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A

Cooling Fan Stop (Control Module) (ECM)

Fanuc · Alpha i Series AC Servo Motor and Spindle

¿Qué significa A ?

The cooling fan for the heat sink of the Control Module has stopped. This can lead to overheating of the Control Module and reduced operating life of its components. Note that even if ECM works continuously, the cooling fan should be exchanged early.

Causas comunes

  • Current exceeds limits during regenerative braking.
  • Excessive back EMF from the motor during deceleration.
  • Braking resistor capacity is insufficient.
  • Incorrect regeneration control parameters.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Inspect the cooling fan of the Control Module for obstructions or mechanical failure.

  2. 2

    Measure the voltage supply to the cooling fan to ensure it is receiving power.

  3. 3

    Replace the cooling fan if it is not operating or is making abnormal noise.

Ver todos los códigos en este manual (29)
Datos técnicos verificados. Última actualización: March 2026

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Fuente: Fanuc Alpha i Series AC Servo Motor and Spindle