Rockwell Automation 1763 MicroLogix 1100 Programmable Controllers User Manual - Manual (Page 233)

231 Publication 1763-UM001D-EN-P - March 2011
Appendix
G
System Loading and Heat Dissipation
System Loading
Calculations The MicroLogix 1100 controller is designed to support up to any four 1762
expansion I/O modules.
When you connect MicroLogix accessories and expansion I/O, an electrical
load is placed on the controller power supply. This section shows how to
calculate the load of your control system.
The following example is provided to illustrate system loading calculation. The
system calculation procedure accounts for the amount of 5V DC and 24V DC
current consumed by controller, expansion I/O, and user-supplied equipment.
Use the System Loading Worksheet on page G-234 to calculate your controller
configuration.
TIP
A maximum of four 1762 I/O modules, in any
combination, can be connected to a MicroLogix 1100
controller. You can use this appendix to determine the
power supply load and heat dissipation for your
system.