What would cause the ATV630 drive to have a surging motor when the drive is running in auto mode?

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Issue:
The ATV630 drive is surging the motor when the drive is running in auto mode.

Product Line:
ATV630

Environment:
All

Cause:
Analog input was getting interference noise and analog input was oscillation up and down.

Resolution:
Check to see if you're experiencing noise on his line causing motor/drive fluctuations. If so, activate the applicable analog input filter (AI1F or AI2F). Set to 5 seconds.