FD500 series high performance vector frequency inverter, simple and easy to use, can be applied to sewage treatment, HVAC, chemical, metallurgy, electric power and other industries of all kinds of load drive. FD500 series inverter provided with excellent vector control performance, achieving the integration of torque control and speed control, can drive stably in various complex operating conditions. Built-in a variety of fan and pump application macros, such as PID, multi-pump control, constant pressure water supply, etc., can effectively reduce the commissioning difficulty for engineers. Independent air duct design and thickening circuit board coating, can adapt to harsh environment applications, ensure that the equipment runs reliably for a long time, and reduce maintenance cost.