Variable frequency drive control options
I am looking to set up our new brewhouse with VFDs for several of our pumps. All of the drives that I've seen, including the one in use at our current facility, have the speed control pot as an integral part of the whole controller. I would like to be able to locate all of the controllers (i.e. the motor starter/thermal overloads/frequency drive units) in one location and simply wire speed control pots and on/off switches to the points where I would like to have the controls. This allows me to put the controllers in a centrally located, well ventilated (cooled) cabinet while keeping the actual speed control where I need it. Does anyone have any suggestion for where to look for this type of controller?
In case I'm not being clear, here's an example:
My wort pump would have a VFD, located near a central breaker panel in a well ventilated electrical enclosure. I would like to place a simple potentiometer, "pot", type dial control ( or even a digital control) at the point of use, 20 or 30 wire feet away. Presumably, I would also need an on/off switch of some sort at the point of use also, rather than just dialing the pot back to zero to turn the pump off.
The reason for this approach is that I'd like to keep the heat down around the VFDs and I don't want to have to put in separate, ventilated enclosures for each one, especially in a rinse-down area.
Free State Brewing Co.