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C8

Spindle Synchronization Position Error

Fanuc · Series 30i/31i/32i-MODEL B Plus

¿Qué significa C8 ?

This alarm indicates that the spindle motor's position error has exceeded an acceptable threshold during spindle synchronization. This can be triggered by specific sequence timing issues when motor excitation is off, by motor overload during cutting, or by an incorrectly set alarm detection level (parameter No. 4516).

Causas comunes

  • Spindle motor accelerated to eliminate accumulated position error while motor excitation (SFR, SRV) is off.
  • Overload during cutting operation.
  • Inappropriate alarm detection level setting (parameter No. 4516).

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Modify the sequence so that motor excitation (SFR, SRV) is turned off only after spindle synchronization is released.

  2. 2

    Review the cutting conditions to prevent overload.

  3. 3

    Review the alarm detection level setting (parameter No. 4516) to ensure it is appropriate for the application.

Ver todos los códigos en este manual (38)
Datos técnicos verificados. Última actualización: March 2026

Fallas relacionadas

Fuente: Fanuc Series 30i/31i/32i-MODEL B Plus