Mechanical and electrical configuration
X20 system User's Manual 3.10
85
3.6 Shielding
In principle, the shield must be grounded in all shielded cables:
•
Analog signals (inputs and outputs)
•
Interface modules
•
Counter modules
•
X2X Link cables
•
Fieldbus connections (PROFIBUS DP, CAN bus, etc. )
In general, the following guidelines apply for shielding:
•
The X20 top-hat rail must always be mounted to a conductive backplane.
•
Shielded cables must be grounded on both sides.
3.6.1 Direct shielding connection
The shield is twisted and connected to the bus module's ground connection using a cable lug (2.8 x 0.5 mm). The
cable is additionally secured to the terminal block using a cable tie (stress relief).
Figure 27: Direct shielding connection
Information:
The ground connection should be made as short and with as little resistance as possible.
Summary of Contents for X20 System
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