Wiring
6.8 Connecting shielded cables to the shielding contact element
S7-300, CPU 31xC and CPU 31x: Installation
6-12 Operating Instructions, Edition 08/2004, A5E00105492-05
6.8 Connecting shielded cables to the shielding contact element
Application
The shielding contact element allows easy grounding of all shielded cables of S7 modules,
due to its direct contact to the mounting rail.
Design of the shielding contact element
The shielding contact element consists of:
• a bracket with two screw bolts for rail mounting (order no.: 6ES5 390-5AA00-0AA0) and
• the shielding terminals.
You must use the following shielding terminals, based on the shielding diameter of your
cables:
Table 6-9 Shielding diameter assignment to shielding terminals
Cable with shielding diameter Shielding terminal order no.:
2 cables, each with shielding diameter of 2 mm to 6 mm 6ES7 390-5AB00-0AA0
1 cable, shielding diameter 3 mm to 8 mm 6ES7 390-5BA00-0AA0
1 cable, shielding diameter 4 mm to 13 mm 6ES7 390-5CA00-0AA0
The shielding contact element width is 80 mm and provides two rows, each with 4 shielding
terminals.
Shielding contact element Installation underneath two signal modules
1. Push the two screw bolts of the bracket into the guide on the underside of the mounting
rail.
2. Place the bracket underneath the modules whose shielded cables are to be terminated.
3. Screw-tighten the bracket onto the rail.
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