User Manual

50/118
Siemens TX-I/O Engineering and installation guide CM110562en_13
Building Technologies Wiring 2019-05-15
• For more information, refer to Section 5.3 "EMC compliant control panel".
• Special rules for connecting the screen apply in environments exposed to explosion
hazards.
Screened cables are compulsory!
The cable screens of screened conductors must be connected to the metal structure of
the control panel at the point of entry to the control panel, and to the equipotential
bonding system of the building.
The following diagrams show the correct connection of screened and unscreened
cables to the earth rail and cable fixing rails.
Use only standard commercially available screen-connection terminals to ensure good
connections.
Fixing the cables in the control panel
10762z019
I/O module
Support rail
Continue the screen up to
the module – but do not
connect it to the module!
Cable fixing rail
Screen connection
Screen bus
Screened cable
Unscreened cable
The screen bus must not be used for cable tension relief.
Connecting the screen with a screen clamp
10762z020
Screen clamp
10762z021
Screen bus Support rail
10762z022
Avoid screen pigtails!
Notes
Ethernet
cables for
PROFINET BIM
Fixing the cables in
the control panel