Umphakeli wezinto ezisekelayo zesiguquli sefrikhwensi ukukhumbuza ukuthi isiguquli sefrikhwensi iyithuluzi lokulawula amandla kagesi elisebenzisa umsebenzi wokucisha wamadivaysi esemiconductor yamandla ukuguqula ukunikezwa kwamandla kagesi kwenye ifrikhwensi. Ingakwazi ukufeza ukuqala okuthambile, ukulawulwa kwesivinini sokuguqulwa kwemvamisa, ukuthuthukisa ukunemba kokusebenza, ukushintsha isici samandla, ukuvikelwa kwe-overcurrent/overvoltage/overload kanye neminye imisebenzi yamamotor asynchronous AC.
Ikakhulukazi esetshenziswa ekusetshenzisweni kwamafeni namaphampu amanzi. Ukuze kuqinisekiswe ukwethembeka kokukhiqizwa, imishini ehlukahlukene yokukhiqiza iklanywa ngenani elithile lemali eningi uma ifakwe amadrayivu wamandla. Lapho injini ingakwazi ukusebenza ngomthwalo ogcwele, ngaphezu kokuhlangabezana nezidingo zokushayela amandla, i-torque eyeqile ikhulisa ukusetshenziswa kwamandla asebenzayo, okuholela ekumoshweni kwamandla kagesi. Indlela yendabuko yokulawula isivinini yemishini efana namafeni namaphampu iwukulungisa umthamo wokuphakelwa komoya kanye namanzi ngokulungisa ukuvuleka kwe-inlet noma i-outlet baffles nama-valve. Amandla okufakwayo aphakeme, futhi inani elikhulu lamandla liyasetshenziswa enqubweni yokunqamula ama-baffle nama-valve. Uma usebenzisa ukulawulwa kwesivinini esishintshashintshayo, uma isidingo sezinga lokugeleza sincishisiwe, imfuneko ingahlangatshezwana naye ngokunciphisa isivinini sephampu noma ifeni. Ngezansi kunezindlela eziyisisekelo zokususa iphutha iziguquli ezivamile.
Izindlela eziyisisekelo nezinyathelo zokususa iphutha iziguquli zemvamisa:
1, Awekho amandla okulayisha ekuhlolweni kwesiguquli semvamisa
1. Gcoba itheminali yaphansi yesiguquli sefrikhwensi.
2. Xhuma itheminali yokufaka amandla yesiguquli sefrikhwensi kugesi ngokusebenzisa iswishi yokuvikela ukuvuza.
3. Hlola ukuthi ukuboniswa kwefekthri kwefasitela lokubonisa i-frequency converter kuyinto evamile. Uma ingalungile, kufanele isethwe kabusha. Uma kungenjalo, ukubuyisela noma ukushintshanisa kuyadingeka.
4. Ujwayelene nezinkinobho zokusebenza zesiguquli sefrikhwensi. Isiguquli esijwayelekile sinokhiye abayisithupha: RUN, STOP, PROG, DATAPENTER, UP, ▲, kanye ne-DOWN. Izincazelo zokhiye bokusebenza beziguquli ezihlukene zefrikhwensi ziyefana. Ngaphezu kwalokho, ezinye iziguquli zefrikhwensi nazo zinezikhiye zokusebenza ezifana ne-MONITOR PLAY, RESET, JOG, kanye ne-SHIFT.
2, Idrayivu yefrikhwensi eguquguqukayo enemoto egijima ngaphandle komthwalo
1. Lapho usetha amandla kanye nenombolo yezigxobo zenjini, ukusebenza kwamanje kwesiguquli semvamisa kufanele kucatshangelwe ngokuphelele.
2. Setha ubukhulu befrikhwensi yokuphumayo, imvamisa eyisisekelo, nezici zetorque zesiguquli sefrikhwensi. Iziguquli zemvamisa ezijwayelekile zifakwe amajika amaningi e-VPf abasebenzisi abangakhetha kuwo. Abasebenzisi kufanele bakhethe ijika elifanele le-VPf ngokusekelwe kumvelo yomthwalo lapho bewusebenzisa. Uma kuyi-fan ne-pump load, ikhodi yokusebenza ye-torque yesiguquli se-frequency kufanele isethelwe ku-torque eguquguqukayo kanye nezici zokusebenza kwetorque encishisiwe. Ukuze uthuthukise ukusebenza kwesivinini esiphansi kwesiguquli semvamisa ngesikhathi sokuqala futhi uqinisekise ukuthi ukuphuma kwe-torque ngemoto kungahlangabezana nezidingo zokuqalisa umthwalo wokukhiqiza, kuyadingeka ukulungisa i-torque yokuqala. Kuhlelo lokulawula isivinini esishintshashintshayo samamotho asynchronous, ukulawulwa kwetorque kuyinkimbinkimbi. Kububanzi obuphansi befrikhwensi, umthelela wokumelana nokuvuza akukwazi ukuzitshwa. Uma i-VPf isagcinwa njalo, i-flux kazibuthe izokwehla, ngaleyo ndlela inciphise i-torque ephumayo ye-motor. Ngakho-ke, isinxephezelo esifanele kufanele senziwe ku-voltage ebangeni lefrikhwensi ephansi ukuze kuthuthukiswe i-torque. Ngokuvamile, iziguquli zefrikhwensi zisethwa mathupha futhi zinxeshezelwe ngabasebenzisi.
3. Setha isiguquli sefrikhwensi kumodi yayo yokusebenza yekhibhodi eyakhelwe ngaphakathi, cindezela izinkinobho zokugijima bese umisa, bese ubheka ukuthi injini ingaqala futhi ime ngokujwayelekile.
4. Ukujwayelana namakhodi okuvikela lapho isiguquli sefrikhwensi singasebenzi kahle, bheka amanani asefekthri okudluliselwa kokuvikela okushisayo, qaphela amanani asethiwe okuvikela ukugcwala ngokweqile, futhi uwaguqule uma kudingeka. Umsebenzisi wesiguquli sefrikhwensi angasetha umsebenzi we-electronic thermal relay yesiguquli sefrikhwensi ngokuya ngemanuwali yomsebenzisi yesiguquli sefrikhwensi. Uma i-output yamanje yesiguquli sefrikhwensi idlula amandla ayo avumelekile, ukuvikela okudlulele kwesiguquli sefrikhwensi kuzonqamula okukhiphayo kwesiguquli sefrikhwensi. Ngakho-ke, umkhawulo ophezulu we-electronic thermal relay yesiguquli sefrikhwensi ngeke udlule umkhawulo ophumayo ovunyelwe wamanje wesiguquli sefrikhwensi.
3, Ukusebenza kwesivivinyo sokulayisha
1. Sebenzisa ngokuzenzela inkinobho yokumisa ukusebenza kuphaneli yokuguqula amaza, bheka inqubo yokuma kokusebenza kwemoto kanye newindi lokubonisa lesiguquli sefrikhwensi, futhi ubone ukuthi azikho yini izinto ezingavamile.
2. Uma isenzo sokuvikela i-overcurrent senzeka kusiguquli semvamisa phakathi nenqubo yokuqala nokumisa injini, isikhathi sokusheshisa nesokuncishiswa kwe-P kufanele sisethwe kabusha. Ukusheshisa kwe-motor ngesikhathi sokusheshisa nokwehliswa kuncike ku-torque yokusheshisa, kuyilapho izinga lokushintsha imvamisa ye-converter frequency ngesikhathi sokuqala nokubhuleka kusethwa ngumsebenzisi. Uma umzuzu we-inertia ye-motor noma umthwalo wemoto ushintsha, kungase kube khona i-torque yokusheshisa enganele lapho isheshisa noma yehla ngokuya ngesilinganiso sokushintsha imvamisa esethiwe ngaphambili, okuholela esitokisini semoto, okungukuthi, isivinini semoto asixhunyaniswa nemvamisa yokuphuma kwesiguquli semvamisa, okubangela ukuphindaphindeka noma ukugcwala ngokweqile. Ngakho-ke, kuyadingeka ukusetha ukusheshisa nokunciphisa isikhathi ngokufanele ngokusekelwe kumzuzu we-inertia nomthwalo wemoto, ukuze izinga lokushintsha imvamisa ye-inverter likwazi ukuhlanganiswa nesilinganiso sokushintsha isivinini semoto.