 TX
TX-1 RX
COM SIG GND, or COM
COM TERMINAL (COM2) COMMUNICATING DEVICE
RX-2 TX
TX-2 RX
COM SIG GND, or COM
Default Communications Settings (Com1 & Com2):
•9600 Baud •1 Stop Bit
•No Parity •No Hardware Handshaking
•8 Data Bits •Continuous Transmit (DF1500)
Qualified Technicians can adjust communications settings in
Calibration Mode Parameter Sub-block 5.x (See Page 20).
M1 Com Port Terminal Blocks

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Remote Switch Wiring
Use the COM port for remote input control (CLEAR, TARE, ZERO or PRINT)
using a pushbutton switch.
1. Ensure the unit is disconnected from power.
2. Run a 2 conductor cable through the strain-relief, connecting one
conductor to the TX terminal and one conductor to the RX terminal on the
COM Port Terminal Block.
3. Use a dry contact, push-to-make switch to short TX and RX together.
4. Enable the Remote Switch Function in Calibration Mode (P5.3 & P5.8).
Battery / Battery Replacement
The M1 uses a 3 Volt lithium battery. Power is drawn from the battery only when
the unit is disconnected from AC power. If time and date are lost when the unit is
disconnected from AC power, the battery likely needs replacement.
1. Remove the old battery from the B1 terminal on the M1 PCB by hand.
2. Observe proper battery polarity before inserting new battery.
3. Ensure the battery is seated correctly in the B1 terminal.
ATTENTION! DO NOT supply any external voltage to the
remote switch terminal! A contact closure is all that is required.
CAUTION! Risk of explosion if battery is replaced by an incorrect
type. Dispose of used batteries according to their instructions.
CAUTION! Never use metal objects such as screwdrivers to remove
batteries! This may result in personal injury or damage to the unit.

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Closing the M1 Enclosure
1. Once wiring is completed, replace the back cover over the main
enclosure.
2. Re-install the back cover screws being careful not to over-tighten.
3. Observe the back cover gasket is providing a good seal.
Mounting Instructions
1. The M1 can be mounted to horizontal or vertical surfaces using the
mounting bracket.
2. Ensure that mounting structures (walls, posts, etc.) will bear the weight of
the indicator (Approx. 1.5 kg / 3.5 lbs).
3. Use proper hardware, including wall anchors where necessary, when
mounting the bracket and indicator.
Warning! Over-tightened screws may compress and deform the
back cover gasket, resulting in gasket failure.

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START-UP
1. Connect the AC power cord from the indicator into a power outlet.
2. The indicator will perform a short start-up sequence including the software
version before entering Weighing Mode (displaying the scale weight).
3. Installers must take proper steps to prevent noise, static, or other power
problems.
TIME & DATE
1. From Weighing Mode, press and hold the TARE key until “CLOC” is
displayed, followed by the time.
•If 12 Hour Clock is selected, the time will appear HH.MM.A/P
•If 24 Hour Clock is selected, the time will appear HH.MM
2. Adjust the time using the LEFT & RIGHT ARROW keys to select digits
and the UP & DOWN ARROW keys to alter digits.
3. Press ENTER to confirm and the date will be displayed
•If International Date is selected, the date will appear DD.MM.YY
•If US Date is selected, the date will appear MM.DD.YY
4. Adjust the date using the LEFT & RIGHT ARROW keys to select digits
and the UP & DOWN ARROW keys to alter digits.
5. Press ENTER to confirm and return to Weighing Mode.
ATTENTION! In noisy industrial environments, power-
conditioning filters are a requirement to ensure a fail-safe
operation under all conditions. Indicators should not share AC
power with electrical motors and switchgear. Consult the site
engineer for clean AC power.
Time & Date default format is 12 Hour clock and International
date. Changes may be made in Calibration Mode (P9.8).

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CALIBRATION MODE
Calibration Keys
UP DOWN LEFT RIGHT ENTER
Entering Calibration Mode
1. Press and hold the LEFT and RIGHT ARROW keys together. ”CAL” is
displayed, followed by “PASS” for password.
2. Key in the 4 digit password. The factory default password is “0001”.
Use the LEFT & RIGHT ARROW keys to select the digit. The
selected digit will flash.
Use the UP & DOWN ARROW keys to increase and decrease the
value of the digit.
Press the ENTER key when done.
3. Calibration Mode is indicated with a blinking “C”. If the password is
incorrect the display will read “FAIL” and return to normal Weighing Mode.
The M1 utilizes electronic sealing. For more information on the
password, sealing, and the electronic audit trail, see page 29.

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Navigating Calibration Parameters
1. Use the UP and DOWN ARROW keys to navigate the Parameter List.
Calibration Parameters are displayed by the letter “P” preceding the
parameter number (Ex. “P1.0, P1.1, P1.2 …”).
2. Holding down the UP or DOWN ARROW key for more than 1 second will
scroll through the Calibration Sub-blocks for quicker navigation. (Ex.
“P1.0, P2.0, P3.0 ...”).
3. Press the ENTER key to select the parameter for editing.
Editing Calibration Parameters
1. Use the UP and DOWN ARROW keys to edit the parameter value.
2. Press ENTER to confirm the parameter value.
To edit a numeric value (Ex. Weight), use the LEFT and RIGHT ARROW
keys to select the digit and the UP and DOWN ARROW keys to alter the
digit’s value. Press the ENTER key when done.
Example: Enter 20.0 (Note: Decimal point is determined by P1.2)
Exit & Save Calibration
1. Press the LEFT and RIGHT ARROW keys together.
2. The indicator will exit Calibration Mode and return to Weighing Mode. All
calibration information is saved.
If no parameter is selected after 6 seconds, the display returns to
the scale weight with the blinking “C” on the left-hand side.

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CALIBRATION PARAMETERS
Scale Calibration Sub-block 1.x
Parameter Value Description
P1.0
Graduations 1d <
2d
5d
10d
20d
50d
100d
Select scale graduations (d).
Setting this parameter to higher than 10d will set the
decimal point to 0, and display 2 leading zeros at ZERO
(00).
Setting to 100D will result in 3 zeros at ZERO (000).
P1.1
Decimals 0 <
0.0
0.00
0.000
00.0000
Select decimal places (Up to 3).
4 decimal places are used when calibrating in kilograms for
use in grams.
P1.2
Deadload Scale E SCL Displays “E SCL” to empty scale. Once the scale is empty,
press ENTER to calibrate deadload value (Scale zero
calibration).
P1.3
Calibrate Scale SPAn
005000 <
Displays “SPAn”. Place test weight on the scale. Enter the
test weight value using the ARROW keys. Press ENTER to
start calibration.
P1.4
Scale Capacity 005000 <
0 to 999999
Enter the Scale Capacity using ARROW keys. Press
ENTER to select.
P1.5
Overload 0d <
1d
2d
2PC (2%)
Selects the number of divisions over scale capacity where
the display blanks for a scale over (overload) condition.
Choose between 0, 1, 2 divisions or 2% of capacity.
P1.6
Calibrated Units
(Primary Units)
1 = kg <
2 = lb
Selects the Primary scale units used for calibrating the
scale.
Setting this parameter affects P1.7 and P1.8 automatically.
P1.7
Power ON Units 1 = kg <
2 = lb
3 = oz
4 = g
Selects the default units that the scale powers up to.
P1.8
Alternate Units 1
0 = Disabled
1 = kg
2 = lb <
3 = oz
4 = g
Selects alternate unit of measurement 1. Setting to 0
disables alternate unit of measurement 1.
P1.9
Alternate Units 2
0 = Disabled <
1 = kg
2 = lb
3 = oz
4 = g
Selects alternate unit of measurement 2. Setting to 0
disables alternate unit of measurement 2.
Factory default values are bold <.

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Zero and Motion Settings Sub-block 2.x
Factory default values are bold <.
Parameter Value Description
P2.0
Pushbutton Zero
Range
2PC (2%) <
10PC (10%)
90PC (90%)
Selects the range (from zero to capacity) within which the
scale can be zeroed. LFT must be 2%.
Example: Scale can be zeroed within ± 2% of calibrated
zero.
P2.1
AZSM Zero
Tracking
OFF
0.5d <
1d
2d
3d
Selects the zero tracking range specified in +/- displayed
divisions. Example: Automatically zeros the scale within ±
0.5d of calibrated zero.
Must be within the Zero Range.
P2.2
Power Up ZERO
IZSM
0 = Disabled <
1 = Enabled
When enabled, the scale will automatically zero on power
up (Up to 2% of scale capacity).
P2.3
Scale Motion OFF
1d
2d <
3d
5d
10d
Selects the Scale Motion band in displayed divisions.
Determines the number of divisions at which the scale is
sensitive to motion (Motion annunciator turns ON).
P2.4
Motion Timer 4 <
Range: 1 - 20
Selects the time (in 0.25 second intervals) the Motion
annunciator will remain ON after the scale weight stabilizes
within tolerance. Example: For a motion time of 1 second,
set this value to 4.
P2.5
Blank Display on
Motion
0 = Disabled <
1 = Enabled
When enabled, the display blanks when motion is detected.

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Tare Settings Sub-block 3.x
Parameter Value Description
P3.0
Regulatory 0 = NTEP
1 = CANADA
2 = NONE <
Sets how the TARE operates based on regulatory agency.
NTEP: Allows a tare weight to be acquired at any positive
weight (>0).
Tares can only be cleared when GROSS weight is at no
load.
New tares may be acquired even if a previous tare weight
is present.
CANADA: Allows a tare weight to be acquired at any
positive weight (>0).
Tares can only be cleared when GROSS weight is at no
load.
Previous tare weights must be cleared before a new tare
weight can be acquired.
NONE: Allows a tare weight to be acquired at any positive
weight (>0).
Tares can be cleared at any time.
New tares may be acquired even if a previous tare weight
is present.
P3.1
Lockout Tare 0 = Disabled <
1 = Enabled
Locks out the TARE key. The Operator cannot tare the
scale.
P3.2
Auto Tare 0 = Disabled <
1 = Enabled
Automatically tares the scale when the weight is greater
than 5 displayed divisions, there is no motion, and the
scale is in GROSS mode.
P3.3
Auto Clear 0 = Disabled <
1 = Enabled
Automatically clears tare values when the scale is at
GROSS zero.
Factory default values are bold <.