Electrical connection
Leuze electronic GmbH + Co. KG
MSI-SR5B
20
7.3
Circuit diagram examples
The following examples show possible connection combinations for AOPDs (relay, transistor), safety
switches and E-Stop command devices on the safety relay.
The following circuit shows the connection of two AOPDs with integrated muting function in a double-
muting application, whereby the muting sensors are locally coupled to the AOPDs to reduce wiring.
Figure 7.1: Two type 4 AOPDs each with two safety-relevant transistor outputs, manual restart (RES)
and contactor monitoring (EDM, K3 and K4)
The following circuit shows the connection of an AOPD in a point of operation guarding system. An E-Stop
button is provided in this circuit.
Figure 7.2: One type 4 AOPD with two safety-relevant transistor outputs, two-channel E-Stop button,
RES and contactor monitoring (EDM, K3 and K4)
NOTE
All available safety inputs must be occupied! Bridges are to connect the remaining sensor inputs
where no components are connected (see table 7.2).
0V
MSI-SR5
7
21
13
15
23
6
8
+24V
5
16
22
24
AOPD, Type 4
+24V
14
AOPD, Type 4
+24V
K3
K4
(+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
+24V
AOPD, Type 4
+24V
14
(+U
b
)
(+S12)
(+S11)
(-S12)
(+S22)
(+S21)
(-S22)
(IV-O)
(RES-I)
(RES-O)
(0V-O)
(0V)
K3
K4
