Variable frequency altering-speed system of supplying water for high building using PLC control was designed by double-channel integral circuit.
应用电子技术按设定频率上、下限实现自动转换的双通道积分电路，并按此设计PLC控制的变频调速高楼供水系统。
The movement law and electric driving system are analyzed. Variable frequency technique used in the system is discussed and PLC is used for automatic control of the pumping unit.
分析了数控抽油机的运动规律及电力拖动系统，论述了变频调速技术在系统中的应用。应用可编程控制器(PLC)完成抽油系统的自动控制。
The control system for heat-recovery process from circulating cooling of sintering machine is introduced. In this system small- sized DCS, PLC and variable frequency speed adjuster are composed.
介绍在烧结机环冷余热回收工艺中应用小型DCS、PLC与变频调速器所构成的控制系统。
The PLC control system, variable frequency speed control system, mathematics model technology and SCADA system is used. The system has been running well constantly.
该控制系统应用plc控制、变频调速、数学模型以及上位监控系统技术，达到了良好效果。
The PLC control system, variable frequency speed control system, mathematics model technology and SCADA system is used. The system has been running well constantly.
该控制系统应用plc控制、变频调速、数学模型以及上位监控系统技术，达到了良好效果。
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