Circuit examples
Application Guide TwinSAFE 45
2.7.3.3 Calculation for block 1
Calculation of the PFH and MTTF
d
values from the B10
d
values:
From:
and:
Inserting the values, this produces:
S1:
S2:
K1/K2:
and the assumption that S1, S2, K1 and K2 are in each case single-channel:
results in a
S1:
S2:
K1/K2:
actuation 1x per shift and direct feedback
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