Appendix F: Safety Characteristics - SMC Networks EX245-FPS1 Operation Manual

22. Appendix F: Safety Characteristics

Operation
Item
SFF
PFDAV (T)
Average Probability of
Dangerous Failure
PFH (T)
Probability of dangerous
failure per hour
Achievable Safety Level
Comment:
The Outputs and internal Safety Logic always operate in Two-Channel Mode.
The Module achieves with or without Two-Channel-Inputs Safety Level SIL3 / PL e.
In combination with Single-Channel-Inputs the Module can only achieve SIL2 / PL d.
Output with Two
Outputs
Channel
(only)
Input
99.98%
1% of 10
1% of 10
SIL3 / PL e
Output with
Two Channel
Single Channel
Input (only)
-3
-7
- 109 -
Single Channel
Input (only)
Input
99.98%
1% of 10 -2
1% of10 -6
SIL2 / PL d
No.EX##-OMY0004