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4/9/2013 12:54 PM | |
Joined: 9/27/2006 Last visit: 10/14/2024 Posts: 12287 Rating: (2685) |
Hello CDL; This type of information used to be available as MTBFresults, as shown in the following document: Mean Time Between Failures (MTBF) - list for SIMATIC products Now it is provided a PFD, based on the new IEC 13849-1 standard, since there were issues on the way the MTBF was calculated. Here are some PFD values for Siemens components and a FAQ explaining how the calculations are developped: What are the requirements for the proof test interval? Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 4/9/2013 12:59 PM |
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