Rockwell Automation Publication 5069-UM004A-EN-P - April 2019 289
Safety Data for Safety Modules Appendix D
Compact 5000 I/O Safety
Output Module Safety Data
Table 94 lists the safety data for the 5069-OBV8S and 5069-OBV8SK
modules.
Table 94 - 5069-OBV8S and 5069-OBV8SK Module Safety Data
Attribute
Output Mode
Sourcing Bipolar
Point Operation Type Point Operation Type
Single Dual Single
Safety Function Architecture 0 1 1
Safe Failure Rate (
s
) [failures/hr] 1.17E-06 9.45E-07 9.63E-07
Dangerous Failure Rate (
D
) [failures/hr] 9.13E-07 5.98E-07 6.25E-07
Dangerous Detected Failure Rate (
DD
) [failures/hr] 9.12E-07 5.97E-07 6.24E-07
Dangerous Undetected Failure Rate (
DU
) [failures/hr] 3.29E-10 3.15E-10 3.14E-10
Safety Reaction Time, SRT [millisecond] 4.5
Automatic Diagnostic Test Interval (TD) [hr] 4
Useful Life [yr] 20
Systematic Capability (SC) 3
Safe Failure Fraction (SFF) [%] 99.98% 99.98% 99.98%
PFH 3.29E-10 3.15E-10 3.14E-10
PFD
AVE
10 yrs 1.44E-05 1.38E-05 1.38E-05
Mission Time 20 yrs 2.89E-05 2.76E-05 2.75E-05
Diagnostic Coverage Average (DC
AVE
) 99.96% 99.95% 99.95%
Spurious Trip Rate (STR) 3.65E-06 2.34E-06 2.45E-06
MTTF [years] 54.91 74.01 71.89
MTTF
D
[years] 125.07 190.99 182.70
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