Western Scale M1 Technical Manual
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Western Scale M1 Technical Manual

Digital weight indicator
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  • Page 2 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.

  • Page 3: Table Of Contents

    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 ........................

  • Page 4: Introduction

    Indicator Technical Manual 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 &...

  • Page 5: Features

    Indicator Technical Manual Features Simple Interface • Large, easy to read LED display digits (7/8 inch / 22 mm) • Oversize keys with international symbols • 8 Annunciators display scale data • MENU key accesses tickets and macro functions Durability •...

  • Page 6: Display & Annunciators

    Indicator Technical Manual 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. M1 Display Weight Display • 6 digits (7 segments each). Up to 3 decimal points.
  • Page 7 Indicator Technical Manual 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.

  • Page 8: Keypad & Scale Functions

    Indicator Technical Manual KEYPAD & SCALE FUNCTIONS The M1 indicator utilizes 5 keys for operator interfacing. To maximize indicator functionality, some keys perform multiple functions. M1 Keypad MENU - Cycles through the User MENU to access Press the key: additional Scale Tickets and functions (See Pg.
  • Page 9 Indicator Technical Manual Acquires a tare value from weight on the scale TARE: (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”.

  • Page 10: Installation

    Indicator Technical Manual 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.

  • Page 11: Load Cell Wiring

    Load Cell Terminal Block 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: 6 wire load cell –...

  • Page 12: Communications Wiring (Rs 232)

    Indicator Technical Manual 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.

  • Page 13: Remote Switch Wiring

    A contact closure is all that is required. 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.

  • Page 14: Closing The M1 Enclosure

    Warning! Over-tightened screws may compress and deform the back cover gasket, resulting in gasket failure. 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.

  • Page 15: Start-Up

    Indicator Technical Manual 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.

  • Page 16: Calibration Mode

    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.

  • Page 17: Navigating Calibration Parameters

    Indicator Technical Manual 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.

  • Page 18: Calibration Parameters

    Indicator Technical Manual CALIBRATION PARAMETERS Scale Calibration Sub-block 1.x Parameter Value Description Select scale graduations (d). P1.0 1d < Graduations Setting this parameter to higher than 10d will set the decimal point to 0, and display 2 leading zeros at ZERO (00).

  • Page 19: Zero And Motion Settings Sub-Block 2.X

    Indicator Technical Manual Zero and Motion Settings Sub-block 2.x Parameter Value Description Selects the range (from zero to capacity) within which the P2.0 2PC (2%) < 10PC (10%) scale can be zeroed. LFT must be 2%. Pushbutton Zero 90PC (90%) Example: Scale can be zeroed within ±...

  • Page 20: Tare Settings Sub-Block 3.X

    Indicator Technical Manual Tare Settings Sub-block 3.x Parameter Value Description 0 = NTEP Sets how the TARE operates based on regulatory agency. P3.0 Regulatory NTEP: Allows a tare weight to be acquired at any positive 1 = CANADA weight (>0). 2 = NONE <...

  • Page 21: Scale Filtering Settings Sub-Block 4.X

    Indicator Technical Manual Scale Filtering Settings Sub-block 4.x Parameter Value Description 1 = Light Adjusts filter parameters P4.1 to P4.4 to a preset value. P4.0 Use this to quickly find a starting point for scale filtering. If Filter Preset 2 = Medium < required, fine tune the filtering by adjusting P4.1 to P4.4 3 = Heavy individually.

  • Page 22: Serial Communications Sub-Block 5.X

    ‘C’ CLEAR ‘G’ units g ‘P’ PRINT Note 3: COM1 only - In Remote Display Mode, the M1 receives and displays continuous weights from another indicator. Poll Commands (ZERO, TARE, CLEAR, UNITS, PRINT) can be sent from the keypad. Remote Display Mode supports Western DF2000 and DF1500 strings only.

  • Page 23: Serial Communications Sub-Block 5.X (Continued)

    Indicator Technical Manual Serial Communications Sub-block 5.x (Continued) Parameter Value Description Data String emulations for COM1: 0 = Western DF1500 < P5.3 1 = Toledo Data String 2 = Toledo w/ checksum Western DF1500 format (19 characters): Emulation 3 = Toledo w/ checksum COM1 &...

  • Page 24: Ticket Formatting Sub-Block 7.X

    Indicator Technical Manual Ticket Formatting Sub-block 7.x Parameter Value Description Enables access to the Ticket Editor. Once P7.0 0 = Disabled < 1 = Enabled- enabled, access the Ticket Editor in Weighing Enable Mode by holding the PRINT key for 3 seconds. Ticket Editor This parameter remains enabled until the indicator power is cycled.

  • Page 25: Additional Scale Functions Sub-Block 8.X

    Indicator Technical Manual Additional Scale Functions Sub-block 8.x Parameter Value Description Enables the Peak Hold function. The maximum P8.0 0 = Disabled < 1 = Enabled weight is captured and displayed until the Peak Hold 2 = No Motion CLEAR key is pressed. When set to 2, peak weights are only captured when there is no Motion on the scale.

  • Page 26: Scale Diagnostics Sub-Block 9.X

    P9.6 Capture this data as a text file in HyperTerminal, or Transmit upload it directly to another M1 indicator. Calibration Data The indicator will read “rEAdY”. Press ENTER to begin or any other key to abort. The display will show the upload byte count as it is transmitting.

  • Page 27: Quick Scale Calibration

    5. Verify the scale is at zero and add test weights. This example shows 5000 lbs (max. capacity). The M1 indicator can be calibrated to any test weight amount. Go to P1.3 – Calibrate Scale. Press ENTER to select the parameter.

  • Page 28: Remote Display Mode

    • The weight display should show the same weight numbers as the connected indicator (complete with minus signs and decimals). • All annunciators should work with the exception of Centre of Zero. • Gram and Ounce annunciators will only work with M1, MAX or Lightspeed indicators.
  • Page 29 Indicator Technical Manual Start-Up 1. Connect the AC power cord from the indicator into a power outlet. 2. The start-up sequence displays the software version then the word ‘dSPLAY’ on the screen to indicate Remote Display Mode. The scale weight from the connected indicator is then displayed.

  • Page 30: User Menu

    Indicator Technical Manual USER MENU The User Menu gives Scale Operators access to additional indicator functions and features. 1. From Weighing Mode, press the MENU key to enter the User Menu. • Tickets are numbered by default as in Fig. A. •...

  • Page 31: Sealing The Indicator (Legal For Trade)

    Record ALL password changes and alert the customer. If the password is lost, call the factory for assistance. The M1 features a Category 1 Audit Trail System for recording changes in calibration. Two counters are utilized: Calibration Counter: Increments by 1 whenever the scale is deadloaded or calibrated.

  • Page 32: Troubleshooting & Error Messages

    Indicator Technical Manual TROUBLESHOOTING & ERROR MESSAGES Unit won’t power up: Check diagnostic LED lamps on the Mother board. GREEN LED OFF: The Power Supply module is NOT receiving AC power. • Verify power source (Cords, Outlets, breakers). • If power source is good, the Power Supply module may be damaged.

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