Vuto la Kuchulukana kwa Mawaya mu Ma Panel Olamulira Mafakitale Amakono

Ngati mwakhala nthawi yayitali mu kabati yapakati yokonzedwa bwino (PLC) yomwe idamangidwa zaka zoposa zisanu zapitazo, mukudziwa bwino vuto la kuchuluka kwa mawaya. Kabatiyo ili ndi mawaya odzaza—odzaza kwambiri—omwe ali ndi mawaya osiyanasiyana, ambiri a iwo ali ndi zizindikiro zofanana za 24V DC kuchokera ku njanji yamagetsi yomweyo. Khadi lililonse lolowera limapeza waya wake wodzipereka kuchokera ku mzere wa block terminal. Njira iliyonse yotulutsira ili ndi njira yobwerera yomwe ikuwonetsa zovuta zolowera. Zotsatira zake ndi waya wolumikizira womwe ndi wokwera mtengo kupanga, wovuta kwambiri kuthetsa mavuto, komanso wovuta kusintha popanda kuyambitsa zolakwika zatsopano.

Ine ndekha ndaona gulu la malo owongolera magalimoto la 400-amp pomwe mawaya oyamba adatenga akatswiri awiri pafupifupi maola asanu ndi atatu kuti adziwe ngati pali vuto limodzi la njira yolowera lomwe pamapeto pake linakhala screw lotayirira pa block ya terminal. Dongosolo lozindikira matenda amenewo likanatenga mphindi zosakwana 30 mu gulu logawa la PLC lopangidwa bwino pogwiritsa ntchito ma block a terminal atatu okhala ndi ma cross-connection.

Ili si vuto longoganizira chabe. M'malo amakono opangira zinthu zamafakitale, kuchuluka kwa njira za PLC I/O kwawonjezeka kwambiri pamene makina owongolera akhala otsogola kwambiri. S7-1500 PLC kuchokera ku Siemens imatha kufikira ma I/O points 8192 osiyana pa ma racks angapo, ndipo mfundo iliyonse imafuna waya wotsekedwa pa PLC I/O module komanso field termination. Mukachulukitsa zimenezo ngakhale pang'ono—monga, ma I/O points 256—vuto loyang'anira mawaya limakhala lofunika kwambiri kwa womanga mapanelo ndi katswiri wokonza.

Zamagetsi za Ningbo J-Guang wakhala akupanga ndi kupanga ma blocks otsiriza okhala ndi kuchuluka kwakukulu makamaka pa ntchito zogawa za PLC kuyambira mu 2008, ndipo ndakhala nthawi yayitali ndikugwira ntchito mwachindunji ndi ogwirizanitsa makina owongolera ndi omanga mapanelo m'malo osiyanasiyana.Europe, North America, ndi Southeast Asia kumene mwachizolowezi mipiringidzo yomaliza kulephera ndi momwe mapangidwe a multi-deck stacking amathetsera zolephera zimenezo. Nkhaniyi ndi yofotokozera zomwe ndaphunzira zokhudza chifukwa chake ma terminal blocks a triple-deck okhala ndi cross-connection design akuyimira zamakono kwambiri pa mawaya ogawa a PLC, zomwe ukadaulo umafunika, komanso momwe mungasankhire chinthu choyenera malo anu okhazikitsa.

Kumvetsetsa Kapangidwe ka Mapangidwe Atatu a Deck Stacking

Cholepheretsa chachikulu cha ma terminal blocks achikhalidwe cha single-level mu ntchito zogawa za PLC ndi kusagwira bwino ntchito kwa malo. DIN41616 kapenaIEC 60947-7-1 Chipika cholumikizirana chimakhala ndi mulifupi wa module imodzi (nthawi zambiri 6.2 mm kapena 12 mm kutengera ndi momwe ikugwiritsidwira ntchito) ndipo chimapereka mulingo umodzi wolowera waya. Mukafunika kugawa 24V DC ku njira khumi ndi ziwiri zosiyana za PLC kuchokera ku njanji yamagetsi yofanana, mumafunika malo khumi ndi awiri a chipika cholumikizirana, zomwe zikutanthauza mulifupi wa module khumi ndi ziwiri wa malo a njanji ya DIN.

Ma block a ma terminal okhala ndi ma deck atatu amathetsa kusagwira bwino ntchito kwa malowa mwa kuyika ma level atatu odziyimira pawokha a waya mu mulifupi wa module imodzi. Kapangidwe kake kamagwiritsa ntchito bala yodziwika bwino yamagetsi yomwe imadutsa m'ma level onse atatu, koma level iliyonse imalekanitsidwa ndi magetsi pogwiritsa ntchito chotchingira kutentha, ndipo level iliyonse ili ndi malo ake olowera a waya. Zotsatira zake n'zakuti mutha kuletsa ma circuit atatu osiyana a waya—iliyonse yokhala ndi kulumikizana kwake kolowera ndi kutulutsa—mkati mwa DIN rail footprint yomwe block ya level imodzi ingafunike.

Chifukwa ma deki atatuwa amagawana bala limodzi lamagetsi koma ali ndi malo olumikizirana okhaokha, kasinthidwe ka triple-deck ndi kabwino kwambiri pakugawa kwa PLC komwe muli ndi basi yamagetsi kapena chizindikiro chofanana chomwe chimafalikira kupita kumalo osiyanasiyana. Busbar yodziwika bwino imalumikizana ndi top deck, ndipo nthambi zitatu zodziyimira pawokha kuchokera pakati ndi pansi pa deske. Mu 24V DC PLC input distribution distribution, izi zikutanthauza kuti triple-deck terminal block imodzi imatha kupereka njira zitatu zolowera kuchokera ku common feed imodzi - kuchepetsa kutalika kwa njanji ya DIN yofunikira ndi magawo awiri mwa atatu.

Zotsatira zake pa chuma cha panel build ndi zofunika kwambiri. Mu panel ya 256-I/O PLC, kusintha kuchoka pa single-level kupita ku triple-deck terminal blocks kuti magetsi agawidwe kungachepetse chiwerengero cha terminal blocks ndi malo 60-80, zomwe zikutanthauza kuti kutalika kwa njanji ya DIN kwachepetsedwa, kukula kwa panel enclosure (ndi mtengo wake), komanso kuchuluka kwa waya kwachepetsedwa. Tagwira ntchito ndi omanga panel omwe achepetsa nthawi yawo yomanga panel ndi maola 4-6 pa panel iliyonse atasintha kupita ku triple-deck architecture ya PLC distribution sections.

Kapangidwe ka Cross-Connection: Kugawa Zizindikiro Popanda Chisokonezo cha Waya

Kapangidwe ka ma triple-deck ndi theka lokha la yankho la kugawa kwa PLC yochuluka kwambiri. Gawo lachiwiri ndi kapangidwe ka kulumikizana kwapakati—dongosolo la mipiringidzo yamkati ya basi ndi mipiringidzo yakunja ya jumper yomwe imalola kuti ma terminal level angapo alumikizane ndi magetsi mwanjira yolamulidwa komanso yosinthika. Apa ndi pomwe luso laukadaulo la wopanga ma terminal block limaonekera bwino.

Pankhani ya kugawa kwa PLC, kulumikizana kwa cross-connection kumatanthauza kuthekera kolumikiza malo angapo a terminal kudzera mumagetsi pa gawo la DIN rail kuti chizindikiro chodziwika bwino (monga 24V DC kapena 0V) chigawidwe m'magawo ambiri a terminal popanda kuyendetsa mawaya pakati pa malo aliwonse. Izi zikufanana ndi momwe bolodi lopangira magetsi mu prototyping yamagetsi limagawira ma power rails m'malo osiyanasiyana a zigawo—koma ndi kulimba kwa makina ndi satifiketi yamagetsi yofunikira pa malo owongolera mafakitale.

Pali njira ziwiri zazikulu zolumikizirana zomwe zimagwiritsidwa ntchito popanga ma block a terminal okhala ndi kuchuluka kwakukulu kwa mapulogalamu a PLC:

Kulumikiza kwamkati kwa malo oimika mabasi. Bus bar yolimba ya mkuwa kapena ya mkuwa imadutsa mkati mwa nyumba ya terminal block, kulumikiza malo angapo omalizira mkati mwa chipangizo chimodzi. Iyi ndi njira yomwe imalola kapangidwe ka triple-deck current bar. Bus bar yamkati iyenera kukhala ndi kukula koyenera kuti inyamule current yovomerezeka popanda kukwera kwambiri kwa kutentha—nthawi zambiri imafuna malo opingasa osachepera 4 mm² pa terminal block ya 30A-rated yokhala ndi malo atatu a deck. Ubwino wa terminal yamkati ya bus bar ku contact spring ndi wofunikira kwambiri: kulumikizana kwamkati kosasunthika kapena kolimba kwambiri kudzapanga kutentha komwe kumawononga malo olumikizirana pakapita nthawi, pamapeto pake kumabweretsa kulephera.

Cholumikizira chakunja cha jumper bar. Ma jumper bars akunja omwe amaikidwa pambuyo pa msika kapena fakitale (omwe amatchedwanso ma distribution blocks kapena supply bridges) amalumikizidwa pamwamba pa ma terminal blocks apafupi kuti apange basi yofanana pazida zambiri. Kapangidwe kameneka ndi kosinthasintha kuposa kulumikizana kwamkati chifukwa mutha kusintha ma terminal blocks omwe amalumikizidwa ku basi iti popanda kusokoneza kapangidwe kamkati. Mu ntchito zogawa za PLC, ma jumper bars akunja nthawi zambiri amagwiritsidwa ntchito popanga ma power distribution bus ofanana a magulu olowetsa a PLC. Ma jumper bars amawerengedwa kuti ndi amagetsi ofanana ndi terminal block yokha, ndipo mphamvu yawo yolumikizirana ndi terminal block current bar imasungidwa ndi spring mechanism kapena screw clamp.

Pa J-Guang, mabuloko athu otsiriza okhala ndi malo atatu Gwiritsani ntchito mipiringidzo yamkati ya basi yolumikizira mkati mwa chipangizo ndi mipiringidzo yakunja yolumikizira pakati pa chipangizo. Kapangidwe kawirikawiri kameneka kamapatsa omanga ma panel kusinthasintha kwakukulu momwe amakonzera ma netiweki ogawa ma signal, ndipo kamalola kusintha kwa malo popanda kulumikizanso mawaya—chifukwa mutha kuletsa gawo linalake la mipiringidzo ya jumper popanda kusokoneza netiweki yogawa yonse.

Voltage ndi Current Ratings: Kodi IEC 60947-7-1 Zofunikadi

Chimodzi mwa zinthu zomwe sizimamvetsetseka bwino pankhani yosankha ma terminal block pogawa ma PLC ndi njira yowerengera ma voltage. Ma terminal block ali ndi ma rated voltage ndi ma rated current, ndipo ma specification onsewa amayendetsedwa ndi miyezo yapadziko lonse lapansi—koma sasinthasintha, ndipo kuwasokoneza ndi chimodzi mwa magwero ofala kwambiri a zolakwika za ma specification zomwe ndimakumana nazo m'munda.

Muyezo woyenera wa ma modular terminal blocks omwe amagwiritsidwa ntchito mu zida zowongolera mafakitale ndi IEC 60947-7-1 (Chida chosinthira magetsi otsika ndi zida zowongolera - Gawo 7-1: Zipangizo zothandizira - Ma block a ma terminal a ma conductor amkuwa). Muyezo uwu umatanthauzira zofunikira pakuyesa kwamakina, zamagetsi, ndi zachilengedwe zomwe block ya ma terminal iyenera kudutsa kuti ilandire mulingo. Mafotokozedwe ofunikira pansi pa muyezo uwu ndi awa:

Voltage yoyesedwa. Volti yapamwamba kwambiri yomwe block ya terminal ingathe kupirira pakati pa ma circuits oyandikana nawo kapena pakati pa circuit ndi mounting rail (ngati ilipo). Pa ntchito zogawa za PLC pogwiritsa ntchito ma signali a 24V DC, izi sizimakhala zovuta nthawi zambiri—koma pakuwongolera mota ya magawo atatu kapena kugawa kwa 480V AC, voltage yovotera imakhala yofunika kwambiri. Nthawi zonse onetsetsani kuti voltage yovotera ya block ya terminal ikukumana kapena kupitirira voltage yayikulu ya system, osati voltage yokha. Pa malo a PLC amakampani okhala ndi ma voltage osakanikirana (kuphatikiza ma feeder a 480V AC motor), tikukulimbikitsani kusankha ma terminal block omwe adavotera630V AC yocheperako kupereka chitetezo chokwanira.

Yoyesedwa yamagetsi. Mphamvu yopitilira yopitilira yomwe inganyamulidwe kudzera mu chipika cha terminal popanda kupitirira kukwera kovomerezeka kwa kutentha. Malire okwera kutentha pansi pa IEC 60947-7-1 ndi 45°C pamwamba pa mlengalenga pa mphamvu yoyesedwa, yoyesedwa kumapeto kwa kondakitala. Izi ndizofunikira chifukwa mphamvu yoyesedwa imatenga waya woyezera (nthawi zambiri 2.5 mm² pa block ya terminal ya 20A) ndi kutentha kwapadera. Ngati mugwiritsa ntchito waya woyezera wocheperako kuposa momwe muyezo umaganizira, mphamvu yeniyeni yonyamulira magetsi idzakhala yotsika kuposa mtengo woyesedwa chifukwa cha kutentha kwa I²R komwe kumawonjezeka mu kondakitala wocheperako.

Voltage yowunikira mphamvu. Mphamvu yamagetsi yapamwamba kwambiri (kukwera) komwe block yamagetsi imatha kupirira popanda kuwonongeka. Pazinthu zomwe PLC imagwiritsa ntchito m'mafakitale okhala ndi magalimoto ambiri, mphamvu yamagetsi yochokera ku inductive switching imatha kufika 2.5–4 kV ngakhale pa ma circuits a 24V DC. Mphamvu yamagetsi yovoteledwa imatchulidwa pa2.5 kV, 4 kV, 6 kV, kapena 8 kV kutengera gulu la zida (Overvoltage Gulu I, II, III, kapena IV). Pa makabati a PLC omwe ali ndi ma drive osinthasintha (VFDs), kusankha ma terminal blocks omwe ali ndi mphamvu ya osachepera 4 kV ndikwanzeru.

Mlingo wa kuipitsa. IEC 60947-7-1 imafuna kuti ma terminal blocks ayesedwe kuti apeze digiri inayake ya kuipitsidwa (1, 2, kapena 3), yomwe imafotokoza momwe zinthu zilili m'malo omwe zipangizozi zidzagwiritsire ntchito. Digiri 3 ya Kuipitsidwa imagwira ntchito m'makabati owongolera mafakitale komwe kuipitsidwa koyendetsa (monga fumbi ndi kuzizira) kungayembekezeredwe. Nthawi zonse tchulani Digiri 3 ya Kuipitsidwa kwa Mafakitale a PLC, ndikutsimikizira kuti mtunda wa terminal block ndi malo otsetsereka ndi otseguka wafotokozedwa moyenerera.

Njira Zothetsera Waya: Screw Clamp vs. Spring Cage vs. Insulation Displacement

Njira yochotsera waya ndi njira yomwe woyendetsa waya amalumikizirana ndi magetsi ndi bala yamagetsi ya block block. Pa ntchito zogawa za PLC, matekinoloje atatu akuluakulu ochotsera waya ali ndi zabwino zake:

Kutha kwa chogwirira cha screw. Ukadaulo wodziwika bwino kwambiri, kugwiritsa ntchito sikurufu kukanikiza mbale yolumikizira yomwe imateteza kondakitala motsutsana ndi bala lamagetsi. Kutha kwa sikurufu kumapereka kudalirika kwabwino kwambiri pakukhudzana ndipo kumavomerezedwa kwambiri m'mafakitale padziko lonse lapansi. Komabe, amafunikira screwdriver kapena hex key kuti ayike (kuwonjezera nthawi yomanga panel), ndipo amatha kuwonongeka ngati sikurufu imasuka ikagwedezeka - njira yodziwika bwino yolephera m'mapanelo owongolera mafakitale okhala ndi ma bundle a waya wolemera kapena zida zogwedezeka. Timatchula kutha kwa sikurufu pakugwiritsa ntchito komwe kutha kudzapezeka nthawi zambiri kuti ikonzedwe kapena komwe mawaya akumunda amachitidwa ndi ogwira ntchito omwe amakonda mayankho ogwira mtima.

Kutha kwa khola la masika. Makina a kasupe amagwiritsa ntchito mphamvu yolumikizira waya nthawi zonse, zomwe zimathandiza kuti waya ukhale wopanda screw komanso kuti waya ukhale wopanda zida. Ma waya olumikizirana ndi ma spring cage ndi othamanga kwambiri m'malo opangira ndipo amalimbana ndi kugwedezeka chifukwa ma spring cage amakhala ndi mphamvu yolumikizirana nthawi zonse mosasamala kanthu za kugwedezeka. Komabe, ma spring cage olumikizirana nthawi zambiri amakhala ndi mphamvu yolumikizirana kwambiri kuposa ma screw clamp terminals, ndipo sangakhale ovomerezeka m'mafakitale ena akale omwe analipo kale ukadaulo wa ma spring cage. Tikukulimbikitsani kuti ma spring cage olumikizirana ndi ma high-vibration PLC space monga ma pump station, compressor enclosures, ndi HVAC control panels.

Kutha kwa kusuntha kwa insulation (IDC). Kulumikizana kofanana ndi tsamba komwe kumaboola chotenthetsera waya ndikukhudzana ndi kondakitala waya ikakankhira mu malo omalizira. Kutha kwa IDC kumakhala kofulumira kwambiri (sikufunika kuchotsa) ndipo kumapereka kukana kwabwino kwambiri kwa kugwedezeka, koma ndi koyenera kokha kwa ma kondakitala olimba kapena ma kondakitala okhazikika bwino mkati mwa kukula kwina. Sikoyenera kwa ma kondakitala olimba. Pa mawaya ogawa a PLC pogwiritsa ntchito ma waya olimba odulidwa kale m'malo opangira, kutha kwa IDC kumatha kuchepetsa nthawi yotha ndi 40-60% poyerekeza ndi njira zomangira zomangira. Timatchula kutha kwa IDC kwa omanga ma panel a OEM omwe akuthetsa kuchuluka kwakukulu kwa ma waya okhazikika.

Zipangizo za Nyumba: PA6.6 poyerekeza ndi PPE/PPO ndi Zotsatira za Magwiridwe Antchito

Zipangizo zomangira nyumba ya terminal block zimatsimikizira momwe imagwirira ntchito kutentha, kuchedwa kwa malawi, komanso kukana mankhwala—zonsezi ndizofunikira kwambiri m'malo osungira makabati a PLC komwe zinthu zopangira kutentha monga magetsi a PLC ndi ma drive module zimapangitsa kutentha kwambiri. Zipangizo ziwiri zomangira nyumba zama terminal block zamafakitale ndi polyamide 6.6 (PA 6.6) ndi modified polyphenylene ether/polyphenylene oxide (PPE/PPO blends).

PA 6.6 (yomwe nthawi zambiri imatchedwa nayiloni) ndi chinthu chomwe chimagwiritsidwa ntchito kwambiri popanga nyumba yosungiramo zinthu. Ubwino wake waukulu ndi mphamvu yabwino kwambiri ya makina, mphamvu zabwino za dielectric, komanso kugwirizana kwa mankhwala osiyanasiyana. PA 6.6 imakwaniritsa izi. UL94 V-0 kuchedwa kwa moto makulidwe a 0.8 mm, zomwe zimakwaniritsa zofunikira za kuyaka kwa IEC 60947-7-1Komabe, PA 6.6 ili ndi malire opitilira kutentha ogwirira ntchito pafupifupi 105°C, ndipo imayamwa chinyezi pakapita nthawi—zomwe zingachepetse mphamvu yake ya dielectric ndi 30% m'malo okhala ndi chinyezi chambiri.

Zipangizo za PPE/PPO zimakhala ndi mphamvu yolimbana ndi chinyezi komanso kutentha kwambiri kosalekeza (mpaka 115–120°C). Mphamvu zawo zamagetsi zimakhala zokhazikika pamlingo wa chinyezi, zomwe zimapangitsa kuti zikhale zabwino kwambiri pamakina akunja kapena a PLC okhala ndi chinyezi chambiri. Komabe, PPE/PPO ndi yokwera mtengo kuposa PA 6.6, ndipo kukana kwake kukhudza makina kutentha kochepa ndi kochepa—kotero pakugwiritsa ntchito makabati a PLC m'nyumba, PA 6.6 ikadali chisankho chotsika mtengo kwambiri.

Pa ma terminal block a PLC omwe amagwiritsidwa ntchito m'makabati otsekedwa okhala ndi kutentha kozungulira mpaka 55°C (komwe kumachitika m'makabati otsekedwa okhala ndi zinthu zopangira kutentha), nyumba ya PA 6.6 ndi yokwanira. Pakuyika m'malo otsekedwa akunja, kuwonekera mwachindunji padzuwa, kapena m'malo opangira kutentha kwambiri, tikupangira nyumba za PPE/PPO. Nthawi zonse tsimikizirani zomwe zili m'nyumba zomwe zili pa datasheet—ma terminal block ambiri safotokoza bwino zomwe zili m'nyumba, zomwe ziyenera kukhala chizindikiro chofiira.

Zolemba Zogwiritsira Ntchito: Kugwiritsa Ntchito Ma Terminal Blocks Okhala Ndi Density Kwambiri Mu Ma PLC Okhazikika

Kukhala ndi ma terminal blocks operekedwa pa ntchito zogawa za PLC m'mafakitale osiyanasiyana—kusonkhanitsa magalimoto, kukonza chakudya ndi zakumwa, kukonza madzi, ndi kuwongolera HVAC—ndikufuna kugawana njira zogwiritsira ntchito zomwe nthawi zonse zimapereka zotsatira zabwino kwambiri komanso zolakwika zomwe nthawi zambiri zimayambitsa mavuto m'munda.

Mfundo yofunika kwambiri yogwiritsira ntchito ndi kulekanitsa ndi mtundu wa chizindikiroMu kabati ya PLC yokhala ndi ma voltage osakanikirana (480V AC motor feeders, 230V AC control circuits, 24V DC PLC I/O), ma terminal block a voltage iliyonse ayenera kulekanitsidwa, kaya poyika pa ma DIN rails osiyana okhala ndi clear legation kapena pogwiritsa ntchito ma terminal blocks a barrier-style omwe amapereka magawano enieni pakati pa ma circuits osiyanasiyana oyandikana nawo. Kusiyanitsa kumeneku kumafunika ndi IEC 60204-1 (Chitetezo cha makina—zipangizo zamagetsi) ndipo sichosankha m'njira zambiri zowunikira chitetezo m'mafakitale.

Pa gawo logawa la 24V DC PLC I/O makamaka, tikupangira kugwiritsa ntchito kasinthidwe ka triple-deck komwe top deck ndi common power bus (24V DC kuchokera ku magetsi), mid deck imadyetsa PLC input group A, ndipo PLC input group B imadyetsa PLC input. Kapangidwe kameneka kamalola common bus kuti ipatulidwe kuti igwiritsidwe ntchito potseka-tagout pomwe magulu onse awiri olowetsa amakhalabe ndi magetsi, ndipo zimathandiza kuti magulu olowetsa pawokha asamalumikizidwe kuti akonze popanda kukhudza gulu lina.

Cholakwika chodziwika bwino chomwe ndimachiwona ndikuchepetsa kuchuluka kwa mphamvu ya terminal block pakugawa mphamvu ya PLC. Njira zolowera za 24V DC power rail feeding32 PLC pa 20 mA pa njira iliyonse zimakhala ndi 640 mA yonse—mkati mwa mphamvu ya current ya block iliyonse. Komabe, mphamvu ya inrush kuchokera ku ma module olowera a PLC (omwe angakhale 3-5x ya mphamvu ya steady-state panthawi yoyatsa magetsi) amatha kukakamiza kwakanthawi block yogawa magetsi. Tikukulimbikitsani kusankha ma terminal blocks kuti mugawane mphamvu ya PLC ndi mphamvu ya rated osachepera 150% ya mphamvu ya steady-state yowerengedwa, kuti mupereke malire okwanira a inrush ndi zolakwika.

Chinthu china chothandiza chomwe muyenera kuganizira ndi ichi kasamalidwe ka waya ndi njira zoyendetseraMa terminal block a triple-deck amachepetsa kuchuluka kwa mawaya koma amawonjezera kuchuluka kwa mawaya pamalo aliwonse omalizira (mawaya atatu pa malo aliwonse m'malo mwa amodzi). Izi zimafuna chisamaliro chosamala pa waya womangirira mzere wa terminal block kuti zitsimikizire kuti palibe waya umodzi wopindika womwe uli wolimba kwambiri, zomwe zingawononge kutchinjiriza kwa waya pakapita nthawi. Tikukulimbikitsani kuti musunge ma terminal radius osachepera katatu kuposa waya wakunja kwa waya kuti waya wopindika ugwire ntchito mosavuta.

Kusamalira, Kuthetsa Mavuto, ndi Kusintha kwa Munda

Chimodzi mwa zifukwa zomveka kwambiri za ma block a terminal a triple-density triple-deck mu ntchito zogawa za PLC ndi ubwino wosamalira ndi kuthetsa mavuto omwe amapereka. Pamene njira yolowera ya PLC yalephera mu gulu lolumikizidwa ndi waya wamba, njira yodziwira matenda imafuna kutsatira waya uliwonse kuchokera ku gawo lolowera kubwerera kudzera mu block ya terminal kupita ku chipangizo chamunda—njira yomwe ingatenge maola ambiri mu harness yovuta. Mu chogwirira chopangidwa bwino. chipika cha terminal cha malo atatu Kukhazikitsa, njira yodziwira matenda ndi yayifupi kwambiri chifukwa malo aliwonse a terminal block amagwira ntchito yodziwika bwino komanso yodziwikiratu.

Pa kusintha kwa malo—komwe kumachitika kawirikawiri kuposa momwe opanga makina ambiri owongolera amayembekezera—ma terminal blocks okhala ndi malo atatu okhala ndi jumper bar yakunja yolumikizirana amapereka zabwino zina. Pamene kukulitsa kwa makina a PLC kumafuna kuwonjezera njira zolowera, njirayi nthawi zambiri imangokhala yowonjezera malo a terminal block ku gawo la DIN rail lomwe likupezeka, kukhazikitsa ma jumper bar atsopano kuti awonjezere basi yogawa ku malo atsopano, ndikuthetsa mawaya atsopano a malo. Izi zimakhala zachangu kwambiri kuposa kuyendetsa waya watsopano kuchokera ku terminal block array kupita ku I/O point iliyonse yatsopano.

Kuti mupitirize kukonza, ndikupangira kukhazikitsa ndondomeko yotsimikizira mphamvu ya torque ya terminal block ya terminal block ya screw-clamp terminals m'malo omwe amagwedezeka kwambiri. Nthawi ya torque imadalira kuchuluka kwa kugwedezeka: pa makabati omwe ali m'malo ambiri amafakitale (pansi pa workshop), kutsimikizira mphamvu ya torque pachaka ndikokwanira; pa makabati omwe ali pamakina ogwedezeka (mapampu, ma compressor, ma vibrating screen), kutsimikizira kwa theka la chaka ndi kwanzeru kwambiri. Gwiritsani ntchito screwdriver ya torque yolinganizidwa yomwe ili ndi mphamvu ya torque yofotokozedwa ndi datasheet—nthawi zambiri 0.5–0.8 Nm pa terminal block ya 4 mm².

Kupeza Zinthu ndi Kutsimikizira Ubwino: Zomwe Mungafune Kuchokera kwa Wogulitsa Wanu

Si zonse ma blocks otsiriza okhala ndi kuchuluka kwakukulu amapangidwa mofanana, ndipo kusiyana kwa zinthu zomwe zimasiyanitsa chinthu chopangidwa mwaluso ndi mtundu watsopano wa chinthu sikumawonekera nthawi zonse pachithunzi cha kabukhu. Izi ndi zomwe ndikupangira kuti mufunse kuchokera kwa inu wogulitsa chipika cha terminal:

Pemphani IEC 60947-7-1 lipoti la mayesoWopanga aliyense amene amanena kuti akutsatira muyezo uwu ayenera kukhala ndi mwayi wopereka lipoti loyesa kuchokera ku labotale yoyesera yovomerezeka (monga TÜV Rheinland, UL, CSAkapena Bureau Veritas). Lipotilo la mayeso limalemba kuchuluka kwenikweni kwa mphamvu ya dielectric, kukana kutenthetsa, kukwera kwa kutentha, ndi kupirira kwa makina—osati kungowerengera komwe kwanenedwa. Wopereka yemwe sangathe kapena sangapereke zikalatazi ndi chizindikiro chofunikira.

Tsimikizani kuwerengera kwa mphamvu yamagetsi ndi digiri ya kuipitsidwa kwa mpweya pa lipoti la mayeso. Ma datasheet ambiri a generic terminal block amalemba IEC 60947-7-1 kunena kuti kutsatira malamulo popanda kufotokoza kuchuluka kwa mphamvu yamagetsi kapena kuchuluka kwa kuipitsidwa kwa mpweya—zomwe zikutanthauza kuti magawo amenewo sanayesedwe, kapena zotsatira za mayesowo zinali zochepa mokwanira kotero kuti sizinatchulidwe mu datasheet. Pa malo a mafakitale a PLC, muyenera kuwona Pollution Degree 3 ndi Impulse Voltage 4 kV kapena kupitirira apo ngati zofunikira zochepa.

Tsimikizani pepala la deta ya zinthu za nyumbaPemphani mtundu wa zipangizo za nyumba ndi UL94 Chiyeso cha kuyaka. Ma terminal block a PA 6.6 ayenera kutsimikiziridwa kuti ndi UL94 V-0 pa makulidwe a khoma la nyumba lomwe lagwiritsidwa ntchito mu chinthucho. Ngati wogulitsa sangathe kupereka pepala la deta ya zinthuzo, zomwe akunena pa zinthuzo sizikutsimikiziridwa.

Yesani mfundo zotsutsana ndi kukhudzana. Chotchingira chapamwamba kwambiri chiyenera kukhala ndi kukana kokhudzana ndi magetsi kochepera 1 mΩ (milliohm) pamagetsi oyesedwa, oyesedwa pamalo omalizira a waya. Kukana kwakukulu kokhudzana ndi magetsi kumasonyeza kukonzekera kosayenera kwa pamwamba pa magetsi kapena kapangidwe ka mphamvu ya masika/clamp, zomwe zonsezi zingayambitse kulephera msanga pakugwiritsa ntchito magetsi amphamvu kapena kutentha kwambiri.

Zochitika Zatsopano: Ma Smart Terminal Blocks ndi Integrated Diagnostics

Msika wa terminal block wayamba kuwona kuyambitsidwa kwa zinthu zodziwira matenda zomwe kale zinali zosatheka ndi zinthu zopanda ntchito. Opanga angapo—kuphatikizapo J-Guang—akupanga zinthu za terminal block zokhala ndi masensa owunikira omwe ali mkati, ma LED a status, ndi ma interface olumikizirana omwe amalola terminal block yokha kunena za momwe ilili kwa PLC kapena BMS kudzera pa basi ya digito.

Pa ntchito zogawa za PLC, chitukuko chodalirika kwambiri ndi kuphatikiza kwa mabasi owonera mafunde amagetsi zomwe zimatha kuzindikira ma circuits otseguka kapena ma current values ​​osazolowereka pa malo a terminal block popanda masensa ena akunja. Izi zimathandiza kuchenjeza za kukonza (m'malo moyankha kulephera) pa netiweki yogawa mawaya a PLC. Terminal block yokhala ndi sensa ya current yolumikizidwa yomwe imauza PLC kudzera pa Modbus RTU kapena CAnopen mawonekedwe amatha kuchenjeza ogwiritsa ntchito za mavuto omwe akukumana ndi kulumikizana kwa waya asanayambe kulephera kwa PLC.

Tikuwonanso kuwonjezeka kwa kugwiritsa ntchito njira zotulutsira popanda zida za ma block a ma terminal a ma spring cage omwe amalola kuchotsa mawaya popanda zida—chinthu chomwe chimachepetsa kwambiri nthawi yolowera yokonza. Kuphatikiza kwa kutha kwa ma spring cage (kuti pakhale liwiro loyambira kukhazikitsa) ndi kutulutsidwa kopanda zida (kuti pakhale liwiro lolowera yokonza) ndikosangalatsa kwambiri m'malo ogawa ma PLC komwe mtengo woyambira womanga ma panel ndi mtengo wokonzanso wopitilira ndi zinthu zofunika kwambiri.

Mafunso Ofunsidwa Kawirikawiri