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401
Drive Ready Signal (DRDY) Lost
Fanuc · Alpha i series AC Servo Motor
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The DRDY (Drive Ready) signal has transitioned to 0, indicating that the servo amplifier is not in a ready state. This often occurs during initial power-up or after a fault, preventing motor operation.
Häufige Ursachen
- Servo amplifier internal readiness conditions not met.
- Initial power-up sequence not completed or interrupted.
Reparaturschritte & Checkliste
Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.
- 1
Cycle power to the servo amplifier.
- 2
Verify power supply stability and input voltage levels for the servo amplifier.
Verifizierte technische Daten. Zuletzt aktualisiert: March 2026
Verwandte Fehlercodes
Quelle: Fanuc Alpha i series AC Servo Motor