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Initialization error (check memory unit insertion)

ABB · Application Error ABB Motion Drives Error trouble shoo

What does - mean?

The drive displays a dash character ('-') or other single digit character ('0' to '9') permanently, indicating an initialization error. This signifies that the drive cannot get to the firmware loading stage, often due to an incorrectly fitted memory module, issues with firmware loading, or connected external hardware.

Common Causes

  • The memory module is not fitted correctly or is loose.
  • Confused shipment of activated and inactive memory units.
  • Corrupted firmware on the memory card preventing loading.
  • Damaged encoder dragging down the control board voltage, hindering initialization.
  • External connections, such as to an RTE master, interfering with the boot process.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Power down the drive, then remove and re-seat the memory module, ensuring it is correctly fitted.

  2. 2

    Disconnect any other external connections, such as to an RTE master.

  3. 3

    Remove the encoder connection, as a damaged encoder can sometimes draw down the control board voltage.

  4. 4

    Power up the drive again and observe if the initialization proceeds past the dash character.

  5. 5

    If the problem persists, replace the drive unit, as it may indicate a deeper hardware issue.

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Verified technical data. Last updated: March 2026

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