The composition and operational principle of an automatic frequency con version constant pressure water supplying system based on PLC and frequency convertor with serial communication are introduced.
介绍了一种基于PLC和变频器采用串行总线方式通讯的变频恒压供水系统的构成和工作原理。
This paper describes a new technology for water supplying system with constant pressure. It is verified that the system has obtained good economic and social benefits through time sharing operation.
介绍运用变频调速恒压供水技术，根据用户需水量变化情况，分时间段设定合适的压力值进行操作，取得了良好的经济和社会效益。
This paper describes a new technology for water supplying system with constant pressure. It is verified that the system has obtained good economic and social benefits through time sharing operation.
介绍运用变频调速恒压供水技术，根据用户需水量变化情况，分时间段设定合适的压力值进行操作，取得了良好的经济和社会效益。
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