What is an analog input-output
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Answer Posted / mike
Analog input is the signal that a building automated system is telling a device or motor to do. The analog output is what the device or motor is actually doing. So let's say your Building automated system is telling your air handler main fan to run at 20%. That's your analog input. Your analog out put should be the same 20% signal from the controller and you fan should be running at 20%. If your input is 20% but your output is 0% and the fan is not running chances are you have a bad controller or there is a safety device that is preventing the controller to send the 20% output to your fan motor.
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