154
5. PARAMETERS
5.3 Speed control under PM motor control
5.3 Speed control under PM motor control
Speed control performs control so that the speed command and the actual motor rotation speed match.
5.3.1 Setting procedure of PM motor 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 motor control.
1. Set the motor. (Pr.9, Pr.71, Pr.80, Pr.81, Pr.83, Pr.84) (Refer to page 351, 363.)
Set "8093 (IPM motor)" or "9093 (SPM motor)" in Pr.71 Applied motor. Set 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.)
2. Perform offline auto tuning for a PM motor. (Pr.96) (Refer to page 363.)
Set "1" (offline auto tuning without rotating motor) in Pr.96, and perform tuning.
3. Configure the initial setting for the PM motor control using Pr.998. (Refer to page 151.)
When the setting for the PM motor is selected in Pr.998 PM parameter initialization, the PM motor control is
selected.
"8009": Parameter (rotations per minute) settings for a PM motor
"8109": Parameter (frequency) settings for a PM motor
"9009": Parameter (rotations per minute) settings for an SPM motor
"9109": Parameter (frequency) settings for an SPM motor
4. Set parameters such as the acceleration/deceleration time and multi-speed setting.
Set parameters such as the acceleration/deceleration time and multi-speed setting as required.
5. Set the operation command. (Refer to page 204.)
Select the start command and speed command.
6. Perform the test operation.
• To change to the PM motor control, perform PM parameter initialization at first. If parameter initialization is performed after
setting other parameters, some of those parameters will be initialized too. (Refer to page 152 for the parameters that are
initialized.)
• Constant-speed operation cannot be performed in the low-speed range of 150 r/min or less.
• During PM motor control, the RUN signal is output about 100 ms after turning ON the start command (STF, STR). The
delay is due to the magnetic pole detection.
Purpose Parameter to set Refer to
page
To adjust the gain during PM
motor control
Speed control gain
adjustment
P.G211 to P.G214,
P.G311 to P.G314
Pr.820, Pr.821, Pr.824,
Pr.825, Pr.830, Pr.831,
Pr.834, Pr.835
155
To stabilize torque feedback
signal
Torque detection filter P.G216, P.G316 Pr.827, Pr.837 158
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