I. Kev Taw Qhia
Nrog rau txoj kev loj hlob sai ntawm kev lag luam automation technology, PLCs (Programmable Logic Controllers) ua lub luag haujlwm tseem ceeb ntawm kev lag luam automation tswj tshuab, thiab lawv cov kev ruaj ntseg thiab kev ntseeg siab yog qhov tseem ceeb rau kev ua haujlwm ntawm tag nrho cov kab ke. Txawm li cas los xij, vim muaj ntau yam, PLC cov ntsiab lus tso tawm tej zaum yuav ua haujlwm tsis zoo, ua rau lub cev ua haujlwm tsis zoo. Tsab ntawv xov xwm no yuav ua tib zoo tshawb nrhiav qhov ua rau PLC tso tawm qhov kev puas tsuaj, cov txheej txheem tshawb pom, thiab kho cov kev ntsuas, thiab muab cov tswv yim daws teeb meem los pab cov engineers thiab cov kws tshaj lij daws teeb meem sai thiab zoo.
II. Feem ntau ua rau PLC Output Point puas
Qhov ua rau PLC tso zis taw tes kev puas tsuaj yog ntau haiv neeg, tab sis lawv tuaj yeem raug sau tseg rau hauv cov pawg hauv qab no:
Overloading: PLC cov ntsiab lus tso zis muaj peev xwm thauj khoom tshwj xeeb. Yog tias qhov ntsuas ntsuas tau dhau los rau lub sijhawm ntev, nws tuaj yeem ua rau cov ntsiab lus tso tawm kom sov thiab hlawv. Piv txwv li, PLCs nrog transistor outputs feem ntau muaj peev xwm ntawm 500-700 mA, thaum cov neeg uas muaj relay outputs feem ntau muaj peev xwm ntawm 2 A.
Kev sib txuas rau High-Voltage lossis Highly Inductive Equipment: Thaum PLC cov khoom siv hluav taws xob txuas nrog siab -voltage lossis inductive cov cuab yeej siv siab, surges thiab overcurrent tej yam kev mob tshwm sim thaum lub sij hawm cov khoom pib, kaw, los yog ua hauj lwm yooj yim ua rau hluav taws xob shocks rau lub PLC tso zis Circuit Court, ua rau puas.
Kev sib txuas tsis zoo ntawm lub davhlau ya nyob twg: Vim muaj qhov tsis zoo ntawm cov khoom siv hauv lub txee tswj, muaj kev vibration ntau ntxiv thaum lub sijhawm ua haujlwm, thiab cov khoom siv coj los siv, cov hlau terminals lossis cov terminals tuaj yeem xoob, ua rau kev sib cuag tsis zoo thiab tiv thaiv PLC cov ntsiab lus ntawm kev ua haujlwm zoo.
PLC cuam tshuam: Hauv kev lag luam automation systems, PLCs yuav raug cuam tshuam rau sab nraud lossis sab hauv, ua rau muaj kev ua haujlwm tsis zoo lossis kev puas tsuaj rau cov ntsiab lus tawm.
III. Txoj hauv kev txhawm rau txheeb xyuas PLC cov ntsiab lus tso tawm puas
Thaum PLC tso zis taw tes ua haujlwm tsis zoo, yuav tsum tau ua ntau yam kev ntsuam xyuas txhawm rau txheeb xyuas qhov txhaum. Cov hauv qab no yog qee qhov kev sim ntau yam:
Kev soj ntsuam ua ntej: Ua ntej, xyuas seb lub PLC qhov tso zis qhov taw qhia teeb pom kev zoo li cas. Yog hais tias lub teeb tsis nyob rau, qhov teeb meem yuav pw nrog cov zis taw tes nws tus kheej los yog nrog rau sab nraud kev twb kev txuas thaiv. Nyob rau hauv rooj plaub no, siv lub multimeter los yog cov cuab yeej zoo sib xws los xyuas qhov tseeb ntawm cov xaim sab nraud.
Txoj Kev Hloov Hloov: Yog tias qhov kev tshuaj ntsuam xyuas ua ntej tsis txheeb xyuas qhov txhaum, txoj kev hloov pauv tuaj yeem siv tau. Hloov qhov xav tias qhov tso zis tsis raug nrog lwm tus paub txog - cov zis tawm tau zoo thiab saib seb lub kaw lus puas ua haujlwm li qub. Yog tias lub kaw lus rov ua haujlwm li qub, nws qhia tau tias qhov chaw tso tawm thawj zaug puas lawm.
Kev Ntsuas Online: Yog tias PLC txhawb nqa kev kuaj mob hauv online, txuas PLC rau lub khoos phis tawj siv software kho thiab rub tawm ncaj qha los saib xyuas cov xwm txheej ntawm cov zis I / O ntawm qhov kev kuaj mob online. Qhov no tso cai rau kev txheeb xyuas sai ntawm qhov chaw txhaum cai.
IV. Kho Kev Ntsuas rau PLC cov ntsiab lus tso zis puas
Thaum pom qhov yuam kev PLC cov zis tau raug txheeb xyuas, kev kho kom tsim nyog yuav tsum tau coj los daws qhov teeb meem. Cov hauv qab no yog qee txoj hauv kev kho kom zoo:
Hloov cov Output Point: Rau qhov chaw tso zis puas lawm, hloov nws nrog ib qho tshiab. Thaum hloov nws, xyuas kom koj xaiv ib yam khoom nrog tib tus qauv thiab cov lus qhia tshwj xeeb raws li cov ntsiab lus tso tawm thawj zaug, thiab xyuas kom meej tias cov xaim yog qhov tseeb.
Siv Spare Point: Thaum lub sij hawm tsim qauv, cov ntsiab lus seem yog feem ntau tshwj tseg los daws qhov ua tsis tiav. Thaum qhov chaw tso zis tsis ua haujlwm, qhov sib txuas lus tawm tswv yim / tso tawm muaj peev xwm raug muab rov qab mus rau qhov chaw seem, thiab qhov kev pab cuam tuaj yeem hloov kho raws li kev ua haujlwm zoo.
Txhim kho Circuit Design: Txhawm rau tiv thaiv qhov tsis zoo sib xws los ntawm kev rov ua dua, kev tsim hluav taws xob tuaj yeem ua kom zoo dua. Piv txwv li, thaum txuas cov ntsiab lus tso tawm mus rau siab - cov khoom siv hluav taws xob lossis cov khoom siv inductive siab, kev tiv thaiv xws li nruab nrab relays lossis cov khoom ruaj khov - xeev relays tuaj yeem ntxiv; rau cov cuab yeej uas nquag pib thiab nres, cov txheej txheem tsim tawm ntau dua, xws li transistor output modules, tuaj yeem txais yuav.
Txhim khu kev tu thiab tu: Kev saib xyuas tsis tu ncua thiab kev saib xyuas ntawm PLC kuj tseem ceeb heev rau kev tiv thaiv cov khoom tsis ua haujlwm. Qhov no suav nrog kev ntxuav cov plua plav, tshuaj xyuas cov kev sib txuas xoob, thiab tshuaj xyuas cov khoom rau kev laus. Tsis tas li ntawd, yuav tsum tau saib xyuas kom tsis txhob nthuav tawm PLC rau qhov chaw hnyav, xws li qhov kub thiab txias, cov av noo siab, lossis muaj zog electromagnetic cuam tshuam.
V. Xaus
Kev puas tsuaj rau PLC cov ntsiab lus tso tawm yog ib qho teeb meem tshwm sim hauv kev lag luam automation systems. Yuav kom daws tau qhov teeb meem no sai thiab ua tau zoo, nws yog ib qho tsim nyog yuav tau nkag siab zoo txog qhov ua rau kev puas tsuaj, kev tshawb nrhiav, thiab kev ntsuas kho. Los ntawm kev siv cov kev tiv thaiv tsim nyog thiab kev kho kom raws sijhawm, qhov tshwm sim ntawm PLC cov ntsiab lus tso tawm tsis ua haujlwm tuaj yeem txo qis, ua kom muaj kev ruaj ntseg ntawm kev lag luam automation systems. Nyob rau tib lub sijhawm, nws yog ib qho tseem ceeb kom kawm tsis tu ncua thiab paub cov thev naus laus zis tshiab thiab cov txheej txheem los hloov mus rau qhov kev txhim kho tas li thiab kev hloov pauv hauv kev lag luam automation technology.