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Western Scale MAX Technical Manual

Digital weight indicator
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Summary of Contents for Western Scale MAX

  • 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

    Display Annunciators ..........................5 KEYPAD & SCALE FUNCTIONS ........................6 INSTALLATION ...............................8 Pre-Installation ............................8 AC Power ..............................8 Loading Batteries ............................9 Opening the MAX Enclosure ........................9 12 Volt Battery Wiring ..........................9 Load Cell Wiring............................10 Communications Wiring (RS 232) ......................11 Mounting Instructions ..........................11 CALIBRATION MODE ...........................12 Calibration Keys ............................12...

  • Page 4: Introduction

    The MAX also utilizes sophisticated filtering algorithms and display modes to offer the best solution to vibration and dynamic weighing problems such as livestock. Designed with the durability, functionality, and versatility expected from Western, the MAX is truly engineered for the diversity of the weighing industry. Disclaimer The following User information is for the exclusive use of WESTERN Dealers and Customers.

  • Page 5: Features

    Technical Manual Features Mobile & Versatile • Large LCD display (1-1/8 ” digits) • Easy to read in low light and direct sunlight • Weather-proof, stainless steel enclosure • Perfect for outdoor use Multiple Power Inputs • Direct AC Power •...

  • Page 6: Display & Annunciators

    Digital Indicator DISPLAY & ANNUNCIATORS The MAX uses a Liquid Crystal Display (LCD) with an LED backlight. HTN technology gives the display better contrast over wider viewing angles. LCD arrow and display annunciators communicate scale status and mode information to the user.

  • Page 7: Display Annunciators

    Technical Manual Display Annunciators Scale is weighing in POUNDS. Scale is weighing in OUNCES. Scale is weighing in KILOGRAMS. The weight on the scale is STABLE. The averaged scale weight has been LOCKED on the display (Only if dynamic weighing is enabled – Not Legal for Trade).

  • Page 8: Keypad & Scale Functions

    Digital Indicator KEYPAD & SCALE FUNCTIONS The MAX indicator utilizes 5 keys for operator interfacing. To maximize indicator functionality, some keys perform multiple functions. Press the key: MENU - Enters the User Menu. Pressing the key again scrolls through the User Menu (See page XX).
  • Page 9 Technical Manual Press the key: TARE - Acquires tare value from weight on the scale (Container, Box, etc.) The scale cannot be tared if: • The scale weight is negative; • Weight on the scale is in MOTION; • The TARE function has been disabled.

  • Page 10: Installation

    Digital Indicator INSTALLATION Pre-Installation It is always good practice to verify that the MAX indicator is complete and undamaged upon receipt. • Check over packaging for any signs of damage. • Remove the MAX from protective packaging and check for damage.

  • Page 11: Loading Batteries

    3. Lift the back cover away from the enclosure to expose the wiring terminals. Be sure to observe proper ESD procedures when handling PCBs. 12 Volt Battery Wiring The MAX indicator can be wired for power directly to a 12 Volt (car) battery. See table below: MAX 12 VOLT POWER TERMINAL (J1) 12 VOLT BATTERY –...

  • Page 12: Load Cell Wiring

    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 (J5). See table below: MAX LOAD CELL TERMINAL (J5) LOAD CELL WIRE +EXC Positive Excitation...

  • Page 13: Communications Wiring (Rs 232)

    Communications settings can be adjusted in Calibration Mode by qualified Technicians. Mounting Instructions 1. The Max can be mounted on interior or exterior surfaces using the mounting bracket. 2. Ensure that mounting structures (walls, posts, etc.) will bear the weight of the indicator (3 kg / 7 lbs with batteries).

  • Page 14: Calibration Mode

    3. Press the LEFT and RIGHT ARROW keys together. 4. The first Calibration Mode parameter (P1.0) is displayed. The MAX supports both electronic (default) and physical sealing. Physical sealing must be set-up in Calibration Mode. For more information on sealing and the electronic audit trail, see page XXX.

  • Page 15: Navigating Calibration Parameters

    Technical Manual 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.

  • Page 16: Calibration Parameters

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

  • Page 17: Zero And Motion Settings Sub-Block 2.X

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

  • Page 18: Tare Settings Sub-Block 3.X

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

  • Page 19: Scale Filtering Settings Sub-Block 4.X

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

  • Page 20: Serial Communications Sub-Block 5.X

    Digital Indicator Serial Communications Sub-block 5.x Parameter Value Description P5.0 1200 Transmission speed (baud rate) for COM1. Baud Rate 2400 COM1 4800 9600 < 19200 P5.1 8-non < Parity and bits for COM1. 8-bit No parity, 7-bit Data Format 7-Evn Even parity, or 7-bit Odd parity.

  • Page 21: Power Management Sub-Block 6.X

    Technical Manual Power Management Sub-block 6.x Parameter Value Description P6.0 0 = AUTO < Controls the backlight of the LCD display. For Backlight 1 = Always ON optimal battery life AUTO or OFF is recommended. 2 = Always OFF P6.1 2 sec Selects the number of seconds the backlight Backlight...

  • Page 22: Scale Functions Sub-Block 7.X

    Digital Indicator Scale Functions Sub-block 7.x Parameter Value Description P7.0 OFF < Animal averaging time. When enabled, auto Animal 1 sec averaging will operate for the specified time by Averaging 2 sec pressing the PRINT button in normal weigh mode. Sampling Time 3 sec The weight is then locked on the display,...

  • Page 23: Scale Diagnostics Sub-Block 9.X

    Technical Manual Scale Diagnostics Sub-block 9.x Parameter Value Description P9.0 ‘A’XXXXX Show AD converter raw counts for diagnostic AD Raw Counts purposes. The left most display will have a blinking “A” to indicate raw counts mode. Press ENTER to exit. P9.1 XXXXXX Displays the scale’s calibration factor.

  • Page 24: Scale Calibration

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

  • Page 25: Sealing The Indicator (Legal For Trade)

    IMPORTANT! If the password is forgotten, Calibration Mode will be inaccessible. Record ALL password changes and alert the customer. If the password is lost, call the factory for assistance. The MAX 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 26: User Menu

    Digital Indicator USER MENU The MAX User Menu gives the Scale Operator access to indicator functions and features without having to access Calibration Mode or call a Scale Technician. Press the MENU key to cycle through the User Menu functions. When the desired menu item is displayed, press ENTER.

  • Page 27: Clock

    Technical Manual Clock Time is displayed as HH:MM:SS. Press ENTER to return to Weighing Mode. To set the time: 1. Press the MENU key. 2. Select AM or PM using the UP & DOWN ARROW keys (if necessary). Press ENTER to confirm. 3.

  • Page 28: Troubleshooting & Error Messages

    Digital Indicator 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). GREEN LED ON: The Power Supply module is receiving AC power.
  • Page 29 Technical Manual Error Messages Condition ZERO / TARE Error: • Scale in motion during ZERO or TARE. • See Page XXX. Scale Overload Error: • Scale weight is over capacity: • Remove weight from scale Power Up Zero Error: • Scale weight exceeds 18% of scale capacity on power up.

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