Technical specifications
16.3 Electromagnetic compatibility of fail-safe modules
Automation system
System Manual, 12/2017, A5E03461182-AE
321
16.3
Electromagnetic compatibility of fail-safe modules
Pulse-shaped interference
In the case of surges according to IEC 61000-4-5:2014, the S7-1500/ET 200MP fail-safe I/O
modules without external protective circuit fulfil severity level 2.
Protecting S7-1500/ET 200MP against overvoltages with fail-safe modules
If your system requires protection from overvoltage, we recommend that you use an external
protective circuit (surge filter) between the load current supply and the supply voltage input
of the F-modules to ensure surge immunity for S7-1500/ET 200MP with fail-safe modules.
Note
Lightning protection measures always require a case-by-case examination of the entire
system. An almost complete protection from overvoltages, however, can only be achieved if
the entire building surroundings have been designed for overvoltage protection. In particular,
this involves structural measures in the building design phase.
For detailed information regarding overvoltage protection, we recommend that you contact
your Siemens representative or a company specializing in lightning protection.
You can find more information on protection from overvoltage in the Designing interference-
free controllers (
http://support.automation.siemens.com/WW/view/en/59193566
) function
manual.
Summary of Contents for Simatic S7-1500/ET 200MP
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