I picked up a used MIRARIK control and a leesson dc 1/3 hp 180v.I want to set up a variable speed grinding station for chisels, planer/jointer, etc. The label on the device says rg400u, input 230v, 60hz. The Minarik internet site does not list this device. Anyone have any info on this? How do I connect controls(switch, dials)? .. joe