A certain incline hoist is driven by wound- rotor alternating-current motor, its operating process includes such five phases as accelerated movement in starting, uniform velocity movement, creeping and stopping. By the organic combination of the programmable logic controller (PLC) with the typical TKD electrical control system, it can be controlled with facility to draw up and lower the incline hoist. When starting the motor to draw up, the resistors are connected with the rotor coil of the motor in series so as to smoothly start the hoist. Then the starting current gradually descends as the increasing of the rotate speed of the rotor, while the resistors are cut off in time order, so that the incline hoist start to run in uniform velocity. When lowering the incline hoist, the dynamic braking and closed-loop controlling are adopted. The addition of PLC into the controlling system results that the complicated TKD system is easy to control.