Kev soj ntsuam ntawm PLC Tswj txee thiab core technology

 

PLC Txee Cheebtsam yog cov khoom ua tiav ntawm cov khoom siv hluav taws xob uas sib xyaw ua ke ntau yam khoom siv hluav taws xob kom ua tiav kev tswj hwm lub cev muaj zog, hloov pauv, thiab lwm yam khoom siv. Nws muaj kev tiv thaiv tseem ceeb xws li overload, luv luv Circuit Court, thiab tiv thaiv theem poob, nrog cov qauv compact thiab ruaj khov. Cov kev teeb tsa ua haujlwm tuaj yeem hloov kho tau yooj yim ua ke raws li qhov ntsuas qhov tseeb. Nws tuaj yeem ua tiav kev tswj hwm tsis siv neeg tswj hwm ntawm ib lub txee, thiab tseem tuaj yeem tsim cov kev tswj hwm kev faib tawm los ntawm kev lag luam ethernet lossis industrial fieldbus tes hauj lwm, uas tuaj yeem hloov mus rau ntau qhov sib txawv ntawm kev lag luam automation tswj scenarios. Nws muaj ntau yam kev siv hauv ntau yam kev lag luam xws li hluav taws xob, metallurgy, tshuaj lom neeg, papermaking, thiab kev kho dej khib nyiab ib puag ncig.

 

Raws li cov cuab yeej tseem ceeb ntawm niaj hnub kev lag luam automation tswj, Daim Ntawv Thov Txawb tuaj yeem ua tiav cov khoom siv automation thiab cov txheej txheem automation tswj, nrog kev sib txuas lus zoo hauv network, nrog rau kev ua haujlwm ruaj khov, muaj zog scalability, thiab muaj peev xwm tiv thaiv - cuam tshuam. Cov neeg siv tuaj yeem kho tus qauv tsim ntawm PLC Raws li Kev Tswj Xyuas Txee, zaus hloov pauv cov txee, thiab lwm yam, raws li lawv cov kev xav tau tiag tiag, thiab thaum ua ke nrog tib neeg - tshuab interface kov npo, nws tuaj yeem ua tiav kev ua haujlwm yooj yim. Nws cov ntawv thov raug suav nrog cov dej tsis tu ncua, huab cua compressor tswj, kiv cua thiab twj tso kua mis tswj kev ceev, kev tswj hwm huab cua hauv nruab nrab, chaw nres nkoj tshuab ua haujlwm thiab kev saib xyuas, tshuab cuab yeej ua haujlwm, tswj kev ua haujlwm boiler, ntawv thiab khoom noj khoom haus tshuab automation, thiab ntau lwm yam.

 

 

 

Kev sib xyaw ntawm PLC System Txee rau Dej Dej yuav tsum tau teeb tsa raws li kev tswj hwm, thiab cov ntsiab lus tseem ceeb suav nrog cov khoom tseem ceeb hauv qab no. Cov cua hloov (circuit breaker) feem ntau yog siv los txiav tawm thiab txuas lub zog ntawm lub txee tswj. Txhawm rau kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm cov khoom siv hluav taws xob tseem ceeb, cov khoom siv hluav taws xob ywj pheej tuaj yeem teeb tsa raws li kev ua haujlwm ntawm cov khoom siv, xws li cov khoom siv hluav taws xob rau PLC thiab cov khoom siv hluav taws xob. Raws li cov tub ntxhais tswj chav tsev, PLC tuaj yeem ua tiav qhov yooj yim logic tswj los ntawm cov neeg tiv tauj; Yog tias nws koom nrog kev tswj tsis siv neeg lossis kev ua haujlwm nyuaj, PLC yuav tsum tau teeb tsa. Thaum xaiv, cov haujlwm me me tuaj yeem siv cov PLC sib xyaw ua ke, thaum cov haujlwm loj tuaj yeem xaiv PLCs modular raws li lawv xav tau.

 

Lub 24VDC hloov fais fab mov kuj yog ib qho tseem ceeb ntawm cov Hluav Taws Xob Hluav Taws Xob PLC Vaj Huam Sib Luag. Nws lub hwj chim transistor ua haujlwm nyob rau hauv siab - zaus hloov lub xeev siab tshaj 20kHz. Nrog kev hloov kho thev naus laus zis, qhov hloov pauv tam sim no tuaj yeem ncav cuag ntau pua kilohertz lossis txawm ntau megahertz. Cov ntsiab lus tseem ceeb yog DC converter, uas tuaj yeem muab faib ua tus kheej - zoo siab thiab sib cais zoo siab hom raws li txoj kev hloov hluav taws xob transistor zoo siab. Yog tias lub zog hluav taws xob PLC yog hom DC, ib qho kev hloov hluav taws xob sib cais yuav tsum tau teeb tsa. Feem ntau PLCs tuaj nrog 24VDC lub zog tso zis, thiab seb puas yuav ntxiv teeb tsa lub zog hloov pauv yuav tsum tau txiav txim siab raws li qhov tseeb ntawm daim ntawv thov scenario.

 

Cov kev teeb tsa ntawm cov relays yog ze ze rau cov zis hom tawg - pov thawj PLC txee. Relay tso zis PLC tuaj yeem tsav ncaj qha AC loads lossis lub zog thauj khoom (cov qauv sib txawv muaj peev xwm tsav tsheb sib txawv) yam tsis tas yuav muaj cov khoom nruab nrab ntxiv; Yog hais tias lub transistor tso zis hom PLC yuav tsum tau tsav AC loads los yog lub hwj chim loads, nws yuav tsum tau siv lwm relays los tswj lub relay coil los ntawm PLC tso zis teeb liab, thiab ces tsav lub load khiav los ntawm relay hu. Nyob rau lub sijhawm no, tus relay plays lub luag haujlwm nruab nrab hauv kev hloov dua siab tshiab thiab nthuav dav. Raws li cov khoom siv tseem ceeb rau kev ua tiav kev sib txuas hluav taws xob, lub davhlau ya nyob twg thaiv yog nyob rau hauv qeb ntawm cov khoom sib txuas. Nrog rau kev txhim kho ntawm kev lag luam automation thiab qhov xav tau ntau ntxiv rau kev tswj xyuas qhov tseeb, lawv cov kev siv hauv cov txee tswj tau nce ntxiv. Yog tias lub txee tswj yuav tsum tau txuas ntxiv mus rau lub thawv me me rau lub hwj chim lossis ntau yam twj paj nruag, cov khoom txhawb nqa xws li hloov pauv cua tuaj yeem ntxiv raws li qhov xav tau.

 

 

Kev ua haujlwm ruaj khov ntawm Industrial PLC Txee yuav tsum muaj kev siv tshwj xeeb, thiab cov khoom siv hluav taws xob tuaj yeem siv ob -theem AC 220V (50Hz) lossis DC 24V; qib kev tiv thaiv feem ntau yuav tsum ncav cuag IP20 lossis IP41; Hais txog ib puag ncig, nws yog ib qho tsim nyog yuav tsum nyob deb ntawm qhov chaw muaj zog vibrations, tsis txhob nquag lossis tsis tu ncua ntawm 10-55Hz, tiv thaiv tshav ntuj ncaj qha, tswj qhov chaw ua haujlwm kub ntawm 0℃-55 degree, thiab nyob deb ntawm corrosive thiab flammable gases. Qhov txheeb ze av noo ntawm huab cua yuav tsum tsawg dua 85% (tsis muaj condensation).

 

Cov qauv yooj yim ntawm kev sib koom ua ke Programmable Logic Controller Txee feem ntau suav nrog plaub qhov tseem ceeb: cov khoom siv hluav taws xob, qhov chaw ua haujlwm hauv nruab nrab (CPU), ua tau -hauv nco, thiab tawm tswv yim / tso tawm interface Circuit Court. Lub zog module yog qhov yooj yim lav rau kev ua haujlwm ruaj khov ntawm PLC. Nws cov qauv tsim feem ntau txhawb kev sib txuas ncaj qha rau AC lub zog hluav taws xob yam tsis muaj kev ntsuas ntxiv thaum AC voltage hloov pauv hauv ± 10% (± 15%) ntau. Cov kev hloov pauv hluav taws xob feem ntau suav nrog AC 220V rau DC 24V thiab DC 24V ncaj qha fais fab mov. Lub chaw ua haujlwm hauv nruab nrab (CPU) yog lub chaw tswj hwm ntawm Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob, nrog cov haujlwm tseem ceeb suav nrog kev txais thiab khaws cov neeg siv cov kev pabcuam thiab cov ntaub ntawv, tshuaj xyuas lub zog, nco, I / O interfaces, thiab ceeb toom timer raws li txoj cai, kuaj xyuas cov neeg siv cov kev pabcuam syntax yuam kev, thiab ua tiav kev tswj hwm los ntawm kev xa cov ntaub ntawv tawm tswv yim rau cov neeg siv, thiab ua tiav lub sijhawm ua haujlwm.

 

Lub built- nyob rau hauv lub cim xeeb ntawm Automation Control Txee muab faib ua ob hom: system program memory thiab user program memory, uas yog siv los khaws cov system software thiab daim ntawv thov software, feem. Lub input / output interface Circuit Court yog tus yuam sij rau kev sib cuam tshuam ntawm PLC thiab lwm yam khoom siv. Lub input interface Circuit Court yog lub luag haujlwm rau kev xa cov teeb liab tsim los ntawm cov khoom siv sab nraud xws li cov nyees khawm, mus txawv tebchaws, sensors, thiab lwm yam rau CPU. Raws li hom fais fab mov, nws tuaj yeem muab faib ua DC input circuit thiab AC input circuit. DC input circuit muaj lub sij hawm ncua luv luv thiab tuaj yeem txuas ncaj qha rau cov khoom siv hluav taws xob xws li cov chaw sib thooj thiab cov hluav taws xob hloov hluav taws xob, thaum lub AC input Circuit Court tsim nyog rau qhov chaw hnyav xws li roj pos huab thiab plua plav; Lub tso zis interface Circuit Court yog lub luag hauj lwm rau hloov lub CPU tso zis teeb liab mus rau hauv ib lub teeb liab uas yuav tsav sab nraud execution Cheebtsam, thiab realizing lub on/off tswj cov khoom siv hluav taws xob xws li contactor coils. Txhawm rau kom muaj kev nyab xeeb ntawm cov circuits sab hauv, optical coupling isolation thev naus laus zis feem ntau yog siv rau kev tawm tswv yim - tso zis interface circuits. Cov hom kev tso zis ntau zaus muaj xws li relay output, transistor output, thiab thyristor output. Rau modular Enclosed PLC txee, ntxiv rau cov khoom tseem ceeb, kev ua haujlwm modules, kev sib txuas lus modules, thiab lwm yam txuas ntxiv kuj tuaj yeem teeb tsa raws li qhov xav tau.

 

Cov txheej txheem ua haujlwm ntawm PLC yog nyob ib ncig ntawm lub voj voog scanning. Tom qab muab tso rau hauv lub lag luam, nws yuav tsum ua kom tiav peb theem nyob rau hauv ib ntus: input sampling, neeg siv qhov kev pab cuam, thiab tso zis refresh. Lub CPU yuav rov ua peb theem no ntawm qhov nrawm nrawm nrawm. Nyob rau hauv lub tswv yim sampling theem, Dustroof PLC txee nyeem cov xwm txheej thiab cov ntaub ntawv ntawm tag nrho cov input terminals ib tug los ntawm ib tug nyob rau hauv ib tug scanning yam, thiab khaws cia rau hauv lub input daim ntawv sau npe. Tom qab qhov kawg ntawm theem no, tsis hais seb lub teeb liab tawm tswv yim hloov pauv, cov ntaub ntawv hauv cov duab nkag hauv cov ntawv sau npe tseem tsis hloov pauv. Yog li ntawd, yog hais tias lub tswv yim yog ib tug mem tes teeb liab, nws qhov dav yuav tsum muaj ntau tshaj ib lub voj voog scanning kom paub tseeb tias cov teeb liab nyeem tau.

 

Thaum lub sijhawm ua tiav ntawm tus neeg siv qhov kev pab cuam, Custom PLC Txee luam theej duab cov neeg siv cov kev pab cuam nyob rau sab saum toj - nqes xaj. Rau txhua tus ntaiv daim duab, nws ua ntej luam theej duab cov tswj Circuit Court tsim los ntawm sab laug kev sib cuag, ua tiav cov txheej txheem kev ua haujlwm nyob rau hauv qhov kev txiav txim ntawm sab laug mus rau sab xis thiab sab saum toj mus rau hauv qab, thiab tom qab ntawd rov kho cov xwm txheej ntawm cov logic coil hauv qhov system RAM chaw cia lossis cov zis coil hauv qhov sib txuas me ntsis ntawm I / O mapping cheeb tsam raws li cov txiaj ntsig kev ua haujlwm, lossis ua tiav cov lus qhia tshwj xeeb. Nyob rau theem no, tsuas yog lub xeev thiab cov ntaub ntawv nyob rau hauv lub input duab cheeb tsam nyob ruaj khov, thaum lub xeev thiab cov ntaub ntawv ntawm lwm cov ntsiab lus tso zis thiab software pab kiag li lawm yuav hloov. Qhov kev ua tiav ntawm daim duab saum toj kawg nkaus yuav muaj kev cuam tshuam tam sim ntawm qhov kev pab cuam uas siv cov coils los yog cov ntaub ntawv hauv cov txheej txheem qis, thiab kev hloov tshiab ntawm lub xeev lossis cov ntaub ntawv hauv cov txheej txheem qis yuav tsum tau tos rau lub voj voog scanning tom ntej ua ntej nws tuaj yeem siv rau cov txheej txheem sab saud. Yog tias siv cov lus qhia tam sim I / O hauv qhov kev pab cuam, qhov I / O taw tes tuaj yeem nkag ncaj qha yam tsis tau mus los ntawm thaj chaw ua haujlwm. Cov tswv yim qhia tam sim no ncaj qha siv qhov tseem ceeb los ntawm I / O module, thiab cov lus qhia tam sim ntawd yuav rov ua dua cov ntawv sau npe tam sim.

 

Nyob rau hauv cov zis refresh theem, tom qab ua tiav cov neeg siv qhov kev pab cuam scan, Modular PLC txee yuav rov qab tag nrho cov tso zis latch circuits raws li cov xwm txheej thiab cov ntaub ntawv nyob rau hauv lub I / O duab cheeb tsam, thiab ces tsav sab nraud peripherals los ntawm lub tso zis Circuit Court kom tiav qhov tso zis tawm ntawm PLC.

 

 

Yog hais tias koj muaj customized yuav tsum los yog technical kev sab laj rauPLC tswj txee, thov koj xav tiv tauj peb txhua lub sijhawm. Nrhiav rau pem hauv ntej kom sib txuas lus thiab koom tes nrog koj los muab koj cov kev lag luam automation tswj kev daws teeb meem.