Festo — CPX-F8DE-P — 2022-10d
Technical data
85
Safety characteristics
Function mode
1
2
3
4
5
6
7
8
9
10
–
in accordance with
EN 61508
SIL 2
)
up to SIL 3
–
in accordance with
EN 62061
SIL CL 2
)
up to SIL CL 3
T
WCDT
Worst Case Delay Time
(Max. internal reaction time
to input signal)
[ms]
15
15
60
120 15
60
120 580 15
15
DC
AVG
Average Diagnostic Coverage
(average diagnostic cov-
erage)
[%]
80
2)
99
SFF
Safe Failure Fraction
(safe failure fraction)
[%]
84
3)
99
Minimum period of request
>
internal reaction time
PROFIsafe watchdog time
[ms]
F_WD_TIME
Max. reaction time to input
change
[ms]
F_W T
WCDT
T
DAT
Device Acknowledge Time
(Internal PROFIsafe pro-
cessing time)
[ms]
<
20
MTTF
d
Mean Time To dangerous
Failure
(Mean time to dangerous
failure)
[years]
>
2500
PFH
D
Probability of dangerous
Failure per Hour
(probability of dangerous
failure per hour)
[1/h]
1.0 x 10
–9
HFT
Hardware Fault Tolerance
(Hardware Fault Tolerance)
1
