The NH820 series frequency converter is a universal frequency converter that can easily drive and control asynchronous motors. It has powerful functions, stable performance, and certification. The main control chip adopts a motor control dedicated DSP chip, which can achieve higher performance and higher precision motor drive control, switching mode, advanced PID algorithm, 15 speed and automatic program operation, as well as instant load shedding and speed tracking functions. While improving productivity, it strengthens customer usability and fully specialized design, optimizes functions, makes applications more flexible, and has more stable performance in industries such as paper, wire drawing, machine tools, packaging, food, fans, water pumps, and various automated production equipment series. The NH820 series frequency converter is a universal frequency converter that can easily drive and control asynchronous motors. It has powerful functions, stable performance, and certification. The main control chip adopts a motor control dedicated DSP chip, which can achieve higher performance and higher precision motor drive control, switching mode, advanced PID algorithm, 15 speed and automatic program operation, as well as instant load shedding and speed tracking functions. While improving productivity, it strengthens customer usability and fully specialized design, optimizes functions, makes applications more flexible, and has more stable performance in industries such as paper, wire drawing, machine tools, packaging, food, fans, water pumps, and various automated production equipment series. Its characteristics: It can avoid overcurrent faults caused by direct start-up and achieve smooth start-up; When the motor torque requirement is low, reduce the excitation current according to the load current; Maximizing motor efficiency; Reduce motor losses and minimize energy losses; Three types of curve setting methods: straight curve is suitable for ordinary constant torque loads, multi-point curve is suitable for dehydrator and centrifuge loads, and square curve is suitable for fan and water pump loads. The curve can be adjusted at three points, and the most suitable curve can be set according to the torque characteristics of the equipment to achieve better energy-saving effects; Can achieve smooth start-up and avoid overcurrent faults caused by direct start-up; More suitable for fans and pumps, the product features can avoid overcurrent faults caused by direct start-up and achieve smooth start-up; When the motor torque requirement is low, reduce the excitation current according to the load current; Maximizing motor efficiency; Reduce motor losses and minimize energy losses; Three types of curve setting methods: straight curve is suitable for ordinary constant torque loads, multi-point curve is suitable for dehydrator and centrifuge loads, and square curve is suitable for fan and water pump loads. The curve can be adjusted at three points, and the most suitable curve can be set according to the torque characteristics of the equipment to achieve better energy-saving effects; Can achieve smooth start-up and avoid overcurrent faults caused by direct start-up; More suitable for use with fans and water pumps