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| Application of PLC on control system of deep purification of drinking water |
| MA Qiao-Hong1, LI Qian1, WANG Meng-Xiao1, LIU Qing-Li2 |
1.College of Electrical and Information Engineering, Shaanxi University of Science and Technology, Xianyang 712081, China;
2. College of Mechanical and Electrical Engineering, Shaanxi University ofScience and Technology, Xianyang 712081, China |
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Abstract According to the systematic process, characteristics and control requirements of water treatment process were analyzed. The configuration of softwareand hardware of the control system were properly conducted by adopting SiemensS7-200 PLC. With the powerful logical control ability and numerous inner timers, the application of PLC realized time control of water filtering, forward-washing and back-washing, and complicated chain control of pumps, motors and valves, by which the control system is guaranteed to perform safely and smoothly and a good effect is achieved in practice.
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Published: 28 December 2007
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PLC在饮用水深度净化控制系统中的应用
根据系统工艺，分析饮用水处理过程的特点和对控制系统的要求，采用西门子S7-200 PLC对控制系统的软硬件进行合理配置，利用PLC强大的逻辑控制功能和较多的内部时钟，实现控制系统的净水过滤和正反冲洗定时时间，各加压泵、反冲洗电机及众多阀门间复杂的联锁控制，保证了控制系统的安全可靠运行，并在运行中取得良好效果。
关键词：
可编程控制器,
深度处理,
过滤器,
定时器,
饮用水
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