ABB DCS800, Руководство по установке

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Control Cable Connection
Connect the control cables to the appropriate terminal block (or optional terminal
block and other options on the DIN rail at the left side of the cabinet). Tighten the
screw to secure the connection. Connect the twisted screen (as short as possible)
to the earthing rail
of the terminal. See also Connection of a cable screen with
the aid of metal clamp to the metal surface and Connection example in accordance
with EMC .
EMC Grounding at the Cable Entry
360° high frequency grounding of the control cable screen at the cable entry is
available as an option from ABB (see
Conductive cushions ).
Side view Top view
Conductive cushions
Special for Top Entry
When each cable has its own rubber grommet, sufficient IP and EMC protection
can be achieved. However, if lots of control cables are connected to one cabinet,
plan the installation beforehand as follows:
1)
Make a list of the cables to be connected to the cabinet.
2) Sort the cables connected to the left into one group and the cables connected
to the right into another group to avoid unnecessary crossing of cables inside
the cabinet.
3) Sort the cables in each group according to size.
4) Group the cables for each grommet as follows:
Cable diameter in mm Max. number of cables per grommet
≤
13
4
≤
17
3
< 25 2
≥
25
1
5)
Divide the bunches so that cables will be arranged according to size between
the conductive cushions.
Electrical Installation
3ADW000352R0101 DCS800-A Installation Manual e a