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. 1

    Inspect the MCC (Motor Contactor) contact for proper operation, mechanical integrity, and wear.

  2. 2

    Verify the value of parameter No. 1946, which defines the maximum allowable time for the MCC off Test, and adjust if necessary.

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Verified technical data. Last updated: March 2026
Source: Fanuc αi Series Servo Amplifier