IC694MDL654模块IC694MDL654模块日常维护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。TEXASINSTRUMENTSPLC500-5892USPP5005892NACHIUSADED-37-F3USPPUSADED37F3ASEABROWNBOVERIACH501-040-4-0​0P2USPPACH501040400P2PERCEPTRONTRICAMCONTOURSENSOR9163073BASLERELECTRICBE1-25/79TRNSFPBE12579TRGETTYS120-166-005NSFP120166005ALLENBRADLEY1336-B003-EAD-​FA2-L1USPP1336B003EADFA2​L1PanasonicM***042A2UEACServoMotorARO93970838USPP93970838KOLLMORGENINDBDS4A-203J-000​1-202B21PUSPPBDS4A203J00012​0A(AG01)PANASONICMQMZ022A1FACSERVOMOTORABLEVRKF-15C-200-ZWORKINGTexasInstruments5TI-4000TEXASINSTRUMENTSPLC140-1111USPP1401111TexasInstrumentsPM550-400TEXASINSTRUMENTSPLC505-4532NSPP5054532TEXASINSTRUMENTSPLCVPU-200-3104USPPVPU2003104TEXASINSTRUMENTSPLC505-4332NSPP5054332ASEABROWNBOVERIOES400J3NSFPOES400J3STR-410TTexasinstrumentsTILoaderSTR410TD-282MITSUBISHISJ-4-V7.5-11TNSFPSJ4V7511TBANNERENGINEERINGP4O1.3IUSPPP4O13IPERCEPTRON912-0011USPP9120011KOLLMORGENINDM-605-B-B3USPPM605BB3ALLENBRADLEY8000-MDBUSPP8000MDBASEABROWNBOVERIYPQ-110AUSPPYPQ110APERCEPTRON916-4018DIGITALCONTOURSENSORREFURBEDTexasInstrument500-4010loopaccessmoduleTexasInstruments500-5019(AG01)PANASONICM***021ABFACSERVOMOTORWORKINGTEXASINSTRUMENTSPLC5TI-1032-1USPP5TI10321Panasonic2.5kWACServoMotorM***252A3JFreeShipASEABROWNBOVERIDSSR-110USPPDSSR110M***A042A1GPanasonicACServoMotorNewinBoxFreeShipTEXASINSTRUMENTSPLC505-2556USPP5052556EMERSONT-60USPPT60CORCOM160ADT6SUSPP160ADT6STEXASINSTRUMENTSPLC500-5884NSPP5005884GENERALELECTRICDS3800HMPAUSPPDS3800HMPATEXASINSTRUMENTSDIGITALOUTPUTUNITMODEL#500-5013!TEXASINSTRUMENTSPLC140-1112NSFP1401112ASEABROWNBOVERIACS501-007-4-0​0P2USPPACS501007400P2TEXASINSTRUMENTSPLC505-7190NSFP5057190PanasonicACServoMotorM***021A1BXw/60daywarrantyTEXASINSTRUMENTSPLC128-1114NSFP1281114TexasInstruments500-2101PanasonicMSD5A1P1EACServoDriverFreeShipKEBCOMBIVERTFT011239AUSPPFT011239APerceptron917-3046DigitalSurfaceMinicamREVAASEABROWNBOVERIEH260C-1USPPEH260C1SICKOPTICELECTRONICCLV-295-0012USPPCLV2950012TEXASINSTRUMENTSPLC560-2127USPP5602127NewPanasonic/NaisServoM***D042P1U+MBD​​DT2210SPECTRUMCONTROLS1746SC-INO4VINSPP1746SCINO4VITEXASINSTRUMENTSPLC505-2510USPP5052510GOODTEXASINSTRUMENTSCIRCUITBOARD2497290PWB2497289-000​1ASEABROWNBOVERIDSQC-239USPPDSQC239MOOG152D423USPP152D423ASEABROWNBOVERIYB560103-CHUSPPYB560103CHTEXASINSTRUMENTSPLC505-CP1434-TCPUSPP505CP1434TCPTEXASINSTRUMENTSPLC560-2126BUSPP5602126BASEABROWNBOVERIDKH-E2601NSFPDKHE2601500-2109TexasInstrumentsTIDistributedBaseController5002109N742TEXASINSTRUMENTSPLC560-2136USPP5602136ALLENBRADLEY1771-E2CNSPP1771E2CSIEMENS6AU1-121-3CA00​-1AA0NSFP6AU11213CA001A​A0ALLENBRADLEY1746-QVFNFP1746QVNEWPERCEPTRON495-0191PCBOARDFRAMEGRABBER4950191TEXASINSTRUMENTSPLCMTUSPPMTTEXASINSTRUMENTSPLC500-5606NSPP5005606TEXASINSTRUMENTSPLC505-7101NSPP5057101ITESIEMENSHF463JNSFPHF463JTexasInstruments46191PCBoard)