1747-L514控制器1747-L514控制器1747-L514控制器(1)来自空间的辐***扰空间的辐射电磁场（EMI）主要是由电力网络、电气设备的暂态过程、雷电、无线电广播、电视、雷达、高频感应加热设备等产生的，通常称为辐***扰，其分布极为复杂。若PLC系统置于所射频场内，就回收到辐***扰，其影响主要通过两条路径；一是直接对PLC内部的辐射，由电路感应产生干扰；而是对PLC通信内网络的辐射，由通信线路的感应引入干扰。辐***扰与现场设备布置及设备所产生的电磁场大小，特别是频率有关，一般通过设置电缆和PLC局部及高压泄放元件进行保护。(2)来自系统外引线的干扰主要通过电源和信号线引入，通常称为传导干扰。这种干扰在我国工业现场较严重。(3)来自电源的干扰实践证明，因电源引入的干扰造成PLC控制系统故障的情况很多，笔者在某工程调试中遇到过，后更换隔离性能更高的PLC电源，问题才得到解决。PLC系统的正常供电电源均由电网供电。由于电网覆盖范围广，将受到所有空间电磁干扰而在线路上感应电压和电路。尤其是电网内部的变化，入开关操作浪涌、大型电力设备起停、交直流转动装置引起的谐波、电网短路暂态冲击等，都通过输电线路到电源边。PLC电源通常采用隔离电源，但其机构及制造工艺因素使其隔离性并不理想。实际上，由于分布参数特别是分布电容的存在，隔离是不可能的。ALLENBRADLEY1336-B003-EAD-​FA2-L1USPP1336B003EADFA2​L1OMRONAMD-SL1AC100/1​10USPPAMDSL1AC100110ALLENBRADLEY1756-LSPNSFP1756LSPTEXASINSTRUMENTSPLC500-5031USPP5005031NEWPERCEPTRON495-0191PCBOARDFRAMEGRABBER4950191MatsushitaPanasonicMSD023A2XXVACServoDriverTexasInstrumentsPM550-301TEXASINSTRUMENTSPLC2587695-8012NSPP25876958012ASEABROWNBOVERIGJV3-0743-11-R​0001USPPGJV3074311R000​1PanasonicACServoDriverMSDA043A1ANewinBoxFreeShipPERCEPTRON495-0102-01USPP495010201ALLENBRADLEY1326AB-B515E-2​1-LUSPP1326ABB515E21LMITSUBISHIAJ72-R25USPPAJ72R25TEXASINSTRUMENTSPLC555-1105USPP5551105TEXASINSTRUMENTSPLC505-4032ANSFP5054032ASEIKICOLTDINO-11-10-07-0​3USPPI***1100703TEXASINSTRUMENTSPLC164-1113USPP1641113PanasonicACServoMotorM***042A1GFreeShipASEABROWNBOVERI57310001-MPUSPP57310001MPASEABROWNBOVERIACS601-0016-4-​000B1500801USPPACS60100164000​B2COMPUMOTORPK-130USPPPK130TEXASINSTRUMENTSPLC3RW2-E045NSFP3RW2E045TEXASINSTRUMENTSPLC500-5039NSPP5005039NACHIUSADED-37-F3USPPUSADED37F3PanasonicMSD083A1XACServoDriverFreeShipGRACEINTERNATIONALCORP421421-3NSFP4214213ASEABROWNBOVERI3ADT306200R1NSPP3ADT306200R1TEXASINSTRUMENTSPLC500-5032USPP5005032MITSUBISHIBY171E584G51USPPBY171E584G51GETTYSN360-33809MUSPPN36033809MTEXASINSTRUMENTSPLC164-2111USPP1642111BOSCHB830-303074NSPPB830303074PANASONICSERVODRIVER/ADKA100​BPTADZ/AMKA080​810KAE/NEWALLENBRADLEY1334-COB-T1USPP1334CO1NewinBox530T-1112Siemens/TexasInstrumentsTIPLCProcessor530T1112N787PROFACEGP577R-T1-24​VPNSPPGP577RT124VPTEXASINSTRUMENTSPLC505-7190NSFP5057190TexasInstruments2490871ProcessorBoardTEXASINSTRUMENTSMODEL510-2101I/OEXPANSIONMODULEGORMANRUPP27781-035USPP27781035SENSORIK4031NSPP4031ASEABROWNBOVERI57772158NSPP57772158TEXASINSTRUMENTSPLC430-CPUNSPP430CPUSANYODENKIMC1K-U100USPPMC1KU100TEXASINSTRUMENTSPLC55IR8304070634USPP55IR8304070634GEFUJI6KES243002X4A1NSFP6KES243002X4A1(AB01)ACSERVODRIVERZ축DIRVERPANASONICMSDA041A1A07TEXASINSTRUMENTSPLC505-6308NSPP5056308505-4832TexasInstruments/Si​emensTI5054832R25MatsushitaPanasonicMSD023A2XXVACServoDriverPanasonicACServoMotorM***A102A1DFreeShipTEXASINSTRUMENTSPLC505-6202USPP5056202TexasInstruments500-503132ptLVDCoutput5005031ASEABROWNBOVERIMHB63700LNSFPMHB63700LPanasonicMinasACServoDriverMSD041A1XXDriveASEABROWNBOVERI3HAA2400-002NSPP3HAA2400002TEXASINSTRUMENTSPLC5TI-2000USPP5TI2000TexasInstruments5TI-1034-2PanasonicACServoDriverMSDA043A1ANewinBoxFreeShipGENERALELECTRIC193W-527ABG01USPP193W527ABG01ALLENBRADLEY8000-LBNSFP8000LBSUNXLTDMS-SF1-BNSFPMSSF1BPerceptronProcessorBoard495-0191FrameGrabber29400)