Installation manual
Page 27 of27
8.4
Safety-related characteristic data
8.4.1 Single-channel use of the relay output according to 5.1.2
Max. achievable safety class
SIL 2 acc. to EN61508
Performance level d according to EN
ISO 13849-1
System structure
1-channel with diagnose (1001)
Category 2 acc. to EN13849-1
Rating of operating mode
“high demand” acc. to EN 61508 (high demand
rate)
Probability of an endangering failure
per hour (PFH-value)
< 2.6 E-8 (26 FIT) /
per single-channel output used
Proof test interval (EN61508)
20 years; after this time, the module must be
replaced
8.4.2 Dual-channel use of the relay output according to 5.1.3
Max. achievable safety class
SIL 3 acc. to EN61508
Performance level e acc. to EN ISO
13849-1
System structure
2-channel with diagnose (1002)
Category 4 acc. to EN13849-1
Rating of operating mode
“high demand” acc. to EN 61508 (high demand
rate)
Probability of an endangering failure
per hour (PFH value)
< 2.46 E-9 (2.5 FIT) /
per dual-channel output used
Proof test interval (EN61508)
20 years; after this time, the module must be
replaced