5 Installation
5.3 Interfaces
34
MICRO PANEL XP-702
07/2011 MN04802003Z-EN
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5.3.2
Preparation of cables with D-Sub connector
The preparation of bus cables is an essential factor in ensuring reliable operation and electromagnetic
compatibility (EMC).
Wiring requirements
The cables must be shielded.
The cable shield must be made from a copper braid.
The cable shield must make a low impedance connection with the connector casing over a large
contact area. This is achieved by:
Use of metal or metallized connector casings with a cable clamp for strain relief.
The cable clamp must be screwed securely to the connector.
Connecting the cable
shield
1
Strip the cable end so that approx. 3 cm of the shield braid is exposed.
2
Fold back the shield braid over the cable shield.
3
Fit approx. 3 cm of heat shrinkable tubing over the folded back end of the shield braid or use a
rubber grommet.
5…8 mm of the shield braid must be exposed at the cable end.
The folded back shield braid end must be covered by the heat shrinkable tubing or by the
rubber grommet.
4
Fit the D-Sub connector to the cable end:
The exposed metal shield braid must be clamped to the connector casing with the cable clamp.
Fig. 9 Connecting the cable shield
30 mm
5…8 mm
1
2
3
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