
Electrical connection
Leuze electronic
MSI-TRMB
33
Figure 7.11: Safety sequential device for 2-channel safety door monitoring with automatic start and non-
monitored start (restart interlock)
0V
Var. B
Var. A
+2
4
V
State
Er
ro
r
MSI-TRMB
-K1
-K2
A2
S11
S33
S34
S31 14
24
S32
13
23
-K2
-K1
-K1
-K2
A1
A2
-K1
A1
A2
-K2
1
2
1
2
S11
S12
A1
0V
+ 24V
PE
L-
L+
+ 24V
0V
PE
L+
L-
-A1
S22
S21
S1
S2