Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 32)

Chapter 2
Wiring Your Controller
2–2
You must also provide an acceptable grounding path for each device in your
application. For more information on proper grounding guidelines, see the
Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1.
!
ATTENTION: Remove the protective wrap before applying
power to the controller. Failure to remove the wrap may cause
the controller to overheat.
Any MicroLogix 1000 DC inputs can be configured as sinking or sourcing
depending on how the DC COM terminal is wired.
Mode: Definition:
Sinking
The input energizes when high-level voltage is applied to the input terminal
(active high). Connect the power supply VDC (–) to the MicroLogix DC COM
terminal.
Sourcing
The input energizes when low-level voltage is applied to the input terminal
(active low). Connect the power supply VDC (+) to the MicroLogix DC COM
terminal.
Sinking and Sourcing Wiring Examples
I/9 I/10 DC
COM I/0 I/1 I/2 I/3 I/4 I/5 I/6 I/7 I/8 I/11 I/12 I/13 I/14 I/15 I/16 I/17 I/18 I/19 DC
COM
14–30 VDC
DC OUT
+ 24V –
VDC (+) for Sourcing VDC (–) for Sourcing
VDC (–)
for Sinking
VDC (+) for Sinking
I/9 I/10 DC
COM I/0 I/1 I/2 I/3 I/4 I/5 I/6 I/7 I/8 I/11 I/12 I/13 I/14 I/15 I/16 I/17 I/18 I/19 DC
COM
14–30 VDC
DC OUT
+ 24V –
VDC (–) for Sinking
VDC (+)
for Sinking VDC (–) for Sourcing
VDC (+)
for Sourcing
Sinking Inputs Sourcing Inputs
Sinking Inputs Sourcing Inputs
1761-L32BWA (Wiring diagrams also apply to 1761-L20BWA-5A,
-L16BWA, -L10BWA.)
Sinking and Sourcing Circuits