List Of Abbreviations - Pepperl+Fuchs KCD2-UT2-1 Manual

Functional Safety KCD2-UT2-(Ex)1, HiC2081

List of Abbreviations

7 List of Abbreviations
ESD
FIT
FMEDA

s

dd

du

no effect

not part

total (safety function)
HFT
MTBF
MTTR
PCS
PFD
avg
PFH
PLC
PTC
SFF
SIF
SIL
SIL (SC)
SIS
T
1
T
service
30
Emergency Shutdown
-9
Failure In Time in 10 1/h
Failure Mode, Effects, and Diagnostics Analysis
Probability of safe failure
Probability of dangerous detected failure
Probability of dangerous undetected failure
Probability of failures of components in the safety loop that have no effect on
the safety function. The no effect failure is not used for calculation of SFF.
Probability of failure of components that are not in the safety loop
Probability of failure of components that are in the safety loop
Hardware Fault Tolerance
Mean Time Between Failures
Mean Time To Restoration
Process Control System
Average Probability of dangerous Failure on Demand
Average frequency of dangerous failure
Programmable Logic Controller
Proof Test Coverage
Safe Failure Fraction
Safety Instrumented Function
Safety Integrity Level
Safety Integrity Level (Systematic Capability)
Safety Instrumented System
Proof Test Interval
Time from start of operation to putting the device out of service