Chapter 4 Description of Parameters | VFD-VJ
4-43
Carrier frequency
Control mode
FOCPG FOCPM
Factory setting: 5
Settings 4~ 10KHz
When this parameter is configured, please restart the hybrid servo drive.
The carrier frequency of the PWM output has a significant influence on the electromagnetic noise of the
motor. The heat dissipation of the hybrid servo drive and the interference from the environment may also
affect the noise. Therefore, if the ambient noise is greater than the motor noise, reducing the carrier
frequency of the drive may have the benefits of reducing a temperature rise; if the carrier frequency is high,
even if a quiet operation is obtained, the overall wiring and interference control should be taken into
consideration.
When the carrier frequency increases, the rated current decreases as shown in the table below. So the
overload capacity also decreases.
Carrier
Frequency (kHz)
Rated Current (Pr.00-01)
4 100%
5 100%
6 90%
7 82%
8 75%
9 68%
10 62%
Reserved
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