Connecting
4.1 Safety regulations
SIMATIC TOP connect for S7-1500 and ET200MP
20 Manual,
Protection from electric shock
The S7-1500 automation system mounting rail must be connected (conductive connection)
to the protective conductor to prevent electric shock.
Protection from external electrical interference
The following section details the points to note to prevent electrical interference and faults:
● You must make sure that each plant or system fitted with an S7-1500 is connected to a
protective conductor with a sufficient cross-section to deal with electromagnetic
interference.
● For supply, signal and bus cables, you must make sure that the cables are correctly
routed and installed.
● For signal and bus cables, you must make sure that an open circuit or crossover will not
result in undefined plant or system states.
Further information is available in the "Designing interference-free controllers" function
manual.
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