
Programmable Logic Controlers 
And
Industrial Motors Controls
This was a really really fun class! The hands-on approach of this course in conjuction with the chalenges found in
Ladder Diagram Programming and configuration of Variable Frequency Drivers and Allen-Bradley controlers,
combined with an array of motors, dynamometers, contactors, lights, timers, buzzers and lots of lots of push bottons,
made this class my number one favorite!
With the additional and unique opportunity that my lab partners and I had in putting together the newly arrived Allen-Bradley
controlers, LabView cabinnets, communication ports and contacters, as part of our extra curriculim assigment, it gave me an
appretiation for this field and its limitless applications in our "wired" world.

Schematic of Project 2, where we had two
different inductor motors - one synchronous and
the other one asynchronuous, connected to a VFD and a 2lb load.
Different acceleration rates had to be implemented so that
the motors would change speed, reverse and or stop
within a specified time window while keeping
certain frequecy charecteristics.
A picture follows bellow.
Schematic of Project 1, where we had three different
3 phase motors being activated at different time
from each other, with different frequencies
and RPM's of operation, following the
directives of our Ladder Diagram
Program and overrides of
strategically placed
push buttons.
Project 2 Connections

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Alex.Engineer@IEEE.org

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