Pwm Carrier Frequency Selection (Pr. 72, Pr. 240) - Mitsubishi Electric FR-V560 Instruction Manual

Operation selection function 2 (Pr. 65 to Pr. 79)
4.11.3 PWM carrier frequency selection (Pr. 72, Pr. 240
By parameter setting, you can set to exercise the Soft-PWM control that changes the motor tone .
• Soft-PWM control is a control system that changes the motor noise from a metallic tone into an unoffending
complex tone.
Parameter Name
PWM frequency
72
selection
240 Soft-PWM setting
<Setting>
Pr. 72
Description
Setting
1
2
3
4
5
6
CAUTION
1. An increased PWM carrier frequency will decrease the motor sound but increase noise and leakage
currents. Therefore, perform the reduction techniques. (Refer to page 19.)
Description
Pr. 240
Setting
Soft-PWM
0 Invalid
Valid
1
(when Pr. 72 = "1 or 2")
Factory Setting Setting Range
1
0
2.25kHz
4.5kHz
6.75kHz
9kHz
11.25kHz
13.5kHz
with without
Encoder Encoder
Speed
Remarks
1 to 6 Simple mode
0, 1 Extended mode
124
with without Condi-
tional PLC SSC
Encoder Encoder
Torque Position
)