b00000 - b06409

Boot error code (Various)

ABB · Application Error ABB Motion Drives Error trouble shoo

What does b00000 - b06409 mean?

The drive displays a boot error code (starting with 'b' on the seven-segment display) indicating a fatal error during the boot-up process. This generally points to issues with the memory module, firmware, or connected external hardware.

Common Causes

  • Memory module not correctly fitted or damaged.
  • Corrupt firmware preventing successful boot-up.
  • Damaged encoder drawing down the control board voltage, causing boot failure.
  • Other connected external hardware 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 all connections apart from the logic supply power source.

  3. 3

    Specifically, remove the encoder connection, as a damaged encoder can drag the control board voltage down.

  4. 4

    Power up the drive again after performing the above steps.

  5. 5

    If the problem persists, replace the memory module. If still unresolved, replace the drive unit.

Browse all codes in this manual (58)
Verified technical data. Last updated: March 2026

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