COMMANDER has developed an advanced and highly efficient range of high performance Eddy Current Brake Units called ComDrive, for use on high integrity overhead travelling cranes and other equipment where accurate speed control and load safety is paramount. When used in conjunction with the Prospeed Closed Loop Control System, slip-ring wound rotor induction motor, contactor switch gear and specially graded resistance units, the ComDrive Unit provides a reliable failsafe speed control solution for both Crane and Hoist applications. Accurate pre-set speed control up to 5 speeds can be achieved in both directions of movement between 7.5% and 60% of the applied motor rated speed.