Allen-Bradley 1769-OA8 MicroLogix 1500 Module na AC mai babban ƙarfin lantarki

Bayanin Samfur (Product Overview)

1769-OA8 na’urar fitowar dijital ce ta AC mai ƙarfin wuta kuma mai yawan tashoshi, wadda kamfanin Allen-Bradley ya ƙera don layin kayan Compact I/O. Tana ɗauke da tashoshi 8 na solid-state marasa keɓewa, an shirya su cikin rukunai guda biyu masu keɓantacciyar ƙasa, kowanne yana ɗauke da tashoshi huɗu, wanda ke ba da damar sarrafa da dama na matakan lokaci iri-iri a lokaci guda. Tana aiki a cikin babban zangon wuta na 85 VAC zuwa 265 VAC (ajin al’ada 120/240V AC), kuma tana amfani da na’urorin sauya wuta na thyristor (Triac) na solid-state na ci gaba. Da nauyin 0.27 kg (0.60 lbs), tana aiki a matsayin ƙarfaffiyar na’urar sarrafa na’urorin aiki masu babban wuta ga na’urorin sarrafawa 1769 CompactLogix da tsarin faɗaɗa MicroLogix 1500.

Manyan Fa’idodin Fasaha

Sauya Wuta ta Triac Solid-State Mai Zero-Cross

1769-OA8 yana amfani da nau’in maɓallan Triac na ƙarfi (solid-state) maimakon relay na inji. Wannan tsarin yana samar da sauya wutar AC a lokacin ketare-sifili (zero-cross) wanda ke rage zafin jiki, yana kawar da walƙiyar tuntuɓar lantarki, kuma yana rage tsangwamar lantarki (EMI). Martanin sigina yana aiki ne cikin ɗawainiya ta rabin-zagaye (1/2-cycle) na juyawa a kunne da kashewa.

Tsarin Wayoyi na Rukuni Biyu Masu Keɓantacciyar Ƙasa

Makamashi 8 na fitarwa an shirya su zuwa rukuni 2 masu zaman kansu, kowanne na ɗauke da tashoshi 4. Wannan keɓe-kan-lantarki yana ba injiniyoyin sarrafawa damar bayar da tushe-tushen wutar AC daban-daban ko matakan layin wuta daban zuwa kowanne rukuni a kan wannan katin faɗaɗa guda, yana sauƙaƙa tsara rabon wuta na yankuna.

Ƙaramin Jan Wuta daga Backplane da Ƙananan Zafi

Ko da yake na’urar tana sarrafa na’urorin filin da ke aiki da babban wutar lantarki, ƙarin tana kiyaye ingantaccen amfani da wutar lantarki a cikin kanta. Tana ja mafi yawanci 145 mA kawai daga layin baya na tsarin 5VDC (daidai da cin wutar ciki 1.125W), wanda ke hana yawan zafin jiki a cikin kwandon sarrafawa da aka rufe.

Ƙayyadaddun Fasaha

Shigarwa da Kula da Na'urar

Tarin Sashen Bas da Ƙullewa ta Hanyar Inji

Koyaushe ka ware ko ka katse layin wutar tsarin gaba ɗaya kafin ka girka wani kayan aiki. Sanya na'urar 1769-OA8 ta zame a kan bayanan 35mm DIN rail ko ka ɗaure ta da kusoshi a bayan farantin tushe. Haɗa gefen sanda-da-groove (tongue-and-groove) don haɗa kati ɗin da gefen dama na jerin tarin kayan Compact I/O. Tura sandunan kullewa na sama da na ƙasa gaba don su kulle hanyoyin bas ɗin da kyau.

Dokokin Ƙuntata Nisan Samun Wutar Lantarki

1769-OA8 tana da ƙa'idar nisan wutar lantarki ta 8. Wannan yana nufin ba za a iya sanya na'urar fiye da ramuka 8 nesa da na'urar samar da wutar tsarin 1769 ba (misali 1769-PA2 ko 1769-PB4). Idan tsari ko jerin na'urorinka na gida ya wuce ƙarin na'urori 8, dole ne a ƙara wani ƙaramin bangaren faɗaɗa ko ƙarin na'urar samar da wuta domin daidaita layukan sigina.

Mafi Ƙarancin Nauyin Fitarwa da Yayyafar Yanzu

Domin wannan na'urar tana amfani da maɓallan AC na ƙwararrun lantarki (solid-state), ƙananan hanyoyin yayyafa wuta suna wucewa ta cikin sanduna ko da lokacin da an kashe ta. Idan kana haɗa wannan na'urar da kayan filɗin da ke cin ƙaramin wuta kamar ƙananan fitilun nuna alama ko na'urorin relé masu babban juriya, ka tabbatar ana jan wutar su ta zarce ƙaramin ƙimar da'irar riƙewa da ake buƙata na na'urar. Idan nauyin ya yi ƙanƙanta, na'urar na iya kasa kashewa gaba ɗaya, wanda zai buƙaci saka wani resistor mai zubar da wuta a layi ɗaya da tashoshin filɗin.

Fa'idodin Injiniya

Haɓakawa Mafi Dacewa don Lambobin AC Masu Ƙarfin Sauya-sauye

Masu tuntuɓar relays na inji kan lalace da lokaci idan suna juyawa nauyukan shigar inductive masu nauyi kamar kwantakokin AC 120V ko masu farawa na mota. Tsarin kayan lantarki (solid-state) na 1769-OA8 yana kawar da lalacewar tuntuɓar jiki gaba ɗaya, yana tsawaita rayuwar aiki ta nodes ɗin sarrafawa kuma yana rage lokacin da ake tsayawa don gyara.

Sauƙaƙa Haɗa Sigina na Matakai da Dama

Tsarin rukuni biyu masu zaman kansu (dual isolated common group) yana ba ka damar sarrafa madaukurin kulawa 120VAC da 240VAC a kan kati ɗaya na fitarwa. Wannan yana rage yawan adadin modules da ake buƙata a shigarwar haɗa nau’ukan wuta (hybrid), yana ajiye sarari a cikin ƙananan akwatunan lantarki.

Dacewa cikin Sauƙi da Tsofaffi da Sabbin Tsarin

Cikakkiyar dacewar sa da dandalin mai kula MicroLogix 1500 da kuma jerin CompactLogix na modular na sa wannan module ɗin ya kasance mai matuƙar sassauci. Yana aiki a matsayin abin maye-gurbin abin dogaro ga tsoffin kayan masarufi na masana’anta da kuma zaɓi abin dogaro don faɗaɗa sabbin tsarin sarrafa kansu.

Tambayoyin fasaha na yau da kullum (Technical FAQs)

Q1: Me yasa kwantakon AC nawa ke yin amo ko kuma ya kasa kashewa idan aka haɗa shi da 1769-OA8?
A1: Wannan matsalar yawanci tana faruwa ne saboda ƙaramin yawan wutar da ke tsallakawa a cikin kayan lantarki (solid-state leakage current). Saboda Triacs ba sa yin cikakkiyar katsewa ta inji, ƙaramin wutar tsallakawa kan ci gaba da kasancewa. Idan wannan ƙaramar wuta ta wuce ƙarfin “drop-out” na ƙaramin kwantako, zai iya makalewa a matsayin KUNNE (ON). Ƙara da’irar “resistor-capacitor (RC) snubber” ko kuma ƙarfin kaya (load resistor) a layi ɗaya da na’urar yana magance matsalar.

Q2: Zan iya amfani da wannan module ɗin don sarrafa madaukurin filɗi na wutar DC?
A2: A’a. Kayan cikin sa na yanayin ƙarfi suna amfani da maɓallan Triac, waɗanda ke buƙatar yanayin ketare-sifili na wutar madauwari (AC) kafin su kashe. Idan aka yi amfani da wutar DC a kan 1769-OA8, tashar za ta makale a KUNNE (ON) dindindin bayan tayarwar farko, ba za ta kashe ba sai an yanke wutar tsarin DC gaba ɗaya.

Q3: Shin wannan module ɗin yana ɗauke da fis a ciki don kariya daga gajeriyar kewayen a filɗi?
A3: 1769-OA8 ba ta ƙunshi kariyar gajeriyar kewayen lantarki ta atomatik a ciki ba. Don kare Triacs na ciki daga lalacewar yawan ƙarfi saboda matsalolin wayoyi a filɗi, ana bada ƙwarin gwiwar sosai a saka fis (misali fis ɗin kayan auna masu saurin aiki) a layi ɗaya da kowace hanyar fitarwa.