PLC Control System of the Stage Loader Based on Step Ladder Instruction

Abstract:

The purpose of this paper is to design an electric control system of stage loader which has clear logical relations and is easy to operate. The control system improved the working reliability of electric control system. Taking stage loader used in coal storage yard as an example, we introduce the mechanical structure and working principle of stage loader, mainly discuss about the components of electric control system, the action sequence of the actuator, electrical control PLC program .This paper pointes out that the use of step ladder instruction can make logical relations of action sequence clear and the use of state initialization instruction can make the state transitions among manual program, homing procedure, automatic continuous working procedure simple.

• Periodical: Applied Mechanics and Materials (Volumes 201-202)
• Pages: 442-445
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.201-202.442
• Online since: October 2012
• Authors: Xu Qin Chen, Guang Zhen Cheng
• Keywords: Electrical Control, Ladder Diagram Program, Sequential Function, Transshipment System

References

[1] S.H. Chen: Machinery equipment electrical control (South China University of Technology pres, China 2002) (in Chinese).

[2] Y.S. Fan: Electrical Control and PLC applications (China Electric Power Press, China 2006) (in Chinese).

[3] G.Y. Wang, Y.J. Jia, G.Z. Cheng: Coal mine machinery, Vols.28 (2007) No.3, pp.81-82(in Chinese).

[4] Z.Q. Qi: Machine Electrical Control Technology(Machinery Industry Press, China 2002) (in Chinese).

[5] G.Z. Cheng and Y.B. Cheng: Advanced Materials Research Vols. 201-203 (2011) pp.2338-2342.