The paper briefly introduces the characteristics, principles, structure and function of the electric control system of belt conveyer.

This paper makes analyses of the causes of the belt conveyer s of f- tracking problem existing in the production of the supported belt conveyer o f the long- distance belt conveyer, through structural transformation of the be lt conveyer, its ability against the off- tracking is increased, obtaining exce llent results.

This paper briefly introduces the improvement of belt conveyer s fe ed ing runner for the purpose of prolonging the working life of the feeding runner and lightening the impact of the material transferred on the feeding runner.

Based on the accident analysis of the belt conveyor,shows that the appearances of the belt friction with the metal generates fire,belt blocking,belt down sliding,the bydraulic coupling generates fire,can only be prevented by the measures of production management and technical management.

<Abstrcat>Based on modern control system of belt conveyor,a control program for conveyor is designed,which use PLC as core,micro-computer as remote computer,sensor as live parameter check, mechanical electronic soft start system as execution mechanism.