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
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