AB Quality GuardPLC 1800 Manuel d'instructions d'installation - Page 9

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The supply voltage is connected via a 4-pin connector which accommodates wire
sizes up to 2.5 mm
wire to L-. Both L+ and L- terminals are internally connected, so you can
daisy-chain 24V dc power from the GuardPLC to other devices in the panel using
the remaining terminal.
ATTENTION
Safety-Related Digital Inputs
The controller has 20 digital inputs whose status is indicated via LEDs 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.
24V dc
Power
Supply
Connection of Voltage Supply to
Input Device
2
(14 AWG). You only need to connect one wire to L+ and one
Do not reverse the L+ and L- terminals or damage to the controller
will result. There is no reverse polarity protection.
COM
+
3
(—)
(—)
4
L-
L-
L+ L+
24V DC
L-
L-
L+ L+
RS-485
MODBUS
PROFIBUS
24V DC
COMM1
COMM2
COMM3
GuardPLC Ethernet
10/100 BaseT
3
4
(—)
(—)
1
2
3
4
5
6
7
8
9
10 11 12
1
2
3
4
5
6
7
8
9
10
DO
L-
1
2
3 4
L-
DO
L-
5
6
7 8
(2A)
24 V DC
RUN
ERROR
PROG
FORCE
D1
FAULT
LS+-
1
2 3 4
L-
OSL
BL
D1
D1
D1
13 14 15 16 17 18
LS+-
1
2 3 4
L-
LS+
5
6 7 8
L-
LS+
9
10 11 12
13 14 15 16 17 18
19 20 21 22 23 24
25 26 27 28 29 30
13 14 15 16 23 24
13 14 15 16 23 24
19 20 21 22 23 24
25 26 27 28 29 30
Publication 1753-IN001B-EN-P - March 2004
GuardPLC™ 1600 Controllers
11 12
L-
(2A)
1753-L28BBBM
20 DC Inputs
8 DC Outputs
D1
D1
L-
LS+
13
14 15 16
L-
LS+
17
18 19 20
L-
31 32 33 34 35 36
37 38 39 40 41 42
31 32 33 34 35 36
37 38 39 40 41 42
9