1747-L40E输出模块1747-L40E输出模块(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。SIEMENS/TI/TEX​ASINSTRUMENTS500-2109CONTROLLER**NI​B**CEGELECMLOUSPPMLOPanasonicMDDA353A2A50ServoDriveFreeShipASEABROWNBOVERI5716075-PUSPP5716075PMITSUBISHIMTA250-VUSPPMTA250VFISHERROSEMOUNT3051-CD1A22A1A​B4USPP3051CD1A22A1AB​4ASEABROWNBOVERIEH450C-32VDC-TNSPPEH450C32VDCTHITACHILINK-SHNSPPLINKSH(AS01)MSD043A1XXVPANASONICACSERVODRIVEUSEDWORKINGALLENBRADLEY1336S-BRF05-AA​-EN4-HA2NSFP1336SBRF05AAEN​4HSIEMENS6SC6000-ONA02USPP6SC6000ONA02ASEABROWNBOVERIGNT0137200R000​2USPPGNT0137200R000​2ASEABROWNBOVERITWK-G033055NSPPTWKG033055ALLENBRADLEY1785-LT2NSFP1785LT2VICKERSPVQ20-B2R-SE3S​-21-C21D12NSPPpvq20b2rse3s21​c2SIEMENS6XV1820535NSFP6XV1820535SIEMENS6FC5-203-0AB12​-0AA0USPP6FC52030AB120A​A0ASEABROWNBOVERIMK14A-X020USPPMK14AX020ASEABROWNBOVERIYB560103-BNUSPPYB560103BNASEABROWNBOVERIYPQ-101EUSPPYPQ101EALLENBRADLEY1333-EACUSPP1333EACALLENBRADLEY1336S-BRF05-AA​-EN4NSFP1336SBRF05AAEN​4GENERALELECTRICDS3800HIOA1B1BUSPPDS3800HIOA1B1BTEXASINSTRUMENTS545-1101TI545CPUMODULE5451101ASEABROWNBOVERI57310001-FHUSPP57310001FHTEXASINSTRUMENTSPLC2587695-8033NSFP25876958033TEXASINSTRUMENTSPLC505-7101NSPP5057101ASEABROWNBOVERIYB161102-BUNSPPYB161102BUPanasonicMFA020LE2NSCACServoMotorwith60daywarrantyTEXASINSTRUMENTSPLC560-2124USPP5602124GEFANUCIC600LX612NSFPIC600LX612TexasInstrumentsCTI505-2560-1,Repaired,AnalogOutTEXASINSTRUMENTSPLC2587695-8012NSPP25876958012NEXENGROUP912743NSFP912743TexasInstruments555-1101ALLENBRADLEY2711-TC1USPP2711TC1INDRAMATDDS2.1-A150-DUSPPDDS21A150DALLENBRADLEY1336F-BRF10-AA​-EN-HAS2-L9EUSPP1336FBRF10AAEN​HAPERCEPTRONDIGITAL3TRICAM917-4014LASERDIGITALSURFACESENSORASEABROWNBOVERIACS401601612USPPACS401601612OnePanasonicACServoDriverDV85018HA502TEXASINSTRUMENTSPLC500-5052USPP5005052TEXASINSTRUMENTSPLC505-7002NSFP5057002SQUARED8538-SCA44-V81​-CFF4PITUSPP8538SCA44V81CF​F4TEXASINSTRUMENTSPLC500-5828AUSPP5005828A(AC07)PANASONICM1D043A1XACSERVODRIVERUSEDWORKINGALLENBRADLEY8600-2158SUSPP86002158STEXASINSTRUMENTS500-50355005035MOTOROLA01-W3875B-04FUSPP01W3875B04FASEABROWNBOVERIYB560103-BENSPPYB560103BEASEABROWNBOVERIYT213001-BAUSPPYT213001BAPERCEPTRON9110021USPP9110021ALLENBRADLEY2705-EM11J1USPP2705EM11J1ALLENBRADLEY2711-B6C8USPP2711B6C8TexasInstruments5TI-3201RELIANCEELECTRIC0-51419NSFP051419SAJF//PANASONICMSDA041A1A07M***A041A1FACSERVODRIVERMOTORUSEDSQUAREDTVS-2EMA12ANSFPTVS2EMA12A505-3716TexasInstruments/Si​emensTI5053716R11ASEABROWNBOVERIYB560103-BENSPPYB560103BEASEABROWNBOVERI57510001-AA/3USPP57510001AA3NACHIUSADED-37-F3USPPUSADED37F3TexasInstruments46191PCBoardTRIADTR-24-2F-40NSPPTR242F40ASEABROWNBOVERIACS201-2P7-3-0​0-10USPPACS2012P730010CUTLERHAMMERHMCP400J5CNSFPHMCP400J5CTEXASINSTRUMENTSPLC55CR9602001052USPP55CR9602001052WEINIG1LA5131-2FB90-​ZUSPP1LA51312FB90ZBARBERCOLMAN80EB-10003-002​-0-00USPP80EB1000300200​0ALLENBRADLEY1775-ME8NSFP1775ME8NEWPERCEPTRONTRICAMSURFACESENSOR912-0037STEBONSDT-853-500-54​-N1623NSFPSDT85350054N16​23)