YASKAWA Varispeed V7 - Reducing Motor Noise or Leakage Current Using Carrier Frequency Selection (n080)

7. Programming Features
151
 Reducing Motor Noise or Leakage Current Using Carrier Fre-
quency Selection (n080)
Set the Inverter output transistor switching frequency (carrier fre-
quency).
Setting Carrier Frequency (kHz) Metallic Noise
from Motor
Noise and Cur-
rent Leakage
7 12 fout (Hz)
8 24 fout (Hz)
9 36 fout (Hz)
1 2.5 (kHz)
2 5.0 (kHz)
3 7.5 (kHz)
4 10.0 (kHz)
5 12.5 (kHz)
6 14.5 (kHz)
Higher
Not
audible
Larger
Smaller