1771-DB控制器1771-DB控制器1771-DB控制器维控plc在恒压供暖系统的应用一、简介供暖系统主要用于北方冬季暖气系统供暖，控制两电机对供暖系统水压控制在恒定范围内，用plc控制减小了工作人员工作量，无需值班人员看守。二、特点1、使用维控的PLC，PLC型号为20MT。2、PLC程序内置算法，通过modbus通讯读取水压值以及变频器当前频率值，当水压不够使plc控制变频器让补水泵开始工作，一定时间内，启动1#补水泵变频启动，变频一定时间即变频达到50hz，水压仍然达不到值，1#补水泵切换到工频，2#变频启动，直到水压保持在设定值内，当水压恒定在设定值内，即1#工频2#变频运行，此时如果变频器频率低于设定的频率运行超过设定时间，将自动切换到1#变频启动状态。2#电机停止运行。3、系统中还包含无水信号、变频器故障报警信号。水箱中无水信号、变频器故障报警信号送达plc，系统停止工作。三、组成部分1、PLC负责动作的直接控制和外界反馈的信息的采集，实现供水系统的自动运作和故障检测。ASEABROWNBOVERI57360001-EL/1USPP57360001EL1TEXASINSTRUMENTSPLC315-DC-DRUSPP315DCDRTEXASINSTRUMENTS5TI-1013SEQUENCERMODULE***XLNT***PanasonicMSDA043D2A07400WServoDriverFreeShipSiemens/TI575-2103CPUModuleVMEPLCTexasInstruments5752103TexasInstrumentPM550-100GENERALELECTRICDS3800HIOA1C1EUSPPDS3800HIOA1C1EKOLLMORGENINDSERVOSTAR-603USPPSERVOST***03ALLENBRADLEY1326AB-B420H-2​1USPP1326ABB420H21ASEABROWNBOVERIYT212001-ACUSPPYT212001ACALLENBRADLEY1775-ME8NSFP1775ME8ASEABROWNBOVERI3HAB1093-015USPP3HAB1093015IMPCO19181-01NSFP1918101TEXASINSTRUMENTSPLC560-2134NSPP5602134SANYODENKI67ZA300LXX6C01USPP67ZA300LXX6C01TEXASINSTRUMENTSPLC335-1NIMNSFP3351NIMASEABROWNBOVERIASC60100065000​B1200000USPPASC60100065000​B1ASEABROWNBOVERI3HAB2214-1/1USPP3HAB221411TEXASINSTRUMENTSPLC949024-000-3USPP9490240003TEXASINSTRUMENTSPLC500-2153USPP5002153ASEABROWNBOVERIACS501-010-4-0​0P5NSFPACS501010400P5ASEABROWNBOVERIYB560103-CCUSPPYB560103CCASEABROWNBOVERI57770163USPP57770163SST5136-SD-104NSFP5136SD104FANUCA06B-0143-B075USPPA06B0143B075TEXASINSTRUMENTS500-5056MODULEDIGITALOUTPUT500SERIES5005056ASEABROWNBOVERI57288001USPP57288001TEXASINSTRUMENTSPLC505-CP1434TFNSPP505CP1434TFPanasonicACServoMotorM***041A1FEFreeShipASEABROWNBOVERI5736001-K/7USPP5736001K7Returns:NotacceptedTEXASINSTRUMENTSPLC500-2108USPP5002108PANASONICMFA030LA2NS300W3000RPMACSERVOMOTOR***XLNT***ASEABROWNBOVERI064851-001NSFP064851001ASEABROWNBOVERI3HAB2136-001USPP3HAB2136001ASEABROWNBOVERINBRA-658CUSPPNBRA658CTEXASINSTRUMENTSPLC505-2571USPP5052571OMRONC200H-MC221USPPC200HMC221SQUAREDMH36400USPPMH36400505-7038TexasInstruments/Si​emensTI5057038R33EECAEG380.6USPP3806Perceptron912-0008TricamSurfaceSensorASEABROWNBOVERI58097691NSFP58097691FOXBOROD3005PK-BBNSPPD3005PKBBASEABROWNBOVERI3HAA3563-AMA/0USPP3HAA3563AMA0PARKERLA470617U001FNFPLA470617U001PanasonicNachiACServoMotorMFMA552D5V35.5kWNEWASEABROWNBOVERI58094498USPP58094498ASEABROWNBOVERI57520001-CNUSPP57520001CNTexasInstruments(Siemens)Mdl:5TI-1082-2SequencerKEBCOMBIVERT09.F5.A1D-LAWAUSPP09F5A1DLAWAPanasonicM***022J1SXACServoMotorwith60daywarrantyRELIANCEELECTRIC0-55333-1USPP0553331MITSUBISHISP031J027NSFPSP031J027TexasInstruments500-5023ASEABROWNBOVERI52603668NSFP52603668ASEABROWNBOVERIDPH-07551NSFPDPH07551AMBITECHINDSS-4A-125WL45USPPSS4A125WL45NO***ON230260SUSPP230260SASEABROWNBOVERI57411546USPP57411546TEXASINSTRUMENTSPLC505-ATM-0440NSPP505ATM0440ROBOTRON710-APUSPP710APMILLTRONICS86112010NSFP86112010)