文档介绍：QuestionsOfPLCsUsingPLCisonekindofusesintheindustrialproductionautomationcontrolequipment,generallydoesnotneedtotakeanymeasure,,althoughithasthereliabilitywhichlikeonstateshigh,antijammingabilitystronger,butworksasproductionenvironmentistoobad,icinterferencespeciallyintense,orinstallsusesisimproper,possiblycreatestheprogramerrorortheoperationmistake,thusproducesinputsbymistakeandcausesoutputsbymistake,thiswillbeabletocreatetheequipmentoutofcontrolandthedisoperation,thuswillnotbeabletoguaranteePLCthenormaloperation,ontrolsystemreliability,ontheonehandwillrequestPLCtoproducethefactorytoenhancetheequipmenttheantijammingability;ontheotherhand,intherequestdesign,theinstallmentandtheusemaintenancecausehighlytakes,coordinatestobeableineverywaytoconsummatesolvestheproblem,effectivelystrengthensthesystemtheresistancetointerference・Belowthereforeshouldpayattentiontothequestionintheuse:WorkingconditionsThetemperaturePLCrequestambienttemperaturewhen0〜55°C,apacitybigpart,,theairrelativehumidityshouldbesmallerthan85%(nottocongealdew).ThevibrationWeshouldcausePLCtobefarawaytheintensevibrationsource,preventedthevibrationfrequencyis10〜,musttaketheabsorptionofshockmeasure,,forexampleHydrogenchloride,,.,mayinstallabeltshieldleveltheinsulatingtransformer,andreducesbetweentheequipmentandtheplacedisturbance・GeneralPLCallhasthedirectcurrent24Voutputtoprovidetotheinputend,whenoutsidetheinputendusemeetsthedirect-currentpowersup