Connecting The Cable Shield For Bus Cables - Siemens SIMATIC ET 200AL System Manual

4.4

Connecting the cable shield for bus cables

In the S7-1500, ET 200MP and ET 200SP systems, the cable shields of PROFIBUS and
PROFINET cables are connected to the existing bus connection elements. Cable shield and
shield support are thus galvanically connected to each other. If the connector is plugged into
the module, the coupled interferences are diverted via the module carrier to the ground.
There is no need for the otherwise standard connection of the shield at the cabinet entry.
The following figure shows examples of the shield connection for various bus connection
elements.
①
②
③
④
Figure 4-5
Reference
For more information on installing the connectors, refer to the "Connecting PROFINET IO
BusAdapter BA 2xRJ45 to the interface module" chapter of the system manual ET 200SP
Distributed I/O System (http://support.automation.siemens.com/WW/view/en/58649293) and
to the supplied product information.
Designing interference-free controllers
Function Manual, 06/2014, A5E03461486-AB
BusAdapter BA 2xRJ45 for ET 200SP
PROFIBUSconnector, 9-pin D-Sub
PROFINETconnector RJ45
Shield support of respective connector
Shield connection for bus connection elements
4.4 Connecting the cable shield for bus cables
Cable shielding
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