Fanuc · Alpha i Series Servo Amplifier
A pulse error occurred on the built-in Pulsecoder, indicating that expected pulses were not detected. This impacts the accuracy of position feedback from the internal encoder.
Click steps to track your progress.
Measure signal amplitude on internal Pulsecoder output terminals.
Inspect internal Pulsecoder encoder disk for scratches or misalignment.
Test internal Pulsecoder signal generation with a known good replacement if possible.
Filter incoming power to the servo drive to reduce noise.
Verify parameter P1-01 (Encoder Pulse Output) matches system requirements.