1790-0B16X输出模块;1790-0B16X输出模块;1790-0B16X输出模块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。SIEMENS6ES5-926-3SA11USPP6ES59263SA11ASEABROWNBOVERI57275707NSPP57275707TEXASINSTRUMENTSPLC555-1101USPP5551101PanasonicACServoMotorM***A102P1GFreeShipPanasonicACServoDriverMDD103A1VVFreeShipJOHNSONCONTROLSNU-NCM200-0USPPNUNCM2000ASEABROWNBOVERI086369-001USPP086369001PILZ301060NSFP301060ASEABROWNBOVERI58116076USPP58116076ASEABROWNBOVERI48990001-FEUSPP48990001FETEXASINSTRUMENTSPLC530C-6202NSFP530C6202OMRONAMD-SL1AC100/1​10USPPAMDSL1AC100110GENERALELECTRICDS3800HXPA1B1AUSPPDS3800HXPA1B1ASIEMENS/TI/TEX​ASINSTRUMENTS500-2109CONTROLLER**NI​B**TexasInstruments530C-1104SIEMENSTIPLCOUTPUTBOARD6ES5-453-7LA116ES54537LA11ALLENBRADLEY1784-PCMK/BUSPP1784PCMKBASEABROWNBOVERIEH800-C1USPPEH800C1BARDEHWH24A-C06NSPPEHWH24AC06PanasonicMGMA092A1GACSERVOMOTORFreeShipKOLLMORGENINDBDS4A-203J-000​1-104A21PUSPPBDS4A203J00011​01PerceptronProcessorBoard495-0191FrameGrabber29400TexasInstruments305-OPTOPanasonicACServoMotorMAMR042R1A1NewinBoxFreeShipASEABROWNBOVERIEH450C-32VDC-TNSFPEH450C32VDCTTEXASINSTRUMENTSPLC560-2128USPP5602128TEXASINSTRUMENTS500-5037-A**TEXASINSTRUMENTSPLC505-5417NSPP5055417TEXASINSTRUMENTSPLC435-DC-CPUNSPP435D***UALLENBRADLEY1784-KTCNSFP1784KTCASEABROWNBOVERI52700230USPP52700230PANASONICSERVOMOTORM***022Q8VTexasInstrumentsPM550-416LoopAccessModuleTexasInstruments500-5053BasicModule#7334ASEABROWNBOVERI3BSE018157R1USPP3BSE018157R1ASEABROWNBOVERIGNT0137111P000​2USPPGNT0137111P000​2ASEABROWNBOVERI1923RA00140000​0STDUSPP1923RA00140000​0SMODICONAS-B984-101USPPASB984101PanasonicACServodriveADKF50B5VD-200​W,100W,50W(J)TEXASINSTRUMENTSPLC565-2820NSFP5652820FISHERROSEMOUNTDC6554X1-DA1USPPDC6554X1DA1TISiemensCTi500-2151-A5002151PowerSupply2151APLCPanasonicMSD023A1XXKACServoDriverFISHERROSEMOUNT3095-FH24ABA11​AA1100ANSPP3095FH24ABA11A​A1OMRONCV500-MC221USPPCV500MC221COMPUMOTOR6K2-NKUSPP6K2NKASEABROWNBOVERI8R37-1041-31-3​101USPP8R371041313101PanasonicACServoMotorMHMD042P1UNewinBoxFreeShipTEXASINSTRUMENTSPLC2458740-1USPP24587401TEXASINSTRUMENTSPLC545-1102USPP5451102SANYODENKIRS1L03AZ082USPPRS1L03AZ082TexasInstrument560-2128TEXASINSTRUMENTSPLC45AF9106000169USPP45AF9106000169WESTINGHOUSE15RBA4-PNMUSPP15RBA4PNMASEABROWNBOVERIAPTBK-02USPPAPTBK02TEXASINSTRUMENTSPLC3RW2-E045NSFP3RW2E045ASEABROWNBOVERI5730030-DNUSPP5730030DNTexasInstrumentsSINECH1505-CP1434TFTEXASINSTRUMENTSPLC305-01ZNSFP30501ZReturns:Acceptedwithin7daysASEABROWNBOVERI57772158NSPP57772158ASEABROWNBOVERIYT204001-JFUSPPYT204001JFTexasInstrumentsPLC315-DRDCInRelayOutNEWTEXASINSTRUMENTS500-5011OUTPUTMODULE2AMP120VAC8POINT5005011CUTLERHAMMERS20K11S10NUSPPS20K11S10NASEABROWNBOVERID***B-137USPPd***b137TEXASINSTRUMENTSPLC500-5022NSFP500502216ftcamerajibcranewtripodstandservomotorpantiltheadfr***panasonicTEXASINSTRUMENTSPLCPFS-3611USPPPFS3611TEXASINSTRUMENTSPLC435-DC-CPUNSFP435D***USTIMS4344BRUSPPMS4344BROnePanasonicServoDriverMBDDT2210N01FreeShipNACHI/PANASONI​CMQM082Q9ACSERVOMOTOR3000RPM***NIB***ASEABROWNBOVERIYB161102-BKUSPPYB161102BKASEABROWNBOVERIACS601-0009-5-​000B1200000USPPACS60100095000​B2505-3532TexasInstrumentsSiemensTI5053532N22TexasInstrumentsPM550-210SIEMENS6SE6-400-4BD24​-0FA0NSFP6SE64004BD240F​A0)