Mitsubishi Electric 800 Series Instruction Manual page 715

2
Vector control for PM motor with encoder supported
When the FR-A8AL or FR-A8TP is installed, the PM motor with an encoder, as well as the induction motor with an
encoder, can be driven under vector control. (For the setting of vector control for an induction motor, refer to the
Instruction Manual (Detailed) of the inverter).
 Control method
V/F control (orientation control, encoder feedback control)
Advanced magnetic flux vector control (orientation control, encoder feedback control)
Vector control
: Supported, : Not supported
 Setting procedure of vector control for motor with encoder
Follow the following procedure to change the setting for the vector control for the motor with an encoder.
Set the applied encoder. (Pr.359 (Pr.852), Pr.369 (Pr.851))
Set the following parameters according to the encoder to be used: Pr.359 Encoder rotation direction
and Pr.369 Number of encoder pulses when the FR-A8AL is installed, and Pr.852 Control terminal
option-Encoder rotation direction and Pr.851 Control terminal option-Number of encoder pulses
when the FR-A8TP is installed.
Set the motor. (Pr.9, Pr.71, Pr.80, Pr.81, Pr.83, Pr.84)
Set Pr.71 Applied motor, Pr.9 Rated motor current, Pr.80 Motor capacity, Pr.81 Number of motor
poles, Pr.83 Rated motor voltage, and Pr.84 Rated motor frequency according to the motor
specifications. (Setting "9999 (initial value)" in Pr.80 or Pr.81 selects V/F control.)
Set Pr.702, Pr.706, Pr.707, Pr.724, or Pr.725 as required for the PM motor.
Select vector control (other than position control). (Refer to
Perform offline auto tuning for induction motors, or perform offline auto tuning and the encoder position
tuning for PM motors. (Pr.96) (Refer to
Set Pr.96, and perform tuning.
Induction
PM motor
motor
Configure the initial parameter setting for the applied motor using Pr.998.
When the setting for the PM motor is selected in Pr.998 PM parameter initialization, the vector
control for the motor with an encoder is selected.
"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
"9009": Parameter (rotations per minute) settings for an SPM motor
"9109": Parameter (frequency) settings for an SPM motor
Under position control
Test operation
NOTE
• For PM motors, after performing offline auto tuning and encoder position tuning, first perform PM parameter
initialization. If parameter initialization is performed after setting other parameters, some of those parameters will be
initialized too. (For the parameters to be initialized, refer to the Instruction Manual (Detailed) of the inverter.)
Control method
• Set Pr.800 again. (Refer to
page 3.)
page 3.)
page 3.)
2
IM PM
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

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 
BCN-C22005-910