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2018/02
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PN-L1
-FDIO1-2IOL- S
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12 Glossary of terms
DC
Diagnostic Coverage
H
HFT
The HFT (Hardware fault tolerance) defines the fault tolerance of a subsystem. The fault tolerance is the capability
of a subsystem to perform a desired function even after an error has occurred.
M
MTTFd
Mean Time To Dangerous Failure
P
PFH
DIN IEC 61508-4:2010, Functional safety of electrical/electronic/programmable electronic safety-related systems
- Part 4:
"Average frequency of a dangerous failure per hour: Average frequency of a dangerous failure of an E/E/PE safety-
related system, to be able to perform the specified safety function over a given period of time."
PL
A measure of the dependability of the safety function,
according to EN ISO13849-1:2008: Safety-related parts of control systems:
Discrete level used to specify the ability of safety-related parts of control systems to perform a safety function
under foreseeable conditions.
S
SIL
Safety Integrity Level
DIN IEC 61508-4:2010, Functional safety of electrical/electronic/programmable electronic safety-related systems
- Part 4:
"Discrete level (one out of a possible four), corresponding to a range of safety integrity values, where safety integ-
rity level 4 has the highest level of safety integrity and safety integrity level 1 he lowest."
SIL CL
SIL Claim Limit
Maximum SIL for a subsystem The subsystem is a system with a defined systematic safety integrity.
Содержание TBIP-L...-FDIO1-2IOL Series TBIP-L4-FDIO1-2IOL
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