Title: Lab 5-5: Design and Build a Selectable Forward/Reverse Circuit
Course: Electrical Motor Controls (Sandbox) > Section: Module 5: Reversing, 8 hr

Introduction

Most of the reversing circuits you've built in Module 5 have had one thing in common: they used a forward button to energize the forward coil, and a reverse button to energize the reverse coil.

Now, you will design a circuit that uses one start button, one stop button, and one selector (maintained) switch to run a motor in forward or reverse.

The following must be followed and/or included in your circuit:

- The user uses a selector (maintained) switch to choose "forward" or "reverse".
- After the desired direction has been selected, the user presses the "Start" button and the correct coil energizes.
- To change direction, the user presses the "Stop" button, uses the selector switch to choose the other direction, and then presses "Start".
- The selected coil must stay energized until the user presses the "Stop" button. (In other words, use holding contacts. Think "typical motor circuit" as a starting point.)
- Include lights: one color light to indicate that the forward coil is energized and a different color light to indicate that the reverse coil is energized.
- Include circuit protection that will prevent the delivery of current to the forward coil and the reverse coil at the same time.

Lab Instructions

1. Unplug the Motor Controls trainer.
2. Draw a schematic diagram, in Automation Studio or by hand, that represents a circuit that will operate as described above. Make sure your circuit works in simulation before moving on to the next step.
3. Build the circuit on the Motor Controls trainer.
4. Plug in and turn on the Motor Controls trainer.
5. Test the circuit.
6. Design, build, and demonstrate a circuit that uses one "Start" button, one "Stop" button, and one selector (maintained) switch to run a motor in forward or reverse.

Submission

To complete this lab, submit a 30-second video following the criteria found in the rubric. If you are working with another student, each of you must record and submit your own video.

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