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Rockwell Automation Publication 2080-UM002N-EN-E - November 2022
Chapter 4 Wire Your Controller
2080-LC30-48QVB, 2080-LC30-48QBB, 2080-LC50-48QVB, 2080-LC50-48QBB, 2080-L50E-48QVB,
2080-L50E-48QBB
Controller I/O Wiring
This section contains some relevant information about minimizing electrical noise and also
includes some wiring examples.
Minimize Electrical Noise
Because of the variety of applications and environments where controllers are installed and
operating, it is impossible to ensure that all environmental noise will be removed by input
filters. To help reduce the effects of environmental noise, install the Micro800 system in a
properly rated (for example, NEMA) enclosure. Make sure that the Micro800 system is properly
grounded.
A system may malfunction due to a change in the operating environment after a period of
time. We recommend periodically checking system operation, particularly when new
machinery or other noise sources are installed near the Micro800 system.
Analog Channel Wiring Guidelines
Consider the following when wiring your analog channels:
• The analog common (COM) is not electrically isolated from the system, and is connected
to the power supply common.
• Analog channels are not isolated from each other.
• Use Belden cable #8761, or equivalent, shielded wire.
• Under normal conditions, the drain wire (shield) should be connected to the metal
mounting panel (earth ground). Keep the shield connection to earth ground as short as
possible.
• To ensure optimum accuracy for voltage type inputs, limit overall cable impedance by
keeping all analog cables as short as possible. Locate the
I/O system as close to your voltage type sensors or actuators as possible.
Minimize Electrical Noise on Analog Channels
Inputs on analog channels employ digital high-frequency filters that significantly reduce the
effects of electrical noise on input signals. However, because of the variety of applications
and environments where analog controllers are installed and operated, it is impossible to
ensure that all environmental noise will be removed by the input filters.
I-00
COM0
I-01
I-02
I-03
I-04
I-05
COM1
I-07
I-06
I-09
I-08
1
2
3
4
5
6
7
8
9
10
11
12
I-13
I-15
I-16
I-14
I-17
I-18
I-19
COM3
I-21
I-20
I-23
I-22
1
2
3
4
5
6
7
8
9
10
11
12
I-11
I-10
I-12
COM2
13
14
15
16
I-25
I-24
I-27
I-26
13
14
15
16
-DC24
+DC24
+CM0
O-00
O-01
O-02
O-03
-CM0
O-04
+CM1
O-06
O-05
1
2
3
4
5
6
7
8
9
10
11
12
+CM2
O-11
O-12
O-10
O-13
O-14
O-15
-CM2
O-16
+CM3
O-18
O-17
1
2
3
4
5
6
7
8
9
10
11
12
O-08
O-07
-CM1
O-09
13
14
15
16
-CM3
O-19
NC
NC
13
14
15
16
TERMINAL BLOCK 1
TERMINAL BLOCK 3
TERMINAL BLOCK 2
TERMINAL BLOCK 4
Input terminal blocks
Output terminal blocks