Technical data
Leuze electronic
MSI-SR5B
31
13
Technical data
Table 13.1:
Safety-relevant technical data
Table 13.2:
General system data
Type acc. to EN 61496-1:2008
Type 4
Performance Level (PL) in accordance
with EN ISO 13849-1
PL e
SIL in accordance with EN 61508
SIL 3
Category in accordance with
EN ISO 13849-1
Category 4
Stop category
Stop 0
Mean probability of a dangerous failure
per hour (PFH
D
) as a function of the
mean number of annual switching
cycles of the relay n
op
*
100%
60%
100%
60%
100%
60%
Load
Load
Load
Load
Load
Load
n
op
= 4,800:
n
op
= 4,800:
n
op
= 28,800:
n
op
= 8,800:
n
op
= 86,400:
n
op
= 86,400:
1 x 10
-08
1/h
1 x 10
-08
1/h
2 x 10
-08
1/h
1 x 10
-08
1/h
5 x 10
-08
1/h
2 x 10
-08
1/h
Number of cycles until 10% of the com
-
ponents have a failure to danger (B10
d
)
400,000:
2,500,000:
100% of the max. switched current of load
-
ing cases AC1 … DC13
60% of the max. switched current of loading
cases AC1 … DC13
Mean time to dangerous failure (MTTF
d
) 73 years
Service life (T
m
)
20 years
*n
op
= mean number of annual actuations, see C.4.2 and C.4.3 of EN ISO 13849-1
Use the following formula to calculate the mean number of annual actuations:
n
op
= (d
op
h
op
3600 s/h) ÷ t
cycle
In doing so, make the following assumptions with regard to the use of the component:
h
op
= mean operating time in hours per day
d
op
= mean operating time in days per year
t
cycle
= mean time between the start of two successive cycles of the component (e.g switching of a valve)
in seconds per cycle
Connectable safety sensors
(+S11, +S12, -S12)
(+S21, +S22, -S22)
Up to two type 4, type 3 or type 2 AOPDs, self-test
-
ing, (each acc. to EN 61496-1)
Connectable safety switches (except for solenoid
switches) and E-Stop command devices
(+S11, -S12)
(+S21, -S22)
Safety switches acc. to EN 1088
E-Stop buttons acc. to EN ISO 13850
Available functions
Start/restart interlock
Contactor monitoring (EDM)
Control input RES-I
Start/restart interlock (reset)
Potential-free NO contact (RES-button or key
switch)
Control input RES-I
Contactor monitoring (EDM)
Feedback of positive-guided contacts of sequential
contactors (see connection diagram)
Operating voltage U
B
24 V DC
20 % (PELV)
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