Hauv kev tsom xam qhov tob ntawm cov teeb meem tshwm sim hauv kev teeb tsa sab hauv thiab hluav taws xob thaiv ntawm PLC Tswj txee

Lub hwj chim ntawm PLC Tswj txee tau muab faib ua cov khoom siv hluav taws xob sab nraud thiab cov khoom siv hluav taws xob sab hauv, uas muaj cov haujlwm sib txawv thiab cov kev xav tau, thiab yog lub hauv paus rau kev ua haujlwm ruaj khov ntawm PLC. Cov khoom siv hluav taws xob sab nraud yog siv los tsav PLC cov khoom tso tawm (loads) thiab muab cov tswv yim tawm tswv yim, tseem hu ua cov neeg siv hluav taws xob. Tej zaum yuav muaj ntau yam tshwj xeeb ntawm cov khoom siv hluav taws xob sab nraud rau tib lub PLC, thiab nws lub peev xwm thiab kev ua tau zoo yog txiav txim siab los ntawm cov khoom siv tso zis thiab PLC input circuits. Vim yog kev lim dej thiab kev cais tawm ntawm PLC's I / O Circuit Court, qhov yuav tsum tau muaj rau cov khoom siv hluav taws xob sab nraud kuj tsawg. Cov khoom siv hluav taws xob sab hauv yog cov khoom siv hluav taws xob ua haujlwm rau cov khoom siv hluav taws xob sab hauv ntawm PLC, thiab nws qhov kev ua tau zoo cuam tshuam ncaj qha rau kev ntseeg siab ntawm PLC txee Cheebtsam. Yog li ntawd, nws muaj cov kev xav tau siab thiab feem ntau yog siv los ua ib qho kev hloov pauv hloov hluav taws xob ruaj khov los yog thawj qhov chaw qis qis -pass lim stabilized fais fab mov.

Nyob rau hauv cov xwm txheej uas muaj kev cuam tshuam muaj zog lossis muaj kev ntseeg siab, ib qho kev sib cais transformer nrog ib txheej thaiv yuav tsum tau siv los ua lub zog rau PLC system, thiab LC lim Circuit Court tuaj yeem txuas rau hauv cov kab hauv ob sab ntawm kev rho tawm transformer; Nyob rau tib lub sijhawm, kev sib tw twisted khub yuav tsum tau siv ntawm kev sib cais transformer thiab PLC thiab I / O fais fab mov los tswj kev cuam tshuam series. Cov kab hluav taws xob hauv lub cev yuav tsum raug xaiv nrog cov kab hlau loj txaus kom txo cov kab hluav taws xob poob thaum pib cov khoom siv loj. Thaum lub PLC input Circuit Court txuas nrog ib qho hluav taws xob DC sab nraud, lub zog ruaj khov yuav tsum tau siv ua ntej kom tsis txhob muaj teeb meem tawm tswv yim.

Ib qho ntawm cov kev cai tseem ceeb rau kev teeb tsa thiab xaim ntawm PLC Tswj txee yog kom nyob deb ntawm qhov chaw muaj zog cuam tshuam kom tsis txhob cuam tshuam cov teeb liab cuam tshuam rau kev ua haujlwm ntawm cov khoom siv. Thaum xaim hluav taws xob, cov kab hluav taws xob, cov kab tswj, PLC cov kab hluav taws xob, thiab cov kab I / O yuav tsum tau xaim nyias, thiab cov hluav taws xob sib cais yog txuas nrog PLC thiab I / O siv cov hlua txuas; Cov kab I/O thiab siab - cov kab hluav taws xob ntawm PLC yuav tsum tau sib cais. Yog tias lawv yuav tsum tau muab tso rau hauv tib lub tais cable, AC thiab DC kab yuav tsum tau muab cais ua ke. Yog tias muaj cov xwm txheej tso cai, yuav tsum tau muab qhov tseem ceeb rau kev taug kev hauv cov tais cais kom txo qis kev cuam tshuam. Hais txog qhov chaw teeb tsa, PLC yuav tsum tau ceev kom deb ntawm qhov muaj zog cuam tshuam xws li vuam tshuab, siab - lub zog silicon rectification li, thiab cov khoom siv fais fab loj. Nws yuav tsum tsis txhob muab tso rau hauv tib daim ntawv thov txee li siab - cov khoom siv hluav taws xob hluav taws xob.

Qhov kev ncua deb ntawm PLC thiab cov kab hluav taws xob hauv lub txee yuav tsum siab tshaj 200mm. Inductive loads (xws li siab -hwj chim relays thiab contactor coils) nyob rau hauv tib lub txee raws li lub PLC yuav tsum tau txuas nyob rau hauv parallel nrog RC arc hluav taws xob circuits. Tsis tas li ntawd, AC cov kab hluav taws xob thiab cov kab hluav taws xob DC yuav tsum tsis txhob siv tib lub cable, thiab cov kab tso zis yuav tsum tau khaws cia kom deb ntawm qhov siab - cov kab hluav taws xob thiab cov kab hluav taws xob li sai tau kom tsis txhob muaj kev sib txuam.

Cov txheej txheem ntawm I / O lub davhlau ya nyob twg thaiv ncaj qha cuam tshuam rau qhov raug thiab cov cuab yeej kev nyab xeeb ntawm PLC Vaj Huam Sib Luag Tswj Logic Program Stainless Steel Tsis Siv Neeg Txias Txias Hluav Taws Xob kis tau tus mob, thiab cov kev cai tsim nyog yuav tsum tau ua raws li nruj me ntsis. Thaum xaim, cov kab tawm tswv yim thiab cov kab tawm ntawm PLC yuav tsum tau sib cais, thiab qhov hloov pauv thiab cov cim analog kuj yuav tsum tau muab tso rau nyias. Analog signals yuav tsum tau xa mus siv cov ntaub thaiv npog, nrog rau ib los yog ob qho tib si kawg ntawm lub shielding txheej grounded, thiab cov av tiv thaiv yuav tsum tsawg tshaj li 1/10 ntawm shielding txheej kuj. Nyob rau hauv cov nqe lus ntawm input thaiv, qhov ntev ntawm txoj hlua yuav tsum tsis txhob ntev dhau. Yog hais tias ib puag ncig cuam tshuam me me thiab qhov hluav taws xob poob tsis tseem ceeb, nws tuaj yeem txuas ntxiv kom tsim nyog; Cov kab tawm tswv yim thiab cov zis yuav tsum tsis txhob sib koom tib lub cable thiab yuav tsum tau sib cais nruj me ntsis; Lub G8 Switchgear PLC Tsis Siv Neeg Tswj Txiaj Ntsig Cov Vaj Huam Sib Luag yog qhov zoo dua txuas nrog cov tswv yim sib txuas uas siv ib txwm qhib kev sib cuag, kom ntseeg tau qhov sib xws ntawm tus ntaiv daim duab thiab cov schematic relay kom nyeem tau yooj yim thiab debugging.

Nyob rau hauv cov nqe lus ntawm cov khoom sib txuas, nws yog ib qho tsim nyog yuav tsum paub qhov txawv ntawm qhov kev tso tawm ywj pheej thiab cov txiaj ntsig zoo sib xws. Cov pab pawg sib txawv tuaj yeem siv ntau hom thiab qhov sib txawv ntawm cov zis voltages, thaum tib pab pawg ntawm cov zis yuav tsum tau siv tib hom thiab voltage theem ntawm cov khoom siv hluav taws xob; Nws yog ib qho tsim nyog kom tsis txhob muaj luv luv Circuit Court nyob rau hauv lub load txuas nrog cov khoom tso tawm kom tsis txhob kub hnyiab ntawm cov ntawv luam tawm Circuit Board; Thaum siv relay tso zis, nws yog ib qho tsim nyog los xaiv qhov tsim nyog specifications rau inductive loads thiab ntxiv kev rho tawm relays yog tias tsim nyog los ncua lub neej kev pab cuam ntawm relay; Nyob rau tib lub sijhawm, kev tiv thaiv - yuav tsum muaj kev cuam tshuam kev cuam tshuam, xws li DC tso zis nrog kev tiv thaiv tube freewheeling, AC tso zis nrog impedance capacitance absorption circuit, thiab lwm yam.

Kev cog qoob loo zoo yog qhov tseem ceeb rau kev ua haujlwm txhim khu kev qha ntawm PLC System Txee rau Dej Dej, uas tuaj yeem ua kom muaj kev nyab xeeb thiab muaj txiaj ntsig zoo cuam tshuam. Lub hauv paus ntawm PLC tswj qhov system suav nrog cov txheej txheem hauv av, tiv thaiv av, AC grounding, thiab tiv thaiv av. Chaotic grounding systems tuaj yeem ua rau muaj ntau yam txhaum. Yog hais tias qhov av yog chaotic, nws yuav ua rau tsis sib npaug ntawm qhov muaj peev xwm ntawm txhua qhov chaw hauv av, ua rau hauv av muaj peev xwm sib txawv thiab hauv av voj voog tam sim no, uas yuav cuam tshuam rau kev ua haujlwm ntawm lub cev; Yog hais tias lub cable shielding txheej yog grounded nyob rau hauv ntau lub ntsiab lus, tam sim no tej zaum yuav generated vim av muaj peev xwm sib txawv, uas ua rau kom muaj kev pheej hmoo ntawm xob laim ntaus thiab tej zaum kuj tsim ib tug kaw voj. Nyob rau hauv qhov kev txiav txim ntawm kev hloov magnetic teb, induced currents yuav raug generated, uas yuav cuam tshuam nrog lub teeb liab Circuit Court los ntawm coupling.

Raws li cov qauv hauv av, kev nyab xeeb hauv av yuav tsum tau txuas cov av hauv av ntawm cov kab hluav taws xob mus rau lub txee kom tsis txhob muaj hluav taws xob los yog raug mob los ntawm lub txee raug them; Cov txheej txheem hauv av yuav tsum xyuas kom meej tias Cov Hluav Taws Xob Hluav Taws Xob PLC Vaj Huam Sib Luag txee yog nyob ntawm tib lub peev xwm raws li cov khoom siv tswj, thiab cov av tiv thaiv yuav tsum tsis pub tshaj 4 Ω. Feem ntau, PLC cov cuab yeej siv hauv av txuas nrog rau qhov tsis zoo ntawm lub tshuab hluav taws xob hloov hluav taws xob hauv lub txee tswj raws li kev tswj hwm hauv av; Lub teeb liab thiab shielding grounding yuav tsum xyuas kom meej tias cov kab teeb liab muaj qhov tshwj xeeb siv hauv av. Shielded cables yuav tsum tau grounded ntawm ib qho chaw nyob rau hauv cov xwm txheej uas muaj kev cuam tshuam cuam tshuam tshwm sim. Thaum lub teeb liab qhov chaw yog grounded, lub shielding txheej yuav tsum tau grounded ntawm lub teeb liab sab. Thaum lub teeb liab qhov chaw tsis grounded, nws yuav tsum tau grounded ntawm PLC sab. Cov txheej thaiv tiv thaiv ntawm cov teeb liab kab sib koom yuav tsum txuas ruaj khov thiab tiv thaiv kom tsis txhob muaj ntau- taw tes hauv av.

Yog tias koj muaj kev sab laj lossis kev daws teeb meem kev xav tau hauv kev teeb tsa sab hauv, hluav taws xob thaiv, lossis cuam tshuam kev cuam tshuam ntawmPLC tswj txee, thov koj xav tiv tauj peb txhua lub sijhawm. Peb yuav muab kev txhawb nqa kev tshaj lij thiab kev daws teeb meem raws li koj qhov xwm txheej tiag tiag los pab koj cov cuab yeej ua haujlwm ruaj khov thiab ua haujlwm tau zoo.