xxxi
Safety Parameters
Item
Standards
Performance Level
Safety Integrity Level
IEC 61508
SIL3
IEC 62061
SILCL3
Mission Time
IEC 61508
10 years
20 years
Probability of Dangerous Failure per
Hour
IEC 61508
IEC 62061
PFH = 4.04
×
10
-9
[1/h]
(4.04% of SIL3)
PFH = 4.05
×
10
-9
[1/h]
(4.05% of SIL3)
Performance Level
EN ISO 13849-1
PLe (Category 3)
Mean Time to Dangerous Failure of
Each Channel
EN ISO 13849-1
MTTFd: High
Average Diagnostic Coverage
EN ISO 13849-1
DCavg: Medium
Stop Category
IEC 60204-1
Stop category 0
Safety Function
IEC 61800-5-2
STO
Hardware Fault Tolerance
IEC 61508
HFT = 1
Subsystem
IEC 61508
B