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OC During Dec

Overcurrent shut-off during deceleration

Mitsubishi Electric · FR-E500 Inverter

¿Qué significa OC During Dec ?

The inverter output is shut off because the output current reached or exceeded approximately 200% of the rated current during the deceleration phase. This can be caused by too rapid deceleration, issues with mechanical braking, or a fault in the motor/wiring.

Causas comunes

  • Motor decelerating too rapidly for the load or inverter's braking capability.
  • Output short-circuit or ground fault occurring during deceleration.
  • Mechanical brake on the motor engaging too quickly or aggressively.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Increase the deceleration time setting (e.g., Pr. 8 or Pr. 45) to allow for a smoother slowdown.

  2. 2

    Adjust the operation of the motor's mechanical brake to ensure it is not engaging too quickly or causing excessive current spikes.

  3. 3

    Inspect motor cable and motor terminals for signs of short-circuit or ground fault.

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Datos técnicos verificados. Última actualización: March 2026

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Fuente: Mitsubishi Electric FR-E500 Inverter