Siemens SINAMICS DCM - Result Respond When Using Two Power Contactors; Result When Using Two 3 WL Circuit Breakers

Evaluation of the safety function according to EN 62061
11.4 Result when using two 3WL circuit breakers
Application document for functional safety STO, SS1 (ISO 13849-1)
68 Compact User Manual, 09/2016, A5E34871844AM
11.3.3
Result "Respond" when using two power contactors
Result
Reason
SILCL
SIL claim limit
3
The tables with the values to be determined are listed in
Section 11.3.1.2.
PFH
D
Average probability of a dangerous
failure per hour
3.24 E-10
11.4
Result when using two 3WL circuit breakers
SILCL
PFH
D
DETECT
3
8.33 E-10
EVALUATE
3
5.42 E-09
RESPOND
2
3.21 E-08
Result
Reason
SILCL
SIL claim limit
2 The SILCL of all tasks of the supplementary safety function
is at least 2.
PFH
D
Average probability of a dangerous
failure per hour
3.84 E-08