1746-NI4***1746-NI4***日常维护PLC的日常维护和***比较简单，主要是更换丝和锂电池,基本没有其它易损元器件。由于存放用户程序的随机存储器（RAM）、计数器和具有保持功能的辅助继电器等均用锂电池保护，锂电池的寿命大约为5年，当锂电池的电压逐渐降低到一定程度时，PLC基本单元上电池电压跌落到指示灯亮，提示用户注意有锂电池所支持的程序还可保留一周左右，必须更换电池，这是日常维护的主要内容。调换锂电池的步骤为：■在拆装前，应先让PLC通电15秒以上（这样可使作为存储器备用电源的电容器充电，在锂电池断开后，该电容可对PLC做短暂供电，以保护RAM中的信息不丢失）；■断开PLC的交流电源；■打开基本单元的电池盖板；■取下旧电池，装上新电池；■盖上电池盖板。注意更换电池时间要尽量短，一般不允许超过3分钟。如果时间过长，RAM中的程序将消失。此外,应注意更换丝时要采用型号的产品。I/O模块的更换若需替换一个模块，用户应确认被安装的模块是同类型。有些I/O系统允许带电更换模块，而有些则需切断电源。若替换后可解决问题，但在一相对较短时间后又发生故障，那么用户应检查能产生电压的***负载，也许需要从外部其电流尖峰。如果丝在更换后易被烧断，则有可能是模块的输出电流超限，或输出设备被短路。PLC的故障诊断是一个十分重要的问题，是保证PLC控制系统正常、可靠运行的关键。本文对常用的故障诊断方法进行了探讨。在实际工作过程中，应充分考虑到对PLC的各种不利因素，定期进行检查和日常维护，以保证PLC控制系统安全、可靠地运行。16ftcamerajibcranewtripodstandservomotorpantiltheadfr***panasonicASEABROWNBOVERIS4HQ100BRRAS4NSFPS4HQ100BRRAS4TEXASINSTRUMENTSPLC500-2102NSPP5002102ASEABROWNBOVERIACS201-2P7-3-0​0-10USPPACS2012P730010HITACHILINK-SHNSPPLINKSH***ARTEKT-BOXUSPPTBOXASEABROWNBOVERI1912RA00110000​0STDUSPP1912RA00110000​0SYASKAWAELECTRICCACR-SR10BY1SS​Y9USPPCACRSR10BY1SSY​9OnePanasonicServoDriverMADDT1207FreeShipWorldwideMATTEC561-1032AUSPP5611032APanasonicACServoMotor***152A1C1.5kWwithPlugsTEXASINSTRUMENTSPLC140-1111USPP1401111USEDPerceptron96KDSPFrameGrabber495-0117-03WEGUSCFW090016T38​48ESZNSFPUSCFW090016T38​48TexasInstruments500-5007TexasInstrumentsProgrammableControllerTI140ASEABROWNBOVERIYT204001-AAUSPPYT204001AAPanasonicMUDS5A5A1AACSERVODRIVEMUDS5A5A1A50W200ASEABROWNBOVERIYPQ-101EUSPPYPQ101EYASKAWAELECTRICJANCD-SV03BNSPPJANCDSV03BMOOG152D423USPP152D423ALLENBRADLEY1756-EN2TRNSFP1756EN2TR505-CP1434TFTexasInstrumentsSiemensTI505CP1434TF545-1101TexasInstrumentsSimaticPLCTI545TI5451101N300TEXASINSTRUMENTSPLCPM550-210USPPPM550210BAYSIDERS115-100USPPRS115100KRONES2-098-82-140-0​/V0USPP2098821400V0SIEMENS6ES5-535-3MA12USPP6ES55353MA12ASEABROWNBOVERI3E-032176USPP3E032176ASEABROWNBOVERI57360001-K/9USPP57360001K9TERAOKATPB-1770-2USPPTPB17702ASEABROWNBOVERIOESA-630D6PLUSPPOESA630D6PLTexasInstrumentsmodelPM550-212P/N2461375-0001TEXASINSTRUMENTSPLC505-5417NSPP5055417ORMECSACS19E/101BUSPPSACS19E101BPANASONICMDM402D2CACSERVOMOTORWITHENCORDERTEXASINSTRUMENTSPLC2490019-0001USPP24900190001ITESIEMENSHF463JNSFPHF463JTexasInstruments5TI-1029-1PanasonicLenze***MA40GBK4W1501229/1***GA10BServoMotor3Phase220V50HzASEABROWNBOVERIDSCA-190VUSPPDSCA190VTEXASINSTRUMENTSPLCPM550-416USPPPM550416ASEABROWNBOVERIYT204001-BPUSPPYT204001BPGEFANUCIC600LX612NSFPIC600LX612TISiemensCTi500-50195005019WordOutputPLCINDRAMATDDS2.1-A150-DUSPPDDS21A150DASEABROWNBOVERIACH501-050-4-0​0P2USPPACH501050400P2PERCEPTRON515-0076ENCODERMOTORCABLEMODULEMODICON171-CCC-980-30FNFP171CCC98030ASEABROWNBOVERI3HAC-17484-2/0​0NSPP3HAC17484200TexasInstruments5TI-3100TEXASINSTRUMENTSPLC505-5518USPP5055518SAJF//PANASONICMDDDT5540L01ACSERVOUSEDTEXASINSTRUMENTSPLC500-5019USPP5005019TEXASINSTRUMENTSPLC505-4232USPP5054232PERCEPTRONCAMERATRICAMSURFACESENSOR912-0007SIEMENS17FSF92BF-1351NSFP17FSF92BF1351TEXASINSTRUMENTSPLC530-1108USPP5301108KEYENCECORPVG-035NSFPVG035WESTINGHOUSE289B932A18USPP289B932A18NATIONALPANASONICACSERVODRIVEDV-48S020LB0BDV48STEXASINSTRUMENTSPLC505-7002NSPP5057002PanasonicServoDriverMCDHT3520ENewinBoxFreeShipTEXASINSTRUMENTSPLC2490005-0001USPP24900050001TEXASINSTRUMENTSPLC505-4616ANSPP5054616AGENERALELECTRICDS3800HSCC1DUSPPDS3800HSCC1DPanasonicM***A042A3CACServoMotorNIBINDRAMATMAC090A-0-RD-3​-D/110-A-0-S00​1USPPMAC090A0RD3D11​0AASEABROWNBOVERIYB161102-BUNSPPYB161102BUTEXASINSTRUMENTS500-5848RACKI/O14MODULEBASEASSY.NO.2491573-0001TEXASINSTRUMENTSPLC505-CP2572NSPP505CP2572ASEABROWNBOVERIOETL-NF600A-2S​WNSFPOETLNF600A2SW)