FIREYEMBPF-200S全新***，现货销售，欢迎来电咨询在变频器不断发展的今天变频器驱动电路技术也是日新月异。驱动电路只是一个统称，其本身也经历了从插脚式元件的驱动电路到光耦驱动电路，再到厚膜驱动电路，以及比较新的集成驱动电路。一台变频器的好坏，驱动电路起着至关重要的作用。1、驱动电路损坏的原因及检查造成驱动损坏的原因是各种各样的，一般来说，出现的问题也无非是U、V、W三相无输出或输出不平衡，或输出平衡但是在低频时抖动，还有启动报警等。当一台变频器大电容后的快速熔断器断开，或者是IGBT逆变模块损坏的情况下，驱动电路基本都不可能完好无损，切不可换上好的快速熔断器或IGBT逆变模块，这样很容易造成刚换上的新器件再次损坏。这时应该着重检查驱动电路上是否有打火的印记，可以先将IGBT逆变模块的驱动脚连线拔掉，用万用表电阻挡测量六路驱动是否阻值都相同（但是极个别的变频器驱动电路不是六路阻值都相同的，如三菱、富士等变频器）。如果六路阻值都基本相同也不能完全证明驱动电路是完好的，接着需要使用电子示波器测量六路驱动电路上电压是否相同。当给定一个起动信号时六路驱动电路的波形是否一致，如果没有电子示波器，也可以尝试使用数字式电子万用表来测量驱动电路六路的直流电压。一般来说，未起动时的每路驱动电路上的直流电压约为10V，起动后的直流电压为2-3V，如果测量结果一切正常的话，基本可以判断此变频器的驱动电路是好的。接着就将IGBT逆变模块连接到驱动电路上，但是记住在没有100%把握的情况下，***稳妥的方法还是将IGBT逆变模块的P从直流母线上断开，中间串联一组灯泡或一个功率大一点的电阻，这样能在电路出现大电流的情况下，保护IGBT逆变模块不被大电容的放电电流烧坏。2、变频器驱动电路维修实例⑴富士G9变频器故障现象为上电无显示。估计可能是变频器开关电源损坏，打开变频器检查开关电源线路，但经检查，开关电源器件线路都无损坏，直流电压也无显示，这时要估计到可能是驱动问题。将驱动电路的所有电容拆下，发现有个别电容漏液，更换新的电解电容器，再次上电后正常工作。⑵台达变频器故障现象是变频器输出端打火，拆开检查后发现IGBT逆变模块击穿，驱动电路印制电路板严重损坏。正确的解决办法是先将损坏IGBT逆变模块拆下，拆的时候主要应尽量保护好印制电路板不受人为二次损坏。将驱动电路上损坏的电子元器件逐一更换，将印制电路板上开路的线路用导线连起来（这里要注意要将烧毁的部分刮干净，以防再次打火）。在六路驱动电路阻值相同、电压相同的情况下使用示波器测量波形，但变频器一开就报OCC故障（台达变频器无IGBT逆变模块，开机会报警）使用灯泡将模块的P1和印制板连起来。其他的用导线连，再次起动还报OCC，确定为驱动电路还有问题；逐一更换光耦合器，后发现该驱动电路的光耦合器带检测功能，其中一路光耦合器检测功能损坏，更换新的后，起动正常。NewA***830106294CableExtension5.5mtoFMKSatelliteNewA***16-007110B28BagShippingP8300AFENewA***16-401207-01ClampGaslineReactor2PONewA***16-195888-01ClampBackThermalNewA***16-195887-01Clamp-FR-ThermalSWNewA***1018-287-01AssemblyCableVLVA***1051-409-01ASSY-BASEVESSELMOUNTINGA***1046-623-01ASSEMBLY-CABLEEMERALDHTRCTRLXDCRDCOUTA***1046-624-01ASSY-CAEMERALDHTRCTRLSIGNALTOMONA***51-115829A28GLANDMINIVCRTBWTI.250TUBESwagelokTI-4-VCR-3S-4TB?2NewA***02-195848-01AssemblyCable-TB5-E1.2NewA***02-195847-01AssemblyCable-TB5-E1.1NewA***02-195849-01AssemblyCable-TB5-E1.3Rev.DNewA***16-195911-01PLTCircuitBreakerID-EMNewA***16-400699-01BracketConnectorsHeaterSHRev.BNewA***68-125277A02LatchCompressionPadlockingRightHandNewA***68-125277A04LatchCompressionPadlockingLeftHandNewA***16-144176-01QuartzTubeNewA***1040-882-01AssemblyCableReactorPlateTONewA***830106308CableExtension3mtoFMKNewA***16-326627B08DamperLargeCenter.016StepNewA***16-326627B10DamperCenterwith.200StepA***1069-283-01Plate-ValveMounting***XA***1009-419-01FLANGE-SEALINGLOWERHEATERNewA***02-325138C01AssemblyFilterA***16-193524-01LINE-OW-2-LEFTHIG-P3NewA***1012-836-01BoltLifterTopALD6HiLiftNewA***1055-780-01SensorInductiveSSTBarrel3wireNewA***16-193314-01BracketMTGPowerSupplyA***1046-624-01ASSEMBLY-CABLEEMERALDHTRCTRLSIGNALMONA***93-123870A03HEADGEARFRAMEASSEMBLYNewA***04-351013-01KitPaddlePinsVespel/VespelNewA***16-195980-01BracketCatchSHDHoistNewA***02-196603-01AssemblyCableReactorPLTtoSSNewA***16-351195B01QuartzA***1020-297-01LINEGASOWARGONFEED4WAYF/F/M/MNewA***16-403307-01PlateShuttle125mm-150mmNewA***02-194598-01AssemblyPadlockLOTONewA***75-119073A28RailSupport1200mmNewA***16-350119B01QuartzA***1020-297-01AITLINE-GASOWARGONFEED4WAYF/F/M/MA***20-351547D01TOOL-LASERADJUSTMENTA***16-192748-01EDWA***INA-REFLECTOR-U?PPERHEATERREMOVESSTNewA***04-321308A01KitGateValveGasketSetA***54-123388A11OMRONCONTROLLER-DEVI?CNET,16PNPDO'S,DSUBA***1049-605-01FITERINLINEM/F1/4VCR71.1MMLONGPALGLFN1100VMF4A***1049-605-01/PallGLFN1100VMF4FILTER-INLINEM/F1/4VCR71.1MMLONGNewA***16-404226-01LineOWNitrogenBallastNewA***830106294CableExtension5.5mtoFMKSatelliteNewA***16-007110B28BagShippingP8300AFENewA***16-401207-01ClampGaslineReactor2PONewA***16-195888-01ClampBackThermalNewA***16-195887-01Clamp-FR-ThermalSWNewA***1018-287-01AssemblyCableVLVA***1051-409-01ASSY-BASEVESSELMOUNTINGA***1046-623-01ASSEMBLY-CABLEEMERALDHTRCTRLXDCRDCOUTA***1046-624-01ASSY-CAEMERALDHTRCTRLSIGNALTOMONA***51-115829A28GLANDMINIVCRTBWTI.250TUBESwagelokTI-4-VCR-3S-4TB?2NewA***02-195848-01AssemblyCable-TB5-E1.2NewA***02-195847-01AssemblyCable-TB5-E1.1NewA***02-195849-01AssemblyCable-TB5-E1.3Rev.DNewA***16-195911-01PLTCircuitBreakerID-EMNewA***16-400699-01BracketConnectorsHeaterSHRev.BNewA***68-125277A02LatchCompressionPadlockingRightHandNewA***68-125277A04LatchCompressionPadlockingLeftHandNewA***16-144176-01QuartzTubeNewA***1040-882-01AssemblyCableReactorPlateTONewA***830106308CableExtension3mtoFMKNewA***16-326627B08DamperLargeCenter.016StepNewA***16-326627B10DamperCenterwith.200StepA***1069-283-01Plate-ValveMounting***XA***1009-419-01FLANGE-SEALINGLOWERHEATERNewA***02-325138C01AssemblyFilterA***16-193524-01LINE-OW-2-LEFTHIG-P3NewA***1012-836-01BoltLifterTopALD6HiLiftNewA***1055-780-01SensorInductiveSSTBarrel3wireNewA***16-193314-01BracketMTGPowerSupplyA***1046-624-01ASSEMBLY-CABLEEMERALDHTRCTRLSIGNALMONA***93-123870A03HEADGEARFRAMEASSEMBLYNewA***04-351013-01KitPaddlePinsVespel/VespelNewA***16-195980-01BracketCatchSHDHoistNewA***02-196603-01AssemblyCableReactorPLTtoSSNewA***16-351195B01QuartzA***1020-297-01LINEGASOWARGONFEED4WAYF/F/M/MNewA***16-403307-01PlateShuttle125mm-150mmNewA***02-194598-01AssemblyPadlockLOTONewA***75-119073A28RailSupport1200mmNewA***16-350119B01QuartzA***1020-297-01AITLINE-GASOWARGONFEED4WAYF/F/M/MA***20-35154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