Study and design of simplified centralized control system of coal jigging plant

Based on analysis of the advantages and disadvantages of several kinds of equipment control systems currently available in coal jigging separation plants, a centralized control system having simple layout of circuits and practical functions is developed for such a plant.The control system can integrate the control of all the plant’s equipment with the control systems of the jigging machine and filter press according to requirement of coal cleaning process.While retaining the centralized control functions of the existing control system, the use of the system makes it possible to dispense with the full-time control operation personnel, write and read equipment operating parameters through RS485 communication and use buttons on touch screen instead of physical start buttons for simplification of hardware wiring.Field application of the control system at the coal preparation plant of Shandong Jiaxin Coal Co.Ltd.shows that the control system offers the merits of being simple in wiring, short in construction period, convenient in operation and low in fault rate, and its use can help realize downsizing of operating personnel and improve coal washing efficiency.