2-24
D Countermeasures against Radio Interference
Radio
noise is generated from the Inverter as well as the input and output lines. T
o re
-
duce
radio noise, install Noise Filters on both input and output sides, and also install the
Inverter in a totally enclosed steel box.
The cable between the Inverter and the motor should be as short as possible.
Power supply
Noise
Filter
Steel box
3G3JV
SYSDRIVE
Metal pipe
Noise
Filter
D Cable Length between Inverter and Motor
If
the cable between
the Inverter and the motor is long, the high-frequency leakage cur
-
rent
will increase, causing the Inverter output current to increase as well. This may af
fect
peripheral devices.
To
prevent
this, adjust the carrier frequency (set in n46) as shown in the table below
. For
details, refer to the parameter settings.
Cable length 50 m max. 100 m max. More than 100 m
Carrier frequency 15 kHz max. 10 kHz max. 5 kHz max.
Design Chapter
2
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