Chapter 3 Environment description and installation
3-11
Make external connections as shown in figure 3-10. Check after wiring to make sure all
connections are correct. (Do not use the control circuit buzzer to check connections)
(A) Main circuit must be separated from other high voltage or high current power line to avoid
noise interference. Refer to following figures:
z
The inverter uses dedicated power line
●
A general noise filter may not provide
correct results
~
IM
EV
Power
z
Please added a noise filter or separation
transformer when the inverter shares the
power line with other machines.
.
z
A noise filter in the output of the main circuit can suppress conductive noise. To prevent radiative
noise, the wires should be put in a ferromagnetic metal pipe and separated from all other signal
lines by at least 1ft.
Metal
box
Power
專
用
雜
訊
濾波器
EV
EV
Power
Power
Machine
Machine
Special
noise
filter
Separation transformer
Insulation transformer
Figure3-10 b Installation examples using a filter
Figure3-10a Installation examples
Incorrect
Incorrect
Figure 3-10c Installation examples with adjacent signal conductors
Correct
MCCB
Ferromagnetic metal
More than 1FT cm
EV
Filter
Control machine
Signal wiring
