61

Speed error

Vacon · NX Liquid-Cooled Drive

What does 61 mean?

The actual motor speed is not equal to the commanded reference speed. For Permanent Magnet Synchronous (PMS) motors, this specifically indicates that the pull-out torque has been exceeded.

Common Causes

  • Actual motor speed deviates significantly from the setpoint.
  • Speed feedback from encoder does not match commanded speed (P1-54).
  • Motor load exceeding capability, causing speed drop.
  • Incorrect PID speed control parameters.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the encoder connection for integrity, proper signal transmission, and correct phasing.

  2. 2

    For PMS motors, either reduce the mechanical load on the motor or verify the motor sizing is adequate if the pull-out torque has been exceeded.

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Verified technical data. Last updated: March 2026

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Source: Vacon NX Liquid-Cooled Drive