04

Thermal overload of motor / Overcurrent in brake chopper

SEW Eurodrive · MOVIFIT-FC Inverter

What does 04 mean?

This fault can signify one of two issues: either a thermal overload of the motor due to factors like high ambient temperature, inadequate heat dissipation, or excessive mechanical load; or an overcurrent condition within the brake chopper circuitry. Both conditions indicate a risk of component damage.

Common Causes

  • Motor temperature exceeds safety limits.
  • Overcurrent condition exceeding safe operating parameters.
  • Brake chopper circuit fault or overload.
  • Motor windings shorted or damaged.
  • Parameter P0610 (motor thermal model) settings incorrect.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Lower the ambient temperature around the motor.

  2. 2

    Ensure proper airflow and ventilation to prevent heat build-up around the motor.

  3. 3

    Reduce the mechanical load on the motor.

  4. 4

    Increase the motor speed if the application allows.

  5. 5

    Reset the fault by switching off the DC 24 V supply voltage.

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Verified technical data. Last updated: March 2026

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Source: SEW Eurodrive MOVIFIT-FC Inverter