WS Lightspeed User manual

PRELIMINARY
Software Ver 1.04
June 1, 2007

LIGHTSPEED OVER/UNDER CHECKWEIGHER
TECHNICAL MANUAL
SOFTWARE RELEASE 1.04, 06/2007
Copyright © 2007 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:
THIS IS A PRELIMINARY MANUAL. THERE MAY BE SOME ERRORS DUE TO
FUNCTION AVAILABILITY AND CHANGES REQUIRED DURING THE APPROVAL
PROCESS. PLEASE REPORT ANY DISCREPANCIES TO YOUR WSCL
REPRESENTATIVE. THANK YOU FOR YOUR PATIENCE.

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Technical Manual
TABLE OF CONTENTS
TABLE OF CONTENTS .................................................................................................... 1
INTRODUCTION............................................................................................................... 2
Disclaimer .....................................................................................................................2
Features ........................................................................................................................3
Specifications ................................................................................................................ 3
KEYPAD & SCALE FUNCTIONS ..................................................................................... 4
DISPLAY & ANNUNCIATORS.......................................................................................... 6
Weight Display .............................................................................................................. 6
Checkweighing Bars ..................................................................................................... 6
Annunciators ................................................................................................................. 7
INSTALLATION................................................................................................................. 8
Pre-Installation .............................................................................................................. 8
Leveling......................................................................................................................... 8
WIRING............................................................................................................................. 9
Opening the Lightspeed Enclosure ............................................................................... 9
Load Cell Wiring............................................................................................................ 9
Communications Wiring (RS 232)............................................................................... 10
Mounting Instructions .................................................................................................. 10
Powering Up................................................................................................................ 11
CALIBRATION MODE .................................................................................................... 12
Calibration Keys .......................................................................................................... 12
Entering Calibration Mode........................................................................................... 12
Navigating Calibration Parameters .............................................................................13
Editing Calibration Parameters ...................................................................................13
Exit & Save Calibration ...............................................................................................13
CALIBRATION PARAMETERS ...................................................................................... 14
Scale Calibration Sub-block 1.x .................................................................................. 14
Zero and Motion Settings Sub-block 2.x ..................................................................... 15
Tare Settings Sub-block 3.x ........................................................................................ 16
Scale Filtering Settings Sub-block 4.x......................................................................... 17
Serial Communications Sub-block 5.x ........................................................................ 18
Checkweigher Functions Sub-block 6.x ...................................................................... 19
Scale Diagnostics Sub-block 9.x................................................................................. 20
SEALING THE INDICATOR (LEGAL FOR TRADE)....................................................... 21
Electronic Seal ............................................................................................................ 21
TROUBLESHOOTING & ERROR MESSAGES ............................................................. 22

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INTRODUCTION
The Lightspeed Checkweigher meets the most critical customer needs by joining
quick, stable weight readings with the strength to survive the harsh industrial
environments found in food-processing and other industries.
The DYNARREST vibration filtering system uses digital signal processing and
Western's advanced A/D weighing algorithms to capture, stabilize, and display
weights with outstanding speed and accuracy while the sturdy, compact design
and stainless steel construction protect the scale from damage and ease
maintenance costs.
Lightspeed Checkweighers are perfectly suited for virtually all portioning,
checking and light industrial weighing needs. Large buttons and displays
improve human-machine interface in applications from simple weighing, to
instant target weight acquisition, to storing Product IDs and acceptance ranges.
As always, Western’s dedication to durability, functionality, and versatility make
the Lightspeed Checkweigher engineered for the diversity of the weighing
industry.
Disclaimer
The following User information is for the exclusive use of WESTERN Dealers and
Customers.
Installation and configuration procedures (as described in this manual) should
only be carried out by qualified Scale Service Technicians as authorized by
Western.
Scale Service Technicians handling Lightspeed indicator 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 Lightspeed
indicator enclosure.

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Features
Improved Interface
•Large, easy to read LED display (7/8ths inch digits, 22 mm)
•Oversize keys with international symbols
•Brightly colored checkweighing bar graph for quick results
•Intuitive target modes and product storage
Durable & Sanitary
•304 stainless steel base, feet, column and indicator enclosure
•NEMA 4X / IP66 with enclosure breather vent
•Simple, strong and reliable base design (12 Ga. Frame)
•Open design increases drainage and decreases potential for contaminants
•Overload stops for load cell protection
Excellent Serviceability
•Easy to navigate software menu and calibration
•Calibrate to any test weight value
•Terminal wiring
Advanced Capabilities
•DYNArrest digital filtering system for fast and stable weighing in high vibration
areas.
•Store 100 products with weight ranges
•MADE IN CANADA.
Specifications
Excitation: 5 VDC, Up to 4 x 350 Ωor 8 x 700 Ωloadcells
Analog Input Range: 0 - 19 mV
Resolution: 5,000 d (scale) or 10,000 d (indicator only);
1 million internal counts
Measurement Speed: 100 weight samples/sec.
Power: AC Input: 90 - 240 VAC
Consumption: 500 mW
Display: 6 digit, 7 segment, LED weight display
Bright LED bar graph and annunciators
Communications: Full duplex RS-232 serial port
Configurable data format
Selectable output strings
Temperature Range: 14°F to 104°F / -10°C to 40°C
Approvals: NTEP & Measurement Canada pending
Sizes & Capacities: 9 x 9 base: 5 lb, 10 lb, 25 lb
12 x 12 base: 25 lb, 50lb, 100 lb

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KEYPAD & SCALE FUNCTIONS
The Lightspeed indicator utilizes 7 keys for operator interfacing. To maximize
indicator functionality, some keys perform multiple functions.
ZERO: Sets the weight display to ZERO.
The scale will not zero if:
•Weight on the scale is in MOTION;
•The weight on the scale exceeds the allowed
ZERO RANGE;
•The ZERO function has been disabled.
When one of these situations occurs, the display will
briefly read “Err”.
UNITS: Toggles between Primary and Secondary Weighing
Units.
Units are selected or disabled in Calibration Mode.
RIGHT
ARROW:
Moves the cursor RIGHT when entering values.

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TARE: Acquires tare value from weight on the scale (Container,
Box, etc.).
The scale will not tare if:
•Weight on the scale is in MOTION;
•The scale weight is negative;
•The TARE function has been disabled.
When one of these situations occurs, the display will
briefly read “Err”.
LEFT
ARROW:
Moves the cursor LEFT when entering values.
CLEAR: Erases any previously acquired tare values.
PRINT: Transmits data string or scale ticket through COM1.
ENTER
KEY:
Confirms entered values.
TARGET: Acquires target weight from current weight on the scale.
UP
ARROW:
Scrolls UP through Calibration Parameters;
Increments values.
ID:
DOWN
ARROW:
Scrolls DOWN through Calibration Parameters;
Decrements values.
In Canadian Legal for Trade applications, previous tare weights
must be cleared before a new tare weight can be acquired.

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DISPLAY & ANNUNCIATORS
The Lightspeed uses a high intensity Light Emitting Diode (LED) display with a
quick update rate. The LED bar graph visually signals over, under or accept
conditions and 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.
Checkweighing Bars
UNDER: The scale weight is less than the desired target range.
ACCEPT: The scale weight is within the desired target range.
OVER: The scale in weight is greater than the desired target range.

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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)
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.

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INSTALLATION
Pre-Installation
It is always good practice to verify that your Lightspeed checkweigher or
Lightspeed indicator is complete and undamaged upon receipt.
•Check over packaging for any signs of damage.
•Remove the Lightspeed from protective packaging and check for damage.
•Verify that the box includes the Lightspeed checkweigher or indicator with:
oUser Manual
Leveling
1. Remove the scale platform cover and observe the bubble level mounted
on the scale frame.
2. Adjust the scale feet until the bubble is within the “bull’s-eye” and all four
scale feet are securely on the surface.
3. Replace the scale platform cover.

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WIRING
Opening the Lightspeed 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.
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 (J4). See
table below:
LOAD CELL TERMINAL (J4) 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 Lightspeed 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

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Communications Wiring (RS 232)
1. Ensure the Lightspeed and communicating device (printer, remote display,
PC) are disconnected from power.
2. Run communication cable through the strain-relief and wire to the COM1
Terminal. See table below:
COM TERMINAL (COM1) COMMUNICATING DEVICE
RX TX
TX RX
COM SIG GND, or COM
Default Communications Settings:
•9600 Baud •1 Stop Bit
•No Parity •Transmits when the [PRINT]
•8 Data Bits key is pressed.
Mounting Instructions
1. The Lightspeed indicator can be mounted on any surface using the
mounting bracket
2. Ensure that mounting structures (walls, posts, etc.) will bear the weight of
the indicator (2 kg / 5 lbs).
3. Use proper hardware, including wall anchors where necessary, when
mounting the bracket and indicator
Communications settings can be adjusted in Calibration Mode
by qualified Technicians.

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Technical Manual
Powering Up
1. Connect the AC power cord from the indicator into a power outlet.
2. Installers must take proper steps to prevent noise, static, or other power
problems.
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.
CAUTION! HIGH VOLTAGE! Only trained personnel should
attempt any internal AC wiring.

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CALIBRATION MODE
Calibration Keys
UP DOWN LEFT RIGHT ENTER
Entering Calibration Mode
1. Press the LEFT and RIGHT ARROW keys together.
2. ‘”CAL” is displayed, followed by “PASS” for password.
3. 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.
4. The first Calibration Mode parameter (P1.0) is displayed. If the password
is incorrect the display will read “FAIL”.
The Lightspeed utilizes electronic sealing. For more information
on the password, sealing, and the electronic audit trail, see page
21.

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Navigating Calibration Parameters
1. Use the UP and DOWN ARROW keys to find the parameter. Calibration
Parameters are displayed by the letter “P” preceding the parameter
number (Ex. “P1.1, P1.2, P1.3 …”).
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.
In Calibration Mode, if no keys are pressed for 10 seconds, the scale
weight is displayed with a 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 <
Select decimal places (Up to 3).
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
005.000 <
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
005.000 <
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 in
which blanks the display for a scale over 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 1.

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Zero and Motion Settings Sub-block 2.x
Parameter Value Description
P2.0
Pushbutton
Zero Range
2% <
18%
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 18% 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: 2 - 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.

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Technical Manual
Scale Filtering Settings Sub-block 4.x
Parameter Value Description
P4.0
Filter Preset
1=Light
2 = Medium <
3 = Heavy
4 = Animal 1
Adjusts filter parameters P4.1 to P4.4 to a preset
value. Use this to quickly find a starting point for
scale filtering. The User can then fine tune the
filtering if required using the parameters below.
P4.1
Filter
Frequency
0.5 Hz
1 Hz
2 Hz <
3 Hz
Frequency in Hertz of the front end digital filter. A
lower frequency will make the scale more
immune to vibrations, but will also slow down the
response time of the display.
P4.2
A/D Averaging
5
10
50 <
75
100
150
200
Selects the number of A/D conversions that are
averaged to obtain a displayed reading. A higher
number gives a more accurate display by
reducing noisy readings, but slows down the
settling rate of the display.
P4.3
A/D Averaging
Cut-Out
Threshold
2d <
4d
8d
12d
14d
18d
Sets the weight change threshold in displayed
divisions where the A/D averaging is suspended.
This will make the display more responsive to
weight changes above the cut-out threshold.
P4.4
A/D Averaging
Cut-Out
Sensitivity
2
5 <
8
10
12
15
Specifies the number of consecutive A/D
samples above the Cut-Out Threshold before A/D
Averaging is suspended.
P4.5
Display Update
Rate
0 <
0.25
0.50
0.75
1.00
Configures how often the display is updated in
seconds. If set to 0 the display updates at full
speed.

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Serial Communications Sub-block 5.x
Parameter Value Description
P5.0
Baud Rate
COM1
1200
2400
4800
9600 <
19200
Transmission speed (baud rate) for COM1.
P5.1
Data Format
COM1
8-non <
7-Evn
7-Odd
Parity and bits for COM1. 8-bit No parity, 7-bit
Even parity, or 7-bit Odd parity.
P5.2
Output Mode
COM1
0 = Stream <
1 = Transmit on
print
2 = Ticket
3 = Poll Mode
4 = Stream No
Motion
5 = Disabled
Controls the operation of the COM1 port:
0: Continuous output or “stream” mode.
1: Output data string when PRINT key is pressed.
2: COM port operates in ticket mode*
3: Poll Mode. Indicator responds to these
commands:
‘?’ Poll for weight
‘Z’ ZERO
‘T’ TARE
‘C’ CLEAR
‘P’ PRINT
*P5.3*
Data String
Emulation
COM1
0 = DF1500 <
1 = Condec
2 = Toledo
3 = Cardinal
4 =Weightronix
String emulation for continuous serial stream.
*Only DF1500 currently available*
P5.4
Stream Delay
COM1
0 sec <
0.25 sec <
0.5 sec
0.75 sec
1 sec
Inserts a delay between serial transmissions
(select 0.25 second intervals). 0 = No delay.
P5.5
Auxiliary
Function COM1
0 = COM <
1 = Print
2 = Tare
3 = Clear
If the COM port is not needed for
communications, it can be used for remote input
control using a push button switch. Use an
external switch to connect RX and TX together.
Set the parameter to make the switch function as
one of the following:
1: Remote pushbutton PRINT.
2: Remote pushbutton TARE.
3: Remote pushbutton CLEAR.