Electrical Configuration Of The S7-1500 - Siemens SIMATIC S7-1500 System Manual

Wiring

6.3 Electrical configuration of the S7-1500

6.3 Electrical configuration of the S7-1500
Electrical isolation
With the S7-1500, there is galvanic isolation between:
● The primary side of the system power supply (PS) and all other circuit components
● The (PROFIBUS/PROFINET) communication interfaces of the CPU and all other circuit
components
● The load circuits / process electronics and all other circuit components of the S7-1500
components
High-frequency interference currents are conducted and electrostatic charges are avoided
through integrated RC combinations or integrated capacitors.
The following figure shows a simplified representation of the potential relationships of the
S7-1500 automation system.
Figure 6-2 Potential relationships for S7-1500 with CPU 1516-3 PN/DP
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S7-1500 Automation System
System Manual, 02/2014, A5E03461182-AB