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
Check the encoder connection for integrity, proper signal transmission, and correct phasing.
- 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.
Verified technical data. Last updated: March 2026
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Source: Vacon NX Liquid-Cooled Drive