Electrical Configuration; Wiring Rules - Siemens SIMATIC S7-1500 System Manual

Wiring

7.4 Wiring rules

7.3

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 7-2 Potentials in S7‑1500R/H using the example of CPU 1515R‑2 PN
7.4 Wiring rules
Introduction
Use suitable cables to connect the S7-1500R/H redundant system. The tables below set out
the wiring rules for the R/H-CPUs and load current supply.
174
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD