The S7-200 PLC of SIMATIC Company was successfully applied in the control system of the feed-in the raw materials of the blast furnace. Siemens S7-200 PLC combine with blast furnace charging system,from a scheme of control device of programmable controller,finish the hardware design of electrical control system of 120m³ blast furnace material loading.Have realized the purpose of the realtime control of material providing and production process automation under the through and rise. Have used PLC in the design,There is a growing interest for the application of PLC and its networks in the field of industrialautomation. The automatic function and reliability of the feeding system in blast furnace are improved by the application.The realtime monitoring is realized and the technological composition can be easily made.
KEY WORDS plc blast furnace charging system automatic control