4-303
WARNING! Electric Shock Hazard
High voltage is supplied to the motor when performing an auto-tune, even when the motor is stopped, which could
result in death or serious injury. Do not touch the motor when performing magnetic pole realignment until the
auto-tuning procedure is completed.
WARNING! Holding Brake
Do not perform a magnetic pole realignment auto-tuning procedure when the motor is connected to a brake this
may result in incorrect motor data calculation.
Disconnect the motor and the load and confirm that the motor can freely run.
1. Before selecting PM motor tuning, enter the motor data (22-00) - (22-06) according to the motor nameplate and
the number of encoder pulses (20-27).
2.
a) Use parameter 22-21 to select tuning mode.
b) Next press the enter key to go to the PM motor tuning screen. The keypad will display the message of
"IPrdy" (Ready to Tune).
c) Press run to start the PM
motor tuning. The keypad will display the “IPtun" message during auto-tune.
d) If the motor is successfully tuned, the message of "IPEnd " will be displayed. If auto-tune is aborted with
the stop key, the operator will display the message of " IPbrd "(PM motor tuning aborted).
Notes:
1. Perform a magnetic pole alignment auto-tune before adjusting the speed loop.
2. It is not required to perform a magnetic pole alignment auto-tune each time the inverter is powered up.
22-22: Fault History of PM Motor Tuning
Parameter 22-22
shows the PM motor tuning fault history. If PM motor tuning has failed, the “IPErr” message is
shown on the keypad (PM motor tuning failure); Refer to section 5 for the possible error causes and trouble
shooting.
Note:
PM motor tuning fault history (22-22) only stores the result of the last auto-tune performed .If auto-tuning
was successful or aborted no error will be displayed.
