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

Evaluating the safety functions according to EN ISO 13849 when using two switching devices
10.4 Result when using two 3WL circuit breakers
Application document for functional safety STO, SS1 (ISO 13849-1)
60 Compact User Manual, 09/2016, A5E34871844AM
10.3.2
Result of "Respond" with two 3WL circuit breakers
Result
Reason
PL
d The tables with the values to be determined are listed in
Section 10.3.1.1.
PFH
D
Average probability of a dangerous
failure per hour
1.01 E-07
10.3.3
Result of "Respond" with two power contactors
Result
Reason
PL
d The tables with the values to be determined are listed in
Section 10.3.1.2.
PFH
D
Average probability of a dangerous
failure per hour
9.06E-10
10.4
Result when using two 3WL circuit breakers
PL
Average probability of a dangerous failure per hour
DETECT
e
9.06 E-10
EVALUATE
e
5.42 E-09
RESPOND
d
1.01 E-07
Result
Reason
PL d
The PL of all tasks of the supplementary safety function is at
least d.
Average probability of a dangerous
failure per hour
1.07 E-07