Mitsubishi Electric 800 Series Instruction Manual page 155

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
Pr.570 Multiple rating settingpage 140
Pr.800 Control method selectionpage 88
154
7. (E) Environment Setting Parameters
7.14 PWM carrier frequency and Soft-PWM control
selectionpage 222