Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 64)

Chapter 3
Connecting the System
3–11
Powering the AIC+
!
ATTENTION: If you use an external power supply, it must be
24V dc. Permanent damage will result if miswired with the
wrong power source.
Set the DC Power Source selector switch to EXTERNAL before connecting
the power supply to the AIC+.
24VDC
DC
NEUT
CHS
GND
Bottom View
!
ATTENTION: Always connect the CHS GND (chassis ground)
terminal to the nearest earth ground. This connection must be
made whether or not an external 24V dc supply is used.
In normal operation with the MicroLogix 1000 programmable controller
connected to port 2 of the AIC+, the controller powers the AIC+. Any AIC+
not connected to a controller requires a 24V dc power supply. The AIC+
requires 85 mA at 24V dc.
If both the controller and external power are connected to the AIC+, the
power selection switch determines what device powers the AIC+.
Power Options
Below are two options for powering the AIC+:
•
Use the 24V dc user power supply (200 mA maximum) built into the
MicroLogix controller. The AIC+ is powered through a hard-wired
connection using a communication cable (1761-CBL-HM02, or
equivalent) connected to port 2.
•
Use an external DC power supply with the following specifications:
– operating voltage: 24V dc +20% / –15%
– output current: 120 mA minimum
– rated NEC
Make a hard-wired connection from the external supply to the screw
terminals on the bottom of the AIC+.