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Brecknell 6720U - User Manual

Brecknell 6720U
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67XXU
USB/Serial Scale Series
Service Manual
SOFTWARE VERSION 1.20
AWT35-501145
Issue AG

Table of Contents

Other manuals for Brecknell 6720U

Preview: Configuration Steps
Configuration Steps11 pages

Questions and Answers

  • C
    Charles PhillipsAug 19, 2025
    Why won't my Brecknell 6720U Scales turn on?
    • M
      manningteresaAug 19, 2025
      The issue might stem from several causes: the power cord could be improperly connected or not plugged in at all, the power outlet might not be providing electricity, or the battery could be discharged. To resolve this: * Check the power cord connections to ensure they are secure. * Verify that the power cord is plugged into a functioning power outlet. * Check the power source. * Replace the batteries if they are discharged.
  • D
    Denise GloverAug 21, 2025
    What to do if my Brecknell 6720U display shows '----'?
    • A
      Amy MillerAug 22, 2025
      This display indicates that the weight reading either exceeds the overload limit or the weight value, in the current unit of measure, exceeds 6 digits. To fix this, reduce the load on the scale until the weight value can be displayed or select a more appropriate unit of measure. You may also need to reset some parameters of CONFG or USER.
  • B
    Billy HernandezAug 25, 2025
    How to fix 'Ad---' error on Brecknell 6720U Scales?
    • D
      dsolomonAug 25, 2025
      The 'Ad---' error indicates that the loadcell wires connected to the indicator are incorrectly connected, shorted, or opened, or that the ADC or loadcell(s) are damaged. Ensure the wires are correctly connected and in good condition. Replacing the loadcell or ADC chip may be required.
  • D
    David GonzalezAug 26, 2025
    What does 'CAL.Er' mean on my Brecknell 6720U Scales and how to fix it?
    • K
      Kevin WhiteAug 26, 2025
      A 'CAL.Er' error indicates a calibration problem. This could be due to incorrect input data, or the loaded weight being too small, too big, unstable, or non-linear. Ensure you input the correct data and load the correct weight onto the platform.
  • A
    Annette GonzalezAug 28, 2025
    What to do if my Brecknell 6720U cannot zero?
    • M
      Monica JohnsonAug 28, 2025
      If your scale won't zero, it might be because the load on the scale exceeds the allowable limits, the load isn't stable, or there's load cell damage. Try removing the load from the scale and wait for the reading to stabilize.
  • H
    Henry ParkAug 30, 2025
    What does 'EEP.E1' mean on my Brecknell 6720U and how to solve it?
    • C
      Cheryl MitchellAug 30, 2025
      The 'EEP.E1' error means that the CONFG or CAL parameters are not correctly set. To resolve this, reset the items in CONFG and perform a calibration.
  • E
    Eric JonesSep 1, 2025
    What does 'EEP.E2' mean on my Brecknell Scales and how can I fix it?
    • T
      Travis DeleonSep 1, 2025
      The 'EEP.E2' error indicates that a USER parameter is not correctly set. To fix this, reset the items in USER.
  • J
    Jorge BensonSep 3, 2025
    What does 'CAP.ER' mean on Brecknell 6720U?
    • M
      mullinsjamesSep 3, 2025
      The 'CAP.ER' error means that the capacity parameters are not correct. To fix it, set PRIM.N/PRIM.D/SECND.n to the correct number, ensuring that the capacity does not exceed 6 digits.
  • E
    Erika GardnerSep 5, 2025
    Why do my Brecknell 6720U Scales display '0----'?
    • A
      Amber WilliamsSep 5, 2025
      This indicates that the weight reading is below the Power On Zero limit. Install the platform on the scale and perform a zero calibration.
  • A
    Abigail HillSep 7, 2025
    Why do my Brecknell 6720U display '____'?
    • S
      sarahrichardsonSep 8, 2025
      This display means the weight reading is below the Under load limit. Install the platform on the scale and perform a zero calibration.

Summary

General Information and Warnings

About this Manual

Explains manual structure, naming conventions, and page numbering.

Warnings

Lists operational warnings for extreme temperatures, electronic interference, vibration, and airflow.

Routine Maintenance

Emphasizes regular checks for operation and calibration, and safety during maintenance.

Cleaning the Indicator

Provides DOs and DON'Ts for cleaning the indicator, emphasizing safe methods.

Installation

Connections

Describes connectors for power, USB, RS-232, and display.

Column and Remote Display Mounting

Details how to mount the display on a column using a kit.

Desktop and Wall Display Mounting

Explains how to mount the indicator display on a desk or wall.

Specifications

Available Models

Lists the different model numbers and their specifications (size, capacity).

Power Supply

Details AC adapter requirements and USB power current consumption.

Communication

Details serial port options, baud rates, and data output formats.

Calibration Method

Explains the software calibration process, including points, adjustment, and geographic adjustment.

Configuration

Front Panel

Describes the front panel layout, including display and keypad.

Keys

Details the functions of the four keys on the keypad, including primary and secondary functions.

Navigating the Weigh Mode

Explains how to enter and use weighing functions like Zero, Tare, and HOLD.

Navigating the Count Mode

Explains how to enter and use the counting mode.

Hold Function

Details the HOLD function, its activation, and different hold methods.

Setup Mode

Entering the Setup Menu

Explains the procedure to enter the setup menu mode.

Navigating the Setup Menu

Describes how to navigate through the setup menus and sub-menus using keys.

Setup Menu Parameters

Provides detailed descriptions of parameters within the Setup Menu.

Exit the Setup Menu

Explains how to exit the setup menu and return to normal operation.

Calibration

Enter the Calibration Mode

Guides the user on how to access the calibration mode from the setup menu.

Linearity

Explains the process of calibrating the scale's linearity with multiple points.

Geographical Adjustment

Details how to adjust the scale's geographical position code for gravity compensation.

Input or View Calibration

Guides on inputting or viewing existing calibration parameters.

Serial Communication

Communication Settings

Details the steps to configure communication settings like baud rate, port, and output mode.

Transaction String

Explains the structure of data strings and symbols used.

Commands and Response

Introduces commands and responses for serial communication.

Legal for Trade

Physical Seal

Explains the purpose and location of the physical seal push button.

Audit Trail Parameters

Introduces parameters for tracking configuration changes and calibrations.

Troubleshooting

Display Characters

Lists ASCII characters and their corresponding LCD segment displays.

Display Symbols

Explains various symbols displayed on the LCD and their meanings.

Error Messages and Troubleshooting

Lists common symptoms, probable causes, and remedies for scale errors.

Brecknell 6720U Specifications

General IconGeneral
BrandBrecknell
Model6720U
CategoryScales
LanguageEnglish

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