15

Motor stalled

Vacon · 20 Compact

What does 15 mean?

The motor stall protection has tripped, indicating that the motor is unable to rotate freely or maintain its commanded speed due to excessive load. This suggests a mechanical obstruction or an overload condition that prevents the motor from achieving motion.

Common Causes

  • Motor shaft rotation is blocked or severely restricted.
  • Overly high starting torque demand.
  • Mechanical binding in the driven equipment.
  • Incorrect motor tuning parameters (P1-10 to P1-15).
  • Low supply voltage affecting motor torque.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the motor shaft and connected mechanical load to ensure the motor is able to rotate freely without any obstructions.

  2. 2

    Verify that the mechanical load on the motor does not exceed its rated capacity.

Browse all codes in this manual (26)
Verified technical data. Last updated: March 2026

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