SV0382
COUNT MISS(EXT)
Fanuc · Alpha i Series Servo Amplifier
What does SV0382 mean?
A count error occurred on the separate detector, indicating that pulses were missed during counting. This directly affects the accuracy of position tracking by the external detector.
Common Causes
- External detector is operating at speeds exceeding its counting capacity.
- Vibration causing intermittent loss of external detector signal lock.
- External detector internal logic circuit failure.
- Data transmission corruption impacting pulse counts from external detector.
- Mechanical backlash or slippage in the driven system.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Reduce the velocity command to the servo.
- 2
Securely mount the external detector and associated components.
- 3
Test external detector pulse counting against a known reference.
- 4
Ensure clean signal transmission for the external detector.
- 5
Inspect mechanical linkages for play or excessive slack.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fanuc Alpha i Series Servo Amplifier