List Of Abbreviations - Pepperl+Fuchs SIL VIM8 Series Manual

Functional Safety Vibration Sensor VIM8*

List of Abbreviations

7 List of Abbreviations
CAT
CCF
DC/DC
avg
FIT
FMEDA

sd

su

not part

total (safety function)

dd

du
HFT
MTBF
MTTF
MTTF
D
MTTR
PFD
avg
PFH
SFF
SIL
Category according to EN ISO 13849-1:2008
Common Cause Failure
Diagnostic Coverage/Average Diagnostic Coverage
Failure In Time, 1 FIT = 1 failure / 10 h
Failure Mode, Effects, and Diagnostics Analysis
Probability of safe detected failure
Probability of safe undetected failure
Probability of failure of components that are not in the safety loop
Probability of failure of components that are in the safety loop
Probability of dangerous detected failure
Probability of dangerous undetected failure
Hardware Fault Tolerance
Mean Time Between Failures
Mean Time To Failure
Mean Time To dangerous Failure
Mean Time To Restoration
Average Probability of dangerous Failure on Demand
Average frequency of dangerous failure per hour
Safe Failure Fraction
Safety Integrity Level
19