Safety-related digital inputs, Connection of voltage supply to input device – Rockwell Automation 1753-IB20XOB8 GuardPLC Digital Input/Output Module Installation Instructions User Manual
Page 7
GuardPLC Digital Input/Output Module 7
Rockwell Automation Publication 1753-IN003C-EN-P - June 2010
Safety-related Digital Inputs
The module has 20 digital inputs (DI1…DI20) whose status is indicated via status indicators.
LS+ is a voltage source that provides 24V DC for a group of four dry contact inputs. There are
five groups on the module.
If devices require 24V DC to operate and use the same power source as the module, then wire the
outputs of the device directly to inputs on the module.
L-
L-
L+
L+
1
LS+
LS+
LS+
LS+
LS+
L-
D1
2 3 4
13 14 15 16 17 18
5
L-
D1
6 7 8
19 20 21 22 23 24
9
L-
D1
10 11 12
25 26 27 28 29 30
13
L-
D1
14 15 16
31 32 33 34 35 36
17
L-
D1
18 19 20
37 38 39 40 41 42
19 20 21 22 23 24
13 14 15 16 23 24
1
L-
L-
DO
2 3 4
(2A)
1 2 3 4 5 6
1 2 3 4 5 6
7
L-
L-
DO
8 9 10
(2A)
7 8 9 10 11 12
7 8 9 10 11 12
25 26 27 28 29 30
31 32 33 34 35 36
37 38 39 40 41 42
24V DC
RUN
24 V DC
PROG
ERROR
FAULT
FORCE
BL
OSL
GuardPLC Ethernet
10/100 BaseT
1 (—)
2
(—)
1753-IB20OXB8
20 DC Inputs
8 DC Outputs
1
LS+-
L-
D1
2 3 4
13 14 15 16 17 18
13 14 15 16 23 24
L-
L-
L+
L+
24V DC
24V DC
Power
Supply
COM
+
Connection of Voltage
Supply to Input Device
L-
L-
L+
L+
1
LS+
LS+
LS+
LS+
LS+
L-
D1
2 3 4
13 14 15 16 17 18
5
L-
D1
6 7 8
19 20 21 22 23 24
9
L-
D1
10 11 12
25 26 27 28 29 30
13
L-
D1
14 15 16
31 32 33 34 35 36
17
L-
D1
18 19 20
37 38 39 40 41 42
19 20 21 22 23 24
13 14 15 16 23 24
1
L-
L-
DO
2 3 4
(2A)
1
2
3 4
5
6
1
2
3 4
5
6
7
L-
L-
DO
8 9 10
(2A)
7
8
9 10 11 12
7
8
9 10 11 12
25 26 27 28 29 30
31 32 33 34 35 36
37 38 39 40 41 42
24V DC
RUN
24 V DC
PROG
ERROR
FAULT
FORCE
BL
OSL
GuardPLC Ethernet
10/100 BaseT
1 (—)
2
(—)
1753-IB20OXB8
20 DC Inputs
8 DC Outputs
1
LS+-
L-
D1
2 3 4
13 14 15 16 17 18
13 14 15 16 23 24
L-
L-
L+
L+
24V DC
COM
24V DC
Power
Supply
COM
+
+
Light Curtain
(or any Safety Input)
Connection of Voltage Supply
to Input Device