Siemens SIMATIC ET 200SP System Manual page 57

ET 200SP in the overall configuration
The figure below shows the overall configuration of the ET 200SP distributed I/O system
(load current supply and grounding concept) with supply from a TN-S network.
①
Main switch
②
Short-circuit / overload protection
③
The load current supply (galvanic isolation)
Figure 5-1 ET 200SP in the overall configuration
Distributed I/O system
System Manual, 12/2015, A5E03576849-AF
5.3 Operating the ET 200SP on grounded incoming supply
Wiring
57