4063

Encoder fault (_ecPOSSIBLE_ENCODER_FAULT)

ABB · Application Error ABB Motion Drives Error trouble shoo

What does 4063 mean?

This is a general encoder fault detected by the drive, indicating a potential issue with the encoder configuration, wiring, or the encoder's operational integrity. This can lead to inaccurate position or speed feedback.

Common Causes

  • Incorrect encoder parameters configured in the drive.
  • Damaged or incorrectly wired encoder cable.
  • Encoder malfunction or failure.
  • Electrical noise or interference affecting encoder signals.
  • Mechanical issues with the encoder mounting or shaft coupling.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check all encoder parameters in the drive configuration to ensure they match the installed encoder type and specifications.

  2. 2

    Inspect the encoder wiring for damage, loose connections, proper shielding, and ensure correct terminal assignments.

  3. 3

    Rotate the motor shaft by hand and observe encoder operation and signal integrity using diagnostic tools if available (e.g., Mint Workbench).

  4. 4

    Measure the voltage levels on the encoder power supply and signal lines to ensure they are within specification.

  5. 5

    Check for sources of electrical noise near the encoder cable and implement appropriate filtering or shielding measures.

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Verified technical data. Last updated: March 2026

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Source: Application Error ABB Motion Drives Error trouble shoo