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Safe Performance
Items Standards Performance Level
Safety Integrity Level
IEC 61508 SIL2
IEC 62061 SILCL2
Probability of Dangerous Failure per Hour
IEC 61508,
IEC 62061
PFH ≤ 1.7×10
-9
[1/h]
(0.17% of SIL2)
Category EN 954-1 Category 3
Performance Level EN ISO 13849-1 PL d (Category 3)
Mean Time to Dangerous Failure of Each
Channel
EN ISO 13849-1 MTTFd: High
Average Diagnostic Coverage EN ISO 13849-1 DCave: Low
Stop Category IEC 60204-1 Stop category 0
Safety Function IEC 61800-5-2 STO
Proof test Interval IEC 61508 10 years
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