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Fail-safe mode for 1oo2 evaluation
● In accordance with IEC 61508:2010
Systematic Capability
Mode of operation
Meantime to Restoration (MTTR)
Probability of a dangerous failure per hour
(PFH)
Probability of a dangerous failure on demand
(PFD)
Safe Failure Fraction (SFF)
Diagnostic test interval
Proof Test Interval
Lifetime
● In accordance with IEC 13849:2006
Meantime to Failure (MTTF
Meantime to Restoration (MTTR)
Diagnostic Coverage (DC
Performance Level
Category
● In accordance with EN 954-1:1996
Category
9.4
Interface description
9.4.1
Inputs and outputs KP8
X60, connector, 12-pin
KP8, KP8F
Operating Instructions, 10/2010, A5E03284305-01
SIL3
High and low demand mode
100 h
2.55 × 10
1.11 × 10
99.23 %
15 ms
10 y
10 y
)
560 y
d
100 h
)
99.04 %
avg
e
4
4
Technical specifications
9.4 Interface description
1/h
–10
–5
89
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