Electrical Design Of The Cm - Siemens SIMATIC RF185C Operating Instructions Manual
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5.3
Electrical design of the CM
Electrical isolation
In the electrical design of the communication module, electrical isolation is provided
between:
• Load voltage 2L+ and all other circuit components
• Communication interfaces (PROFINET) of the communication module and all other circuit
components
The following figure shows the potential relationships of the communication modules.
Figure 5-6
Circuit breaker
According to IEC 60364, line protection is required, i.e. the supply lines must always be
protected externally.
SIMATIC RF185C, RF186C, RF188C, RF186CI, RF188CI
Operating Instructions, 03/2022, C79000-G8976-C512-04
Potential relationships of the communication modules
Connection
5.3 Electrical design of the CM
35
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