Safety Data For Some Typical Configurations - ABB FSO-21 User Manual

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Safety data for some typical configurations

The table below shows FSO-21 safety data for some safety functions with typical
combinations of the FSO module subsystems. See section
page 433 for more information on the subsystems.
Values without the FSE-31 module
Subsystems used
in the safety
function
Prevention of unexpected start-up / Emergency stop, with a safe output (eg, releasing a mechanical
brake)
1-channel pulsed DI
Logic 2
STO-output 3.7E-09
1-channel pulsed
output
1-channel non-
pulsed DI Logic 1
STO-output 7.6E-08
1-channel non-
pulsed output
2-channel pulsed DI
Logic 2
STO-output 7.7E-11
2-channel pulsed
output
2-channel non-
pulsed DI
Logic 2
7.8E-11
STO-output
2-channel non-
pulsed output
SLS, with a safe status output
Speed measurement
1-channel pulsed DI
Logic 2
1.0E-08
STO-output
1-channel pulsed
output
Speed measurement
1-channel non-
pulsed DI
Logic 1 8.2E-08
STO-output
1-channel non-
pulsed output
Speed measurement
2-channel pulsed DI
Logic 2
6.7E-09
STO-output
2-channel pulsed
output
Speed measurement
2-channel non-
pulsed DI
Logic 2 6.7E-09
STO-output
2-channel non-
pulsed output
PFH PFD
avg
(1/h) (T1 =2 a) (T1 =5 a)
3.6E-05
6.8E-04
8.5E-07
8.6E-07
8.5E-05
7.3E-04
5.0E-05
5.0E-05
PFD SFF HFT
avg
(%)
8.4E-05 99.29 0
1.7E-03 92.26 0
1.9E-06 99.60 1
1.9E-06 99.59 1
2.0E-04 99.03 0
1.8E-03 98.39 0
1.2E-04 99.05 1
1.2E-04 99.05 1
Technical data 435
Basic safety data
SIL MTTF DC
D
SILCL
(a) (%)
3 622.47 96.33
1 613.68 57.97
3 613.68 97.93
3 613.68 97.90
3 143.67 98.38
1 143.20 89.71
3 143.20 98.75
3 143.20 98.74
3AXD10000006135.xlsm G
on
Cat. PL
2 d
1 c
3 e
3 e
2 d
1 c
3 e
3 e