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Follow the closed-circuit principle for external wiring when connecting sensors. To
create a safe state in the event of a fault, the input signals revert to the de-energized
state (0). The "FAULT" LED activates.
TIP
Digital Input Terminals
DI
LS+-
1
2 3 4
L-
13 14 15 16 17 18
13 14 15 16 17 18
Terminals accommodate wires up to 1.5 mm
connected to the following terminals:
Terminal Number
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
For more information on input wiring, see the GuardPLC™
System User Manual, publication number 1753-UM001.
DI
DI
LS+
5
6 7 8
L-
LS+
19 20 21 22 23 24
25 26 27 28 29 30
19 20 21 22 23 24
25 26 27 28 29 30
Designation
LS+
1
2
3
4
L-
LS+
5
6
7
8
L-
LS+
9
10
11
12
L-
GuardPLC™ 1600 Controllers
DI
9
10 11 12
L-
LS+
13
14 15 16
31 32 33 34 35 36
31 32 33 34 35 36
2
(16 AWG). Digital inputs are
Function
Sensor supply for inputs 1 to 4
Digital input 1
Digital input 2
Digital input 3
Digital input 4
Reference pole
Sensor supply for inputs 5 to 8
Digital input 5
Digital input 6
Digital input 7
Digital input 8
Reference pole
Sensor supply for inputs 9 to 12
Digital input 9
Digital input 10
Digital input 11
Digital input 12
Reference pole
Publication 1753-IN001B-EN-P - March 2004
DI
L-
LS+
17
18 19 20
L-
37 38 39 40 41 42
37 38 39 40 41 42
11
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