SV0361
ABNORMAL PHASE DATA(INT)
Fanuc · Alpha i Series Servo Amplifier
What does SV0361 mean?
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.
Common Causes
- Abnormal signals from the Pulsecoder's phase generation circuit.
- Internal misalignment of Pulsecoder components.
- Damage to the Pulsecoder's optical or magnetic sensor.
- External magnetic fields affecting phase detection.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Inspect Pulsecoder for signs of impact or contamination.
- 2
Measure phase signals (e.g., A, B) from the Pulsecoder for proper timing.
- 3
Check for presence of strong magnetic fields near the encoder.
- 4
If accessible, clean Pulsecoder sensor surfaces.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fanuc Alpha i Series Servo Amplifier