Avoiding interference
31
04/99 AWB 2700-1311 GB
In order to keep interference to a minimum ensure
that the cabling inside and outside of the control
cabinet is carried out correctly. Proceed as follows:
왘 Avoid long, parallel cable runs with cables of
different power ratings next to one another.
왘
Separate AC cables from DC cables.
Keep the following minimum clearances:
At least 10 cm (approx. 4 inches) between power
cables and signal cables
At least 30 cm (approx. 12 inches) between power
and data/analog cables.
왘 When laying cables ensure that supply and return
lines of a circuit are kept together. The opposing
direction of current flow makes the sum of all
currents zero, so any fields that are produced are
balanced out.
H1311g.bk Seite 31 Freitag, 4. Juni 1999 1:12 13
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