Arizona Drivers License Practice Test

What is the main function of a control loop controller?

It sends a signal directly to a primary element It constantly compares input signals to the set point It does not require a set point value It eliminates the need for a primary element

Correct Answer:

It constantly compares input signals to the set point

Explanation:

The controller compares the process variable (input signal) to the desired set point and generates an output signal to minimize the error.

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