Allen Bradley 1746-NI4

Kulawulo lwenkqubo, ukuchaneka kwedatha akukhethi. Uxinzelelo lwe-2% lunokuzalisa ngaphezulu itanki. Umqondiso wokuhamba ngengxolo unokubangela ukuba impompo iphakame. I-level transmitter ene-drift inokuvala ibhetshi. Imodyuli ye-analog ye-Allen Bradley 1746-NI4 ilungisa le mingcipheko.

Zeziphi iimpawu eziphambili?

Xa ubambe le modyuli esandleni sakho, umbono wokuqala kukuba "ingqindilili" kwaye "ichanekile". Isingxobo sayo senziwe ngeplastiki eluhlaza eshinyeneyo yodidi lweshishini, enesiphelo sematte kumphezulu. Kuvakala kumnandi kakhulu ukubamba kwaye akuthandeki ukutyibilika. Uyilo kwipaneli lulula kakhulu kwaye luhle. Eyona nto ibalaseleyo kuluhlu lwezibane zesimo se-LED ezihambelana neziteshi ezi-4. Ngokukhawuleza ukuba isitishi sifumana isignali, ukukhanya okuluhlaza kuya kuvulwa, okubonakalayo ngokukodwa. Ibhloko ye-terminal enkulu kunye ne-detachable ephezulu ibonakala yomelele kakhulu, inika ingcamango yokuba inokumelana ne-wiring yexesha elide kwaye rhoqo.

Luluphi ulwakhiwo loyilo?

Ibhodi yesekethe yale modyuli ye-Allen Bradley 1746-NI4 ixhotyiswe nge-analog-to-digital converter kunye nesekethe yokucoca kumjelo ngamnye. Kufana nokunika itshaneli nganye yomqondiso "isikrini" sokuhluza yonke ingxolo kunye nokuphazamiseka kwisayithi, kushiya kuphela imiqondiso yokwenyani. Amacandelo e-elektroniki angaphakathi ahlelwe ngokufanelekileyo, kwaye iindawo eziphambili zikhuselwe ngokugquma i-insulating. I-96-pin back panel interface ngasemva inazo zonke izikhonkwane zegolide, ezinobunzima obuphezulu. Xa ifakwe kwisakhelo, uqhagamshelwano luqinile ngokukodwa kwaye akoyiki ukungcangcazela.

Ugcino kunye neNgcebiso zokuSebenza

Ukugcinwa kwale modyuli kulula kakhulu. Kufuneka igcinwe kwikhabhinethi ngamaxesha onke. Into ebaluleke kakhulu kukuthintela uthuli ekuqokeleleni kwiindawo zokungena umoya, njengoko oku kunokuchaphazela ukutshatyalaliswa kobushushu. Kwakhona, kuyimfuneko ukujonga rhoqo izikrufu zoqhagamshelo kwibhloko ye-terminal ukuqinisekisa ukuba azikhululekanga. Ukuba zikhululekile, ukuchasana koqhagamshelwano kuya kwanda, kwaye ukufundwa kuya kuba kungachanekanga. Ukuba ingasetyenziswanga ixesha elide, kucetyiswa ukuba uyikhuphe kwaye uyibeke kwi-bag anti-static, kwaye uyigcine kwikhabhinethi elawulwa yiqondo lokushisa kunye neyomileyo. Ingongoma ebaluleke kakhulu kukuba xa udibanisa iingcingo, kufuneka uhlukanise ngokucacileyo izibonda ezintle kunye nezibi. Musa ukuzidibanisa ngokungalunganga, njengoko ukwenza njalo kunokukhokelela ekufundweni okungachanekanga okanye ukutshisa imodyuli.

Iinzuzo zolungiselelo

Kulo shishini, wonke umntu uyazi ukuba ukuba imodyuli ye-analog kwisayithi iyaphuka, uxinzelelo kunye nedatha yokuhamba iya kulahleka, kwaye imveliso inokuthi ihlangabezane neengozi. ITekhnoloji yeFeimu iyasebenza kakhulu kulo mba. Kwimodeli eqhelekileyo ye-1746-NI4, sizinikezele isitokhwe kwindawo yokugcina impahla kwaye sinokuhambisa iimpahla ngosuku olufanayo lomyalelo. Kwimeko engxamiseke kakhulu, sinokulungiselela eyona nqwelomoya ikhawulezayo kuwe, kwaye imveliso iya kuhanjiswa kuwe ngaphakathi kweentsuku ezimbini okanye ezintathu. Into ekufuneka siyenzile kukuthintela inkqubo yakho ekubeni ingasebenzi ngenxa yokungabikho kwemodyuli yokufaka.

Uqwalaselo loNgeniso loMqondiso kunye neeNcingo

I-Allen Bradley 1746-NI4 isebenzisa ibhloko ye-terminal ekhutshwayo ebekwe phezulu kwimodyuli. Ijelo ngalinye lineetheminali ezimbini: IN + kunye ne-IN-.

Iingcingo zesignali yangoku (4-20mA okanye 0-20mA): Qhagamshela i-transmitter positive wire kwi-IN+. Qhagamshela ucingo olulandulayo kwi-IN-. Imodyuli ifunda ukuhla kwamandla ombane ngapha kwe-250Ω isixhasi sangaphakathi. I-transmitter kufuneka inikwe amandla e-loop ukusuka kubonelelo lwangaphandle. Musa ukudibanisa amandla e-loop kwimodyuli. Imodyuli ayiboneleli ngamandla e-loop.

Iingcingo zombane wombane (0-10V okanye ±10V): Qhagamshela ucingo olulungileyo kwi-IN+. Qhagamshela ucingo olukhabayo lwesignali ku-IN-. Uthintelo lwegalelo lukhulu kune 100 MΩ. Le impedance ephezulu ithintela ukulayishwa komqondiso.

Ukusebenzisa ii-2-wire transmitters: Qhagamshela i-transmitter positive wire kwi-terminal evumayo yonikezelo lwamandla lwangaphandle. Qhagamshela i-transmitter negative wire kwi-IN+. Qhagamshela IN- kwitheminali yonikezelo lwamandla engalunganga. Oku kugqiba i-loop yangoku ngemodyuli.

Ukusebenzisa ii-3-wire transmitters: Qhagamshela amandla okuhambisa kakuhle kunikezelo lwangaphandle olulungileyo. Qhagamshela isidluliseli samandla esinegative kunikezelo lwangaphandle olungalunganga. Qhagamshela isignali yesidlulisi evumayo kwi-IN+. Qhagamshela i-transmitter signal negative kwi-negative yonikezelo lwangaphandle (okanye kwi-IN- ukuba iyedwa).

Uqwalaselo lwesitishi: Sebenzisa iRSLogix 500 ukukhetha uhlobo lwegalelo kwitshaneli nganye. Izinketho ziquka i-4-20mA, 0-20mA, 0-10V, ± 10V. Kwakhona khetha ifomathi yedatha. Iiyunithi zobunjineli (ezilinganiswe kuluhlu lothumelo) lolona khetho luqhelekileyo.

Umcimbi oqhelekileyo wentsimi: Imodyuli ifunda i-0mA okanye i-0V nangona i-transmitter inamandla. Unobangela: I-transmitter negative iqhagamshelwe kwi-IN- kodwa i-negative yamandla e-transmitter iqhagamshelwe kumhlaba wobonelelo lwamandla, idala iluphu yomhlaba. Ukulungisa: Sebenzisa unikezelo lwamandla olulodwa kwisithumeli ngasinye. Okanye sebenzisa i-3-wire transmitter eyahlula amandla kunye neendawo zomqondiso.

Ukuchaneka kwedatha kunye noHlelo

I-1746-NI4 ineempawu ezimbini eziyahlula kwiimodyuli ze-analog eziphantsi kwexabiso eliphantsi: i-ADC nganye kunye nokucoca okunokulungiswa.

I-ADC yetshaneli nganye: Itshaneli nganye ine-analog-to-digital converter yayo. Oku kuthetha ukuba zonke iitshaneli ezi-4 zihlaziywa ngaxeshanye. Akukho kulibaziseka kokuskena phakathi kwamajelo. Kwizicelo ezineempawu ezitshintsha ngokukhawuleza, oku kubalulekile.

Uhluzo lwedijithali: Imodyuli isebenzisa isihluzo sedijithali kwitshaneli nganye. Isihluzi sisusa ingxolo ye-frequency ephezulu kwiimotor, drives, kunye nolunye ukuphazamiseka kombane. Isihluzo esihlala sihleli yi-50Hz kunye ne-60Hz yokulahlwa. Oku kufanelekile kwiindawo ezininzi zemizi-mveliso.

Ixesha lokumisa: Xa isignali itshintsha, imveliso yemodyuli ifikelela kwixabiso elitsha emva kwe-50ms. Ngokucoca okuvuliweyo, ixesha lokumisa lidlulela kwi-100ms. Kwiinkqubo ezininzi, oku akungomba. Kwizicelo zokuphendula ngokukhawuleza, sebenzisa i-1746-NI4 ngesihluzo sikhutshiwe.

Ukulungiswa nini ukuhluza: Ukuba ufundo luguquguquka ngaphezulu kwe-0.5% ngaphandle kwesizathu, vumela ukuhluzwa okongeziweyo. Oku kunokwenziwa kuqwalaselo lomjelo. Ukuba ufundo lucotha ukuphendula, nciphisa inani leesampuli ezinomndilili. Urhwebo luzinzo xa kuthelekiswa nesantya sokuphendula.

Ukunyaniseka kuHlola i-1746-NI4

Iimodyuli zika-Allen Bradley zenziwe ngomgunyathi ngokubanzi. Sebenzisa ezi tshekhi zintlanu ukuqinisekisa ukuba i-1746-NI4 yakho yeyenyani.

Umbala wephaneli yangaphambili: Iimodyuli zokwenyani zika-Allen Bradley zisebenzisa umbala othile oluhlaza, hayi luhlaza mnyama, hayi ukukhanya okuluhlaza. Umbala unesiphelo sematte. Iiphaneli zomgunyathi zihlala zibengezela kakhulu okanye zibe nomthunzi ongafanelekanga.

Izikhonkwane zokudibanisa umqolo: Zonke izikhonkwane ezingama-96 kwisinxibelelanisi se-backplane kufuneka zenziwe ngegolide kwaye zithe tye. Iimodyuli zomgunyathi zihlala zisebenzisa izikhonkwane ezinetoti. Izikhonkwane zenkcenkce zibonisa umbala ongwevu ongacacanga. Izikhonkwane zegolide zibonisa umbala oqaqambileyo otyheli-obugolide.

Ileyibhile yebhloko yetheminali: Ibhloko yeterminal ineleyibhile enenombolo yemodyuli 1746-NI4 eprintiweyo kuyo. Ileyibhile isisigxina. Ayixobuki. Iilebhile zomgunyathi zihlala zixobula emaphethelweni.

Indlela yokuqhafaza: Umphezulu kunye nasezantsi iiletshi kwimodyuli cofa ngokuqinileyo. Abahexazeli. Kwiimodyuli zomgunyathi, iiletshi zihlala zikhululekile kwaye azitshixwanga ngokufanelekileyo.

Ubunzima: I-1746-NI4 yokwenene inobunzima obumalunga ne-0.45 kg. Iimodyuli zomgunyathi zihlala ziziva zikhaphukhaphu kuba zisebenzisa izinto ezincinci zangaphakathi.

Inkqubo yoVavanyo kunye neWaranti

I-Feimu Technology ayithumeli iimodyuli ezingavavanywanga. Ngamnye u-Allen Bradley 1746-NI4 uhamba kule nkqubo ilandelayo ngaphambi kokuba ashiye indawo yethu yokugcina impahla.

Inyathelo loku-1 - Uhlolo olubonakalayo: Iphaneli yangaphambili ikhangelwe imikrwelo kunye nombala ochanekileyo. Ibhloko yetheminali ihlolwe kwizikhonkwane ezigobileyo. I-Latch mechanism ivavanyelwe ukucofa okuqinileyo. Isiqhagamsheli se-backplane sikhangelwe izikhonkwane ezigobileyo.

Inyathelo lesi-2 - Uvavanyo lwe-backplane: Imodyuli efakwe kwi-SLC 500 chassis. Kusetyenziswa amandla. Imodyuli yamandla e-LED iqinisekisiwe. RSLogix 500 kwi-intanethi. Imodyuli yamkelwa ngumlawuli. Akukho zibane zoziphene.

Inyathelo lesi-3 - Uvavanyo lwesitishi: Umthombo wesignali we-4-20mA uqhagamshelwe kumjelo ngamnye ngokulandelelana. Ukufunda kuqinisekisiwe kwi-4mA kunye ne-20mA. Ukuchaneka kuqinisekisiwe ngaphakathi kwe-0.1% yokunyamezela. Onke amajelo ama-4 avavanyiwe.

Inyathelo lesi-4 - Uvavanyo lwefomathi yedatha: Imodyuli elungiselelwe iiyunithi zobunjineli. Ukufunda kuqinisekisiwe ngokuchasene nomthombo womqondiso. Umqondiso we-12mA kufuneka ufunde i-50% yoluhlu. Umqondiso we-16mA kufuneka ufunde i-75% yoluhlu. Amaxabiso aqinisekisiwe kwisilawuli.

Inyathelo lesi-5 - Ukupakishwa: Imodyuli ifakwe kwi-anti-static bag. Itywiniwe. Ifakwe kwibhokisi ene-foam. Ilebhile ngenombolo yemodyuli kunye nomhla wovavanyo.

Iwaranti: iinyanga ezili-12 ukusuka kumhla wokuthunyelwa. Igubungela iziphene zemveliso kunye nokusilela kwecandelo. Ukuba imodyuli iyasilela ngexesha lewaranti, siyibuyisela endaweni yayo. Akukho ntlawulo yokulungisa. Akukho ntlawulo yokubuyisela isitokhwe. Sigubungela ukuthunyelwa ngenqanawa kwiiyunithi ezineziphene.