... ~2.2KW inverter VVVF control, constant,vairable torque mode VD4 series single phase, 220V AC 1.5~2.2KW inverterVD4-21P5Suitable ... , 1.7th power, 1.2nd power)Accelerate/Decelerate curveTwo modes:linear Acc/Dec, S curve Acc/Dec;seven kinds of Acc ... cable of digital panel; brake resistor. frequency inverter Xinje VD4 series frequency inverter