Frequently Asked Questions

I would like to know the main differences between selecting the Application Test Mode of IEC 61508:2000 and the Appplication Test Mode of IEC 61508:2010.‚Äč
Last Updated a year ago

IEC 61508:2000 and IEC 61508:2010 have a different way of handling diagnostic test intervals. In the 2000 version, if the diagnostic interval was at least 10 times smaller than the proof test interval, one could model the diagnostic through "detected" failure rates. In 2010, the interval always needs to be considered. This is the difference between the two options. For any new evaluations we suggest choosing the 2010 option

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