Mitsubishi Electric FR-A720-0.4K Instruction Manual page 499

1.1 Setting procedure of PM sensorless vector control
· This inverter is set for a general-purpose motor in the initial setting. Follow the following procedure to change the
setting for the PM sensorless vector control.
Driving an MM-CF IPM motor
Perform IPM parameter initialization by selecting IPM in the parameter setting mode on the operation
panel.* (Refer to page 3)
Set "3003" (MM-CF IPM motor parameter setting (rotations per minute)) in
initialization) to select the PM sensorless vector control.
P.RUN on the operation panel (FR-DU07) is lit when PM sensorless vector control is set.
Set parameters such as the acceleration/deceleration time and multi-speed setting.
Set the operation command. (Refer to the Instruction Manual.)
Test run
* Two IPM parameter initialization methods are available for MM-CF IPM motors; setting Pr.998 IPM parameter initialization, and selecting
(IPM parameter initialization) mode on the operation panel. One of the two methods can be selected.
To change to the PM sensorless vector control, perform IPM parameter initialization at first. If parameter initialization is performed after
setting other parameters, some of those parameters will be initialized too. (Refer to page 6 for the parameters that are initialized.)
REMARKS
· "Er1" appears if IPM parameter initialization is performed while Pr.72 = "25."
· To use a motor capacity that is one rank lower than the inverter capacity, set Pr. 80 Motor capacity before performing
IPM parameter initialization.
· To perform PM sensorless vector control on an IPM motor other than MM-CF, contact your sales representative.
Driving an IPM motor other than MM-CF
Make the motor setting. (Pr. 71, Pr. 80, Pr. 81, etc.) (Refer to page 7)
Set "8093" (IPM motor other than MM-CF) in Pr. 71 Applied motor, the motor
capacity (kW) in Pr. 80 Motor capacity, and the number of poles in Pr. 81
Number of motor poles. Refer to page 7 for other parameters.
(Setting "9999 (initial value)" in Pr. 80 or Pr. 81 selects V/F control.)
Perform offline auto tuning for an IPM motor. (Pr.96) (Refer to page 7)
To perform tuning, set "1" (offline auto tuning without rotating motor (for other
than MM-CF)) in Pr. 96.
Use Pr.998 to perform IPM parameter initialization. (Refer to page 4)
Setting "8009" or "8109" in Pr. 998 IPM parameter initialization selects the IPM
motor parameter settings.
"8009": Parameter (rotations per minute) settings for an IPM motor other than MM-CF
"8109": Parameter (frequency) settings for an IPM motor other than MM-CF
Set parameters such as the acceleration/deceleration time and multi-speed setting
as required.
Select the start command and speed command.
As required for MM-CF.
· Perform offline auto tuning for an IPM motor. (Refer to page 7)
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P M P M P M
(IPM parameter
BCN-C22005-634