Reducing Motor Noise Or Leakage Current - Omron VS mini J7 User Manual

Reducing motor noise or leakage current (n46)
Set inverter output transistor switching frequency (carrier frequency).
Setting
Carrier Frequency
7 12 fout
8 24 fout
9
36 fout
1
2.5
2
5.0
3
7.5
4
10.0
Setting values 7, 8, or 9 multiplies output frequency according to output
frequency value.
n46=7
fc=12 fout
n46=8
fc=24 fout
n46=9
fc=36 fout
Metallic Noise
from Motor
(Hz)
(Hz)
Higher
(Hz)
(kHz)
Not
(kHz)
audible
(kHz)
(kHz)
fc=CARRIER FREQUENCY
2.5kHz
1.0kHz
83.3Hz
fc=CARRIER FREQUENCY
2.5kHz
1.0kHz
41.6Hz
fc=CARRIER FREQUENCY
2.5kHz
1.0kHz
27.7Hz
Noise and Current
Leakage
Smaller
Larger
fout=OUTPUT
FREQUENCY
208.3Hz
fout=OUTPUT
FREQUENCY
104.1Hz
fout=OUTPUT
FREQUENCY
69.4Hz
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