Characteristic Safety Values - Pepperl+Fuchs KCD2-SR-1.LB Safety Manual

Safety Manual SIL KCD2-SR-(Ex)*(.LB)(.SP), HiC282*
Planning
Note!
The failure outputs are not safety relevant.
Reaction Time
The reaction time for all safety functions is < 20 ms.
2.4

Characteristic Safety Values

Parameters acc. to IEC 61508
Assessment type and
documentation
Device type
Mode of operation
HFT
SIL
Safety function

s

dd

du

no effect

total (safety function)

not part
SFF
1
MTBF
PFH
PFD for T = 1 year
avg proof
PFD for T = 2 years
avg proof
PFD for T = 5 years
avg proof
2
Reaction time
1
acc. to SN29500. This value includes failures which are not part of the safety function.
2
Time between fault detection and fault reaction.
Table 2.3
The characteristic safety values like PFD, SFF, HFT and T
SIL report/FMEDA report. Please note, PFD and T
The function of the devices has to be checked within the proof test interval
(T ).
proof
Values
Full assessment
A
Low Demand Mode or High Demand Mode
0
2
One relay output of one channel
189 FIT
18 FIT
47 FIT
89 FIT
254 FIT
58 FIT
81.55 %
365 years
-8
4.68 x 10 1/h
-4
2.05 x 10
-4
4.10 x 10
-3
1.02 x 10
< 20 ms
Two relay outputs of a one
channel device in series
216 FIT
48 FIT
45 FIT
90 FIT
309 FIT
58 FIT
85.4 %
311 years
-8
4.51 x 10 1/h
-4
1.97 x 10
-4
3.95 x 10
-4
9.86 x 10
are taken from the
proof
are related to each other.
proof
9