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7

Over-voltage of Capacitor Module (ECM)

Fanuc · Alpha i Series AC Servo Motor and Spindle

¿Qué significa 7 ?

The voltage across the Capacitor Module of the ECM has exceeded its maximum safe operating voltage. This indicates an issue with charge control or excessive regenerative energy.

Causas comunes

  • The voltage across the capacitor module exceeds its maximum rated voltage.
  • External voltage surge applied to the capacitor module.
  • Faulty capacitor module components (e.g., series elements).
  • Incorrect operation of balancing circuits within the module.
  • Overcharging of the capacitor bank.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Inspect the Capacitor Modules for signs of bulging or damage.

  2. 2

    Check the ECM control module's charging and discharge control circuits.

  3. 3

    Verify the operation of the regenerative discharge unit if connected.

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