3.Automatically idendtify the motor parameters, intelligent adjustment to the best control mode. 4.Deard time compensation and automatic slip compensation function, low frequency 0.25hz can be achieved under sensorless vector control. 5.Simple plc function can realize up to 16 segments speed and 4 segments acceleration control. 6.¡±one key to shuttle¡± keyboard, swirling free, two way custom button with the demand for expansion. 7.Multi-language, humanization display menu, highlighted oled+led simultaneous display 3 groups of state parameters. 8.Keyboard is hot-pluggable and can store/copy 4 groups of operating parameter programs 9.Powerful communications function which can support standard to support standard rs485 and modbus, meanwhile providing remote keyboard control. 10. Dual analog input, custom control mode, free combination of control factors 11.Short-circuit protection, more safer and more stable 12. New thermal management structure, unique duct design and thermostat heat agencies, allow the product to run more stable and longer 13 standards emc design to minimize pollution for power 14. All strengthened pcb coating working well in kinds of environments The main application fileds: metallurgy, petroleum, chemical, textile, electric power, building materials, coal, medicine, food, paper, plastics, printing and dyeing, lifting, cable, washing, water supply, heating and ventilation, sewage treatment and other industries, machinery and equipment for: drawing machines, blenders, cutting machine, winding Standard