- Iibhloko zesiphelo esineedekhi ezintathu beka amanqanaba amathathu oqhagamshelwano azimeleyo kwindawo enye ye-DIN rail footprint, unciphisa ububanzi bephaneli ukuya kuthi ga kwi-60% xa kuthelekiswa neebhloko zesiphelo zesiqhelo zenqanaba elinye.
- Iingcingo zokusasazwa kwe-PLC ezinoxinano oluphezulu zifunaiibha zebhasi ezidibanisa uqhagamshelo olunqamlezileyoezisasaza imiqondiso kumanqanaba amaninzi esiphelo ngaphandle kokwandisa ubunzima beentambo.
- I-voltage elinganisiweyo kwiindawo ze-PLC zoshishino kufuneka ihlangabezaneI-IEC 60947-7-1ubuncinci kwi-630V AC, kunye nokupheliswa kokutshintshwa kwe-insulation okuvumela ukufakelwa kwentambo ngaphandle kwezixhobo.
- Ii-PLC ezisasaza iinethiwekhi zesignali ze-24V DC kwiitshaneli ze-I/O ezingaphezu kwama-32 zinokunciphisa iimpazamo zocingo malunga ne-70% xa kusetyenziswa iibhloko zesiphelo ezidityaniswe nge-cross-connected multi-deck terminal ngokuchasene neentambo ze-point-to-point nganye.
- Ukukhetha izinto—indlu ye-polyamide 6.6 (UL94 V-0) ngokuchasene nePPE/PPO—imisela ukusebenza kwebhloko yesiphelo phantsi kweemeko zekhabhinethi ye-PLC enobushushu obuphezulu.
Ingxaki yoxinano lweentambo kwiiphaneli zolawulo lwemizi-mveliso zanamhlanje
Ukuba ukhe wachitha ixesha ngaphakathi kwikhabhinethi ye-programmable logic controller (PLC) ephakathi nendawo eyakhiwe kwiminyaka engaphezu kwemihlanu eyadlulayo, uyazi kakuhle ingxaki yoxinano lweentambo. Ikhabhinethi igcwele—igcwele ngokupheleleyo—iintambo ezahlukeneyo, uninzi lwazo ziphethe imiqondiso ye-24V DC efanayo ukusuka kwi-power rail efanayo. Ikhadi ngalinye lokufaka lifumana intambo yalo ezinikeleyo ukusuka kumqolo we-terminal block. Yonke itshaneli yokukhupha inendlela yokubuyela efana nobunzima bokufaka. Isiphumo yintambo yokudibanisa ebiza kakhulu ukuyenza, kunzima kakhulu ukuyisombulula, kwaye phantse akunakwenzeka ukuyitshintsha ngaphandle kokufaka iimpazamo ezintsha.
Ndizibonele ngokwam iphaneli yeziko lolawulo lweemoto ezingama-400-amp apho intambo yokuqala yathatha iingcali ezimbini phantse iiyure ezisibhozo ukuxilonga ukungasebenzi kakuhle kwetshaneli yokufaka okwathi ekugqibeleni kwaba sisikrufu esikhululekileyo kwibhloko yesiphelo. Loo odyssey yokuxilonga ibingathabatha ngaphantsi kwemizuzu engama-30 kwiphaneli yokusasazwa kwe-PLC eyilwe kakuhle isebenzisa iibhloko zesiphelo sesithathu esine-high-density kunye noyilo loqhagamshelo olunqamlezileyo.
Oku akuyongxaki yoqikelelo. Kwiimeko zanamhlanje zokwenza izinto ngokuzenzekelayo kwimizi-mveliso, uxinano lweetshaneli ze-PLC I/O lunyuke kakhulu njengoko iinkqubo zolawulo ziye zaba nobuchule ngakumbi. I-S7-1500 PLC evela kwi-Siemens inokufikelela kwii-I/O points ezingama-8192 ezahlukeneyo kwiirakhi ezininzi, kwaye nganye kwezo ndawo ifuna ukupheliswa kwentambo kuzo zombini imodyuli ye-PLC I/O kunye nokupheliswa kwentsimi. Xa uphinda-phinda loo nto nakwindawo encinci yokufakela—masithi, ii-I/O points ezingama-256—umngeni wolawulo lwentambo uba yinto ekhoyo ngokwenene kumakhi wephaneli kunye nengcali yokulungisa ngokufanayo.
Izixhobo ze-elektroniki zeNingbo J-Guang ebeyila kwaye evelisa iibhloko zesiphelo ezinoxinano oluphezulu ngokukodwa kwizicelo zokusasazwa kwe-PLC ukusukela ngo-2008, kwaye ndichithe ixesha elininzi ndisebenza ngokuthe ngqo nabahlanganisi beenkqubo zolawulo kunye nabakhi beepaneli kuzo zonkeIYurophu, uMntla Melika, kunye noMzantsi-mpuma weAsia apho kuqhelekile iibhloko zesiphelo ukusilela kunye nendlela uyilo lwe-multi-deck stacking olusombulula ngayo ezo ntsilelo. Eli nqaku lichaza oko ndikufundileyo malunga nokuba kutheni iibhloko zesiphelo se-triple-deck ezinoyilo loqhagamshelo olunqamlezileyo zimele ubugcisa obuphezulu bokufakelwa kwe-PLC, zeziphi iinkcukacha zobugcisa ezibalulekileyo, kunye nendlela yokukhetha imveliso efanelekileyo kwindawo yakho yokufaka ethile.
Ukuqonda uyilo lwe-Triple-Deck Stacking
Umda oyintloko weebhloko zesiphelo zenqanaba elinye eziqhelekileyo kwizicelo zokusasazwa kwe-PLC kukungasebenzi kakuhle kwendawo. I-DIN41616 okanyeI-IEC 60947-7-1 ibhloko yesiphelo ehambelanayo ithatha ububanzi bemodyuli enye (ngesiqhelo yi-6.2 mm okanye i-12 mm kuxhomekeke kumlinganiselo wangoku) kwaye inika inqanaba elinye lokungena ngentambo. Xa ufuna ukusasaza i-24V DC kwiitshaneli ezilishumi elinesibini ezahlukeneyo ze-PLC zokufaka ukusuka kwirali yamandla eqhelekileyo, udinga izikhundla ezilishumi elinesibini zebhloko yesiphelo ngasinye, oko kuthetha ububanzi bemodyuli ezilishumi elinesibini bendawo yerali ye-DIN.
Iibhloko zesiphelo ezineedekhi ezintathu zisombulula oku kungasebenzi kakuhle kwendawo ngokubeka amanqanaba amathathu okuphela kwentambo ezizimeleyo kububanzi bemodyuli enye. Uyilo lusebenzisa ibha yangoku eqhelekileyo ehamba kuzo zonke iileveli ezintathu, kodwa inqanaba ngalinye lahlulwe ngombane yi-insulating partition, kwaye inqanaba ngalinye linendawo yalo yokungena yentambo ezimeleyo. Isiphumo kukuba ungaphelisa iisekethe ezintathu zentambo ezahlukeneyo—nganye inonxibelelwano lwayo lokufaka kunye nokukhupha—ngaphakathi kwe-DIN rail footprint efanayo efunekayo yi-terminal block yenqanaba elinye.
Kuba ezi dekhi zintathu zabelana ngebha efanayo yamandla kodwa zineendawo zokunxibelelana ezahlukeneyo, ulungiselelo lwe-triple-deck lufanelekile kusasazo lwe-PLC apho unebhasi yamandla okanye yesignali eqhelekileyo exhuma kwiindawo ezahlukeneyo. I-common busbar iqhagamshela kwi-top deck, kwaye isebe leesekethe ezintathu ezizimeleyo ezivela kwi-mid deck ne-bottom. Kwimeko yosasazo lwe-24V DC PLC yokufaka, oku kuthetha ukuba ibhloko enye ye-triple-deck terminal inokukhonza iziteshi ezintathu zokufaka ezivela kwi-common feed enye—ukunciphisa ubude be-DIN rail obufunekayo ngesibini kwisithathu.
Impembelelo ebonakalayo kuqoqosho lokwakha iiphaneli ibalulekile. Kwiphaneli eqhelekileyo ye-256-I/O PLC, utshintsho ukusuka kwiibhloko zesiphelo senqanaba elinye ukuya kwibhloko zesiphelo sesithathu ukuze kusasazwe amandla lunokunciphisa inani leebhloko zesiphelo ngezikhundla ezingama-60–80, nto leyo ethetha ngokuthe ngqo ubude besitimela se-DIN obuncitshisiweyo, ubungakanani bephaneli ebiyelweyo obuncitshisiweyo (kunye neendleko), kunye nomthamo wentambo oncitshisiweyo. Sisebenze nabakhi beephaneli abaye banciphisa ixesha labo eliqhelekileyo lokwakha iiphaneli ngeeyure ezi-4–6 kwiphaneli nganye emva kokutshintshela kwisakhiwo se-triple-deck kumacandelo okusasazwa kwe-PLC.
Uyilo loQhagamshelo oluNqamlezileyo: Ukusasaza iiSignali ngaphandle kweNgxaki yeNtambo
Uyilo lwe-triple-deck luyisiqingatha nje sesisombululo sokusasazwa kwe-PLC enoxinano oluphezulu. Isiqingatha sesibini luyilo lonxibelelwano olunqamlezileyo—inkqubo yeebha zebhasi zangaphakathi kunye neebha ze-jumper zangaphandle ezivumela amanqanaba amaninzi e-terminal ukuba adityaniswe ngombane ngendlela elawulwayo neguqukayo. Kulapho ubungcali bobunjineli bomenzi weebhloko ze-terminal bubonakala khona ngokwenene.
Kwimeko yokusasazwa kwe-PLC, uqhagamshelo olunqamlezileyo lubhekisa kubuchule bokudibanisa ngombane izikhundla ezininzi zesiphelo ecaleni kwecandelo le-DIN rail ukuze isignali eqhelekileyo (efana ne-24V DC okanye i-0V) isasazwe kumanqanaba amaninzi esiphelo ngaphandle kokusebenzisa iingcingo ezahlukeneyo phakathi kwendawo nganye. Oku kufana nendlela ibhodi yebreadboard kwi-prototyping ye-elektroniki esasaza ngayo ii-power rails kwiindawo ezininzi zecandelo—kodwa ngokuqina koomatshini kunye nesatifikethi sombane esifunekayo kwiindawo zolawulo lwemizi-mveliso.
Kukho iindlela ezimbini eziphambili zokudibanisa unxibelelwano ezisetyenziswa kuyilo lweebhloko zesiphelo ezinoxinano olukhulu kwizicelo ze-PLC:
Uqhagamshelo lwangaphakathi lwebha yebhasi. Ibha yebhasi eqinileyo yobhedu okanye yobhedu ihamba ngaphakathi ngaphakathi kwindlu yebhloko yesiphelo, idibanisa iindawo ezininzi zokuphela ngaphakathi kwesixhobo esinye. Le yindlela evumela uyilo lwebha yangoku yoyilo lwe-triple-deck. Ibha yebhasi yangaphakathi kufuneka ibe nobukhulu obuchanekileyo ukuze ithwale umsinga olinganisiweyo ngaphandle kokunyuka okugqithisileyo kobushushu—ngokuqhelekileyo ifuna indawo enqamlezileyo ubuncinane i-4 mm² kwibhloko yesiphelo elinganisiweyo ye-30A enezikhundla ezintathu zedekhi. Umgangatho wokuphela kwebha yebhasi yangaphakathi kwintwasahlobo yoqhagamshelwano ubalulekile: uqhagamshelo lwangaphakathi olukhululekileyo okanye oluxhathisa kakhulu luya kudala ukufudumeza kwendawo okonakalisa umphezulu woqhagamshelwano ngokuhamba kwexesha, ekugqibeleni kukhokelela ekungaphumelelini.
Uqhagamshelo olunqamlezileyo lwebha yejumper yangaphandle. Iibha ze-jumper zangaphandle ezifakwe emva kwemarike okanye ezifakwe kwifektri (ezibizwa ngokuba ziibhloko zokusasazwa okanye iibhulorho zokuhambisa) zifakwa phezulu kwiibhloko zesiphelo ezikufutshane ukuze zenze ibhasi eqhelekileyo kwizixhobo ezininzi. Olu lwakhiwo luguquguquka ngakumbi kunonxibelelwano lwangaphakathi kuba ungaphinda ulungelelanise ukuba zeziphi iibhloko zesiphelo eziqhagamshelwe kwibhasi enjani ngaphandle kokuchitha uyilo lwangaphakathi. Kwizicelo zokusasazwa kwe-PLC, iibha ze-jumper zangaphandle zihlala zisetyenziselwa ukwenza iibhasi zokusasazwa kwamandla afanayo kumaqela okufaka e-PLC. Iibha ze-jumper zilinganiswa ngombane ofanayo nebhloko yesiphelo ngokwayo, kwaye amandla azo okunxibelelana nebha yangoku yesiphelo igcinwa yi-spring mechanism okanye i-screw clamp.
E- J-Guang, iibhloko zethu zesiphelo esineedekhi ezintathu sebenzisa indibaniselwano yeebha zebhasi zangaphakathi zokufaka izixhobo ngaphakathi kunye neebha ze-jumper zangaphandle zokusasazwa phakathi kwezixhobo. Olu lwakhiwo olubini lunika abakhi beepaneli ukuguquguquka okuphezulu kwindlela abalungiselela ngayo iinethiwekhi zokusasazwa kwesignali, kwaye luvumela ukuguqulwa kwentsimi ngaphandle kokudibanisa kwakhona—kuba unganqumla icandelo elithile lebha ye-jumper ngaphandle kokuphazamisa lonke inethiwekhi yokusasazwa.
Uvavanyo lweVoltage kunye noLwangoku: Yintoni I-IEC 60947-7-1 Ifuna Ngokwenene
Enye yezona zinto zingaqondwa kakuhle rhoqo xa kukhethwa iibhloko zesiphelo sokusasazwa kwe-PLC yinkqubo yokulinganisa i-voltage. Iibhloko zesiphelo sokugqibela ziphethe zombini i-voltage elinganisiweyo kunye ne-current elinganisiweyo, kwaye zombini iinkcukacha zilawulwa yimigangatho yamazwe ngamazwe—kodwa azitshintshi, kwaye ukuzibhidanisa yenye yezona mithombo zixhaphakileyo zeempazamo zeenkcukacha endidibana nazo kweli candelo.
Umgangatho osebenzayo weebhloko zesiphelo semodyuli ezisetyenziswa kwizixhobo zolawulo lwemizi-mveliso ngulo I-IEC 60947-7-1 (Iswitshi ye-voltage ephantsi kunye nesixhobo sokulawula—Icandelo 7-1: Izixhobo ezincedisayo—Iibhloko zesiphelo sendlela yokuqhuba ubhedu). Lo mgangatho uchaza iimfuno zovavanyo loomatshini, umbane, kunye nokusingqongileyo ekufuneka zidlule kwi-terminal block ukuze ifumane umlinganiselo. Iinkcukacha eziphambili phantsi kwalo mgangatho ziquka:
I-voltage elinganisiweyo. I-voltage ephezulu enokugcinwa yi-terminal block phakathi kweesekethe ezikufutshane okanye phakathi kwesekethe kunye ne-mounting rail (ukuba iyasebenza). Kwizicelo zokusasazwa kwe-PLC ezisebenzisa imiqondiso ye-24V DC, oku akusoloko kuyinto ethintelayo—kodwa kulawulo lweemoto olunezigaba ezintathu okanye usasazo lwe-480V AC, i-voltage elinganisiweyo iba yinto ebalulekileyo. Soloko uqinisekisa ukuba i-voltage elinganisiweyo ye-terminal block idibana okanye idlula i-voltage ephezulu yenkqubo, kungekuphela nje i-voltage eqhelekileyo. Kwiindawo ze-PLC zemizi-mveliso ezinamanqanaba e-voltage axutyiweyo (kubandakanya ii-feeders ze-motor ze-480V AC), sicebisa ukuba ukhethe ii-terminal blocks ezilinganiswe kuzo.Ubuncinane be-AC ye-630V ukubonelela ngomda wokhuseleko owaneleyo.
Umlinganiselo wangoku. Umlinganiselo ophezulu oqhubekayo wamandla onokuthwalwa kwi-terminal block ngaphandle kokudlula ukunyuka kobushushu okuvumelekileyo. Umda wokunyuka kobushushu phantsi I-IEC 60947-7-1 yi 45°C ngaphezulu kwemozulu kwi-current elinganisiweyo, ilinganiswa ekupheleni kwe-conductor. Oku kubalulekile kuba i-current elinganisiweyo ithatha i-wire gauge ethile (ngesiqhelo yi-2.5 mm² kwi-20A terminal block) kunye nobushushu obuthile be-ambient. Ukuba usebenzisa i-wire gauge encinci kunokuba i-rating icinga, amandla okwenyani okuthwala i-current aya kuba ngaphantsi kunexabiso elilinganisiweyo ngenxa yokwanda kwe-I²R heating kwi-conductor encinci.
I-voltage ye-impulse elinganiswe ngexabiso. I-voltage impulse ephezulu (i-surge) enokumelana ne-terminal block ngaphandle kokuphazamiseka. Kwi-PLC inputs kwiindawo zoshishino ezinemithwalo yeemoto, i-voltage impulses evela kwi-inductive switching inokufikelela kwi-2.5–4 kV nakwiisekethe ze-DC ezingama-24V. I-voltage ye-impulse elinganisiweyo ichazwe kwi2.5 kV, 4 kV, 6 kV, okanye 8 kV kuxhomekeke kudidi lwezixhobo (Udidi lwe-Overvoltage I, II, III, okanye IV). Kwiikhabhathi ze-PLC eziquka ii-variable frequency drives (ii-VFD), ukukhetha iibhloko zesiphelo ezilinganiswe ubuncinane kwi-4 kV impulse kuyacetyiswa.
Isidanga songcoliseko. I-IEC 60947-7-1 ifuna iibhloko zesiphelo zilinganiswe ngokwezinga elithile longcoliseko (1, 2, okanye 3), elichaza iimeko zokusingqongileyo apho izixhobo ziya kusebenza khona. I-Pollution Degree 3 isebenza kwiikhabhathi zolawulo lwemizi-mveliso apho ungcoliseko oluqhubayo (njengothuli kunye nokufuma) lunokulindelwa. Soloko uchaza i-Pollution Degree 3 kwizicelo zeekhabhathi ze-PLC zemizi-mveliso, kwaye uqinisekise ukuba imigama yokuqhekeka kunye nokususwa kwebhloko yesiphelo ichaziwe ngokufanelekileyo.
Iindlela Zokuphelisa Iingcingo: I-Screw Clamp vs. I-Spring Cage vs. I-Insulation Displacement
Indlela yokuphelisa intambo yindlela apho umqhubi wentambo enza unxibelelwano lombane nebha yangoku yebloko yesiphelo. Kwizicelo zokusasazwa kwe-PLC, ezi teknoloji zintathu zibalaseleyo zokuphelisa nganye ineenzuzo ezahlukeneyo:
Ukuphelisa i-screw clamp. Eyona teknoloji idumileyo, kusetyenziswa isikrufu ukufaka uxinzelelo kwipleyiti yokucinezela ekhusela umqhubi kwibha yangoku. Ukupheliswa kwe-screw clamp kubonelela ngokuthembeka okugqwesileyo kokunxibelelana kwaye kwamkelwe ngokubanzi kwimigangatho yemizi-mveliso kwihlabathi liphela. Nangona kunjalo, zifuna i-screwdriver okanye isitshixo se-hex sokufakelwa (ukongeza ixesha ekwakheni iiphaneli), kwaye zisengozini yokuwohloka kokunxibelelana ukuba isikrufu siyakhululeka phantsi kokungcangcazela—indlela eyaziwayo yokusilela kwiiphaneli zolawulo zemizi-mveliso ezineebhanti zentsimbi enzima okanye izixhobo ezingcangcazelayo. Sichaza ukupheliswa kwe-screw clamp kwizicelo apho ukupheliswa kuya kufumaneka rhoqo ukuze kulungiswe okanye apho ukufakwa kwentambo yentsimi kwenziwa ngabasebenzi abakhetha impendulo echukumisekayo.
Ukupheliswa kwekheji yasentwasahlobo. Indlela yokuvula intwasahlobo isebenzisa amandla okubamba rhoqo kumqhubi wentambo, isusa isidingo sesikrufu kwaye ivumela ukufakwa kwentambo engenazixhobo. Ukuphela kwekheyiji yentwasahlobo kukhawuleza ukufakelwa ucingo kwiindawo zemveliso kwaye ngokwemvelo kuyakwazi ukumelana nokungcangcazela kuba intwasahlobo igcina amandla oqhagamshelwano angaguqukiyo nokuba kungcangcazela kangakanani na. Nangona kunjalo, ukuphela kwekheyiji yentwasahlobo kudla ngokuba nokumelana okuphezulu kancinci koqhagamshelwano kuneziphelo zekheyiji yeskrufu, kwaye zisenokungamkeleki kwezinye imigangatho yakudala yemizi-mveliso eyayikho ngaphambi kobuchwepheshe bekheyiji yentwasahlobo. Sicebisa ukupheliswa kwekheyiji yentwasahlobo kwiindawo ze-PLC ezinokungcangcazela okuphezulu ezifana nezitishi zokumpompa, iindawo ezivalekileyo zecompressor, kunye neepaneli zolawulo ze-HVAC.
Ukupheliswa kokususwa kwe-insulation (IDC). Uqhagamshelwano olufana neblade olugqobhoza i-insulation yentambo kwaye luqhagamshelane nomqhubi xa ucingo lutyhalelwa kwindawo yokuphelisa. Ukupheliswa kwe-IDC kukhawuleza kakhulu (akukho mfuneko yokukrazula) kwaye kubonelela ngokumelana okuhle kakhulu nokungcangcazela, kodwa lufanelekile kuphela kwii-conductors eziqinileyo okanye ii-conductors ezixineneyo ngaphakathi koluhlu oluthile lobungakanani. Azifanelekanga kwii-conductors ezixineneyo. Kwi-wiring yokusasazwa kwe-PLC esebenzisa ii-wire eziqinileyo ezisikiweyo kwangaphambili kwiindawo zemveliso, ukupheliswa kwe-IDC kunokunciphisa ixesha lokuphelisa ngama-40-60% xa kuthelekiswa neendlela ze-screw clamp. Sichaza ukupheliswa kwe-IDC kubakhi beepaneli ze-OEM abaphelisa ubuninzi obukhulu bee-wire runs ezimiselweyo.
Izixhobo zeZindlu: PA6.6 vs. PPE/PPO kunye neZiphumo zokuSebenza
Izinto zendlu ye-terminal block zimisela ukusebenza kwayo kobushushu, ukubambezeleka komlilo, kunye nokumelana neekhemikhali—zonke ezi zinto zibalulekileyo kwiindawo zekhabhinethi ze-PLC apho izinto ezivelisa ubushushu ezifana nezixhobo zombane ze-PLC kunye neemodyuli zokuqhuba zenza amaqondo obushushu aphezulu. Izinto ezimbini zendlu eziphambili zeebhloko ze-terminal zemizi-mveliso yi-polyamide 6.6 (PA 6.6) kunye ne-modified polyphenylene ether/polyphenylene oxide (PPE/PPO blends).
I-PA 6.6 (edla ngokubizwa ngokuba yi-nylon) yeyona nto isetyenziswa kakhulu njengendlu yokugcina iibhloko. Iingenelo zayo eziphambili ngamandla abalaseleyo oomatshini, iipropati ezilungileyo ze-dielectric, kunye nokuhambelana okubanzi kweekhemikhali. I-PA 6.6 ifezekisa UL94 V-0 ukubambezeleka komlilo ubukhulu be-0.8 mm, okwanelisa iimfuno zokutsha I-IEC 60947-7-1Nangona kunjalo, i-PA 6.6 inomda wobushushu obusebenzayo obuqhubekayo obumalunga ne-105°C, kwaye ifunxa umswakama ngokuhamba kwexesha—nto leyo enokunciphisa amandla ayo e-dielectric ukuya kuthi ga kwi-30% kwiindawo ezinomswakama ophezulu.
Izixhobo zezindlu zePPE/PPO zibonelela ngokumelana nokufuma okuphezulu kunye nobushushu obuphezulu obuqhubekayo (ukuya kuthi ga kwi-115–120°C). Iimpawu zazo ze-dielectric zizinzile ngakumbi kumanqanaba okufuma, nto leyo eyenza ukuba zikhethwe kwiindawo zangaphandle okanye ezinomswakama ophezulu ze-PLC. Nangona kunjalo, i-PPE/PPO ibiza kakhulu kune-PA 6.6, kwaye ukumelana kwayo nempembelelo yoomatshini kubushushu obuphantsi kuphantsi—ngoko ke kusetyenziso oluqhelekileyo lwekhabhinethi ye-PLC yangaphakathi, i-PA 6.6 iselukhetho olungabizi kakhulu.
Kwiibhloko zesiphelo sokusasazwa kwe-PLC ezisetyenziswa kwiikhabhathi ezivalekileyo ezinamaqondo obushushu afikelela kwi-55°C (eziqhelekileyo kwiikhabhathi ezivalekileyo ezinezixhobo ezivelisa ubushushu), izindlu ze-PA 6.6 zanele. Ukufakela kwiindawo ezivalekileyo zangaphandle, ukukhanya kwelanga ngqo, okanye kwiindawo zoshishino ezinobushushu obuphezulu, sicebisa izindlu ze-PPE/PPO. Soloko uqinisekisa iinkcukacha zezinto zesakhiwo kwiphepha ledatha—amaphepha edatha amaninzi e-terminal block awacacisi ngokucacileyo izinto zesakhiwo, ekufuneka zibe yiflegi ebomvu.
Amanqaku esicelo: Ukufaka iiBhloko zesiphelo sendlela eziphezulu kwi-Real PLC Installations
Ukuba neebhloko zesiphelo ezibonelelweyo kwizicelo zokusasazwa kwe-PLC kumacandelo amaninzi—ukuhlanganiswa kweemoto, ukulungiswa kokutya neziselo, unyango lwamanzi, kunye nolawulo lwe-HVAC—ndifuna ukwabelana ngeendlela ezisebenzayo zokusetyenziswa ezihlala zibonelela ngeziphumo ezilungileyo kunye neempazamo zeenkcukacha ezihlala zikhokelela kwiingxaki kweli candelo.
Umgaqo wokusetyenziswa obaluleke kakhulu ngulo ukwahlulwahlulwa ngokohlobo lwesignaliKwikhabhathi ye-PLC enamanqanaba ombane axutyiweyo (ii-feeders ze-motor ze-480V AC, iisekethe zolawulo ze-230V AC, i-24V DC PLC I/O), iibhloko zesiphelo senqanaba ngalinye lombane kufuneka zahlulwe ngokwasemzimbeni, nokuba kukufakelwa kwiireyile ze-DIN ezahlukeneyo kunye nokwahlukana okucacileyo okanye ngokusebenzisa iibhloko zesiphelo zesitayile somqobo ezibonelela ngokwahlulahlula ngokwasemzimbeni phakathi kweesekethe ze-voltage ezahlukeneyo ezikufutshane. Olu kwahlulahlula luyimfuneko I-IEC 60204-1 (Ukhuseleko loomatshini—Izixhobo zombane) kwaye ayinyanzelekanga kwiinkqubo ezininzi zokuhlola ukhuseleko kwimizi-mveliso.
Kwicandelo lokusasazwa kwe-24V DC PLC I/O ngokukodwa, sicebisa ukusebenzisa uqwalaselo lwe-triple-deck apho idekhi ephezulu yibhasi yamandla eqhelekileyo (i-24V DC evela kumbane), idekhi ephakathi yondla iqela lokufaka le-PLC A, kwaye idekhi esezantsi yondla iqela lokufaka le-PLC B. Olu qwalaselo luvumela ibhasi eqhelekileyo ukuba yahlulwe ngeenjongo zokutshixa ngaphandle ngelixa omabini amaqela okufaka ehlala enikwe amandla, kwaye ivumela amaqela okufaka ngamanye ukuba aqhawulwe ukuze agcinwe ngaphandle kokuchaphazela elinye iqela.
Impazamo eqhelekileyo endiyibonayo kukunciphisa ubungakanani be-terminal block current rating yokusasazwa kwamandla e-PLC. I-24V DC power rail feeding32 PLC input channels kwi-20 mA ngetshaneli nganye ithwala i-640 mA iyonke—ngaphakathi kakuhle kwe-current rating yayo nayiphi na i-terminal block. Nangona kunjalo, i-inrush current evela kwiimodyuli zokufaka ze-PLC (ezinokuba yi-3-5x ye-steady-state current ngexesha lokunika amandla) zinokucinezela okomzuzwana i-distribution terminal block. Sicebisa ukuba kuchazwe ii-terminal blocks zokusasazwa kwamandla e-PLC nge-rated current ubuncinane i-150% ye-steady-state current ebaliweyo, ukubonelela nge-margin eyaneleyo ye-inrush kunye neemeko zempazamo.
Enye into enokuqwalaselwa yile: ulawulo lweentambo kunye nokuhambisa indlelaIibhloko zesiphelo ezinemigangatho emithathu zinciphisa inani leentambo kodwa zonyusa uxinano lweentambo kwindawo nganye yokumisa (iintambo ezintathu kwindawo enye). Oku kufuna ingqalelo enzulu ekubopheni iintambo kumqolo webhloko yesiphelo ukuqinisekisa ukuba akukho radius enye yokugoba kwentambo exineneyo kakhulu, nto leyo enokonakalisa ubushushu beentambo ngokuhamba kwexesha. Sicebisa ukuba kugcinwe ubuncinane i-radius yokugoba ephindwe kathathu kunobubanzi bangaphandle bentambo ukuze kusetyenziswe iintambo eziguquguqukayo.
Ukugcinwa, Ukusombulula iingxaki, kunye nokuguqulwa kwentsimi
Enye yezona ngxoxo zinamandla kakhulu kwiibhloko zesiphelo see-triple-density eziphezulu kwizicelo zokusasazwa kwe-PLC kukugcinwa kunye nokusombulula iingxaki ezibonelela ngazo. Xa itshaneli yokufaka ye-PLC ingaphumeleli kwiphaneli eneentambo zesiqhelo, inkqubo yokuxilonga ifuna ukulandelela intambo nganye ukusuka kwimodyuli yokufaka ibuyele kwibhloko yesiphelo ukuya kwisixhobo sentsimi—inkqubo enokuthabatha iiyure kwi-harness entsonkothileyo. Kwisixhobo esiyilwe kakuhle. ibhloko yesiphelo esineedekhi ezintathu Ufakelo, indlela yokuxilonga imfutshane kakhulu kuba indawo nganye yebhloko yesiphelo isebenza umsebenzi ochaziweyo noqikelelweyo.
Utshintsho lwentsimi—olwenzeka rhoqo kakhulu kunokuba uninzi lwabayili beenkqubo zolawulo belindele—iibhloko zesiphelo ezineedekhi ezintathu ezine-jumper bar yangaphandle yonxibelelwano olunqamlezileyo zibonelela ngeenzuzo ezongezelelweyo. Xa ulwandiso lwenkqubo ye-PLC lufuna ukongeza iziteshi zokufaka, inkqubo idla ngokukhawulelwa ekongezeni izikhundla ze-terminal block kwicandelo le-DIN rail elikhoyo, ukufaka ii-jumper bars ezintsha ukwandisa ibhasi yokusasaza kwiindawo ezintsha, kunye nokuphelisa iintambo ezintsha zentsimi. Oku kukhawuleza kakhulu kunokusebenzisa iintambo ezintsha zomntu ngamnye ukusuka kwi-terminal block array ukuya kwi-I/O point nganye entsha.
Ukuze kuqhubeke ukugcinwa, ndicebisa ukuba kusekwe ishedyuli yokuqinisekiswa kwe-torque ye-terminal block yokuphelisa i-screw-clamp kwiindawo ezinokungcangcazela okuphezulu. Ixesha le-torque lixhomekeke kwinqanaba lokungcangcazela: kwiikhabhinethi kwiindawo zoshishino ngokubanzi (imigangatho eqhelekileyo yeworkshop), ukuqinisekiswa kwe-torque yonyaka kwanele; kwiikhabhinethi ezikwiimashini ezingcangcazelayo (iipompo, ii-compressors, izikrini ezingcangcazelayo), ukuqinisekiswa kwesiqingatha sonyaka kulumke ngakumbi. Sebenzisa i-screwdriver ye-torque elinganisiweyo esekwe kwixabiso le-torque elichazwe kwi-datasheet—ngesiqhelo yi-0.5–0.8 Nm kwi-terminal block ye-4 mm².
Ukuqinisekiswa koMgangatho kunye nokuFumaneka kweMpahla: Oko Ufanele Ukukufune kuMboneleli Wakho
Akunjalo kwakona iibhloko zesiphelo ezinoxinano oluphezulu zenziwe zilingana, kwaye umahluko kwiinkcukacha ezahlula imveliso eyenziwe ngobuchule bokwenyani kwi-rebrand yempahla awubonakali rhoqo kwifoto yekhathalogu. Nantsi into endiyicebisayo ukuba uyifune kuwe. umthengisi weebhloko zesiphelo:
Cela i I-IEC 60947-7-1 ingxelo yovavanyoNawuphi na umenzi othi uyawuthobela lo mgangatho kufuneka akwazi ukubonelela ngengxelo yovavanyo evela kwilabhoratri yovavanyo evunyiweyo (efana I-TÜV Rheinland, UL, I-CSAokanye I-Bureau Veritas). Ingxelo yovavanyo ibhala amaxabiso alinganisiweyo okwenyani amandla e-dielectric, ukumelana nobushushu, ukunyuka kobushushu, kunye nokunyamezela koomatshini—hayi nje kuphela amanqaku achaziweyo. Umthengisi ongakwaziyo okanye ongazukubonelela ngolu xwebhu umele uphawu olubalulekileyo.
Qinisekisa i umlinganiselo we-voltage impulse kunye nezinga longcoliseko kwingxelo yovavanyo. Amaphepha amaninzi edatha e-generic terminal block adwelisa i- I-IEC 60947-7-1 ibango lokuthobela umthetho ngaphandle kokuchaza umlinganiselo we-voltage impulse okanye i-pollution degree—oko kuthetha ukuba ezo parameters azivavanywanga, okanye iziphumo zovavanyo bezimbi ngokwaneleyo kangangokuba zishiyiwe kwiphepha ledatha. Kwiindawo ze-PLC zemizi-mveliso, kufuneka ubone i-Pollution Degree 3 kunye ne-Impulse Voltage 4 kV okanye ngaphezulu njengeenkcazo ezincinci.
Qinisekisa i iphepha ledatha yezinto zezindluCela umgangatho wezinto zokwakha kunye UL94 umlinganiselo wokutsha. Iibhloko zesiphelo ze-PA 6.6 kufuneka ziqinisekiswe ukuba UL94 V-0 kubukhulu bodonga lwendlu esetyenzisiweyo kwimveliso. Ukuba umthengisi akanako ukubonelela ngephepha ledatha yezinto eziphathekayo, ibango lezinto zokwakha aliqinisekiswanga.
Vavanya iinkcukacha zokumelana nokuqhagamshelana. Ibhloko yesiphelo esisemgangathweni ophezulu kufuneka ibe nokumelana koqhagamshelwano okungaphantsi kwe-1 mΩ (milliohm) kumbane olinganisiweyo, olinganiswe kwindawo yokuphelisa ucingo. Amaxabiso aphezulu okumelana koqhagamshelwano abonisa ukulungiswa komphezulu woqhagamshelwano okuphantsi okanye uyilo olungaphantsi kolungelelwaniso lwentwasahlobo/i-clamp, zombini ezi zinto ziya kukhokelela ekusileleni kwangethuba kwizicelo zombane ophezulu okanye zobushushu obuphezulu.
Iindlela Ezivelayo: Iibhloko zeSitimela eziLungileyo kunye noDiagnostics oluDibeneyo
Imakethi yebloko yesiphelo iqala ukubona ukungeniswa kweempawu zokuxilonga ezidibeneyo ezazingenakwenzeka ngaphambili ngezinto ezingasebenziyo. Abavelisi abaliqela—kuquka i-J-Guang—baphuhlisa iimveliso zebloko yesiphelo ezinee-sensors zokujonga ezikhoyo, ii-LED zesimo, kunye neendawo zonxibelelwano ezivumela ibloko yesiphelo ngokwayo ukuba ixele imeko yayo kwi-PLC okanye kwi-BMS ngebhasi yedijithali.
Kwizicelo zokusasazwa kwe-PLC, uphuhliso oluthembisayo kakhulu kukuhlanganiswa iibhari zebhasi ezibona umsinga ezikwaziyo ukubona iisekethe ezivulekileyo okanye amaxabiso angaqhelekanga angoku kwiindawo zebloko yesiphelo ngasinye ngaphandle kwee-sensors zangaphandle ezongezelelweyo. Oku kwenza kube lula ukulumkisa ngokugcinwa kokhuseleko (endaweni yokusabela ekuhlulekeni okusebenzayo) kwinethiwekhi yokuhambisa intambo ye-PLC. Ibloko yesiphelo ene-sensor yangoku edibeneyo ebika kwi-PLC ngaphezulu kwe- I-Modbus RTU okanye I-CANopen ujongano lunokwazisa abaqhubi malunga neengxaki zonxibelelwano lwentambo ngaphambi kokuba zibangele ukungaphumeleli kokufaka i-PLC.
Sikwabona ukwanda kokwamkelwa iindlela zokukhulula ezingenazixhobo kwiibhloko zesiphelo sekheyiji yentwasahlobo ezivumela ukususwa kwentambo ngaphandle kwezixhobo—uphawu olunciphisa kakhulu ixesha lokufikelela kulondolozo. Ukudibanisa ukupheliswa kwekheyiji yentwasahlobo (ukuze kukhawuleziswe ukufakwa kokuqala) kunye nokukhululwa okungenazixhobo (ukuze kukhawuleziswe ukufikelela kulondolozo) kuyathandeka ngakumbi kwiindawo zokusasazwa kwe-PLC apho iindleko zokuqala zokwakha iiphaneli kunye neendleko zokulungisa eziqhubekayo zizinto ezibalulekileyo.
Imibuzo ebuzwa qho
Yintoni eyona nzuzo iphambili yeebhloko zesiphelo ezineedekhi ezintathu kuneebhloko zesiphelo ezinenqanaba elinye kulwabiwo lwe-PLC?
Iibhloko zesiphelo ezinemigangatho emithathu zibeka amanqanaba amathathu oqhagamshelwano azimeleyo kububanzi bemodyuli yesitimela se-DIN enye, okuvumela ukuba iisekethe ezintathu ezahlukeneyo zipheliswe kwindawo yesinye. Kwintambo yokusasazwa kwe-PLC, oku kunciphisa ububanzi bephaneli ukuya kuthi ga kwi-60% xa kuthelekiswa nolungelelwaniso olulinganayo lwenqanaba elinye, kunciphisa inani leebhloko zesiphelo kakhulu, kwaye kwenza kube lula ukuxhuma ngokudibanisa i-power rail eqhelekileyo kunye neesekethe ezininzi zamasebe zibe sisixhobo esinye.
Ingaba yin I-IEC 60947-7-1 Ukuthobela kuthetha ukuthini ukukhethwa kwebhloko yesiphelo?
I-IEC 60947-7-1 yimigangatho yamazwe ngamazwe elawula iibhloko zesiphelo semodyuli zee-copper copper. Ukuthobela imithetho kuthetha ukuba imveliso iphumelele uvavanyo oluqhelekileyo lwe-mechanical, electrical, kunye nolwendalo oluquka amandla e-dielectric (ngesiqhelo yi-2.5–8 kV impulse), ukumelana nobushushu, ukunyuka kobushushu kumbane olinganisiweyo, kunye nokujikeleza kokunyamezela kwe-mechanical. Soloko ucela ingxelo yovavanyo kwilabhoratri evunyiweyo—amabango ephepha ledatha ngaphandle kwamaxwebhu ovavanyo awanakungqinwa.
Yeyiphi indlela yokuphelisa intambo efanelekileyo kwiindawo ze-PLC ezingcangcazela kakhulu?
Ukuphela kweekheyiji zasentwasahlobo lolona khetho lufanelekileyo kwiindawo ze-PLC ezingcangcazela kakhulu kuba indlela esebenza ngayo intwasahlobo igcina amandla oqhagamshelwano angaguqukiyo nokuba kukho intshukumo ebangelwa kukungcangcazela. Ukuphela kweekheyiji zesikrufu kunokukhululeka xa kungcangcazela okuqhubekayo, okukhokelela ekuchaseni okungaphezulu koqhagamshelwano, ukufudumeza okukufutshane, kunye nokusilela ekugqibeleni. Kwiimeko eziqhelekileyo zoshishino ngaphandle kokungcangcazela okugqithisileyo, nokuba yi-screw clamp okanye yi-spring cage inika ukuthembeka okwaneleyo.
Ndingayilinganisa njani ibhloko yesiphelo sombane ye-PLC 24V DC?
Bala i-total steady-state current (isimbuku sayo yonke i-PLC input channel currents), uze uchaze i-terminal block elinganiswe ubuncinane kwi-150% yelo xabiso ukuze ivumelane ne-inrush current. Umzekelo, ama-32 PLC inputs kwi-20 mA nganye = 640 mA iyonke; chaza i-terminal block elinganiswe ubuncinane kwi-1A. I-voltage elinganisiweyo kufuneka ibe yi-630V AC ubuncinci nge I-IEC 60947-7-1, nokuba kusekwisekethe ze-24V DC, ukubonelela ngemilinganiselo yokhuseleko eyaneleyo kunye novavanyo lwezinga longcoliseko.
Zeziphi izinto zendlu endifanele ndizichaze kwikhabhinethi ye-PLC esebenza kwi-ambient engama-50°C?
Kwiikhabhathi ze-PLC ezivalekileyo ezifikelela kwi-55°C kubushushu obuqhelekileyo, izindlu ze-PA 6.6 (polyamide 6.6) zilinganiswe kwi UL94 V-0 kubukhulu obuyi-0.8 mm kwanele. Nangona kunjalo, i-PA 6.6 ifunxa umswakama ngokuhamba kwexesha, nto leyo enciphisa amandla e-dielectric kwiimeko ezinomswakama ophezulu. Kwii-enclosures zangaphandle, kwiindawo ezinomswakama ophezulu, okanye kumaqondo obushushu angaphezulu kwama-85°C, indlu ye-PPE/PPO inika ukumelana nokufuma okuphezulu kunye nobushushu obuphezulu bokusebenza obuqhubekayo (ukuya kuthi ga kwi-115–120°C).
Yintoni umahluko phakathi kwebha yebhasi yangaphakathi kunye nebha yejumper yangaphandle edibanisa unxibelelwano olunqamlezileyo?
Ibha yebhasi yangaphakathi idibanisa iidekhi ezintathu kwisixhobo esinye sebhloko yesiphelo, ivumela uyilo lwebha ye-triple-deck shared-current-bar. Ibha ye-jumper yangaphandle idibanisa izixhobo ezininzi zebhloko yesiphelo ezikufutshane ecaleni kwecandelo le-DIN rail, idala ibhasi yokusasaza eqhelekileyo kumqolo webhloko yesiphelo. Iibha zebhasi zangaphakathi zibonelela ngonxibelelwano lwangaphakathi kwesixhobo; iibha ze-jumper zangaphandle zibonelela ngonxibelelwano phakathi kwesixhobo. Zombini ziyafuneka kuyilo olupheleleyo lokusasaza lwe-PLC.
Ndingaziqinisekisa njani izibango zomgangatho womthengisi weebhloko zesiphelo?
Cela i I-IEC 60947-7-1 ingxelo yovavanyo evela kwilabhoratri yovavanyo evunyiweyo (I-TÜV Rheinland, UL, I-CSAokanye I-Bureau Veritas). Ingxelo kufuneka ibhale amaxabiso achanekileyo alinganisiweyo amandla e-dielectric, i-impulse voltage, i-pollution degree, ukunyuka kobushushu, kunye nokunyamezela koomatshini—hayi nje kuphela amanqaku achaziweyo. Kwakhona cela iphepha ledatha lezinto zendlu kunye UL94 ukulinganisa, kwaye uqinisekise iinkcukacha zokumelana nokuxinana (kufuneka zibe ngaphantsi kwe-1 mΩ). Ababoneleli abangenako ukubonelela ngala maxwebhu basengozini enkulu yomgangatho.
Luluphi ulondolozo olufunekayo kwikhabhinethi ye-PLC oluyi-triple-deck terminal block?
Imfuneko ephambili yokugcinwa kweebhloko zesiphelo se-screw clamp kwiindawo ezinokungcangcazela okuphezulu kukuqinisekiswa kwe-torque rhoqo (ngonyaka kwiindawo zoshishino eziqhelekileyo, isiqingatha sonyaka kwiikhabhathi zoomatshini abangcangcazelayo). Iziphelo zekheyiji yasentwasahlobo azifuni kugcinwa kwe-torque kodwa kufuneka zihlolwe rhoqo ukuze zijongane nentwasahlobo ngokufanelekileyo. Zonke iibhloko zesiphelo kufuneka zihlolwe ngokubonakalayo minyaka le ukuze zibone iimpawu zokushisa kakhulu (ukutshintsha kombala, ukulandelwa kwekhabhoni kwikhabhathi), kwaye nayiphi na ibhloko yesiphelo ebonisa ezi mpawu kufuneka itshintshwe ngoko nangoko.