Fanuc · Alpha i Series Servo Amplifier
An abnormal phase data alarm occurred on the built-in Pulsecoder. This suggests an issue with the phase signal generation or detection within the Pulsecoder.
Click steps to track your progress.
Inspect Pulsecoder for signs of impact or contamination.
Measure phase signals (e.g., A, B) from the Pulsecoder for proper timing.
Check for presence of strong magnetic fields near the encoder.
If accessible, clean Pulsecoder sensor surfaces.