Warning /Alarm 61 in VLT FC301/ FC302 : Feedback Error - comes when an error between calculated speed and speed measurement from feedback device.

1. Check the settings for warning/alarm/disabling in parameter 4-30 Motor Feedback Loss Function.
2. Set the tolerable error in parameter 4-31 Motor Feedback Speed Error.
3. Set the tolerable feedback loss time in parameter 4-32 Motor Feedback Loss Timeout