Alarm 1

Hardware Disconnection (Separate Phase A/B)

Fanuc · αi Series Servo Amplifier

What does Alarm 1 mean?

This alarm is issued when the separate phase A/B scale is used. It indicates a hardware disconnection related to the phase A/B detector.

Repair Steps

  1. 1

    Check whether the phase A/B detector is connected correctly.

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Verified technical data. Last updated: March 2026
Source: Fanuc αi Series Servo Amplifier