Sinking and sourcing wiring diagrams, Sinking and sourcing wiring diagrams -12 – Rockwell Automation 1762-Lxxxx MicroLogix 1200 Programmable Controllers User Manual
Page 46
Publication 1762-UM001G-EN-P - March 2011
3-12 Wire Your Controller
Sinking and Sourcing
Wiring Diagrams
Any of the MicroLogix 1200 DC embedded input groups can be configured as
sinking or sourcing depending on how the DC COM is wired on the group.
Refer to pages 3-13 through 3-17 for sinking and sourcing wiring diagrams.
1762-L24AWA, 1762-L24BWA, 1762-L24BXB, 1762-L24AWAR,
1762-L24BWAR and 1762-L24BXBR Wiring Diagrams
Figure 3.7 1762-L24AWA and 1762-L24AWAR Input Wiring Diagram
(1)
(1) “NC” terminals are not intended for use as connection points.
Type
Definition
Sinking Input
The input energizes when high-level voltage is applied to the input
terminal (active high). Connect the power supply VDC (-) to the input
group’s COM terminal.
Sourcing Input
The input energizes when low-level voltage is applied to the input
terminal (active low). Connect the power supply VDC (+) to the input
group’s COM terminal.
ATTENTION
The 24V dc sensor power source must not be used to
power output circuits. It should only be used to
power input devices (for example sensors and
switches). See Master Control Relay on page 2-8 for
information on MCR wiring in output circuits.
TIP
In the following diagrams, lower case alphabetic
subscripts are appended to common-terminal
connections to indicate that different power sources
may be used for different isolated groups, if desired.
L1a
L1b
L1a
L1b
L2a
L2b
IN 0
IN 2
IN 5
IN 7
IN 9
COM
1
IN 11
IN 13
NC
COM
0
IN 1
IN 3
IN 4
IN 6
IN 8
IN 10
IN 12
NC