Appendix: Terms And Abbreviations - turck IM12-FI01-1SF-1R Safety Manual

IM12-FI01-1SF-1R
NAMUR
E1
0: 0...3 VDC PNP/
1: 5...30 VDC NPN
no line
monitoring
E2
SUD
NAMUR
only
8

Appendix: Terms and Abbreviations

DC
FIT
FMEDA
HFT
λ
AU
λ
DD
λ
DU
λ
SD
λ
SU
MTTR
PFD
avg
PFH
SFF
SIL
T1
Type A
Type B
V01.00 | 2020/04
BN
7 +
BU
8 –
BK
3
BU
2 –
BN
1 +
BN
Common
5 +
Alarm
BU
Output
6 –
NC
X1X2 X3 X4
Diagnostic Coverage
1 FIT is 1 failure per E09 hours
Failure Modes, Effects and Diagnostic Analysis
Hardware failure tolerance
Undetected Annunciation failure rate (per hour)
Annunciation failures do not directly impact safety but impact the ability to detect a future
fault (such as a fault in diagnostic circuit).
Detected dangerous failure rate (per hour)
Undetected dangerous failure rate (per hour)
Detected safe failure rate (per hour)
Undetected safe failure rate (per hour)
Mean time to restoration (hour)
Average probability of dangerous failure on demand
Probability of dangerous failure per hour
Safe Failure Fraction
Safety Integrity Level
Proof test interval (hour)
"Non-complex" element (all failure modes are well defined); for details see 7.4.4.1.2 of
IEC 61508-2
"Complex" element (using micro controllers or programmable logic); for details see 7.4.4.1.3
of IEC 61508-2
ON
1 2 3 4 5
E1
YE/RD
SUD
13 +
YE 14 –
10
A1D
11
YE/RD
12
Pwr/Err
15 +
10...30 VDC
GN/RD
16 –
X5
+ –
E3
SUD
only
0...3 VDC /
10...30 VDC
A1D
21