1771-IQ输入模块1771-IQ输入模块1771-IQ输入模块(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。FujiHensokukiCOGeardMotorMT-9-5.4-002LAPanasonicACServoMotorMQMA022P2BMODICON610-MSA-210-30USPP610MSA21030PANASONICACSERVODRIVERMDD203A1W200V50/60HZ2.0KW2500P/RHASEARO39566013NSPP39566013PanasonicACServodriverMSDA043A1ATexasInstruments510-1101GEFANUC44A391712-G02USPP44A391712G02PanasonicServoMotorM***D012P1UM***DO12P1UNIBFreShipRELIANCEELECTRICKC170105-7USPPKC1701057TEXASINSTRUMENTSPLC5TI-5011NSPP5TI5011ALLENBRADLEY1326-CPB1-060NSPP1326CPB1060MITSUBISHIA1SJ71E71N-B2NSFPA1SJ71E71NB2(AG01)PANASONICM***021ABFACSERVOMOTORWORKINGTEXASINSTRUMENTSPLC510NSFP510PANASONICACSERVODRIVERMUDS011A1ATEXASINSTRUMENTSPLC505-ATM-0440USPP505ATM0440TEXASINSTRUMENTS5TI-20015TIPROGRAMMER*NEW?(AA01)ACSERVODRIVERPANASONICMATSUSHITAMSD021P1EA01WORKINGPanasonicACServoMotorM***082A1ENEWFreeShipALLENBRADLEY1784-KTK1NSPP1784KTK1TexasInstruments500-5031PanasonicACServoMotorM***A082A1AFreeShipPanasonicM***022A1AEACServoMotorTEXASINSTRUMENTSPLC500-5047ANSFP5005047ASIEMENS6RB2-000-0GB01USPP6RB20000GB01Returns:NotacceptedBAUMANN54R-25000NSFP54R25000SIEMENS6XV1820535NSFP6XV1820535GEFANUCIC3600AOAL1D1USPPIC3600AOAL1D1SIEMENSTI575-2102VMEPLCASEABROWNBOVERIACS601-0040-4-​000B1200801USPPACS60100404000​B1KEBCOMBIVERT17.F4.F1H-4R01NSPP17F4F1H4R01GENERALELECTRICDS3800DMPC1F1EUSPPDS3800DMPC1F1EASEABROWNBOVERIAPTBK-02USPPAPTBK02SIEMENS6ES7-215-2BD00​-0XB0USPP6ES72152BD000X​B0TEXASINSTRUMENTS500-5001INPUTMODULELOT5005001ASEABROWNBOVERIDSPC-171USPPDSPC171PanasonicACServoMotorM***D082S1TFreeShipPanasonicMinasACServoDriverMSD041A1XXDriveNEWSIEMENSTITEXASINSTRUMENTSOUTPUTMODULE500-5011TexasInstruments530C-1104TEXASINSTRUMENTSPLC505-2572USPP5052572PERCEPTRON911-0007USPP9110007TEXASINSTRUMENTSPLCU-01ZUSPPU01ZDYNAMATIC15-902-100USPP15902100PanasonicACServoDriverDriverMSD043A1XXVFreeShippingWorldwideSQUAREDKA36200GUSPPKA36200GTRON630264USPP630264TEXASINSTRUMENTSPLC505-4616NSPP5054616CUTLERHAMMERLD3450USPPLD3450TexasInstrumentsRTU-DOR1DigitalOutputRelay520-064520064RTUDOR1ASEABROWNBOVERI3HAA3563-AHA/1USPP3HAA3563AHA1ALLENBRADLEY1336F-BRF100-A​E-DE-HAS2USPP1336FBRF100AED​EHALLENBRADLEY810-A10CNSFP810A10CTEXASINSTRUMENTSPLC335-1NIMNSFP3351NIMALLENBRADLEY2098-IPD-020USPP2098IPD020SIEMENS6SL3-000-0BE25​-5AA0NSFP6SL30000BE255A​A0TEXASINSTRUMENTSPLC120-1112NSFP1201112545-1101TexasInstrumentsSimaticPLCTI545TI5451101N300OnePanasonicACServoDriverM***A013A1AFreeShipTEXASINSTRUMENTSPLC500-5031NSPP5005031PanasonicMDDCT5325B14ACServoDrive1.5kWFreeShipGENERALELECTRICDS3800NPSF1D1EUSPPDS3800NPSF1D1E)