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1、外文原文 Wincc in heating supply stapply stations Constant Pressure Monitoring System Application onstant voltage supply basic working principleSystem uses Automatic Frequency Control regulation or pump motor speed. Plus or minus pump.It is primarily by the Frequency Control System.PID regulator,pressur
2、e sensors,liquid level sensor power control circuits and other conponents.Host users control system or control board light over-the-counter transactions,buttons,switchto understand and control systen operation,Based on the PID control mode,the operator interface settings in water pressure,PLC to pre
3、ssure settings and measured valucs for the deviation PID operation and regulation of distribution through inverter pump speed,so that water pressure was maintained at the set value.Systen hanlware configurationThe system uses Siernens S7-200 PLC and its configuration software constitute a constant W
4、inCC V6.0 Water pressure control system,water pressure monitoring process.Industroal Ethernct controller for PLC and the operator station computer communication betwween the Remote I/O network for the PLC and the operator station compuler communication betwween the Remote I/O network for the PLC con
5、troller and inverter,the soft starter of communication betwween equipment.PLC controller mainly used to monitor and control water and electricity systems.For1#-4#pressurized pump converter using the ABB Acs510-01-031A4 inverter,HMI operatostation selection DELL conputers,conputer,Industrial Ethernet
6、 server card Siemens conmmunications company CP1612.Software design of SystenThe control system software company Siemens PCS7V5.2 package,STEP7V5.2 PLC controller mainly used to monitor and control water and electricity systems.For 1#4# pressurized pump converter using the ABB ACS510-031A4 inveter,H
7、MI operatorstation selection DELL puter,Industrial Ethernet server card Siemens communications company Cp1612Software design of System The control system software company Siemens PCS7V5.2 package.STEPV5.2 PLC controller.HMImonitoring system used WinCCV6.0 version.HMI server and operating station are
8、 using the Windows2000 operating system to have an open programming environment.Heating Sation Wincc configuration control software maior constant pressure water system and coal Gallery in two parts.Implemention of the system of automatic detection and automatic control.Detection constant pressure w
9、ater and coal Gallcry equipment operation parameters.the real-time data acquisition.uploads.real-time data acquisition.uploads,real-time display and recording.Ciontrol unit operation.fault alarm and automatic parking operation .Theconstant pressureof water supply pressure system configuration parame
10、ters.real-time monitoring regulatory pressure pumps water pressure and so valued.CoalHanding Gallery in to control the volume.of coal to speed,to monitor the quality of coal (coal crushing degree of quality and impurity)PLC-Based Fuzzy Constant water suppl;y system design constant pressure water sys
11、tem components.From the water supply system programmable controller,inverter,pressure transmiter,and the constact group on the pump unit and other components.Programmable controller selection of AB ControlLogix system.It includes Logix5550 controller,analog input modules,digital input and output mod
12、ules and communication modutes.Which analog input modute used to test the water pressure on the export signal,digital input module and valves Kai stopped.Inverselection of AB 1336 Plus Inverter.Inverter and Devi2 cenet controller thtough the network for communication.Constant Pressure Water Principl
13、eThe outlet channel of pressure sensor installation will export water pressure signals are converted to electrical signals, send PLC fuzzy inference operation, the output control signals to the converter, regulating the operation of pump motor speed, until the actual elimination of hydraulic pressur
14、e and set the deviation, constant voltage supply. Programmable controller can control pumps Kai stopped. When the system started working, inverter control from start on 1st pump frequency operation. If users increased consumption of the converter output frequency up to 50 Hz, the pressure will still
15、 be less than the set value, then after some time delay, on the 1st of the pump switching frequency operation; Inverter start again on the 2nd pump operation. If pressure is less than the set value, they will be on the 2nd to pump switching frequency operation; Inverter start again on the 3rd pump o
16、peration until the output pressure settings to achieve so far. However, if users to reduce water consumption, in accordance with the “Kai-stop” principle will be followed with pumps. This cycle repeatedly to achieve constant pressure water system.Fuzzy2PI control algorithmAs the water supply system in many areas (such as the pipe network and pumps) nonlinear, time-varying, and the variables still exist between the cross-coupling, so it i
