Float switch according to the required water level changes, automatic control of pump start and stop, do not need special care.

浮球开关可以根据所需的水位变化，自动控制泵的启动与停止，不需专人看管。

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The technology process and the control demands of a waste water pump are presented, and the design of hardware and software based on PLC for the pump station automatic control are described.

介绍了一个污水泵站的控制工艺和控制要求，阐述了泵站自动控制系统中plc的硬件、软件设计。

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Operation of excess sludge pump is controlled by the computer inside central control room or by PLC under automatic mode.

由中控室内的终端机开关旁通电动蝶阀或由PLC控制自动运行。

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