29
SIL Safety Manual
Load > 700 Ω (e.g., operation as repeater power supply)
Characteristic
Value
Explanation
λtotal
103.2 FIT1)
Total failure rate
λS
94.2 FIT
Rate of safe failures
λD
9 FIT
Rate of dangerous failures
λDU
9 FIT
Rate of dangerous undetected failures
λSD
0 FIT
Rate of safe detected failures
λDD
0 FIT
Rate of dangerous detected failures
SFF
91.3 %
Fraction of non-hazardous failures
DC
0 % (no diagnostics)2)
MTTFD
221 years3)
Mean operating time until dangerous failure
CAT
1 (1oo1) or 3 (1oo2)
Category according to EN 13849-1
PL
c (1oo1) or e (1oo2)
Performance level according to EN 13849-1
SIL
3
Safety integrity level according to EN 61508
MTTR
72 h max. time to repair
Replacing a defective device by a replace-
ment device of the same model
Temperature
Max. 40 °C
Long-time average temperature
PFH/PFD Values
T1=1 a
T1=2 a
T1=3 a
PFD1oo1
4 x 10-5
(4 %)
7.9 x 10-5
(7.9 %)
1.2 x 10-4
(11.9 %)
PFH1oo1
(1/h)
9 x 10-9
(9 %)
9 x 10-9
(9 %)
9 x 10-9
(9 %)
PFD1oo2
4 x 10-7
(0.4 %)
7.9 x 10-6
(0.79 %)
1.2 x 10-6
(1.2 %)
PFH1oo2
(1/h)
9 x 10-10
(0.9 %)
9 x 10-10
(0.9 %)
9 x 10-10
(0.9 %)
T1 = Time interval between the functional tests of the safety function
% values in brackets = proportion of maximally permitted PFD or PFH value for SIL 3.
1)
FIT = failure per 10
9
hours
2)
Diagnostic coverage: DC = λDD/(λDU +
λDD)
3)
Worst-case calculation for high or continuous demand rate. After 8 to 12 years, the failure
rates of the electronic components will increase, whereby the derived PFD and PFH values
will deteriorate (IEC 61508-2, Edition 2.0, 7.4.9.5, note 3).
Summary of Contents for ProLine P224 P1 Series
Page 10: ...10 114 5 mm 111 5 mm 12 5 mm 112 5 mm 99 0 mm Maßzeichnung ...
Page 24: ...24 114 5 mm 111 5 mm 12 5 mm 112 5 mm 99 0 mm Dimension Drawing ...
Page 38: ...38 Dessin coté 114 5 mm 111 5 mm 12 5 mm 112 5 mm 99 0 mm ...
Page 52: ...52 114 5 mm 111 5 mm 12 5 mm 112 5 mm 99 0 mm Desenho Dimensional ...
Page 59: ...EX ...
