Features: V/F control, vector control and output torsion 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 achieve part or all of the keys locked(Analog potentiometer unlock). Relay normally open and two high configuration output have 100 kinds of ways optional. 5 digital opto-isolated inputs, 100 kinds of ways optional. 1 analog input, 2 analog output channel. Having textile pendulum frequency function, It can be widely applications for textile equipment. Built-in user-defined timer / counter. At zero speed, can output 0-100% of adjustable torsion, with zero speed brake function. Specifications: Model: SKI780 Rated Voltage (Optional): 1-phase 220V to 3-phase 220V, 3-phase 380V to 3-phase 380V Output Power (Optional): 0.75/1.5/2.2kW Control Way: Current vector Output Voltage Regulation Mode: PWM control Size: Approx. 110 x 85 x 142mm / 4.3 x 3.3 x 5.6in Weight: Approx. 1000-1042g / 35.3-36.7oz Package List: 1 x Frequency Converte Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. This product is a new inverter, can only be used with the new panel, please refer to the picture to distinguish between the old and new panel, if your panel is the old model, it can not be used with this product. Package List 1V/F control, vector control and output torsion control. 2Built-in RS-485 communication interface. 3With a speed potentiometer and external panel. 4Builtin synchronous control and proportional synchronization control. 56 speed control modes, Can run automatically.