A 115/230 VAC, full-wave regenerative variable speed DC drive in a NEMA-4X/IP-65 washdown and watertight enclosure. Designed to operate 90 and 180 V permanent magnet and shunt wound DC motors in a bidirectional mode. It provides 4-quadrant operation, which allows forward and reverse torque in both speed directions. Motor overload protection will shut down control if the motor is overloaded for a predetermined amount of time. The exclusive auto-inhibit circuit allows safe, smooth starting during rapid cycling of the AC line.