Siemens SIMATIC S7-1500 Automation System

Wiring
6.2 Operating the S7-1500 on grounded infeed
S7-1500 Automation System
System Manual, 01/2013, A5E03461182-01
57
S7-1500 in the overall configuration
The figure below shows the overall configuration of the S7-1500 (load voltage supply and
grounding concept) with infeed from a TN-S network.
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① Main switch
② Short-circuit and overload protection on the primary side
③ Short-circuit and overload protection on the secondary side
④ The load current supply (galvanic isolation)
Figure 6-1 Operating the S7-1500 with grounded reference potential