Hauv kev lag luam automation, PLC (Programmable Logic Controller) yog ib qho tseem ceeb ntawm cov khoom tseem ceeb. Nws txoj haujlwm ruaj khov ncaj qha cuam tshuam rau kev ua haujlwm ntawm cov kab ntau lawm. Txawm li cas los xij, kev teeb tsa thiab kev ua haujlwm kom raug yog qhov tseem ceeb rau kev ua kom PLC qhov kev ua tau zoo. Kab lus no muab cov ncauj lus kom ntxaws txog PLC kev teeb tsa thiab kev teeb tsa, pab koj nkag siab zoo dua thiab siv cov txuj ci no.
I. Kev Npaj Ua Ntej
Ua ntej pib PLC installation thiab commissioning, kev npaj txhij txhua yog qhov tseem ceeb. Ua ntej, nkag siab tob txog PLC lub luag haujlwm thiab kev ua haujlwm tshwj xeeb kom paub meej meej txog nws cov qauv kev ua haujlwm thiab kev ua haujlwm. Qhov thib ob, paub meej txog cov khoom siv uas xav tau, cov khoom seem, thiab cov ntaub ntawv thev naus laus zis, xyuas kom tseeb tias lawv cov qauv, qhov ntau, thiab cov lus qhia tshwj xeeb ua tau raws li qhov yuav tsum tau ua. Nyob rau tib lub sijhawm, tshuaj xyuas kev ua haujlwm ntawm cov khoom siv no thiab cov khoom siv kom ntseeg tau tias lawv ua haujlwm zoo. Thaum kawg, sib piv PLC lub cev nrog phau ntawv kom paub meej tias nws tsis muaj qhov tsis xws luag.
II. Installation thiab Commissioning
1. Simulation Method Commissioning
Txoj kev simulation yog ib txoj hauv kev ua haujlwm zoo. Nws suav nrog kev siv cov hloov pauv hloov mus simulate cov tswv yim ntawm cov khoom siv, cov khoom siv me me los simulate cov khoom siv ntau lawm relays thiab cov contactors, thiab lawv cov neeg koom tes los simulate cov lus tawm tswv yim ntawm cov khoom siv thaum ua haujlwm. Txoj kev no ua rau muaj txiaj ntsig zoo dua - lub ntiaj teb cov xwm txheej, qhia seb PLC puas tuaj yeem pom cov laj thawj tsis raug.
2. quab yuam-Setting Method Debugging
Txoj kev yuam- teeb tsa txoj kev siv PLC qhov yuam kev - teeb tsa muaj nuj nqi. Rau cov neeg kho tshuab kev sib cuag (switches) hauv qhov kev pab cuam uas koom nrog cov khoom siv hauv teb, txoj kev no yuam kom lawv mus rau "ON" lossis "OFF" kom yuam kev ua haujlwm. Txoj kev no yog ceev, yooj yim, thiab yuav tsum tsis muaj nqi ntxiv.
III. Cov kev xav tau ntawm PLC
1. Cov khoom siv hluav taws xob yuav tsum tau muab los ntawm cov kab tseem ceeb ruaj khov lossis cov khoom noj tshwj xeeb los ntawm substation busbar kom ntseeg tau tias qhov hluav taws xob zoo rau PLC.
2. Siv cov twisted -pair cables rau cov kab hluav taws xob, nrog rau qhov hla -sectional cheeb tsam tsis pub tsawg tshaj 2 square millimeters. Tsis tas li ntawd, cais cov khoom siv hluav taws xob yuav tsum tau siv rau CPU thiab I / O loads thaum twg los tau.
3. Thaum lub hwj chim mov suab nrov dhau lawm, ib qho kev sib cais transformer yuav tsum tau txuas nrog kom tsis txhob muaj suab nrov cuam tshuam los ntawm PLC. Tsis tas li ntawd, thaum siv ib qho kev sib cais transformer thiab qis - dhau lim, lub mains voltage yuav tsum xub dhau los ntawm kev rho tawm transformer thiab qis - dhau lim ua ntej yuav qhia rau PLC. Lub tshuab hluav taws xob yuav tsum siv ob npaug -shielded isolation technology, nrog rau cov ntaub thaiv npog thib ob txuas nrog cov kab nruab nrab kom cais kev cuam tshuam los ntawm cov khoom siv hluav taws xob sab nraud.
4. Txhawm rau tiv thaiv lub zog hluav taws xob overvoltages los ntawm kev nkag mus rau PLC, txuas cov varistors lossis surge arresters rau PLC's AC input terminals. Xyuas kom cov khoom siv hluav taws xob no thiab PLC cov khoom siv hauv av yog cais hauv av.
Qhov kev ncua deb ntawm PLC thiab cov kab hluav taws xob hauv lub txee yuav tsum tshaj 20mm.
IV. Kev Tiv Thaiv Kev Tiv Thaiv
1. Kev teeb tsa ib puag ncig:Xyuas kom qhov kub thiab txias nyob nruab nrab ntawm 0℃thiab 55 degree, zam qhov kub ntawm - kub lossis qis - qhov kub thiab txias. Tib lub sijhawm, tiv thaiv kev ya raws, corrosion, thiab kev vibration. Cia kom deb ntawm siab - cov kab hluav taws xob thiab lwm yam khoom siv cuam tshuam.
2. Fais fab thiab av xaim:Txuas cov hluav taws xob thiab cov xaim hauv av kom raug, tswj kom muaj qhov sib txawv txaus kom txo qis kev cuam tshuam. Cov kab hluav taws xob yuav tsum tau khaws cia kom txaus sib cais los ntawm cov kab teeb liab tswj. Thaum siv high - cov khoom siv fais fab, teeb tsa cov hloov pauv hloov pauv los tiv thaiv PLC.
3. Output Terminals:Xyuas kom txhua qhov tso zis davhlau ya nyob twg txuas nrog lub snubber diode kom tsis txhob muaj qhov hluav taws xob siab thaum thauj cov contactor coils qhib los ntawm kev puas tsuaj rau PLC lub transistors.
4. Input Terminals:Txhua lub input davhlau ya nyob twg yuav tsum tau txuas nrog lub dav hlau dav dav (COM) ua haujlwm. Txawm li cas los xij, nco ntsoov tias cov khoom siv dav dav dav dav yuav tsum tsis txhob txuas nrog cov khoom siv dav dav (COM).
5. PLC Debugging:Tom qab kev teeb tsa, ua tiav kev debugging kom sai txheeb xyuas thiab daws teeb meem. Ua tib zoo saib xyuas cov ntsiab lus thaum lub sij hawm debugging kom ntseeg tau tias txhua txoj haujlwm ua haujlwm raug.
Los ntawm kev ua raws li cov lus qhia saum toj no, PLC kev teeb tsa thiab kev debugging ua tau ncaj nraim. Rau cov neeg nyeem kawm txog kev lag luam automation thiab lwm yam kev lag luam, kab lus no muab cov lus qhia ntxaws thiab siv tau. Los ntawm kev nkag siab thiab siv qhov kev paub no, koj yuav zoo dua tus tswv PLC kev teeb tsa thiab kev paub daws teeb meem, ua kom muaj kev ruaj ntseg ntawm cov khoom siv automation.