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SV0488

SELF TEST OVER TIME

Fanuc · Alpha i Series Servo Amplifier

¿Qué significa SV0488 ?

The MCC off Test was not completed within the time specified by parameter No. 1946. This indicates a potential issue with the MCC (Motor Contactor) contact operation, its wiring, or an inappropriately set test time.

Causas comunes

  • Internal self-test routine of the control system took longer than the defined time limit.
  • CPU overload or slow response impacting internal diagnostics.
  • Memory access issues during self-test.
  • Complex operation slowing down system initialization.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Inspect the MCC (Motor Contactor) contact for proper operation, mechanical integrity, and wear.

  2. 2

    Verify the value of parameter No. 1946, which defines the maximum allowable time for the MCC off Test, and adjust if necessary.

Ver todos los códigos en este manual (101)
Datos técnicos verificados. Última actualización: March 2026

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Fuente: Fanuc Alpha i Series Servo Amplifier