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What would cause the ATV61 or ATV71 drive to trip on an SOF overspeed fault?
Altivar ATV61, ATV71
This fault appears when an overspeed is present on the drive. Unstable or to large an overhauling load.
The threshold is 110% of the TFR parameter and during 250 ms in open or closed loop mode.
Check the motor parameters and the speed feedback loop if it applies.
Adding a breaking resistor.
Check the size of the motor, drive and or load.
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