Features: V/F control, vector control and output torque control. Built-in RS-485 communication interface. With a speed potentiometer and external panel. Built-in synchronous control and proportional synchronization control. 6 speed control modes, Can run automatically. Can choose multiple running commands or frequency channel. Can be achieved part or all of the keys locked(Analog potentiometer unlock). Relay normally open or closed and two high configuration output have 100 children of ways optional. 6 digital opto-isolated inputs, 100 children of ways optional. 3 analog input, 1 analog output channel. Having textile pendulum frequency function, it can be widely applications for textile equipment. Built-in user-defined timer. Built-in PID regulation function to facilitate the implementation of closed loop control of the temperature, pressure and tension. At zero speed, can output 0-100% of adjustable torque, with zero speed brake function.