AUMA SQ 05.2-SQ 14.2 Manual page 40

Safety-related figures
40
Table 20: SQEx. 2 series with ACExC 01.2 controls in SIL version, with heating
system
SQEx 14.2 / SQREx 14
Switchgear version: Thyristors with tripping contactor
Safety function
λ
S
1)
λ
DD
λ
DU
SFF
DC
PFD T = 1 Jahr (1001)
avg Proof
PFD T = 1 Jahr (1002)
avg Proof
SIL capability
1) including detected "annunciation" failures (λ
SQ 05.2 SQ 14.2/SQR 05.2
Safe ESD
176 FIT
1008 FIT
277 FIT
81 %
78 %
3
2,76 x 10
4
2,64 x 10
SIL 2 (HFT = 0)
SIL 3 (HFT = 1)
) (failures in diagnostic function)
AD
Part-turn actuators
SQR 14.2
Safe STOP
705 FIT
181 FIT
258 FIT
77 %
41 %
3
2,18 x 10
4
2,23 x 10
SIL 2 (HFT = 0)
SIL 3 (HFT = 1)