Electrical Configuration - Siemens SIMATIC S7-1500 System Manual

Wiring

8.3 Electrical configuration

Note
If you connect the S7-1500R/H redundant system via upstream local power supplies to your
own distribution (or batteries), then you do not have to provide any additional protective
measures against overvoltage.
8.3 Electrical configuration
Galvanic isolation
In the redundant System S7-1500R/H, there is electrical isolation between:
• The communication interfaces (PROFINET) of the R-CPU and all other circuit components
• The communication interfaces (PROFINET) of the H-CPU and all other circuit components
High-frequency interference currents are conducted and electrostatic charges are avoided
through integrated RC combinations or integrated capacitors.
S7-1500R/H potentials
The figure below is a simplified diagram of potentials in the S7-1500R/H redundant system.
Figure 8-2
264
Potentials in S7-1500R/H using the example of CPU 1515R-2 PN
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF