Rockwell Automation 1715-OF8I Redundant I/O System User Manual - Manual (Page 295)

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 295
PFD and PFH Calculations for a SIL 2 System Appendix E
The PFD calculations in Table 67 are calculated for a 5-year proof test interval
(43,800 hours) and are specific to1715 I/O components in ControlLogix
systems.
De-energize-to-trip 5-Year Proof Test Interval
Table 67 - 5-year PFD Calculations for 1715 I/O Components
Cat No.
6150
8 200
0
(1)
Se
rie
s
Firmware
Version (2)
Description
Simplex Configuration Duplex Configuration
PFDde PFDe PFDde PFDe
1715-AENTR x A 2.001 EtherNet adapter redundant module 5.92E-04 7.53E-04 2.19E-06 3.73E-06
1715-IB16D x A 2.001 16-channel digital input module 1.71E-05 2.57E-05 2.12E-06 2.21E-06
1715-IF16 x A 2.001 16-channel analog input module 1.71E-05 2.57E-05 2.12E-06 2.21E-06
1715-OB8DE x A 2.001 8-channel digital output module 6.64E-06 1.93E-04 1.33E-05 1.97E-06
1715-OF8I x A 2.001 8-channel analog output module 1.26E-05 7.42E-04 2.50E-05 1.70E-05
(1) Calculated MTBF and PFD by FMEA to 61508-2000.
(2) For the latest approved versions, see the Revision Release List available from the Product Certifications link at http://www.ab.com.
Table 68 - De-energize-to-trip 5-Year Proof Test Interval
MTTR 10 Hours PTI 5.0 Years Simplex Configuration Duplex Configuration
Ca
t No
.
Ser
ies
Fi
rm
w
are
Ve
rs
io
n
Descrip
tion
MT
BF
λs λd
u
λd
d
SFF tc
e'
HF
T
PFH
de
PFDde ST
R
β βd tc
e'
tg
e'
HF
T
PFH
de
PFDde Ar
ch
ST
R
1715-
AENTR
A 2.001 EtherNet
adapter
dual
module 841
,973
8.43E
-07
9.82E
-09
3.34E
-07
97.74
%
N/A N/A N/A N/A N/A 1.0% 1.0% 5.30E
+02
3.57E
+02
1 3.47E
-09
2.19E
-06
1oo2D 8.43E
-08
1715-
IB16D
A 2.001 16-
channel
digital
input
module 3,53
5,79
1
2.06
E-
07
6.57
E-
10
7.60
E-
08
99
.77%
1.98
E+
02
0 7.48
E-
10
1.71
E-
05
2.82
E-
07
1.0% 0.5% 6.13
E+
01
4.42
E+
01
1 4.77
E-
10
2.12
E-
06
1oo2D 2.06
E-
09
1715-
IF16
A 2.001 16-
channel
analog
input
module 3,53
5,791
2.06
E-07
6.57
E-10
7.60
E-08
99
.77%
1.98
E+0
2
0 7.48
E-10
1.71
E-05
2.82
E-07
1.0% 0.5% 6.13
E+0
1
4.42
E+0
1
1 4.77
E-10
2.12
E-06
1oo2
D
2.06
E-09
1715-
OB8DE
A 2.001 16-
channel
digital
output
module 9,677
,085
7.94E
-08
2.96E
-10
2.36E
-08
99.26
%
2.81E
+02
1 7.68E
-10
6.64E
-06
1.03E
-07
1.0% 1.0% N/A N/A 1 1.54E
-09
1.33E
-05
2oo2 7.94E
-10
1715-
OF8I
A 2.001 16-
channel
analog
output
module 5,4
46,17
9
1.34
E-
07
5.50
E-
10
4.96
E-
08
99
.51%
2.50
E+
02
1 9.13
E-
10
1.26
E-
05
1.83
E-
07
1.0% 0.5% N/A N/A 1 1.82
E-
09
2.50
E-
05
2oo2 1.34
E-
09