I. Kev Taw Qhia
A. Kev txhais ntawm Relay
Lub relay yog ib qho hluav taws xob hloov hluav taws xob uas tswj los ntawm lwm qhov hluav taws xob hluav taws xob.Nws muaj ib co coil uas tsim ib tug magnetic teb thiab ib txheej ntawm kev sib cuag uas qhib thiab kaw nyob rau hauv teb rau magnetic teb.Relays yog siv los tswj cov hluav taws xob hluav taws xob uas cuam tshuam nrog cov hluav taws xob siab lossis qhov hluav taws xob, lossis qhov twg ntau lub tshuab yuav tsum tau tswj los ntawm ib qho chaw.
B. Qhov tseem ceeb ntawm Relays
Relays yog ib qho tseem ceeb ntawm ntau lub tshuab hluav taws xob.Lawv muab txoj hauv kev nyab xeeb thiab muaj txiaj ntsig los tswj cov hluav taws xob tam sim no lossis hluav taws xob hluav taws xob, thiab lawv tso cai rau kev tswj hwm ntau lub tshuab los ntawm ib qho chaw.Relays yog siv nyob rau hauv ntau yam kev siv, nrog rau hauv tsheb, industrial machinery, thiab cov khoom siv hauv tsev.
C. Lub hom phiaj ntawm Tsab Cai
Lub hom phiaj ntawm tsab xov xwm no yog muab cov lus qhia txog yuav ua li cas relays ua haujlwm thiab piav qhia yuav ua li cas kuaj seb lub relay puas ua haujlwm lossis tsis ua haujlwm.Nws tseem yuav muab cov lus qhia txog kev daws teeb meem ntawm qhov tsis raug relay thiab hloov nws yog tias tsim nyog.Thaum kawg ntawm tsab xov xwm no, cov neeg nyeem yuav tsum muaj kev nkag siab zoo txog yuav ua li cas relays muaj nuj nqi thiab yuav ua li cas los daws cov teeb meem sib cuam tshuam.
II.Yuav Ua Li Cas Relays Ua Haujlwm
A.Relay Cheebtsam
Relays yog tsim los ntawm ntau yam tseem ceeb.Cov no suav nrog cov coil tswj, cov neeg sib cuag, thiab cov ntaub thaiv npog.Cov coil tswj feem ntau yog cov hlau kauj uas tsim cov hlau nplaum thaum tam sim no ntws los ntawm nws.Cov kev sib cuag yog cov hluav taws xob hloov hluav taws xob uas qhib thiab kaw nyob rau hauv cov lus teb rau cov hlau nplaum.Lub enclosure yog qhov kev tiv thaiv casing uas nyob rau hauv lub relay Cheebtsam.
B. Yuav Ua Li Cas Relays Hloov Hluav Taws Xob Hluav Taws Xob
Thaum tam sim no ntws los ntawm kev tswj kauj, nws tsim ib qho chaw sib nqus uas rub cov neeg sib cuag los yog thawb lawv sib nrug.Qhov kev txav ntawm cov neeg sib cuag no yog qhov qhib lossis kaw cov hluav taws xob hluav taws xob uas lub relay tswj tau.Relays feem ntau yog siv los tswj cov hluav taws xob tam sim no lossis hluav taws xob hluav taws xob, xws li cov nyob hauv tsheb lossis cov tshuab ua haujlwm.
C. Hom Relays
Relays tuaj nyob rau hauv ntau hom, txhua tus tsim los rau cov kev siv tshwj xeeb.Nov yog qee yam ntawm ntau hom relays:
1.Electromagnetic Relays
Electromagnetic relays yog ntau hom relays.Lawv ua haujlwm los ntawm kev siv lub tshuab hluav taws xob los ua kom lub zog hloov, uas tom qab ntawd tig rau lossis tawm lub voj voog.Electromagnetic relays tuaj yeem tuav lub zog siab thiab qhov hluav taws xob, ua rau lawv zoo tagnrho rau kev siv hauv kev lag luam, xws li tsheb relays hauv lub thawv fuse, cov hom phiaj dav dav.
2.Solid State Relays
Solid state relays (SSRs) yog cov hluav taws xob hluav taws xob uas siv cov khoom siv hluav taws xob hloov pauv hloov ntawm cov neeg kho tshuab.Lawv muaj kev ntseeg siab dua thiab muaj lub neej ntev dua li cov khoom siv hluav taws xob, ua rau lawv tsim nyog rau cov ntawv thov uas xav tau kev ntseeg siab.
3.Reed Relays
Reed relays siv lub magnetic teb los qhib qhov hloov.Lawv yog cov me me thiab muaj kev sib hloov ceev dua li cov hluav taws xob relays, ua rau lawv zoo tagnrho rau cov ntawv thov uas muaj ntau zaus hloov pauv.
4.Diode Relays
Diode relays yog siv los tiv thaiv cov khoom siv hluav taws xob tsis zoo los ntawm qhov hluav taws xob hluav taws xob uas tuaj yeem tshwm sim thaum lub relay raug tua.Lawv kuj tau siv hauv kev siv tsheb los tiv thaiv kev puas tsuaj rau lub tsheb hluav taws xob.
5.Polarized Relays
Polarized relays siv lub magnetic teb los qhib qhov hloov, tab sis lawv xav tau ib qho polarity los ua haujlwm.Lawv feem ntau yog siv rau hauv kev siv tsheb, xws li cua txias thiab cua wipers.
6.Latching Relays
Latching relays siv lub mem tes me me ntawm tam sim no los qhib qhov hloov, uas tom qab ntawd latches nyob rau hauv qhov chaw kom txog thaum lwm lub mem tes ntawm tam sim no siv.Lawv feem ntau siv rau hauv daim ntawv thov uas yuav tsum tau siv hluav taws xob tsawg.
7.Sijhawm ncua sijhawm Relays
Lub sij hawm ncua relays yog siv los ncua kev hloov ntawm lub voj voog rau ib lub sijhawm tshwj xeeb.Lawv feem ntau siv rau hauv daim ntawv thov uas yuav tsum tau ncua sijhawm ua ntej qhib lossis kaw lub voj voog.
8.Thermal Relays
Thermal relays siv qhov kub thiab txias raws li lub tshuab ua kom lub zog.Lawv feem ntau yog siv los tiv thaiv cov motors los ntawm overheating.
Hauv kev xaus, kev nkag siab txog ntau hom relays tuaj yeem pab koj xaiv txoj cai relay rau koj daim ntawv thov tshwj xeeb.Nws yog ib qho tseem ceeb uas yuav tau xaiv hom relay kom raug los xyuas kom meej tias nws yuav ua haujlwm zoo thiab muaj kev ntseeg siab hauv koj lub voj voog.Los ntawm kev paub txog qhov muaj zog thiab kev txwv ntawm txhua hom relay, koj tuaj yeem ua qhov kev txiav txim siab thaum xaiv tus relay rau koj qhov project.
III.Cov cim ntawm Faulty Relay
A. Relay Nyem
Ib qho ntawm feem ntau cov cim qhia ntawm faulty relay yog lub suab nias uas nws ua thaum nws hloov mus los yog tawm.Txawm li cas los xij, yog tias lub suab nias tsis sib haum lossis tsis muaj suab txhua, ces nws tuaj yeem qhia tau tias muaj kev cuam tshuam tsis raug.
B. Cov khoom siv hluav taws xob tsis ua haujlwm
Lwm qhov cim qhia ntawm qhov yuam kev relay yog thaum cov khoom siv hluav taws xob uas lub relay tswj tau, xws li lub tshuab cua wipers lossis cua txias, nres ua haujlwm tag nrho.Qhov no tuaj yeem qhia tau tias tus relay tsis tuaj yeem hloov hluav taws xob hluav taws xob rau lossis tawm, tiv thaiv cov khoom siv hluav taws xob los ntawm kev txais lub zog.
C. Flammable lossis Explosive Gases
Yog hais tias lub relay raug ntsia rau hauv ib puag ncig uas muaj cov pa taws kub hnyiab los yog tawg, lub relay faulty tuaj yeem ua rau cov pa taws kub hnyiab, ua rau muaj kev txhawj xeeb txog kev nyab xeeb loj.Yog li ntawd, nws yog ib qho tseem ceeb kom tsis tu ncua xyuas cov relays nyob rau hauv cov hom ntawm ib puag ncig kom ntseeg tau tias lawv ua hauj lwm zoo.
D. Lub Hwj Chim Loj
Relays yog tsim los tiv thaiv lub zog surges thiab lwm yam hluav taws xob irregularities.Txawm li cas los xij, qhov yuam kev relay tuaj yeem ua tsis tau, uas ua rau muaj kev puas tsuaj rau cov khoom siv hluav taws xob lossis cov tshuab uas nws xav tau los tiv thaiv.
E. Short Circuits
Lub faulty relay tuaj yeem ua rau luv luv, uas tuaj yeem ua rau muaj kev puas tsuaj rau cov kab hluav taws xob lossis txawm tias pib hluav taws.Nws yog ib qho tseem ceeb kom tsis tu ncua xyuas cov relays rau cov cim ntawm kev puas tsuaj los yog hnav, thiab hloov lawv sai li sai tau thaum pom muaj teeb meem.
Los ntawm kev paub txog cov cim no, koj tuaj yeem txheeb xyuas tau yooj yim yog tias lub relay ua haujlwm zoo lossis yog tias nws yuav tsum tau hloov pauv kom tsis txhob muaj kev puas tsuaj ntxiv lossis kev nyab xeeb.
IV.Kuaj ib Relay
A. Cov kauj ruam mus kuaj ib Relay
Kev ntsuam xyuas tus relay yog txheej txheem yooj yim uas tuaj yeem ua tiav txawm tias los ntawm kev siv tshuab ua haujlwm.Nov yog cov kauj ruam los kuaj ib qho relay:
Tshem lub relay ntawm lub tsheb hluav taws xob.
Txheeb xyuas daim duab kab hluav taws xob txhawm rau txheeb xyuas cov coil relay thiab hloov tus pins.
Ntsuas tus nqi tsis kam ntawm cov relay tswj coil terminals nrog multimeter.Ib tug ua hauj lwm relay yuav tsum qhia tus nqi tiv thaiv nyob rau hauv qhov ntau teev nyob rau hauv tus tswv phau ntawv los yog phau ntawv pab.kev pabcuam.
Txheeb xyuas tus nqi tiv thaiv ntawm cov relay hloov terminals nrog ib tug multimeter.Tus nqi kuj yuav tsum yog infinite thaum lub relay yog de-energized thiab xoom thaum nws energized.
Kuaj cov relay hloov hu rau txuas ntxiv siv lub multimeter's continuity hom.
B. Kev ntsuam xyuas nrog Multimeter
Multimeter yog ib qho cuab yeej siv tau rau kev sim cov relays.Ntawm no yog yuav ua li cas mus kuaj ib tug relay nrog ib tug multimeter:
Teem lub multimeter los ntsuas DC voltage.
Txuas lub multimeter qhov zoo coj mus rau relay tus tswj coil davhlau ya nyob twg.
Txuas lub multimeter qhov tsis zoo rau lub roj teeb lub davhlau ya nyob twg tsis zoo.
Ntsuas lub roj teeb voltage.
Ua kom lub zog relay los ntawm kev siv lub zog rau lub kauj tswj siv lub jumper hlau.
Ntsuas qhov voltage ntawm lub relay lub davhlau ya nyob twg.Qhov voltage yuav tsum nyob ze rau lub roj teeb voltage yog tias lub relay ua haujlwm zoo.
C. Kev sim nrog Jumper Wires
Lwm txoj hauv kev los ntsuas lub relay yog siv cov xov hlau jumper.Nov yog li cas:
Tshem lub relay ntawm lub tsheb hluav taws xob.
Txuas lub jumper hlau los ntawm qhov zoo davhlau ya nyob twg ntawm lub roj teeb mus rau relay tus tswj coil davhlau ya nyob twg.
Txuas lwm lub jumper hlau los ntawm qhov tsis zoo ntawm lub roj teeb lub davhlau ya nyob twg mus rau lub relay tswj coil hauv av.
Mloog rau lub suab nias ntawm lub relay, qhia tias nws ua haujlwm.
Siv lub teeb ntsuas ntsuas los kuaj xyuas lub zog ntawm relay tus pins hloov.
Los ntawm kev ua raws li cov kev sim no, koj tuaj yeem txiav txim siab seb lub relay puas ua haujlwm zoo lossis yuav tsum tau hloov.
V. Kev daws qhov teeb meem tsis raug
A. Kev txheeb xyuas qhov teeb meem
Yog tias koj xav tias koj muaj faulty relay, thawj kauj ruam yog los txheeb xyuas qhov teeb meem.Saib xyuas cov cim qhia ntawm lub faulty relay, xws li nias lub suab lossis cov khoom siv hluav taws xob tsis ua haujlwm.Koj tuaj yeem siv ib lub multimeter lossis jumper xov hlau los kuaj cov relay.
B. Nrhiav qhov tseeb Relay
Thaum koj tau txheeb xyuas qhov faulty relay, koj yuav tsum nrhiav qhov tseeb hloov.Txheeb xyuas tus tswv phau ntawv lossis phau ntawv qhia kev pabcuam rau koj lub tsheb lossis hluav taws xob kom pom qhov tseeb relay.Nco ntsoov kom tau txais hom thiab qhov loj ntawm relay rau koj daim ntawv thov.phau ntawv qhia kev pabcuam rau koj lub tsheb lossis hluav taws xob kom pom
C. Cov duab kos
Xa mus rau daim duab kab hluav taws xob rau koj lub tsheb lossis lub tshuab hluav taws xob txhawm rau txiav txim siab qhov chaw ntawm qhov teeb meem relay thiab nws txuas li cas.Qhov no yuav pab koj tshem tawm thiab hloov lub relay kom raug.
D. Hloov qhov Faulty Relay
Txhawm rau hloov lub faulty relay, ua ntej, xyuas kom meej tias lub kaw lus yog de-energized.Tom qab ntawd, tshem tawm cov qub relay thiab hloov nws nrog ib qho tshiab.Nco ntsoov txuas tus tshiab relay kom raug, ua raws li daim duab thaiv.Ntsuam xyuas tus tshiab relay kom paub meej tias nws ua haujlwm zoo.
VI.Xaus
A. Recap ntawm Cov Ntsiab Lus Tseem Ceeb
Hauv tsab xov xwm no, peb tau hais txog cov hauv paus ntawm cov relays, lawv ua haujlwm li cas, thiab yuav ua li cas qhia seb lub relay ua haujlwm zoo li cas.Peb kuj tau tham txog cov cim qhia ntawm lub faulty relay, yuav ua li cas kuaj thiab teeb meem relay, thiab yuav ua li cas los hloov lub faulty relay.
B. Qhov tseem ceeb ntawm kev saib xyuas tsis tu ncua
Nws yog ib qho tseem ceeb uas yuav tsum tau ua kev saib xyuas tsis tu ncua ntawm koj lub tsheb lossis hluav taws xob kom tiv thaiv kev cuam tshuam tsis ua haujlwm.Qhov no suav nrog kev tshuaj xyuas cov kab hluav taws xob, xyuas lub thawv fuse, thiab kuaj cov relays ib ntus.Kev saib xyuas tsis tu ncua tuaj yeem pab koj txheeb xyuas cov teeb meem ua ntej lawv dhau los ua teeb meem loj.
C.Kev xav zaum kawg
Hauv kev xaus, nws yog ib qho tseem ceeb kom nkag siab txog kev ua haujlwm thiab kev ua haujlwm ntawm relays hauv txhua qhov hluav taws xob.Lub peev xwm los txheeb xyuas thiab kuaj xyuas cov teeb meem yuam kev tuaj yeem txuag sijhawm, nyiaj txiag, thiab txawm tias tiv thaiv qhov xwm txheej txaus ntshai.Los ntawm kev tswj xyuas thiab ntsuas koj cov relays tsis tu ncua, koj tuaj yeem ua kom muaj kev nyab xeeb thiab kev ntseeg siab ntawm koj lub tsheb lossis lwm yam khoom siv hluav taws xob.Nrog kev pab ntawm tsab xov xwm no, tam sim no koj muaj kev nkag siab zoo txog kev sim, daws teeb meem, thiab hloov cov relay faulty.Nco ntsoov tham nrog tus tswv phau ntawv, phau ntawv qhia kev pabcuam, thiab cov cai hauv zos ua ntej sim ua haujlwm ntawm koj tus kheej.Nyob nyab xeeb thiab ua kom koj lub tshuab hluav taws xob ua haujlwm zoo.phau ntawv qhia kev pabcuam, thiab cov cai hauv zos.
Post lub sij hawm: Lub Xya hli ntuj-15-2023