工业生产现场的环境条件一般是比较恶劣的，干扰源众多。例如大功率用电设备的启动或者停止引起电网电压的波动形成低频干扰；电焊机、电火花加工机床、电机的电刷等会产生高频电火花干扰；各种动力电源线会通过电磁耦合产生工频干扰等等。这些干扰都会影响可编程控制器的正常工作。①电动机M2运转后M1运转，即飞锯旋转后再送入钢管。当向PLC基本单元供电时，基本单元表面上设置的［POWER］LED指示灯会亮。如果电源合上但［POWER］LED指示灯不亮，请确认电源接线。另外，若同一电源有驱动传感器等时，请确认有无负载短路或过电流。若不是上述原因，则可能是PLC内混入导电性***或其他异常情况，使基本单元内的***丝熔断，此时可通过更换***丝来解决。对于小型控制系统或不需要在线编程的系统，一般选用价格便宜的简易编程器。对于由中、***PLC构成的复杂系统或需要在线编程的PLC系统，可以选配功能强、编程方便的智能编程器，但智能编程器价格较贵。如果有现成的个人计算机，也可以选用PLC的编程软件，在个人计算机上实现编程器的功能。理论课的首要任务是让学生明确PLC是什么？PLC能做什么？怎么做？教师可以通过一个简单、形象实例LammfellstiefelHedgehogWinterstiefelFell-StiefelBootsGr.37,38,39braunBALLUFFfinoam-6022-019-050-03-st14Processorebis00f0PROFIBUSVERSIONE3.5CUTLER-HAMMERQCF2030HTCircuitBreaker;2-P30Amp240Vac-ABBEOH362RKHDFusibleHe***yDutySAFETYSWITCH60A3P600V-SiemensSimatic6es7648-6ca03-1yx0,PcDiagMoniteurV3.1LogicielSingleSickw4sl-3,wse4sl-3p22372064097,wse4sl-3d22362064095LightButtonSetChessell300DZ-FoldThermalChartRecorder,Range:0-500°F,20minpercmIlluminationTechnologies5390-WHT-03MiniDriver,W***elength/Color:5500K/WhiteNewSiemens6ES5464-8MF21AnalogInputModule,2xPt100InputsNewChicagoFaucets2200-200KJKCPReplacementMarathonFaucetHandle&CartridgeREXROTHBOSCH261-208-130-0NEW261PNEUMATICVALVE2612081300LOTOF10AJAXTOOLS401SHANKMECH-AIDRETAINERSPRINGS3JW38NEW3JW38SchneiderATV61H075M3VariableFrequencyDriveVFD,1HP,200-240V,ABB5692435LPLSR2XM0/K10ENCODERNEW5692435LBfVerticaleFlexCanaleC***iC***oaSpiraleKabelzuführungPlasticaArgento81BalluffBESM08MI-PS***0B-S49GinduktiverSensorBES01ZWSchaltabstand4mmABBT1N060TL3POLE60AMPTHERMALMAGNETICCIRCUITBREAKERStarTechUSB-Cto4KHDMIMultifunctionAdapterw/PowerDelivery&USB-APortSiemens6ES5355-3UA11SIMATICS5speicherbaugruppe6ES5355-3UA11Version4FactsEngineeringProgrammableControllerF1-130DR-Surplus!FasTestFI2InternalPneumaticBaseConnector120psiMax1/8NPT*NeedsSealKit*CUMMINSGENUINEREMANUFACTUREDT/SINJECTORPART#3047973PX".***CMXQ8L-10APneumaticSlideTable,8mmBore,10mmStroke,Symmetric***CMXS8-20PneumaticDualShaftGuidedLinearCylinderSlideTable0.15-0.7mPaRELIANCEELECTRICCURRENTLOOPDRIVER0-51865-2NEW-NOBOX0518652LOTOF2AMPHENOL97-3102A24-5PNEW16POSTTTIONCONNECTORS973102A245P2pc.AirHandler6B591Mini-PleatAirFilterw/PaperFrameSLP420x25x4,KawasakiRobotics50975-1853WiringHarness,37-PinD-Subto4x8-Pin2x6-PinKeyenceLV-H62Retro-reflektierenderMesskopf,LasersensorIxsTengaiZ7379-003PantalonesMoto,NegroMangueraNegroTama?odeMUJERSIEMENSS11JKD62AMCCBShuntTripW/AuxiliarySwitch125VDC-SIEMENSSBSDRBSecondaryDisconnectAsseblyForSBBreakersSiemensSirius4-PoleContactor3ZX1012-0RT13-1AA1-Surplus!ParkerACServoDrivePD-04C-Surplus!Allen-Bradley20-HIM-C5SSerARemoteProgrammerPanelMountHMIPowerFlex70LCDGATESGENUINEPARTSBELTPART#9660HDNationalInstrumentsPXI-1042Chassis,WithPXI-8106PXI-6052EPXI-8421PXI-6508ParkerCV-1-1144CheckValve,1/4"NPT,Crack.25PSI,Max120PSI,PTFELOTOF9INTERTECHPRECISIONMALEBLADESKST50-12-RBNEWKST5012RBFANUCA20B-2000-0175PCBMASTERS-ONEWA20B20000175DATEMPOROLOG172BOARDA2-83-6709/2USEDA28367092BACHARACHGASDETECTOR9550-1020REMAN95501020Gemü12833P-Controller,698électromoteurVanne&agr***e;Membrane,Entra?nementMoteurDGDGardnerDenver960730-bcontroller-cSTNMm-pro-400touch-screenTESTATO!RexnordLink-BeltF3S220E1-1/4"Flange-Mount4-BoltBallBearingUnitPULSDimensionCS3SwitchingDINRailMountDCPowerSupplyCS3.241Siemens6GK1503-3CB00ProfibusObianuju/G12V4.0OpticalLinkModule6GK1SIEMENS1fk7080-5af71-1eh0simoticssynchron-servomotor1fk7080-5af71-1eh0ESCManufacturing01-142-0RevBStepperDriveCLAROSTATRESISTORPART#VK-100-NA15SchneiderTSX3708001ModiconModularBasePLCControllerChassisRack,3-SlotNew***CMKB16-20RZRotaryClampCylinder,WithMK-A016ZClampingArm,1.0MPaGOEBELELECTRONICBOARDFB112-3USEDFB1123SPECTRA3500-100BOARD3500100BOXOF10COOPERIG5262RNNEWORANGE15A125VDUPLEXRECEPT***ESIG5262RNH.S.S.ConvexMillingCutter,1/16x2-1/4x1,ShiroMangiatoSh-3700,Nero,Grigio,CascoIntegrale,Moto,Casco,TagliaXLKeyenceLV-21AP+LV-H62Messverst?rkermitLasermesskopf,LaserEATON10250T476HILLUMPUSHBUTTON24VFVINCAND.-CLASSIDIV2F1-4A4-NIB!!GETR1515CircuitBreaker15Amp2-Pole240V-Reconditioned/TestedSiemensTouchPanelTP27COLOR6***3627-1QK00-2AX0,6***3627-1QK00-2AX0Yates18″Stroke,HydraulicCylinderR9647NTNGENUINEBEARING&CUPPART#44006I-T-ESIEMENSED42B01515AMPCIRCUITBREAKER(ONEONLY)NewThomasC85485-PValveAssyServiceKit270072,270073,270080AirCompressorLotof11New***CSY3000-6A-C6One-TouchSolenoidValveBlockPorts6mmLOTOF10KURTLESKERNEW6"FLANGECOPPERGASKETS4.743"OD4.006"IDSPECTRANC-A94V-0BOARDNCA94V0Liebert02-792203-00PCBControllerBufferAssy,Rev.4,P/L10,ExcellentCarrierHR54KL236PushButtonSelector,4POSTTTION,DaineseTrajeCuero,Chaqueta,Manguera,Negro,Plata,Rojo,Blanco,Talla44,PhoenixContactFLMDIO8/4M8DezentralesI/O-Ger?t2773351DistributedI/O16INCHMOHAGANYDRAWERSLIDE-WOOD(LOTOF10)W/FREESHIPPING!!RawThrillsArcadeBig***HunterProShotgunGunCableAssemblyTRSystemtechnikMDR-8SubModuleDigitalEditionRELAYOUTPUTRELAY8OutletSiemens6SL3120-1TE28-5AA3SINAMICSS120SingleMotor-Module,Version:EBannerB3-1500BRBPhotoelectricAmplifierLogicModulew/RelayControl115VACExergenCorpIRT/c.01J-180F/90CInfraredThermocoupleThermoRamseyECW950100401DistributionCircuitControlBoard78ScrewTerminalParkerCompumotor71-016022-10EncoderCableELANDIGITALSYSTEMSTWINSOCKETBOARDPCB64150121-63USEDPCB6415012163WARNERCLUTCHMODULE5370-270-015USED5370270015COOPERBUS***ANNNOS-150NEW150AONETIMEBUSSFUSE600VNOS150ALLENBRADLEY1762-L40BWASER.CREV.GUSEDMICROLOGIX1200FRN101762L40BWAFestoYSR-10-10-CSto?d?mpferD?mpfer191199C3Wmax6NmIpfOt140476ópticaSensorOT140476LuzRojaNuevo/Emb.origFPE2P30STAB-LOKCIRCUITBREAKER30A2P240V-RECON/TESTEDABBControlP1-2E2A145N4-30-11-84NEMASZ4120VCOIL-FREESHIP***Cmhzl2-20dpmatique2-finger-greiferparallelgreiferfingerhub18mmFSiemens6ES71324FB010AB0ElectronicModuleforet200S,6ES71324FB010AB0IogearGUW101AWirelessUSBAudioAdapter,Voltage:5VDC,AudioOutput:2CHDACAllenBradley1747-SDNSLC500DeviceNetScannerModuleSeriesB5VDCBackplaneSiemensXLVB451NXJ-LHe***yDutyBuswayFusiblePlugSwitch600VAC/30A,4-PoleLotof3***CSV2100-5FUSolenoidValves,2-POSTTTION5-Port,WithOneRegulatorTQSTQM167-ACRKREV.610NEWPCBOARDTQM167ACRKLOTOF12COOPERBUS***ANNBUSSFUSETRONFUSESFRS-R-6-1/4USEDFRSR614ABB3HAA3563-AAAUSEDDSQC248TEACHPENDANTBOARD3HAA3563AAALambdaEWS150-48PowerSupply120/240VACInput48VDC3.15AOutput150WRexrothr165331220kugelwagenGuíarollenschienenführunglinealCojineteBALLUFFBOS65k-5-b8t-2p-s4opto-electrónicosSENSOR0,3-8mKILLARKKRS-20DELAYEDACTIONRECET***E20AMP2WIRE3-POLECUTLER-HAMMERD26MR40ATYPEMRELAY;600V4-POLES(4N.O-0N.C.)-AscoAutomaticSwitchfor2-WaySolenoidP8262C2Siemens6DS1715-8BBTelepermAnalogRechnerbaugruppe6DS1715-8BB,HW10AllenBradleyRelianceElectricF-4075-R-H00AABrushlessServoMotor,240VACILXLightw***eML7701A-01LaserDiode*SeeDetails*MellesGriotHeliumNeonLaser14"WithCasing**FORPARTSONLY**MatroxY7044-00CameraLinkCableAdapterFANUCA20B-2900-0930USEDMODULEA20B29000930MAHLEPI200/210NEW300-600LITERFILTERELEMENTHOUSING611.598.4PI200210KromSchroderVG40N01-N93AirGasSolenoidValve120VAC1-1/2"NPTPipe2PSIGALLENBRADLEY22C-B033N103SER.AUSEDPOWERFLEX400ACDRIVE10HP22CB033N103)