♦Sensorless vector control with the best low frequency compensation ability ♦Designed with special radiator tree and switch power, all of such kinds of new technologies improve the performance ♦Several protective technologies and new component have been applied to the circuit, notably improve the anti-interference ability ♦Realize the preset frequency, or central frequency adjustable swing frequency function ♦Several phases speed operation controlled by build-in PLC or controlling terminal ♦Modulation Mode: space vector pulse width modulation SVPWM ♦Automatic energy saving operation: automatically optimize V/F curve to save the energy ♦Switch input channel: positive and reversal rotation control, 8 channel program switch input, 35 kinds of function ♦Strong overload performance: 150% rated current for 1 minute, 180% rated current for 3 seconds ♦Communication function: RS485 standard communication interface, support ASCII and RTU format MODBUS communication protocol