First rate high performance vector Controlled variable frequency drives (VFDs, AC drives): 660vac, 680vac, 690vac... 

Application area:
mechanics, electronics, metallurgy, mining, petrochemical, transportation, building materials, municipal, metal processing, textile, printing and dyeing, paper making, Injection machine, central air conditioning, numerical control machine tool, air-compressor, fan and pump, blower, air conditioner for large buildings; wastewater treatment system; water supply system for large buildings; public water supply system and other industries and fields.

Sensorless Vector controlled variable frequency drive (VFD, frequency inverter), high performance, excellent quality and low pollution to the power, widely applied in the world for energy efficiency & better process control.

It achieves quick-response and precise control  by decoupling control of motor magnetic flux current and torque current, which makes the speed adjustment and torque control runs at a high degree of accuracy and wide range. 

Feature Introduction:
Ratings:
Power rating: 0.4 kw ~ 630 kw (less than 1 hp ~ 840 hp) or above.
Frequency scope: 0.00 ~ 2000.00Hz (for H series only, for G/S or other series, 0.00 - 800.00hz only)
Voltage grade: 3 phase (three phase) 660 VAC (650 VAC ~ 690 VAC)
3 phase input, 3 phase output.
Central control module based on DSP, realizes high-speed and high performance control. Integrate V/F control, V/F+PG control (optional), vector control. Automatic recognize the parameter of the motor! Auto-adjust to the best control mode!
Dead zone compensate function and Automatic slip compensate, 180% torque output can come out below 0.5HZ frequency.
Eight switch inputs, three analog inputs, two analog output, 0-10V or 0-20mA from inside the scope of the definition signal!
Support feedback signal: 0-10v, 1-5v, 0-20mA, 4-20mA
Simple PLC Function, at most 15 segments speed control and 8 segments acceleration control can be realized.
Humanization display menu, highlighted OLED+LED, simultaneous display 3 groups of state parameters.
Keyboard is hot-pluggable and can restore or copy 4 groups of running parameter programs.
Communication function which can support standard RS485 and Modbus and provide remote keyboard control .
Built-in PID self-adjusting
Rotate speed tracking start and power-off reset function
High effective function on default record and recheck, easy trouble-shooting.
Unique EMC design minimizes pollute to electricity resource.
Entire coating can work in various of severe environment.
Simplicity and fashionable design with industrialize features.
Low-frequency large torque, 0.3Hz with the 180% torque output;
Intelligent design, simple PLC & program can copy and download, the Electrical motor parameters are able to fulfill the smart identification;
Powerful communication function, RS485/MODBUS standard interfaces