8 • vacon
layout and connections
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3
3.2
Grounding of bus cable shield in OPT-C4
The bus cable shield can be grounded to the frame of the frequency converter through an RC filter
located on the OPT-C4 board.
Note: Normally, the option board has already been installed in slot E of the control board. It is not
necessary to detach the whole board for the grounding of the bus cable shield. Just detach the
terminal block.
3.2.1
Grounding the bus cable shield directly to the frequency converter frame using the RC-
filter
1
Strip about 5 cm of the cable as
shown in the picture.
Figure 3-2.
2
Leave no more than 7 mm of the
data cable outside the terminal
block (Figure 3-3) and strip the data
cables at about 5 mm to fit in the
terminals (Figure 3-4).
Figure 3-3.
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