Allen-Bradley MicroLogix 1100 User Manual

231 Publication 1763-UM001E-EN-P - June 2015
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.

Allen-Bradley MicroLogix 1100 Specifications

General

Processor	32-bit
Programming Software	RSLogix 500
Mounting	DIN rail or panel mount
Power Supply	24V DC
Type	Compact PLC
Digital Inputs	12
Digital Outputs	8
Analog Inputs	4 (depending on model)
Analog Outputs	Optional with expansion module
Programming Language	Ladder Logic
Operating Temperature	0 to 55 °C (32 to 131 °F)
Series	MicroLogix