catalogue search
P. 01
P. 02
P. 03
P. 04
P. 05
P. 06
P. 07
P. 08
P. 09
P. 10
P. 11
P. 12
P. 13
P. 14
P. 15
P. 16
P. 17
P. 18
P. 19
P. 20
P. 21
P. 22
P. 23
P. 24
P. 25
P. 26
P. 27
P. 28
P. 29
P. 30
P. 31
P. 32
P. 33
P. 34
P. 35
P. 36
P. 37
P. 38
P. 39
P. 40
P. 41
P. 42
P. 43
P. 44
P. 45
P. 46
P. 47
P. 48
P. 49
P. 50
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
You may also be interested in
Safety relay, High frequency relay, Relay, Dual relay, Monitoring relay
Text version of the page
application guide safety relays from riese electronic page 15
3.2.2 Relationship between PL and SIL:
-6
Probability of dangerous failures per hour
PL
a
PL
b
PL
c
PL
d
PL
e
10 -4 10 -5 10 -6 10 -7 10 -8
PL according to
ISO 13849-1
SIL according to
IEC 62021
low risk high risk
9000 900 90 9 0.9
no special
safety
requirements SIL 1 SIL 2 SIL 3
Dangerous failures per year and 10 000 systems
3 *10
3.2.3 Relationship between the categories, DC, MTTFd and PL: