The active reflector is one of innovation on five hundred meter aperture spherical telescope-FAST. 2300 controllers control movement of the reflector. When controllers receive observed commands from PC, target length of node is calculated through the planning algorithm. Controller actuates the motor, it makes lead screw elongation or contraction so that the reflector from sphere into paraboloid within the illumination area, achieves whole network control. Node Motor velocity and control algorithm are optimized in this paper. The optimized target is under the control accuracy, select the appropriate control period, reduce start number of motor, and thereby reduce motor wear. This paper will provide a available method on selecting motor type for the FAST.