8 • vacon layout and connectionsTel: +358-201-2121 • Fax: +358-201-212 20533.2 Grounding of bus cable shield in OPT-C4The bus cable shield can be grounded to the frame of the frequency converter through an RC filterlocated on the OPT-C4 board.Note: Normally, the option board has already been installed in slot E of the control board. It is notnecessary to detach the whole board for the grounding of the bus cable shield. Just detach theterminal block.3.2.1Grounding the bus cable shield directly to the frequency converter frame using the RC-filter1 Strip about 5 cm of the cable asshown in the picture.Figure 3-2.2 Leave no more than 7 mm of thedata cable outside the terminalblock (Figure 3-3) and strip the datacables at about 5 mm to fit in theterminals (Figure 3-4).Figure 3-3.Archived Document