Electric controller for PLC (Programmable Logic Controller) unit of water supply system
An electrical controller and water supply system technology, applied in water supply devices, program control, computer control, etc., can solve the problems of poor control system stability, high failure rate, and inability to display intuitively, and achieve the effect of ensuring pressure.
Inactive Publication Date: 2014-05-07
FUYANG BOJIN MACHINERY MFG
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Problems solved by technology
[0006] The purpose of the present invention is to provide a PLC unit electric controller of the water supply system, so as to solve the problem that the control equipment of the water supply system in the prior art cannot display various operating conditions of equipment such as water pumps or cannot be visually displayed; the stability of the control system is relatively poor, The failure rate is high, and it needs to rely on the hard wiring of the relay to realize the technical problem of the function after the failure
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0020] its reference to figure 1 , 2 , a water supply system PLC unit electrical controller, including a PLC main circuit unit 1, a frequency converter unit 2, a man-machine interface unit 3 and a multi-channel pump body 4, the man-machine interface unit 3 adopts a touch screen, and the PLC main circuit The unit 1 is electrically connected to the inverter unit 2 and the man-machine interface unit 3 respectively, and the PLC main circuit unit 1 is connected to any ...
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The invention relates to an electric controller for a PLC (Programmable Logic Controller) unit of a water supply system. The electric controller comprises a PLC main circuit unit, a frequency converter unit, a human-computer interface unit and multiple paths of pumps, wherein the PLC main circuit unit is respectively in electric connection with the frequency converter unit and the human-computer interface unit; the PLC main circuit unit is respectively connected with any path of pump through a frequency converting contactor and a power frequency contactor; the frequency converter unit is respectively connected with the pumps; the PLC main circuit unit is also connected with a remote transmitting pressure gage. Compared with the prior art, the electric controller for the PLC unit of the water supply system provided by the invention has the advantages that the monitoring for a touch screen is controlled by the PLC main circuit unit, so that the running condition of equipment is clear at a glance; the output frequency of the frequency converter is automatically tracked and adjusted according to the preset pressure, so that the rotating speed of the water pump is adjusted; the quantity of the working pumps is automatically switched according to the water consumption, so that the constant pressure of a pump pipe network is ensured.
Description
technical field [0001] The invention relates to the technical field of water supply system control, in particular to an electric controller of a PLC unit of a water supply system. Background technique [0002] As a high-energy-consuming general-purpose water supply machine, water pumps are widely used in various fields of agricultural production and resident life. The annual electric energy consumed by water pump units accounts for a large part of the country's total power consumption. The existing water supply system adopts frequency conversion The control technology controls the water output of the water pump to meet the needs of agricultural production and residents' life, but the existing control equipment has the following defects: [0003] Various operating conditions of equipment such as water pumps cannot be displayed or displayed intuitively; [0004] The stability of the control system is relatively poor, and the failure rate is high. After a failure, it needs to ...
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IPC IPC(8): E03B5/00G05B19/045
Inventor 李群伟王彭炎
Owner FUYANG BOJIN MACHINERY MFG