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Soft Phase Alarm (SPHAL)

Fanuc · Alpha i series AC Servo Motor

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A soft phase alarm (SPHAL) was detected. This type of alarm often points to issues with the motor's phase current detection or can be triggered by external electrical noise affecting the control signals.

Häufige Ursachen

  • Electrical noise interfering with phase detection.
  • Potential issues with motor phase current sensing.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Turn the main power OFF.

  2. 2

    Implement noise reduction measures as described in the relevant documentation.

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Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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Quelle: Fanuc Alpha i series AC Servo Motor