1. Product Overview With the rapid development of China's modernization, although the power supply has been improved to a large extent, but the waste of energy is quite amazing. According to related statistics, China's fans, pumps, installed capacity of about more than 100 million kilowatts, accounting for about 30-40% of the national consumption of total electricity consumption. Due to the nature fans, pumps working mechanism, working always in a constant speed motor running condition, and often work in the wind, water flow requirements in the running variable condition, many units in the system design, the design capacity is too large, the system matches unreasonable, often "big horse cart", resulting in fans, pumps operating efficiency is only 30-50%, which is not only the high operating costs, and a waste of valuable energy. Therefore, to do the work of saving fans, pumps, and has important implications for the development of the national economy. Dr. Paul fan / pump combination of energy-saving control cabinet fans, pumps work characteristics, adjust the fan according to production requirements, the pump motor input frequency, change the motor speed, according to the production process requires reasonable adjustment of gas, liquid flow, velocity and pressure replace the fan wind deflector behind the regulation or pump valve opening degree way to reach both optimize the production process, but also the dual purpose of saving 20% ??-50% electricity. ? 2, the product features excellent soft start and soft stop function, reduce motor starting current, reduce the impact of the current impact of the grid to protect the motor, pump to prevent water hammer effect;? Optimize the production process, so that the gas and liquid flow velocity, pressure is more reasonable; system uses closed-loop control parameters overshoot small fluctuation range, acceleration and deceleration can be adjusted automatically according to process requirements;? a very sensitive fault detection, diagnosis, digital display, improve the reliability of the motor running;? User selectable with or without "Power / mains switching", easy to operate;? automation with remote control RS-485 interface for remote control;? a short circuit, overload, overheating, etc. complete protection;? Good-saving effect, according to the site to process requirements are inconsistent, the saving rate of 20% -50%. 3, the application range of this product is widely used in industry, heating boilers, cement kilns, coal, metallurgy industry, blast furnaces, converters, chemical plants, pharmaceutical plants, sewage treatment plants, oil, petrochemical plants, water supply companies and other industries, enterprises and frequency control where centrifugal fans, axial fans, Luoci fans, air compressors, centrifugal pumps, submersible pumps, circulating pumps, pump, high-pressure injection pump and other equipment and flow, flow rate and pressure regulation control.