0474

Observer Parameter (POA1) Overflow

Fanuc · αi Series Servo Amplifier

What does 0474 mean?

This invalid parameter setting alarm indicates that the internal calculation value of the observer parameter POA1 has overflowed. This suggests an incorrect setting for the observer parameter, causing internal calculation limits to be exceeded.

Repair Steps

  1. 1

    Correct the setting of the observer parameter to (-1) × (desired value)/10.

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