In manufacturing plants, an operator may start a machine without a clear view of that machine.
When they do, they need to alert anyone that may be near that the machine is about to start. Normally this is done by setting off an audible alarm (a Pre-Start Alarm) for a few seconds before starting the machine. Workers are then trained to respond to the alarm. If the workers hear this alarm, they are to stay clear of the machinery because it's about to start.
Your assignment for this lab is to design and build a circuit to accomplish this kind of alert. When the user presses the "Start" button, a buzzer goes off for three seconds. (Note: In Automation Studio, there is not a symbol for a buzzer, so you will need to choose a substitute output, like a Solenoid, in your schematic.) After that three seconds, a motor starter coil energizes.
You are expected to use a control relay and a timing relay in your design. Do not use a maintained switch to run the system. Use a "Start" button and a "Stop" button. The user should press and then release the "Start" button to start the system, and press and release the "Stop" button to stop the system.
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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