Tisanauze vuto ili, choyamba, tiyenera kumveketsa bwino za cholinga cha servo mota, wachibale ndi injini wamba, servo motor makamaka ntchito pa malo olondola, kotero ife kawirikawiri kunena servo ulamuliro, kwenikweni, ndi kuwongolera malo a servo motor.M'malo mwake, servo motor imagwiritsanso ntchito njira zina ziwiri, ndiye kuti, kuwongolera liwiro ndi torque, koma kugwiritsa ntchito kumakhala kochepa.Kuwongolera liwiro kumazindikiridwa ndi ma frequency converter.Kuwongolera liwiro ndi mota ya servo nthawi zambiri kumagwiritsidwa ntchito pothamangitsa komanso kutsika kapena kuwongolera liwiro, chifukwa potengera ma frequency converter, mota ya servo imatha kufikira masauzande ambiri mkati mwa mamilimita angapo.
Chifukwa servo ndi yotsekedwa-loop, liwiro ndilokhazikika kwambiri.Kuwongolera kwa torque kumakhala kowongolera ma torque a servo motor, komanso chifukwa chakuyankha mwachangu kwa servo motor.Kugwiritsa ntchito mitundu iwiri ya kuwongolera, mutha kutenga servo drive ngati chosinthira pafupipafupi, nthawi zambiri ndi kuwongolera kwa analogi.
Kugwiritsa ntchito kwakukulu kwa servo mota kapena kuwongolera koyimitsa, kotero pepalali limayang'ana kwambiri kuwongolera kwa PLC kwa servo mota.Kuwongolera malo kuli ndi miyeso iwiri yakuthupi yomwe iyenera kuyendetsedwa, ndiko kuti, liwiro ndi malo.Makamaka, ndikuwongolera momwe injini ya servo imafikira pomwe ili ndikuyimitsa molondola.
Woyendetsa servo amawongolera mtunda ndi liwiro la mota ya servo ndi ma frequency ndi kuchuluka kwa ma pulse omwe amalandira.Mwachitsanzo, tidavomereza kuti injini ya servo itembenuza ma 10,000 aliwonse.Ngati PLC imatumiza ma pulse 10,000 pamphindi, ndiye kuti injini ya servo imamaliza kuzungulira pa 1r / min, ndipo ngati itumiza ma pulse 10,000 pamphindi, ndiye kuti servo motor imamaliza kuzungulira pa 60r / min.
Chifukwa chake, PLC ndi kudzera pakuwongolera kugunda kwa ma servo motor, njira yakuthupi yotumizira kugunda, ndiko kuti, kugwiritsa ntchito PLC transistor output ndiyo njira yomwe imagwiritsidwa ntchito kwambiri, nthawi zambiri imakhala yotsika PLC pogwiritsa ntchito njira iyi.Ndipo pakati ndi mkulu mapeto PLC ndi kulankhula nambala ndi pafupipafupi pulses kwa servo dalaivala, monga Profibus-DP CANopen, MECHATROLINK-II, EtherCAT ndi zina zotero.Njira ziwirizi ndi njira zosiyana zogwiritsira ntchito, zomwe zimafanana, za mapulogalamu, ndizofanana.Kupatula kulandila kwa pulse, kuwongolera kwa servo drive ndikofanana ndendende ndi inverter.
Polemba mapulogalamu, kusiyana kumeneku ndi kwakukulu kwambiri, Japanese PLC ndiyogwiritsa ntchito njira yophunzitsira, ndipo European PLC ndiyogwiritsa ntchito mawonekedwe a midadada yogwira ntchito.Koma kwenikweni ndi chimodzimodzi, monga kulamulira servo kupita mtheradi malo, muyenera kulamulira PLC linanena bungwe njira, kugunda nambala, kugunda pafupipafupi, mathamangitsidwe ndi deceleration nthawi, ndipo muyenera kudziwa pamene servo dalaivala udindo watha. , kaya kukwaniritsa malire ndi zina zotero.Ziribe kanthu kuti PLC yamtundu wanji, sichinthu choposa kuwongolera kuchuluka kwakuthupi komanso kuwerenga kwa magawo oyenda, koma njira zosiyanasiyana zoyendetsera PLC sizofanana.
Zomwe zili pamwambapa ndi chidule cha PLC (programmable controller) control servo motor, ndiye timamvetsetsa kukhazikitsidwa kwa njira zodzitetezera za PLC.
Wowongolera pulogalamu ya PLC wakhala akugwiritsidwa ntchito kwambiri m'magawo osiyanasiyana, chifukwa mkati mwake muli zida zambiri zamagetsi, zosavuta kukhudzidwa ndi kusokonezedwa kwa zida zina zamagetsi, mphamvu yamagetsi yamagetsi, kutentha kozungulira ndi chinyezi, kugwedezeka kwamphamvu ndi zinthu zina. zimakhudza ntchito yanthawi zonse ya wolamulira wa PLC, izi nthawi zambiri zimanyalanyazidwa ndi anthu ambiri.Ngakhale pulogalamuyo ili bwino, malinga ndi ulalo wa unsembe sulabadira, pambuyo debugging, kuthamanga adzabweretsa zolephera zambiri.Ndikuyenda mozungulira kuyesera kuchisamalira.
Izi ndi zodzitetezera pakuyika:
1. PLC unsembe chilengedwe
a, kutentha kozungulira kumachokera ku 0 mpaka 55 madigiri.Ngati kutentha kuli kwakukulu kapena kotsika kwambiri, zigawo zamagetsi zamkati sizigwira ntchito bwino.Tengani njira zoziziritsira kapena kutentha ngati kuli kofunikira
b, chinyezi chozungulira ndi 35% ~ 85%, chinyezi ndichokwera kwambiri, madutsidwe amagetsi azinthu zamagetsi amawonjezedwa, mosavuta kuchepetsa mphamvu yamagetsi yamagetsi, yapano ndi yayikulu kwambiri komanso kuwonongeka kwapang'onopang'ono.
c, sangakhoze kuikidwa mu kugwedera pafupipafupi 50Hz, matalikidwe ndi oposa 0.5mm, chifukwa kugwedera matalikidwe ndi lalikulu kwambiri, chifukwa mu gulu mkati dera la pakompyuta zigawo zikuluzikulu kuwotcherera, kugwa.
d, mkati ndi kunja kwa bokosi lamagetsi liyenera kukhala kutali kwambiri ndi mphamvu ya maginito ndi magetsi (monga thiransifoma yolamulira, mphamvu yaikulu ya AC contactor, capacitor yaikulu, etc.) (monga frequency converter, servo driver, inverter, thyristor, etc.) zida zowongolera.
e, pewani kutsitsa m'malo okhala ndi fumbi lachitsulo, dzimbiri, mpweya woyaka, chinyezi, ndi zina
f, ndi bwino kuyika zida zamagetsi kumtunda kwa bokosi lamagetsi, kutali ndi gwero la kutentha, ndipo ganizirani kuzizira ndi kutuluka kwa mpweya kunja ngati kuli kofunikira.
2. Mphamvu zamagetsi
a, kuti alowe molondola PLC magetsi, pali mfundo kukhudzana mwachindunji.Monga Mitsubishi PLC DC24V;AC voteji ndi athandizira kwambiri kusintha, osiyanasiyana 100V ~ 240V (kuloledwa osiyanasiyana 85 ~ 264), pafupipafupi ndi 50/60Hz, palibe chifukwa kukoka lophimba.Ndi bwino kugwiritsa ntchito kudzipatula thiransifoma kupereka mphamvu PLC.
b, kwa PLC linanena bungwe DC24V zambiri ntchito anawonjezera ntchito gawo mphamvu magetsi, kunja atatu waya kachipangizo mphamvu magetsi kapena zolinga zina, ngakhale linanena bungwe DC24V magetsi ali odzaza ndi yochepa dera chitetezo zipangizo ndi mphamvu zochepa.Ndikofunikira kuti sensa yakunja yamawaya atatu igwiritse ntchito magetsi osinthika odziyimira pawokha kuti ateteze kuzungulira kwafupipafupi, komwe kungayambitse kuwonongeka kwa PLC ndikubweretsa zovuta zosafunikira.
3. Wiring ndi njira
Mukayika mawaya, iyenera kutsekedwa ndi piritsi lozizirira ndikulumikizidwa ndi zolowetsa ndi zotulutsa za PLC.Iyenera kukhala yothina komanso yotetezeka.
Pamene athandizira ndi chizindikiro cha DC, monga magwero ozungulira kusokoneza ndi zina, ayenera kuganizira chingwe chotetezedwa kapena zopotoka awiri, malangizo Intaneti sayenera kufanana ndi chingwe mphamvu ndipo sangakhoze kuikidwa mu mzere mzere kagawo, mzere chubu, kuteteza kusokoneza.
4. Pansi
Kukana kwapansi sikuyenera kukhala kwakukulu kuposa 100 Ohms.Ngati muli pansi mu bokosi lamagetsi, gwirizanitsani mwachindunji pansi.Osailumikiza ku bar yapansi mutayilumikiza ku ground bar ya olamulira ena (monga ma frequency converters).
5. Zina
a, PLC sangakhale ofukula, yopingasa malinga ndi unsembe, monga PLC ndi kusala, malinga ndi unsembe wa zomangira kumangitsa, osati lotayirira, ngati kugwedezeka, kuwonongeka kwa zipangizo zamagetsi mkati, ngati njanji khadi, ayenera kusankha oyenerera khadi njanji, choyamba kukoka loko ndiyeno mu njanji khadi, ndiyeno kukankhira loko, pambuyo PLC Mtsogoleri sangathe kusuntha mmwamba ndi pansi.
b, ngati mtundu wa relay linanena bungwe, linanena bungwe mphamvu panopa ndi 2A, kotero mu katundu waukulu (monga DC clutch, valavu solenoid), ngakhale panopa ndi zosakwana 2A, ayenera kuganizira kugwiritsa ntchito relay kusintha.
Nthawi yotumiza: May-20-2023