4-232
22-16: Q-axis Inductance of PM Motor
S
et motor’s Q-axis Inductance in increments of 0.001mH. Value is set automatically during motor tuning (22-21).
22-18: Flux-Weakening Limit
Sets the flux-weakening limit as a percentage of the motor rated current. If the motor maximum rotation speed
(22-05) is set to a value greater than the motor rated rotation speed (22-04) the inverter will automatically enable
flux-weakening control.
22-21: PM Motor Tuning
WARNING!
Sudden start: The inverter and motor may start unexpectedly during Auto-Tuning, which could result in death or
serious injury. Make sure the area surrounding of the motor and load are clear before proceeding with
Auto-Tuning.
WARNING! Electric Shock Hazard
High voltage is applied 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 before performing the auto-tuning procedure is
completed.
WARNING! Holding Brake
Do not perform an 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) Set parameter 00-00=5, and select tuning mode with parameter 22-21.
(2) Next press the enter key to go to the PM motor tuning screen. The keypad will display "IPrdy" (Ready to
Tune).
(3) Press run key
to start the PM motor tuning. The keypad will display “IPtun" during auto-tune.
(4) If the motor tuning is successfully, the message of "IPEnd " will be displayed. If auto-tune is aborted with the
stop key, the operator will displays " IPbrd " (PM motor tuning aborted).
Note:
Once an auto-tune is performed successfully it is not required to perform motor tuning again when powering up
the inverter.
22-23: PM SLV acceleration time
PM SLV acceleration time is the acceleration time used to go from static to I/F Mode Start Frequency Switching
Point (22-11).
Note:
In case of an error or vibration in PMSLV mode increase or decrease acceleration time.
22-25: Initial position detection of PM motor
Use in PMSLV control mode only. When 22-25=1, the inverter will automatically detect the initial position of motor
rotor while the motor running to prevent the motor from running in the opposite direction.
When 22-25=0, detection function is disabled, inverter will not perform any detection while the motor is running.
