15

Motor stalled

Vacon · NXP/C

What does 15 mean?

The motor stall protection has tripped, indicating that the motor has either stopped or is operating at a very low speed under a load that exceeds its capacity. This condition can lead to motor overheating and mechanical damage.

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

    Inspect the motor and its driven load for any mechanical obstructions, binding, or excessive friction that would prevent free rotation.

  2. 2

    Evaluate the mechanical load connected to the motor; reduce the load if it is exceeding the motor's rated capacity or the drive's settings.

  3. 3

    Verify that the motor parameters (e.g., motor nominal current, stall time) are correctly configured in the frequency converter.

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Verified technical data. Last updated: March 2026

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