NOTE
• Reducing the PWM carrier frequency is effective as a countermeasure against EMI from the inverter or for reducing leakage
current, but doing so increases the motor noise.
• When the PWM carrier frequency is set to 1 kHz or lower (Pr.72 ≤ 1), the increase in the harmonic current causes the fast-
response current limit to activate before the stall prevention operation, which may result in torque shortage. In this case,
disable the fast-response current limit in Pr.156 Stall prevention operation selection.
Parameters referred to
Pr.156 Stall prevention operation
selectionpage 214
Pr.570 Multiple rating
settingpage 134
Pr.800 Control method
selectionpage 86
7. (E) Environment Setting Parameters
7.12 PWM carrier frequency and Soft-PWM control
1
2
3
4
5
6
7
8
9
10
147