4
Safety Performance Amplifier Alone
Safety Performance with Safety Module
Items 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 = 4.60 x 10
-9
[1/h]
4.60% of SIL3
PFH = 4.62 x 10
-9
[1/h]
4.62% 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
Items Standards Performance Level
Safety Integrity Level
IEC 61508 SIL2
IEC 62061 SILCL2
Probability of Dangerous
Failure per Hour
IEC 61508
IEC 62061
PFH = 3.3 x 10
-7
[1/h]
3.3% of SIL2
Performance Level
EN ISO 13849-1 PL d (Category 2)
Mean Time to Dangerous
Failure of Each Channel
EN ISO 13849-1 MTTFd: High
Average Diagnostic
Coverage
EN ISO 13849-1 DCavg: Medium
Safety Function
IEC 61800-5-2 STO/SS1/SS2/SLS
Mission Time
IEC 61508 10 Years
Hardware Fault Tolerance
IEC 61508 HFT = 1
Subsystem
IEC 61508 B