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
Check whether the phase A/B detector is connected correctly.
Verified technical data. Last updated: March 2026
Source: Fanuc αi Series Servo Amplifier