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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

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: April 2026

Related Faults

1Overcurrent11Output phase fault111Temperature fault
Source: Vacon 20 Compact
Open Manual (Page 55)Search more codes in this manual