變頻恒壓供水控制系統(tǒng)設(shè)計(jì)

1、變頻恒壓供水控制系統(tǒng)設(shè)計(jì)ABSTRACTAs China's social and economic development, urban construction and development very quickly, but also the construction of infrastructure facilities has put forward higher requirements. City water

2、supply system construction is one of the important aspects of the water supply reliability and stability, the economy of a direct impact on the user's normal work and life. As people on the water quality and water su

3、pply systems in the continuous improvement of reliability requirements, the use of advanced automation technology, control technology and communication technology, design a high-performance, high-energy, water supply pla

4、nts to adapt to the complex environment of constant pressure water supply Systems become an inevitable trendIn this paper, pipe network and pumps under the operation of the curve, clarify the water supply system for ener

5、gy-saving Frequency Control Principle; specific analysis of the frequency of the principle of constant pressure water supply system and the composition of the structure, through research and comparison, concluded: Freque

6、ncy Control is the highest international one-effectiveness, performance, the best and most widely, the most The future development of the Motor technology. Therefore this paper to adopt the PLC and inverter combination o

7、f a systematic approach to a small residential area pump motor control system for the target, and gradually clarified how to achieve a constant supply pressure.A control system for the main circuit design, control circui

8、t design. The input and output points to the statistics, a total of 13 input and output, the PLC in accordance with the principle of selection, equipment selection in the production of the most widely produced by Siemens

9、 S7-200 series (CPU222) of the PLC and pumps for MM430 The converter, using its own frequency converter itself to achieve the soft-start the pump motor launch. In the control process, the electronic control system comple

10、ted by the S7-200, PID control by the converter built-in PID control manner, in accordance with control system software and hardware design and control requirements, combining the functions of converter table preset para