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300 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014
Appendix E PFD and PFH Calculations for a SIL 2 System
Energize-to-action 2-year Proof Test Interval
Table 73 - Energize-to-action 2-year Proof Test Interval
MTTR 24 Hours PTI 2.0 Years Simplex Configuration Duplex Configuration
Cat No. Series Firmware Version Description MTBF λs λdu λdd SFF tce' HFT PFHe PFDe STR β βd tce' tge' HFT PFHe PFDe Arch STR
1715-
AENTR
A 2.001 EtherNet
adapter
dual
module
841,973 7.07E-07 1.67E-08 4.89E-07 93.55% N/A N/A N/A N/A N/A 1.0% 1.0% 2.94E+02 2.04E+02 1 5.08E-09 1.59E-06 1oo2D 7.07E-08
1715-
IB16D
A 2.001 16-
channel
digital
input
module
3,535,791 1.88E-07 1.02E-09 1.44E-07 99.30% 8.54E+01 0 1.11E-09 1.32E-05 3.33E-07 1.0% 0.5% 5.09E+01 4.19E+01 1 8.22E-10 8.99E-07 1oo2D 1.88E-09
1715-
IF16
A 2.001 16-
channel
analog
input
module
3,535,791 1.88E-07 1.02E-09 1.44E-07 99.30% 8.54E+01 0 1.11E-09 1.32E-05 3.33E-07 1.0% 0.5% 5.09E+01 4.19E+01 1 8.22E-10 8.99E-07 1oo2D 1.88E-09
1715-
OB8DE
A 2.001 16-
channel
digital
output
module
9,677,085 1.22E-07 8.63E-09 3.53E-07 97.61% 2.33E+02 0 8.63E-09 8.42E-05 4.74E-07 1.0% 1.0% 2.33E+02 1.63E+02 1 3.67E-09 8.52E-07 1oo2 1.22E-09
1715-
OF8I
A 2.001 16-
channel
analog
output
module
5,446,179 3.56E-07 3.32E-08 4.71E-07 93.42% 6.01E+02 0 3.36E-08 3.08E-04 8.27E-07 1.0% 0.5% 6.01E+02 4.09E+02 1 3.38E-09 7.48E-06 1oo2 3.56E-09