Electrical connection
Leuze electronic
MSI-SR5B
21
Figure 7.3: One type 4 AOPD with two safety-relevant transistor outputs, manual restart (RES), central
wiring
The following circuit shows the connection of an AOPD with safety-related relay output contacts in a
danger zone guarding system with contactor monitoring (EDM) in the button circuit. With this circuit, a reset
button can deactivate the start/restart interlock.
Figure 7.4: Two type 4 AOPDs, each with two normally open contacts, manual restart (RES) and con
-
tactor monitoring (EDM), separate supply lines to the AOPDs required, local wiring
The following circuit shows the connection of two safety switches for safeguarding flaps with no possibility
for walking or reaching behind. The automatic start/restart must be suitable for safety-related applications.
0V
MSI-SR5
7
21
13
15
23
6
8
+24V
5
16
22
24
AOPD, Type 4
+24V
14
(+U
b
)
(+S12)
(+S11)
(-S12)
(+S22)
(+S21)
(-S22)
(IV-O)
(RES-I)
(RES-O)
(0V-O)
(0V)
0V
MSI-SR5
7
21
13
15
23
6
8
+24V
5
16
22
24
14
AOPD, Type 4
AOPD, Type 4
+24V
+24V
(+U
b
)
(+S12)
(+S11)
(-S12)
(+S22)
(+S21)
(-S22)
(IV-O)
(RES-I)
(RES-O)
(0V-O)
(0V)
K3
K4
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