Nyob rau hauv xyoo tsis ntev los no, nrog kev txhim kho ntawm tib neeg, PLCProgrammabtrollers tau siv ntau xyoo, yog li cov haujlwm ua haujlwm tau zoo thiab ua haujlwm nyob ruaj khov ntawm cov txheej txheem hauv cov kab ke Cov.
Kev ntseeg tau ntawm cov khoom plc nws tus kheej tuaj yeem lav, tab sis hauv daim ntawv thov ntawm qee qhov haujlwm tsis raug yuav ua rau muaj qee yam cuam tshuam.
Niaj hnub no, Kuv tau teeb tsa qee qhov kev thov txhua hnub ntawm cov kev txawj, Kuv vam tias yuav pab koj hauv kev siv txhua hnub ntawm PLC.
Cov teeb meem ground
Plc Systems Yuav Tsum Muaj txoj hlua khi ntau dua, nws yog qhov zoo tshaj plaws kom muaj lwm yam khoom siv sib cais, tab sis kuj them rau lwm cov khoom siv cuam tshuam nrog PLC yuav tsum tau nyob kaj lug.
Ntau lub voj voos Circuital cov ntsiab lus, thaum txuas nrog ua ke, tuaj yeem tsim kev xav tsis tau cov cawv uas tuaj yeem ua rau muaj kev xav yuam kev lossis kev puas tsuaj loj.
Qhov laj thawj ntawm cov muaj peev xwm sib txawv hauv paus av feem ntau yog vim qhov tseeb tias cov ntsiab lus av tau sib cais dhau hauv lub cev. Thaum cov khoom siv uas muaj kev sib nrug deb tau txuas nrog ua ke los ntawm cov xov hluav taws xob sib txuas, thiab cov khoom siv tsis sib xws, tuaj yeem tsim kev hloov pauv ntawm lawv thiab cov Muaj peev xwm ua tau zoo, lossis tsim kom muaj cov dej ntws ncaj qha los ntawm Electromagnetic Kev Ua. Tam sim no.
Nruab nrab ntawm cov khoom siv tsis raug, circuits tuaj yeem tsim kev puas tsuaj uas tuaj yeem tsim cov khoom siv ua kom puas tsuaj.
Plc tshuab yog feem ntau yog nyob rau ntawm ib kis. Txhawm rau txhim kho lub peev xwm los tiv thaiv kev cuam tshuam hom-rau ntawm cov paib hluav taws xob, ntawm lub teeb liab ntawm cov av, thiab lub hauv paus lub rwb thaiv tsev tsis kam yuav tsum tsis txhob tsawg dua 50mω.
Kev sib tshuam nrog
Qhov ib puag ncig ntawm lub vev xaib yog qhov hnyav, thiab muaj ntau zaus thiab tsawg thiab tsawg thiab nthuav dav rau hauv PLC los ntawm cov khoom sib txuas nrog cov khoom sib txuas
Ntxiv nrog rau kev ntsuas hauv av, hauv kev xaiv cable thiab sau kev tsim kho, yuav tsum them nyiaj rau kev ntsuas cuam tshuam rau qee yam kev tawm tsam
(1) Cov cim analog yog cov cim me me, muaj kev cuam tshuam heev rau kev cuam tshuam sab nraud, yuav tsum tau siv ob chav ntawm cov hlau thaiv cable
(2) Kev ceev cov cim mem tes cim (xws li kev xaiv digital, tab sis kuj yog los tiv thaiv kev cuam tshuam rau sab nraud, tab sis kuj tseem yuav tiv thaiv kev cuam tshuam loj ntawm mem tes
(3) PLC kev sib txuas lus cable ntawm cov zaus ntau dua, feem ntau yuav siv cov khoom siv cable muab siab, koj tuaj yeem xaiv cov kab sib txuas-khub cable nrog kev thaiv
(4) Cov teeb liab analog, DC cov paib thiab cov teeb liab tsis tuaj yeem nyob hauv tib lub trough
(5) tswj cov txee qhia mus rau hauv cov hmoov txhuas thaiv yuav tsum tau cog lus, yuav tsum tsis txhob txuas ncaj qha rau cov cuab yeej siv
(6) AC cim, DC cov cim thiab analog cov cim tsis tuaj yeem faib cov cable, fais fab yuav tsum tau nteg sib cais los ntawm lub teeb liab cable
(7) Hauv kev saib xyuas kev tu, los daws cov kev cuam tshuam ntawm cov kev cuam tshuam yog: qhov cuam tshuam ntawm cov kab uas cov ntaub thaiv npog, rov tso cov ntaub thaiv npog; Hauv qhov kev pab cuam kom ntxiv kev sib cuam tshuam kev sib cuam tshuam
TshemtshuajNtawm wiresto zam kev ua haujlwm tsis ncaj
Muaj lub peev xwm ntawm cov xov hlau ntawm cov cable ntawm cov cable, thiab cov ntaub ntawv tsim nyog tuaj yeem txwv qhov muaj peev xwm ntawm qee qhov ntau.
Txawm hais tias tus tsim nyog siv cable, thaum lub cable ntev ntau tshaj qhov ntev ntev, qhov muaj peev xwm siv rau cov xov hlau yuav tsum tau ua rau PLC qhov kev ua haujlwm tsis sib haum, yuav muaj Ntau ntawm qhov tsis muaj peev xwm.
Cov xwm txheej no feem ntau yog ua kom zoo li: wiring yog qhov tseeb, tab sis plc tab sis tsis muaj kev nkag; Plc yuav tsum tsis muaj cov tswv yim, tab sis yuav tsum tsis muaj tab sis muaj, uas yog, PLC inputions cuam tshuam nrog txhua lwm yam. Yuav kom daws tau qhov teeb meem no, nws yuav tsum ua:
(1) Siv cov ntoo uas nws cov cores yog cov sib xyaw ua ke;
(2) Sim ua kom luv ntev ntawm kev siv cable;
(3) Siv cais cov kab sib txawv rau kev tawm tswv yim uas cuam tshuam nrog txhua lwm yam;
(4) siv cov ntaub thaiv npog.
Xaiv cov zis qauv
Cov qauv tso zis tawm tau muab faib ua transistor, bi-directional Thyristor thiab Hom Hu:
(1) Transistor hom hloov ceev yog qhov nrawm dua (feem ntau 0. 3A, 24vdc, haum rau nrawm Hloov, cov paib txheem sib tiv toj, feem ntau nrog hloov dua siab tshiab, dC cov khoom siv thiab lwm cov teeb liab sib txuas, yuav tsum them sai sai rau cov transistor to tam sim no ntawm lub nra.
(2) Thyristor hom muaj qhov zoo ntawm tsis muaj kev tiv tauj, AC thauj khoom muaj peev xwm, thauj khoom muaj peev xwm tsis loj.
(3) Relay tso zis muaj cov yam ntxwv ntawm AC thiab DC loads, thiab lub peev xwm thauj tau loj. Kev tswj hwm cov kev xaiv feem ntau yog xaiv thawj ntawm Repay sib cuag hom zis tawm, feem ntau txog 10ms, tsis haum rau qhov hloov kho siab hloov.
InverterOVOADYthiab overcurrent tuav
(1) Txo cov kev ua haujlwm kom muaj lub cev muaj zog, lub zog rov qab los kuj tseem ua rau lub zog converter, yog li lub catacitor lub zog, Thiab tsis ntev mus cuag DC OVVOLTage tiv thaiv ntawm lub rectifier thiab ua kom cov ntxaij hloov pauv.
Kev Kho Mob: Siv kev ntsuas kom nce lub zog tsis kam sab nraud (cov zaus
(2) Inverter nrog ntau lub cev muaj zog me, thaum ib qho ntawm cov neeg motors me me overcurrent txhaum, uas ua rau lwm tus neeg lub cev me me tseem nres ua haujlwm.
Kev Kho Mob:Ntxiv 1: 1 kev cais hloov pauv ntawm cov zis ntawm cov kev hloov pauv, thaum muaj qhov cuam tshuam me me ntawm cov pa hloov pauv, yog li tiv thaiv cov zaus hloov pauv ntawm kev xa tawm. Tom qab sim, kev ua haujlwm zoo, thiab tom qab ntawd tsis tshwm sim ua ntej lub cev muaj zog ib txwm tseem kaw qhov txhaum.
Kev cim cov kev tawm tswv yim thiab tawm rau kev kho kom yooj yim
Plc tswj tau lub zog nyuaj, dab tsi tuaj yeem pom yog sab saum toj thiab hauv qab ntawm ob kab ntawm lub teeb ci ntsa iab nrog kaum ob ntawm taw. Txhua tus neeg uas tsis saib cov duab kos duab rau kev txhim kho cov khoom tsis muaj peev xwm, yuav yog ib qho kev txhaum yuav raug ua txhaum tshwj xeeb. Hauv kev pom ntawm cov xwm txheej no, peb kos ib daim ntawv raws li cov hluav taws xob hluav taws xob, sau npe rau txhua lub txee rau lub cev thiab cov khoom siv hluav taws xob, lub npe Suav, zoo ib yam li Cov lus piav qhia txog kev sib xyaw Circuit Court pins.
Nrog cov tswv yim thiab cov zis tso zis, rau kev nkag siab txog cov txheej txheem ua haujlwm lossis paub cov khoom siv ntaiv ntawm cov hluav taws xob tuaj yeem tsim kho dua tshiab.
Tab sis rau cov neeg uas tsis paub txog cov txheej txheem ua haujlwm, yuav tsis saib cov ntaiv ntaiv ntawm cov hluav taws xob, nws yog qhov tsim nyog los kos lwm daim ntawv: PLC cov tswv yim thiab cov zis logic ua haujlwm rooj. Lub rooj tiag tiag piav qhia feem ntau ntawm cov txheej txheem kev ua haujlwm ntawm cov voj voos ntawm cov voj voos (cov khoom sib txuas lus) thiab cov zis tawm (actuator) kev sib sau.
Xyaum qhia tau tias: Yog koj muaj peev xwm siv cov lus qhia thiab tso tawm cov lus sib xyaw ua ke, tsis muaj lub cim hluav taws xob, tsis muaj kos duab, tab sis kuj tuaj yeem yooj yim.
Inferring ua txhaum los ntawm cov kev pab cuam
Tam sim no feem ntau siv hauv kev lag luam, ntau hom PLC, rau cov lus qhia qis dua plc, cov kab ntaiv qis dua, xws li s {2}}, muaj ntau cov kev pab cuam tau sib sau siv cov lus lus.
Cov kos duab ntaiv yuav tsum tau tshaj tawm nrog cov cim suav, saib ntawm cov txheej txheem ntaiv ua ntej yog tias koj tuaj yeem nkag siab cov txheej txheem lossis cov txheej txheem ua haujlwm, nws zoo li yooj yim dua.
Yog tias kev ntsuas hluav taws xob yuam kev, feem ntau cov ntawv thov ntawm cov qauv tsis muaj zog lossis cov zis kev sib sau ua kom pom kev sib raug zoo, pib pom cov tshuaj ntsuam xyuas kom tau raws li lub txoj kev sib raug zoo ntawm nws qhov kev txiav txim.
Kev paub tau pom tias qhov kev txhaum yuav raug tshem tawm thaum muaj teeb meem tshwm sim, vim tias tsis muaj ntau lub ntsiab lus tsis ua tiav qhov twg ob thiab ntau dua qhov muaj tshwm sim hauv cov khoom tib lub sijhawm.
Plc tus kheej kev txiav txim siab
Feem ntau, PLC yog cov khoom siv tsis tau zoo, plc, CPU thiab software ua haujlwm tsis zoo, yuav luag tsis muaj kev puas tsuaj, Plc tso tawm relay qhib taw tes, yog tias tsis yog peripheral thauj khoom luv luv luv tshaj li qhov ntsuas tau tshaj qhov kev sib cuag, lub neej ntawm kev tiv tauj kuj yog ntev heev.
Yog li ntawd, peb pom cov ntsiab lus hluav taws xob tsis ua hauj lwm, ua rau pom cov hluav taws xob ntawm PlC, tsis yog ib txwm ua rau kho cov cuab yeej tsis raug, kev ua tiav sai ntawm kev tsim khoom.
Yog li ntawd, tus sau hais txog Plc Contriop ntawm cov kev daws teeb meem hluav taws xob ntawm cov plc nws tus kheej, tab sis PLC tswj cov hluav taws xob cov hluav taws xob sib xyaw.