6SE6120-0FE00控制器6SE6120-0FE00控制器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。LENZEBFK458-25ENSFPBFK45825ETEXASINSTRUMENTSPLC505-6870USPP5056870ASEABROWNBOVERIDSQC-239USPPDSQC239SIEMENS6RA2203-8DK27-​1NSFP6RA22038DK271ASEABROWNBOVERIGJR-513-2100-R​0-002NSFPGJR5132100R000​2PanasonicM***042A2UEACServoMotorASEABROWNBOVERIPCU-03USPPPCU03ASEABROWNBOVERIYB560103-CD/24USPPYB560103CD24TEXASINSTRUMENTSPLC120-1111USPP1201111SimaticTI330DirectLogicPLCcompleteWithprogrammerALLENBRADLEY809-A21EUSPP809A21ETEXASINSTRUMENTSPLC500-5021NSFP5005021PanasonicMQDA023D1A33ACServoDriveASEABROWNBOVERI57777290USPP57777290ASEABROWNBOVERI086362-001NSFP086362001GOSSWH715214-HNSPPWH715214HASEABROWNBOVERINF457-NSFPNF457SAJF//PANASONICMSD043A1XXVM***042A1ESCSERVODRIVERSCSERVOMOTORUSEDCONTROLTECHNIQUES75DSA300HAAAANSFP75DSA300HAAAATEXASINSTRUMENTSPLC305-8ADCUSPP3058ADCTEXASINSTRUMENTSPLC505-7028AUSPP5057028ATEXASINSTRUMENTSPLC305-01ABNSFP30501ABPanasonicACServoMotorMHMD082P1C750WFreeShipOnePanasonicACServoDriverMSDA083D1A750WFreeShipGENERALELECTRIC193X377AAG01USPP193X377AAG01PROCESSCONTROLCORPC1247USPPC1247TEXASINSTRUMENTS500-2108*NEWNOBOX*TEXASINSTRUMENTSPLC505-4132NSFP5054132RELIANCEELECTRICS-12011-1TUSPPS120111TTexasInstrumentsTI500-2114RemoteBaseControllerASEABROWNBOVERI29089124USPP29089124ADEPTTECH100USPP100PERCEPTRONTRICAMCONTOURSENSOR9163073TEXASINSTRUMENTS464718-1EJECTORDRIVERASSY464718TEXASINSTRUMENTSPLCU-03RMNSFPU03RMSTIMS4344BUSPPMS4344BEDISONCONTROLS1010617-B400-A​3.0NSFP1010617B400A30TEXASINSTRUMENTSPLC560-2134USPP5602134ASEABROWNBOVERIEH250-36VDC-TNSPPEH25036VDCTPANASONICMSDA5A3A1AACSERVODRIVERNEWPanasonicACServoMotorM***A082A3SFreeShipGENERALELECTRICDS3800DOAAUSPPDS3800DOAAUSEDPerceptron911-0008TricamContourSensorRev.RNEWPERCEPTRON495-0191FRAMEGRABBERPROCESSOR500-0192REVB96KDSPSTEBONSDT-853-500-54​-N1623NSFPSDT85350054N16​23ASEABROWNBOVERIYT212001-AGUSPPYT212001AGDEMAG502001USPP502001TEXASINSTRUMENTSPLC140-1112NSFP1401112EMCO301-MUSPP301MTEXASINSTRUMENTSPLC500-5010NSFP5005010ASEABROWNBOVERIRVS-6-100/120VNSFPRVS6100120VASEABROWNBOVERIYT212001-ABUSPPYT212001ABTexasInstruments5TISequencer5TI-1013moduleTEXASINSTRUMENTS500-5047-A**TEXASINSTRUMENTSPLC560-2123USPP5602123MITSUBISHIFR-A540-3.7K-N​AUSPPFRA54037KNAASEABROWNBOVERIPSS105/181-500​FNSFPPSS105181500FTEXASINSTRUMENTSPLC500-5892USPP5005892(AB01)ACSERVOMOTORPANASONICMATSUSHITAELECTRICM***Z042B1EWORKINGASEABROWNBOVERI3BHB002916R010​1USPP3BHB002916R010​1SAJF//PANASONICM***D012P1TACSERVOMOTORUSEDPanasonicACServoDriverMSD083A1XGFreeShipASEABROWNBOVERIPP07512HSFNFPPP07512HSASEABROWNBOVERI58096652USPP58096652GEFANUCIC3600QSPA252B​122BUSPPIC3600QSPA252B​1ATEXASINSTRUMENTS2461452**ASEABROWNBOVERI3HAB2242-1USPP3HAB22421TEXASINSTRUMENTSPLC164-1112USPP1641112PULSECONTROLBOARDPanasonicACServoDriverMSDA3A5A1PanasonicServoMotorAMKA100B10LAK100WwithGearTexasInstruments505-7354MODULENETWORKI/F505PEERLINK2LL,5057354)