Lenze E70AC Series Hardware Manual page 137

Safety−related parameters acc.to IEC 61508−1 to −7 and IEC 62061
Specification
Safety Integrity Level
PFH [1/h]
PFD
Proof test interval
Safety−related parameters acc. to EN ISO 13849−1
Specification
Performance Level
Category
MTTF
d
Diagnostic coverage DC
Note on safety−related parameters
Source of failure rates
Average max. ambient temperature
General assumption that 50 % of the failures of
a component are hazardous failures
EDS700ACBA EN 5.1
Value
SIL 3
7.79 E−10 0.78 % of SIL 3
6.82 E−5 6.8 % of SIL 3 after T = 20 years
20 years Mission time
Value
e
4
high
high
SN 29500
40 °C
l = 0.5 l, MTTFd = 2 MTTF
d
l
Safety engineering
Basic Safety − STO
Technical data
Comment
Comment
71285 years
99 %
As far as values from the
component manufacturers
were not available
As far as other information was
not available
10
137