Cause : Measured inertia has exceeded the parameter range or commutation signals changed in wrong direction comes when the drive has tripped during a rotating autotune or mechanical load measurement test. The cause of the trip can be identified from the associated sub-trip number.

Sub-trip & Reason

1 Measured inertia has exceeded the parameter range during a mechanical load measurement
2 The commutation signals changed in the wrong direction during a rotating autotune
3 The mechanical load test has been unable to identify the motor inertia.