Datasheet

PSR-PC40
106256_en_00 PHOENIX CONTACT 13
14 Application examples
Key:
Applications with the PSR-PC40
14.1 Application example 1 - SIL3
– Low-demand application
– Single-channel control
– Automatic activation
Figure 11 Application example 1 - SIL3
SIS = Safety Instrumented System (safe control)
DC = Diagnostic Coverage according to IEC61508
(line/load diagnostics at DO)
DI = Digital input
DO = Digital output
A fault e.g.,open circuit or short circuit of the
load is reported by detuning the test pulse of
the safe controller.
K1
K2
M
M
(N)
K1
K2
DO DO DI
SIS
DC 90%
K1
K2
L L
A1'
A2
13
14
PSR-PC40
( )
M1
Y2
( )
Y1
( )
+
23
24
A1
Data for the application example as 1001 structure
Equipment type A
HFT 0
SIL 3
SFF 99.71 %

SD
0 FIT

SU
1798 FIT

DD
0 FIT

DU
5.236 FIT

Total
1803 FIT
MTBF 54 years
PFD
avg
2.29x10
-05
(for T1=1year)