Safety-related digital inputs, Connection of voltage supply to input device – Rockwell Automation 1753-L28BBB-M_P GuardPLC 1600 Controllers User Manual
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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Safety-related Digital Inputs
The controller has 20 digital inputs whose status is indicated via status indicators when the
controller is in RUN mode.
LS+ is a voltage source that provides 24V DC for a group of four dry contact inputs. There are
five groups on the GuardPLC 1600 controller.
If devices require 24V DC to operate and use the same power source as the controller, then wire
the outputs of the device directly to inputs on the controller.
1
2
3
4
5
6
1
2
3
4
1
L-
L-
L-
L+
L+
L-
DO
2
(2A)
3 4
1
LS+-
LS+
LS+
LS+
LS+
L-
D1
2 3 4
5
6
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
25
26 27 28 29 30
31
32 33 34 35 36
37
38 39 40 41 42
7
8
9
10 11 12
7
8
9
10
5
L-
L-
DO
6
(2A)
7 8
11 12
COMM1
MODBUS
RS-485
24V DC
COMM2
COMM3
RUN
24 V DC
GuardPLC Ethernet
10/100 BaseT
PROG
ERROR
FAULT
FORCE
BL
OSL
PROFIBUS
3
(—)
4
(—)
3
(—)
4
(—)
1753-L28BBBM
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
1
2
3
4
5
6
1
2
3
4
1
L-
L-
L-
L+
L+
L-
DO
2
(2A)
3 4
1
LS+-
LS+
LS+
LS+
LS+
L-
D1
2 3 4
5
6
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
25
26 27 28 29 30
31
32 33 34 35 36
37
38 39 40 41 42
7
8
9
10 11 12
7
8
9
10
5
L-
L-
DO
6
(2A)
7 8
11 12
COMM1
MODBUS
RS-485
24V DC
COMM2
COMM3
RUN
24 V DC
GuardPLC Ethernet
10/100 BaseT
PROG
ERROR
FAULT
FORCE
BL
OSL
PROFIBUS
3
(—)
4
(—)
3
(—)
4
(—)
1753-L28BBBM
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