SV0488
SELF TEST OVER TIME
Fanuc · αi Series Servo Amplifier
What does SV0488 mean?
The MCC off Test was not completed within the time specified by parameter No. 1946. This indicates a potential issue with the MCC (Motor Contactor) contact operation, its wiring, or an inappropriately set test time.
Repair Steps
- 1
Inspect the MCC (Motor Contactor) contact for proper operation, mechanical integrity, and wear.
- 2
Verify the value of parameter No. 1946, which defines the maximum allowable time for the MCC off Test, and adjust if necessary.
Verified technical data. Last updated: March 2026
Source: Fanuc αi Series Servo Amplifier