Keba Kemro KeTop T10, Руководство по проектированию устройства

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1.6.3 Relationship between Performance Level and Safety Integrity Level
When evaluating safety functions by IEC EN 62601 the PL can be transformed
into SIL by following the equivalence table of EN ISO 13849-1.
Table 4 (EN ISO 13849-1) - Correlation of Performance Level (PL) and Safety
Integrity Level(SIL)
Performance Level (PL) by
EN ISO 13849-1
Safety Integrity Level (SIL) by
IEC 61508-1
a no corresponding value
b 1
c 1
d 2
e 3
Table 3 (EN ISO 13849-1) - Performance Level (PL)
Performance Level (PL)
Average probability of a dangerous
breakdown per hour 1/h
a
≥ 10 -5
to < 10
-4
b
≥
3 x 10
-6
to < 10
-5
c
≥ 10 -6
to < 3 x 10
-6
d
≥ 10
-7
to < 10
-6
e
≥ 10 -8
to < 10
-7
1.6.4 Abbreviations
Abbreviation Term Meaning
B
10d
-
Number of cycles until 10% of the
components fail dangerously (per
channel)
MTTF
d
Mean Time to Dangerous Failure
Mean time to dangerous failure (per
channel)
DC Diagnostic Coverage Diagnostic coverage
PL Performance Level
Discrete level that specifies the ca-
pacity of safety devices to execute a
safety function under foreseeable
conditions.
PFH Probability of Failure per Hour Probability of failure per hour
SIL Safety Integrity Level Safety integrity level
KeTop T10 Introduction
© KEBA 2014
Project engineering manual V1.02 13