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305

Serial Pulse Coder Miscount Alarm (CMAL)

Fanuc · Alpha i series AC Servo Motor

¿Qué significa 305 ?

A miscount alarm (CMAL) was detected for the serial pulse coder, indicating an error in counting pulses. This suggests a problem with the pulse coder's counting mechanism or an intermittent fault.

Causas comunes

  • Miscounting of pulses by the serial pulse coder.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Turn the main power OFF.

  2. 2

    If the alarm recurs when power is re-applied, replace the motor (which contains the pulse coder).

  3. 3

    Even if the alarm does not recur, restart the operation from reference position return to re-establish positional accuracy.

Ver todos los códigos en este manual (60)
Datos técnicos verificados. Última actualización: March 2026

Fallas relacionadas

Fuente: Fanuc Alpha i series AC Servo Motor