Siemens SIMATIC ET 200SP User Manual page 43

The figure below shows a CPU 1515SP PC (F) in the overall configuration with infeed from a
TN-S system. The power supply supplies the CPU 1515SP PC (F) and the load circuits for
the 24 V DC modules.
With the CPU 1515SP PC (F) there is a fixed connection between the ground infeed terminal
and the contact springs to the mounting rail. You must ground the mounting rail separately in
the control cabinet.
①
②
③
④
Figure 5-2
CPU 1515SP PC (F)
Manual, 05/2017, A5E32701806-AC
Master switch
Short-circuit and overload protection
Load current supply (galvanic isolation)
In the CPU 1515SP PC (F), this connection is automatically established.
The represented layout of the power connections does not correspond to the actual layout; it
was chosen for demonstration purposes only.
Connecting the load voltage reference potential
Connection
5.3 Electrical configuration
43