Safety Related Parameters - Pepperl+Fuchs 2/209 Manual

Trip Amplifier 2/209
Safety concept
9.2

Safety related parameters

9.2.1 Safety parameters for SIL2
In consultation with TÜV Rheinland, the PFH value for this device can be calculated as
EN
follows:
PFH = PFD
Configuration: 8 inputs (use in pairs for a physical value)
Device
PFH = 31.6 x 10
chain = 72.2 %)
Configuration: 4 inputs (use in pairs for a physical value)
Device
PFH = 16.67 x 10
chain = 38 %)
46
x 2 / proof test interval [h]; at 1 year test interval
avg
4 outputs
SSF
1-channel part
HFT = 0
Set  90 %
2/209 90.4 %
2/209 90.4 %
2/209 90.4 %
-4 x 2 / 8760 h = 72.2 x 10
2 outputs
SSF
1-channel part
HFT = 0
Set  90 %
2/209 90.7 %
2/209 90.7 %
2/209 90.7 %
2/209 99.5 %
-4 x 2 / 8760 h = 38 x 10
SSF Safety
2-channel part integrity
HFT = 1 level
Set  60 %
94.6 % SIL2
94.6 % SIL2
94.6 % SIL2
-8 1/h (share of the logic in the safety
SSF Safety
2-channel part integrity
HFT = 1 level
Set  60 %
93.7 % SIL2
93.7 % SIL2
93.7 % SIL2
90.4 % SIL2
-8 1/h (share of the logic in the safety
PFD Share of the
avg
logic in the
safety chain
7.9 %
7.9 x 10 -4
15.0 %
15.0 x 10 -4
31.6 %
31.6 x 10 -4
PFD Share of the
avg
logic in the
safety chain
4.0 %
4.0 x 10 -4
7.9 %
7.9 x 10 -4
15.0 %
15.0 x 10 -4
31.7 %
31.7 x 10 -4
Proof test
interval [a]
0.3
0.5
1.0
Proof test
interval [a]
0.3
0.5
0.9
2.0