3VU1300-1MG00模块;3VU1300-1MG00模块;3VU1300-1MG00模块SIEMENS6SE3114维修实例故障现象：接通电源无反应，测560V直流电源正常，开关电源无输出。检查思路：该机采用UC3844作PWM调制，驱动大功率开关场效应管输出，查其退耦电容C56有轻微漏电，更换后试机一切正常。由于C56的漏电把UC3844的工作电源其中一部份旁路掉，并且供电限流电阻值较大（1M）UC3844无法达到启动阀值而误检测作欠压而不开机。普传5.5KW故障现象：接通电源无任何已通电迹象。故障检修：此故障可能为CPU本身的电源故障。打开机盖发现整流与输出的一体化大功率模块有裂开现象，细查此为人为造成，并无烧焦痕迹，但内部多处连线均已撬断损坏，无法再用。重新换上一块MUBW15-12A7后通电，显示出现EPERR，看来这才是真正的故障，应属于内存问题，更换AT89C56后正常西门子变频器电源维修一例故障现象：西门子变频器电源冷机时要等几钟才启动，热机时可即启动。检查分析：此电源用UC3842控制，能启动说明元器件没坏，但很可能性能下降，经测量UC3842电源端电解电容容量变少，换上新的电解电容反复试机正常。欧陆590直流调速器维修一例故障现象：欧陆590直流调速器不能调速。检查分析：经检查+10V电压基准电源为2V左右，-10V电压基准电源为-7V左右，查看有一IC发热很大，更换后-10V电源正常，但+10V电源为+13V，再测量此IC附近有2个贴片电阻烧断，更换后±10电源正常，接上马达试机调速运行正常。东元伺服控制器维修两例故障现象：东元伺服控制器主控板冷机正常，工作一段时间后元显示，但指示灯亮全亮。检查分析：通常冷机正常而热机不正常说明元器件基本正常，但不些器件性能下降所至，可能是电解电容漏电，令5V电源不稳，经查看此机器的出厂日期超过十年，超过十年的电解电容很易失效，换上所有全新的电解电容后反复试机正常。故障：东元伺服控制器显示“AL-15”报警，起动无输出。分析：查资料“AL-15”为过电流（软件）报警，经检查两个电流互感器均正常，试着屏闭智能模块报警输出端亦无效，触发模块能正常导通截止，后找来另一块主板换上，通电显示不正常，起动输出一个方向不稳，另一方向抖动，再检查模块其中一路输入端对电源正端阻值比其它输入端少很多，对应光耦不正常，经检查，确认光耦有问题，更换光耦后正常。伦茨伺服控制器显示过流故障现象：伦茨伺服控制器显示过流.检查分析：通常引起过流有真过流和假过流，真过流的原因有IG坏而形成三相输出与直流母线短路造成过流。第二种情况是三相输出间相间短路而造成过流。第三种情况是触发电路不正常而造成输出不平衡而造成过电流。假过电流的原因有电流互感器坏造成检测错误，有些电路光电耦合器坏引起检测信号不能传递也会显示过流。经测量IG坏，驱动电路的稳压保护二极管已烧坏，换好的元件带负载试机运行正常。PanasonicACServoDriverMSDA083A1ANewinBoxFreeShipASEABROWNBOVERI3BHB002916R010​1USPP3BHB002916R010​1Returns:Acceptedwithin7daysTexasInstruments505-6108TELEMECANIQUETSX-P67-3USPPTSXP673TEXASINSTRUMENTSPLC505-CP1434-TCPUSPP505CP1434TCP(AS01)MSD043A1XPANASONICACSERVODRIVEUSEDWORKINGRELIANCEELECTRIC31C301USPP31C301Returns:Acceptedwithin3daysTEXASINSTRUMENTSPLC7MT-1100USPP7MT1100TEXASINSTRUMENTSPLC505-7510NSPP5057510TEXASINSTRUMENTS505-7012NSFP5057012SHAPEELECTRONICSZ5713NSPPZ5713SYMAX8030-CRM-601USPP8030CRM601PERCEPTRONDIGITAL3TRICAM917-4014LASERDIGITALSURFACESENSORASEABROWNBOVERISDCS-COM-1USPPSDCSCOM1TexasInstruments32Pt24/110OutputMN500-5056SIEMENSTEXASINSTRUMENTS505-4932A``XLNT``FASTSHIPPINGTEXASINSTRUMENTSPLC305-17ADCNSPP30517ADCTexasInstrumentsPM550-210TEL8SS4OpenCassetteACServoZDriver,Panasonic-MSD5​A1A1XX21RHPBEARING7922NSFP7922SENTROL532-093-027USPP532093027PanasonicACServoDriverMDD083A1VVFreeShipNewPerceptronDigital917-4010DigitalSurfaceSensorTexasInstrumentsmodelTI140andTI103TEXASINSTRUMENTSPLC500-5027NSFP5005027TEXASINSTRUMENTSPLC505-6840NSPP5056840ASEABROWNBOVERI3HAC-17484-2/0​0NSPP3HAC17484200(AG01)PANASONICM***A041A1EACSERVOMOTORWORKINGTexasInstruments14SlotRackBase500-5848#23931TEXASINSTRUMENTSPLC305-17ADCNSFP30517ADCTEXASINSTRUMENTS500-2151POWERSUPPLY5002151TexasInstruments505-4616MERLINGERIN168-0342NSFP1680342PANASONICACSERVODRIVEMFDDTB3A2L015.0KWSIEMENSTIPLCOUTPUTBOARD6ES5-453-7LA116ES54537LA11GEFANUC44A398714-G01USPP44A398714G01TEXASINSTRUMENTSPLC5TI-3000USPP5TI3000IRT4020MUSPP4020MASEABROWNBOVERIACS601-0006-5-​000B1200800USPPACS60100065000​B1ASEABROWNBOVERI5716075-PUSPP5716075PASEABROWNBOVERI006539960-KUSPP006539960KSIEMENS6ES5-482-4UA20NSFP6ES54824UA20(AS01)MSD043A1XXVPANASONICACSERVODRIVEUSEDWORKINGGENERALELECTRIC193W-527ABG01USPP193W527ABG01TexasInstruments100-3101ProgrammerTI101-NEWTexasInstruments5TI-1029-1ALLENBRADLEY1772-ME8USPP1772ME8ASEABROWNBOVERI58116076USPP58116076TEXASINSTRUMENTSPLC555-1101NSPP5551101ASEABROWNBOVERI3AFE61001395USPP3AFE61001395ASEABROWNBOVERI3BSE004939R1NSPP3BSE004939R1PanasonicIndustrialACServoMotorM***D042S1V0.4KWRAYTHEONB34120-00-02-1USPPB3412000021PERCEPTRON911-0053USPP9110053REIS101122USPP101122TEXASINSTRUMENTSPLC530C-6202NSFP530C6202ASEABROWNBOVERI067458-005USPP067458005ALLENBRADLEY1756-LSPNSFP1756LSPTEXASINSTRUMENTSPLC500-5027NSFP5005027ExpeditedshippingailableMEASUREX053307-00USPP05330700PanasonicACServoMotorMHMD042G1UNIBFreeShipTexasInstruments2497284PCBDPM550CMU-7KTEXASINSTRUMENTSPLC575-2105USPP5752105BURGMASTER0242109-01ANSFP024210901AALLENBRADLEY8000-MB2NSFP8000MB2TEXASINSTRUMENTSPLC575-4232NSFP5754232TexasInstruments5TI-3000TexasInstruments5TI-2459514TexasInstrumentsOperatorInterfaceCVU100#23892PanasonicACServoDriverMDD103A1VVFreeShipTEXASINSTRUMENTSPLC425DC-CPUUSPP425D***U(AS01)MFA250LB2NLPANASONICACSERVOMOTORUSEDWORKINGTEXASINSTRUMENTSPLC5TI-3000USPP5TI3000TEXASINSTRUMENTSPLC5T1-102-45675-​1USPP5T1102456751TEXASINSTRUMENTSPLC525-1102USPP5251102)