Fitz
Member
I searched on this type of thing, but only came up with heating controls which use one digital output.
My application has an analog flow input, and the "control variable" is a motor operated valve which is controlled by two relays; one to open the valve further, and one to close it further. I need to hold the flow rate to a setpoint of course. The trick is to convert the PID output value to digital signals to adjust the flow rate.
I have some ideas about how to get there, but I would appreciate some input or examples of similar control.
Thanks,
Fitz
My application has an analog flow input, and the "control variable" is a motor operated valve which is controlled by two relays; one to open the valve further, and one to close it further. I need to hold the flow rate to a setpoint of course. The trick is to convert the PID output value to digital signals to adjust the flow rate.
I have some ideas about how to get there, but I would appreciate some input or examples of similar control.
Thanks,
Fitz