YASKAWA Sigma-7-Series Product Manual page 28

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