Wiring
6.2 Additional rules and regulations for operation of the S7-1500/ET 200MP with fail-safe modules
Automation system
System Manual, 12/2017, A5E03461182-AE
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Power supply requirements in case of voltage interruptions
Note
Always use power packs or power supply units (24 VDC) with a mains buffering time of at
least 20 ms to ensure adherence to IEC 61131-2.
Also take into consideration the respective requirements of your product standards regarding
mains buffering time.
Information on the power supply components is available on the Internet
https://mall.industry.siemens.com
6.2.2
Requirements of sensors and actuators for fail-safe modules
General requirements for sensors and actuators
Note the following important warning regarding safety-related use of sensors and actuators:
WARNING
Note that instrumentation with sensors and actuators bears a considerable safety
responsibility. Also bear in mind that sensors and actuators generally do not have a service
life of 20 years as defined in IEC 61508:2010 without considerable loss of safety.
The probability of hazardous faults and the rate of hazardous faults of safety functions must
comply with an SIL-defined high limit. A listing of values achieved by F-modules in the
technical specifications of the F-modules is available under "Fail-safe performance
characteristics".
To achieve the respective safety class, suitably qualified sensors and actuators are
necessary.
Summary of Contents for Simatic S7-1500/ET 200MP
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