Instruction Manual

8 GuardPLC 1800 Controllers
Rockwell Automation Publication 1753-IN002C-EN-P - June 2010
The safe state of an input is indicated by a 0 signal being passed to the user program logic. If the
test routines detect a fault in the digital inputs, a 0 signal is processed in the user program for the
defective channel. When a fault occurs, the inputs are switched off (0).
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
status indicator activates.
Digital Input Terminals
Terminals accommodate wires up to 1.5 mm
2
(16 AWG). See the terminal torque specifications
on page 21. Digital inputs are connected to these terminals.
Terminal Number Designation Function
11 LS+ Sensor supply for inputs 1…8
12 1 Digital input 1
13 2 Digital input 2
14 3 Digital input 3
15 4 Digital input 4
16 5 Digital input 5
17 6 Digital input 6
18 7 Digital input 7
19 8 Digital input 8
20 L- Reference pole
21 LS+ Sensor supply for inputs 9…16
22 9 Digital input 9
23 10 Digital input 10
24 11 Digital input 11
25 12 Digital input 12
26 13 Digital input 13
27 14 Digital input 14
28 15 Digital input 15
29 16 Digital input 16
30 L- Reference pole
2017 18 19
11 12 13 14 15 16
11 12 13 14
1LS+L-DI 2 3 4 5 6 7 8
15 16
17 18 19 20
3027 28 29
21 22 23 24 25 26
21 22 23 24
1LS+L-DI 2345678
25 26
27 28 29 30
4037 38 39
31 32 33 34 35 36
31 32 33 34
1LS+L-DI 2345678
35 36
37 38 39 40