Raws li cov khoom siv hluav taws xob thiab hluav taws xob siv hluav taws xob uas siv cov khoom siv zaus hloov pauv thiab microelectronics thev naus laus zis, qhov hloov pauv zaus (tom qab no hu ua VFD) kuj muaj qee yam kev cai rau kev siv ib puag ncig. Yog tias VFD xav kom siv tau zoo thiab nyab xeeb, cov teeb meem hauv qab no yuav tsum tau txiav txim siab, txwv tsis pub nws yuav ua rau muaj teeb meem loj hauv kev ua haujlwm thiab kev nyab xeeb.
1. Lub cev ib puag ncig
1. Ambient kub:
Thaum qhov kub thiab txias sib txawv ntawm daim ntawv thov qhov chaw loj, condensation yuav tshwm sim hauv VFD, uas yuav txo tau qhov kev ua tau zoo ntawm kev rwb thaiv tsev thiab txawm tias muaj qhov tshwm sim ntawm luv luv Circuit Court. Yog li ntawd, thaum tsim nyog, peb yuav tsum ntxiv cov khoom siv desiccant thiab cua sov rau hauv lub thawv.
2. Corrosive gas:
Yog tias muaj cov roj corrosive siab nyob rau hauv ib puag ncig siv, nws yuav tsis tu ncua corrode cov hlau lead, luam ntawv Circuit Court boards, thiab lwm yam ntawm cov khoom, thiab tseem yuav ua rau kom cov khoom siv yas ua kom muaj zog, ua rau txo qis hauv rwb thaiv tsev. Nyob rau hauv cov ntaub ntawv no, peb yuav tsum ua lub thawv tswj rau hauv ib tug kuj kaw qauv thiab ventilate nws los ntawm tshwj xeeb tsim vents.
3. Kev vibration thiab poob siab:
Thaum lub txee tswj tau nruab nrog VFD raug rau cov neeg kho tshuab kev co thiab kev poob siab, nws yuav ua rau tsis muaj hluav taws xob sib cuag. Nyob rau lub sijhawm no, ntxiv rau kev txhim kho lub zog ntawm lub zog ntawm lub txee tswj thiab ua kom tsis txhob muaj kev vibration thiab cuam tshuam, cov khoom siv los tiv thaiv kev co yuav tsum tau siv los kho cov khoom uas ua rau muaj kev vibration, xws li cov hluav taws xob hloov hluav taws xob sab nraud thiab sab hauv lub txee tswj. Tom qab cov khoom siv tau ua haujlwm rau lub sijhawm, nws yuav tsum tau kuaj xyuas thiab tswj xyuas.
4. Ua haujlwm kub:
VFD muaj cov khoom siv hluav taws xob muaj zog hauv lub cev, uas yooj yim cuam tshuam los ntawm kev ua haujlwm kub. Cov khoom feem ntau xav tau 0-55 degree , tab sis txhawm rau ua kom muaj kev nyab xeeb thiab txhim khu kev qha, nws yuav tsum tau txiav txim siab tawm hauv chav thaum siv nws. Nws yog qhov zoo tshaj los tswj nws hauv qab 40 degree. Nyob rau hauv lub thawv tswj, VFD feem ntau yuav tsum tau ntsia rau sab sauv ntawm lub thawv, thiab nruj me ntsis raws li qhov yuav tsum tau ntawm installation nyob rau hauv cov khoom phau ntawv. Nws tsis raug tso cai rau nruab cov khoom siv cua sov lossis cov khoom siv uas yooj yim rau cua sov ze rau hauv qab ntawm VFD.
2. Hluav taws xob ib puag ncig
1. Tiv thaiv electromagnetic cuam tshuam:
Thaum lub sijhawm ua haujlwm ntawm VFD, ntau qhov cuam tshuam electromagnetic tsis tau tsim nyob ib puag ncig nws vim kev hloov kho thiab hloov pauv zaus. Cov hluav taws xob hluav taws xob ntau zaus no muaj qee yam cuam tshuam nrog cov twj paj nruag thiab khoom siv nyob ze. Yog li ntawd, cov twj paj nruag thiab cov tshuab hluav taws xob hauv lub txee yuav tsum siv cov plhaub hlau los tiv thaiv kev cuam tshuam ntawm VFD ntawm cov twj paj nruag. Tag nrho cov khoom yuav tsum muaj kev ntseeg siab hauv av. Tsis tas li ntawd, shielded tswj cables yuav tsum tau siv rau kev sib txuas ntawm cov khoom siv hluav taws xob, cov twj paj nruag thiab cov ntsuas, thiab cov txheej thaiv thaiv yuav tsum yog hauv av. Yog tias qhov cuam tshuam ntawm electromagnetic tsis ua haujlwm zoo, tag nrho cov kab ke feem ntau yuav ua haujlwm tsis zoo, ua rau lub tshuab ua haujlwm tsis zoo lossis puas.
2. Tiv thaiv overvoltage ntawm qhov kawg input:
Lub VFD lub zog tawm tswv yim kawg feem ntau muaj kev tiv thaiv overvoltage, tab sis yog tias qhov hluav taws xob siab ntawm cov tswv yim kawg ua haujlwm ntev, VFD cov tswv yim kawg yuav puas. Yog li ntawd, nyob rau hauv kev siv tiag tiag, nws yog ib qho tsim nyog los xyuas qhov input voltage ntawm VFD, txawm tias nws yog ib-theem lossis peb-theem, thiab qhov ntsuas hluav taws xob ntawm VFD. Tshwj xeeb, thaum lub hwj chim mov voltage tsis ruaj tsis khov, yuav tsum tau siv lub tshuab hluav taws xob stabilizing, txwv tsis pub muaj qhov tshwm sim loj heev.
3. Hauv av
Yog tias koj xav kom ntseeg tau tias qhov kev xav tau ntawm kev tswj hwm thiab lub peev xwm los txo cov suab nrov, qhov tseem ceeb tshaj plaws yog kom ua raws li VFD. Qhov me me ntawm cov av tsis kam ntawm VFD grounding davhlau ya nyob twg E (G), qhov zoo dua. Qhov chaw hla ntawm cov xaim hauv av yuav tsum siab dua lossis sib npaug ntawm 2mm2, thiab qhov ntev yuav tsum tsis pub tshaj 20m. Lub shielding txheej ntawm lub teeb liab input kab yuav tsum tau txuas nrog E (G), thiab lwm yam kawg yuav tsum tsis txhob txuas rau hauv av davhlau ya nyob twg, txwv tsis pub nws yuav ua rau lub teeb liab hloov thiab ua rau lub cev oscillate. Lub VFD thiab lub txee tswj yuav tsum tau txuas nrog hluav taws xob. Yog tias qhov kev teeb tsa tiag tiag yog qhov nyuaj, cov tub ntxhais tooj liab tuaj yeem siv rau kev sib txuas. Cov khoom siv hluav taws xob thiab VFD tsis tuaj yeem nyob hauv tib qhov chaw thiab tsis tuaj yeem sib koom hauv av.