In this video, you will see how proportional works. You commonly see this in Building Automation programs. Understanding proportional will help you understand how most HVAC programs work such as cooling valve actuator programs to simple programs like staging on compressors.
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Timecodes
0:00 - Intro
6:11 - How does proportional work?
9:08 - Why is error important?
14:24 - Direct and reverse actions on a PID block
18:35 - First example of the program
23:56 - Second example of the program
25:50 - Why the second stage compressor doesn't turn on at times
28:10 - Recap