E800 series frequency converter is a new generation of light-load frequency converter developed by Orui Drive. It adopts advanced control algorithm, rich system functions, can be built in EMI filter, strengthen electromagnetic compatibility design, compact structure, novel appearance. It has the advantages of high voltage utilization rate, high power factor, fast dynamic response, high precision, low noise, and can meet the needs of customers with light load. The E810 is a built-in BACnet bus vector converter based on the E800.