Installation Instructions User guide
12 CompactLogix 5370 L2 Controllers
Rockwell Automation Publication 1769-IN090A-EN-P - April 2012
5. Connect the wire to the +24VDC terminal on the controller.
6. Connect a wire to a -24V DC terminal on the external power supply.
7. Strip 8 mm (0.31 in.) insulation from the end of the wire that you will
connect to the COM terminal on the controller.
8. Connect the wire to the COM terminal on the controller.
IMPORTANT
If your application requires a power control device, for example, a switch or relay,
between the external power supply and the CompactLogix 5370 L2 controller’s
embedded power supply to control when the controller is powered, you must install
the power control device at the +24VDC terminal on the controller.
If you install the power control device at the COM terminal, the CompactLogix 5370
L2 controller may not power up or power down properly.
The previous section describes how to wire terminals +24VDC and COM on the
CompactLogix 5370 L2 controller. They are the only terminals you wire to power the
CompactLogix 5370 L2 control system.
You should only use the FG terminal as appropriate when connecting a field device to
the controller.
01234567
8 9 10 11 12 13 14 15
01234567
8910
A0 B0 Z0
A1 B1 Z1
0 2 FUSE
13OK
11 12 13 14 15
HIGH SPEED
COUNTER
INOUT
DC
INPUT
24VDC
SINK\
SOURCE
24VDC
SOURCE
OUTPUT
DC
+24VDC COM FG
01234567
8 9 10 11 12 13 14 15
01234567
8910
A0 B0 Z0
A1 B1 Z1
0 2 FUSE
13OK
11 12 13 14 15
HIGH SPEED
COUNTER
INOUT
DC
INPUT
24VDC
SINK\
SOURCE
24VDC
SOURCE
OUTPUT
DC
+24VDC COM FG
00
01
02
03
04
05
06
07
NC
+V
00
01
02
03
04
05
06
07
COM
0
COM
0
08
09
10
11
12
13
14
15
NC
+V
08
09
10
11
12
13
14
15
COM
1
COM
1
A0+
B0+
Z0+
A1+
B1+
Z1+
+V
OUT
1
OUT
0
COM COM
A0-
B0-
Z0-
A1-
B1-
Z1-
+V
0UT
3
V
in
0+
V
in
2+
V
OUT
0+
I
OUT
0+
V
OUT
1+
I
in
3+
V
in
1+
I
in
1+
I
in
1+
V
in
3+
CJC
-
CJC
+
V/I
in
1-
V/I
in
3-
V/I
in
0-
V/I
in
2-
I
in
0+
I
in
2+
OUT
2
COMCOM
DC IN
HSC
DC OUT
ANALOG
00:00:BC:2E:69:F6
L27ERM
QBFC1B
01234567
8 9 10 11 12 13 14 15
01234567
8910
A0 B0 Z0
A1 B1 Z1
0 2 FUSE
13OK
11 12 13 14 15
HIGH SPEED
COUNTER
INOUT
DC
INPUT
24VDC
SINK\
SOURCE
24VDC
SOURCE
OUTPUT
DC
+24VDC COM FG
01234567
8 9 10 11 12 13 14 15
01234567
8910
A0 B0 Z0
A1 B1 Z1
0 2 FUSE
13OK
11 12 13 14 15
HIGH SPEED
COUNTER
INOUT
DC
INPUT
24VDC
SINK\
SOURCE
24VDC
SOURCE
OUTPUT
DC
+24VDC COM FG
00
01
02
03
04
05
06
07
NC
+V
00
01
02
03
04
05
06
07
COM
0
COM
0
08
09
10
11
12
13
14
15
NC
+V
08
09
10
11
12
13
14
15
COM
1
COM
1
A0+
B0+
Z0+
A1+
B1+
Z1+
+V
OUT
1
OUT
0
COM COM
A0-
B0-
Z0-
A1-
B1-
Z1-
+V
0UT
3
V
in
0+
V
in
2+
V
OUT
0+
I
OUT
0+
V
OUT
1+
I
in
3+
V
in
1+
I
in
1+
I
in
1+
V
in
3+
CJC
-
CJC
+
V/I
in
1-
V/I
in
3-
V/I
in
0-
V/I
in
2-
I
in
0+
I
in
2+
OUT
2
COMCOM
DC IN
HSC
DC OUT
ANALOG
00:00:BC:2E:69:F6
L27ERM
QBFC1B