Electrical connection
Leuze electronic
MC3x
32
The following wiring diagram shows the connection of an MC3xS1x for achieving safety category 4 and
Performance Level e. For access safeguarding, it also includes the “start/restart interlock” operating mode
and a reset button.
Figure 7.9: Example 1: Two-channel connection of an MC3xS1x with start/restart interlock and contactor
monitoring (EDM), contact drawing without activation by actuator
The following wiring diagram shows the connection of two MC3xS1x for achieving safety category 3 and
Performance Level e or d. If the guard cannot be reached or stepped around the “Automatic start/restart”
operating mode is permissible for the benefit of an efficient system design.
Figure 7.10: Example 2: Connection of two MC3xS1x with automatic start/restart interlock and contactor
monitoring (EDM), contact drawing without activation by actuator
The following wiring diagram shows the connection of four MC3xS1x on two doors for achieving safety
category 3 and Performance Level e or d.
0V
MSI-MC310
S11
S12
S22
OUT
S34
A2
S33
+24V
A1
A
SR
MC3xS1x
K3
K4
0V
MSI-MC310
S11
S12
S22
OUT
S34
A2
S33
+24V
A1
A
SR
MC3xS1x
K3
K4
MC3xS1x
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