SV0474

EXCESS ERROR (STOP:SV)

Fanuc · αi Series Servo Amplifier

What does SV0474 mean?

The servo detected that the positional deviation during stopping exceeded the parameter (No. 1839, No.1842) setting value. This indicates a failure of the axis to hold its commanded stop position within tolerance, potentially due to mechanical issues or incorrect tuning.

Repair Steps

  1. 1

    Verify the values of parameters No. 1839 and No.1842, which define the allowable positional deviation during stopping.

  2. 2

    Inspect the mechanical brake for proper operation and wear on the affected axis.

  3. 3

    Check for external forces, excessive load, or increased friction that could cause unexpected movement while stopped.

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