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Operation Selection Function Parameters
3.6 Operation Selection Function Parameters
3.6.1 Applied motor (Pr. 71)
<Setting>
Refer to the following list and set this parameter according to the motor used.
3.6.2 PWM carrier frequency (Pr. 72)
<Setting>
Set the motor used.
POINT
•
When using the Mitsubishi constant-torque motor, set "1" in Pr. 71.
The electronic overcurrent protection is set to the thermal characteristic of the
constant-torque motor.
•
When you selected the Mitsubishi constant-torque motor, the values of the following
parameters are automatically changed. (For factory settings only)
Pr. 0 "torque boost", Pr. 12 "DC injection brake voltage"
Parame
ter
Name
Factory
Setting
Setting
Range
71 Applied motor 0 0, 1
Pr. 71 Setting Thermal Characteristics of Electronic Overcurrent Protection
0 Thermal characteristics matching a standard motor
1 Thermal characteristics matching the Mitsubishi constant-torque motor
CAUTION
Set this parameter correctly according to the motor used. Incorrect setting may
cause the motor to overheat and burn.
You can change the motor sound.
Parame
ter
Name
Factory
Setting
Setting
Range
72 PWM frequency selection 1 0 to 15
Parameter Number Setting Description
72 0 to 15
PWM carrier frequency can be changed.
The setting displayed is in [kHz].
Note that 0 indicates 0.7kHz and 15 indicates 14.5kHz.
REMARKS
•An increased PWM frequency will decrease motor noise but noise and leakage current will
increase. Take proper action. (Refer to page
28.)
•Metallic sound may be generated from the motor at sudden deceleration but it is not a fault.