1、1TheapplicationofPLCtechniqueinthecontrolofmarineboilersProgrammableforewordcontroller/IscalledPCorPLC/ItappearscausesthecontroldomainfacedwithatechnicaltransformationTaketherelayasthefoundationengineroomcontroldevicestructurecomplex/thecomponentaremany/Thereliabilityisbad/Thebreakdownsometimesoccur
2、sThecurrentourcountryshipsusetheimportcompletesetcontroldevice/Itsfunctionconsummates/Thereliabilityisalsohigh/ButthepriceisexpensiveNumberyearago/IuseimportPLCamthecontroller/Owndesignthehardware/Establishmentcontrolprocedure/DevelopssuccessfullythePC-GCprogrammableboilercombustioncontrolinstallmen
3、t/SubstitutesfortheEnglishHAMWORTHYCorporationproductInthenearfuturethesimilarproductwillcomparewiththiscompany/Performancequite/Thepriceonlyisits12/513/4year/AltogetherhasPC-GCtoinstall12setsinDazing414andsoon6Stripoiltankersolidshipuse/ExperiencestheSouthChinaSeastormandthenearly70hightemperaturea
4、dversecircumstancetests/Movesgood/DoesnothaveabreakdownTheexperienceindicated/Introducestheminorityessentialcomponent/Accordingtoconcretecontrolsystemrequest/Designstheappropriatesoftwareandthenecessaryhardware/Istheshipstechnologicaltransformationsandtheequipmentdispositiongoodmeans1systemcompositi
5、onThesystemiscomposedbybelowseveralparts/ProgrammableforewordcontrollerPC；PowersourcePS；ExaminationunitCooperationunitOB；ActuationunitM；DisplaymonitorIB；AuxiliaryrelayunitJB；LinebankL/Likechart1showsThefirstsixpartsarethecontroldevicebasiccompositionThisinstallmentadditionallybuildsauxiliaryrelayuni
6、tJBincludingfour8portsintermediaterelayJ1/J2/J3andJ4and12portslightcontrolsrelayJGC/Whenthecontrolleroutputmustactuatethehigh-powerload/NeedstocarryonthevoltageorthepowerconversionthroughtheintermediaterelayTheintermediaterelaybesidescompletesthehostwhichitundertakestocontrolthefunction/Alsoprovides
7、manyvice-auxiliaryports/Mayusefortheinterconnectionrelatedequipmentorputthroughtheconditionindicatinglamp/DoesthismaysavethehosttocontroltheunitthehardwareresourcesAfterestablishmentlinebank/Thepowersource/thePCboard/examinethecomponent/carriesoutthecomponent/operatesthebutton/thedisplaylampandsoont
8、hecompletecontactalllinkstothelinebankplugin/Thisfortheequipmentsetup/theserviceandthesearchbreakdownhasprovidedtheconvenienceSystemeachpart2ofcompositionsandconnection。2Systemscontrolsrequest2/1Burningmanagementcontrol(1)FueloilchoiceThefuelmaychoosetheheavyoilorthelightoilIfchoiceheavyoil/Theoilte
9、mperaturemustin80above/ThesidecancarryonburningTheoiltemperatureislowerthan80/Thenblowing-out/Andthestartheatsuptheinstallmenttoheatuptotheheavyoil(2)CombustioncontrolAccordingtothestart/frontsweepsthegas/theignition/opensthe#1sprayhole/opensthe#2sprayholetheordertostartboilerburning；Afterclosesthe#
10、2sprayhole/closestheorderblowing-outwhichthe#1sprayhole/sweepswasmad(3)SteampressureintermittentcontrolAccordingtoboilersteampressurepANDgatelimitingvaluep1(0/7MPa/p2(approximately0/6MPa)controlstwosprayholesapproximately)theworkWhenpp1/#1/the#2sprayholecloses；Whenp1pp2/The#1sprayholealoneworks；When
11、p2p/#1/the#2sprayholeopens。(4)Boilerwatermonitortheboilerwaterlevelusesthepairofpositioncontrolmode/whichknewverywell/Therefore/doesnotgiverelatesindetail2/2Interconnectionprotections(1)SteamoverpressureinterconnectionThesteampressurearrivesreportstothepolicethresholdvaluep0(approximatelytime0/72MPa
12、)/Sendsoutthesteamoverpressurethewarning/Blowing-out/Andshutsofftheloadpowersource/Stopstoallexecutionscomponentpowersupply(2)TheboilerwaterlevelreportstothepoliceTheestablishmenthighreportstothepolicethewaterlevelandthelowestdangerwarningwaterlevelWhencontrolsmalfunctions/Thewaterlevelsurpassesrepo
13、rtstothepolicethewaterlevel/Thensendsoutthehighwatermarktoreporttothepolice/AndshutsoffthefeedpumpelectricmotorpowersourceWhenthewaterlevelislowerthanthedangerwarningwaterlevel/Thensendsoutthelowwaterleveltoreporttothepolice/Boilerblowing-out。(3)Theemergencyblowing-outprotectsWhenthecollectioncontro
14、lsTaiwantohavetheblowing-outtoorder/Thensendsouttheemergencyblowing-outthewarning/Boilerblowing-out(4)HeavyoiltemperaturecontrolinterconnectionWhenchoiceheavyoil/Theoiltemperatureishigherthan80procedurestobeabletomoveTheoiltemperature3lowlyislowerthanthisvalue/Sendsoutthewarning/Boilerblowing-out(5)
15、FlamesurveillanceunusualinterconnectionWhenappearstheignitiondefeat/themidwayflameoutortheburningconditionworsening/Sendsouttheflamesurveillancetobeunusualthewarning/Boilerblowing-out(6)Manual/automaticoperationinterconnectiononlywhencutstheswitchtosetmanually(isautomatic)theposition/onlythenallowsc
16、arriesonmanually(isautomatic)alloperations(7)The#1sprayholedoesnotwork/Ortheairthrottlehasnotstartedinabigway/The#2sprayholedoesnotworkandsoon3HardwaredesignsThehardwaredesignmainlyrevolvesthesystemthereliabilityandtheconsummationitsfunctiontwogoalcarrieson3/1PCshapingTheprogrammableforewordcontroll
17、eruses/theexcellentcraftmanufactureadvanced/itsreliabilityisthegenerallaborcontrolsthemicrocomputer46todouble/ThereforeshouldstressfromthecontrolfunctionanglechoosesPC/Regardingthesingleplane/themediumscale/useinguaranteeingtheboilersafeoperationtheautomaticcontrolsystem/Toconservesenergythegoaltobe
18、possiblenottoconsider/ThereforedoesnotneedthePIDcontrolfunctionSuchsystembyconditioncontrol/sequentialcontrolprimarily/Bytheswitchquantitylogicoperation/thetime/countsisinthemajority/Toaspecttheandsooncomponentrunningrateperformancedoesnothavethespecialrequest/Thereforemayactaccordingtotheproceduret
19、oneedthecapacity(IOportnumberandmemorysize)makesthePCshapingThestoragecapacity(procedurestep)may)*(IO)maketheestimateaccordingtoempiricalformulaQ=610/Iftheuserprogramisnotbig/SavesTheaccumulatorcapacitydemandiseasytosatisfyThissystemaltogethermustinputtheport/outputporteach14(ifincreaseboilerwatermo
20、nitorfunction/Mustagainincreasetheinput/outputporteach4)/ThereforeusesMitsubishiCorporationF1-30MRorF1-40MRisthecontrollerF1-30MRisthesubminiatureprogrammableforewordcontroller/Itsinput/outputstheportwithPCmachinetoassembleintogether/DoesnotneedtochoosetheIOmoduleagainF1seriesPCdoesnothavebreakdownt
21、imeintervalMTBFis300/000hours/Themutable(0+55/Work；-15+65/Stock)/Bearsthevibration/theimpact(conformstoJISC0911/theC0912standard)/Adoptsthepowersourceprotection/thesupplyvoltagesurveillance/theinstantaneouspowercut4compensates/measureandsoonanti-leveldisturbance/Thereliabilityandtheantjammingability
22、areveryhighItalsohasmakesamistakefromthediagnosisability/Includingcirculartelegramdiagnosis/proceduremonitoringdevice(Watchdog)andEOL/MayguaranteethecorrespondenceandtheprocedureexecutionaccuracyF1-30MRhasinputport16/Outputsport14/CansatisfytheprocedureexactlytheneedWhentheexpansionprocedurefunction
23、alneedincreasestheIOport/Maythroughaffixtheexpansionlist3/2PowersourcesprotectionsandantjammingAlthoughPChasthegoodpowersourceadaptiveness/Alsoshouldtakethemeasurefromtheelectricalpowersystem/Reducesintheinstallmentpowersupplyasfaraspossiblethedisturbance/theundulation/owespresses/theinstantaneoushi
24、ghpressuretothesystemtheinfluenceTherefore/UsesintheelectricalpowersystemSeparationpowersourcepowersupply/insulatingtransformerandpowerfailureprotectorPCmachine/theinputcircuitandtheoutputcircuitbyseparatethepowersource/throughtheinsulatingtransformerpowersupplyInsulatingtransformershieldlevelgoodea
25、rth/ThesecondaryoutputusesthetwistedpairlineThesemeasuresregardingsuppressintheelectricalnetworkandmixintheinputoutputcircuitthedisturbancetocausetheproceduredisoperationtohavethegoodeffectTheinsulatingtransformerusesthehighqualityhighmagnetic-fluxdensitynottohavecutsthecircularcross-sectioncore/Los
26、esslightly/Enabletheequipmentanti-voltageundulationtheabilitytoobtaintheenhancementFrontendtheoutputcircuitpowersourcehasalsoestablishedtheemergencypowerfailureswitch/Whenhastheemergencycase/Maythedump/Protectionsystemsecurity3/3IOallocationandexteriorcircuitdesignControlsystembyPCmachineandinputand
27、outputcircuitconnectionconstitution/EachpartindependentlysuppliespowerbyelectricalnetworkPS/Seeschart1/Theinputcircuitdividestheexaminationinputcircuitandtheoperationinputcircuittwokinds/Theexaminationinputcircuitreceivesthelighttocontrolthelightwhichthetubeandthesensorcontrolstocontroltheswitchandm
28、agneticcontactorG/Si(i=1/2/)AndPCinputportconnection/PotThestoveconditioninformationfeedbackgivesPC/Operationinputcircuitbutton/change-overswitchandsoonandPCinputportconnection/ToPCtransferoperationorderInthecontrolsystemmovementfixedtimeandthesteampressure/thetemperatureandsoontheentiredefinitevaluereadsinPCbytheprogramming/
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