Allen-Bradley CompactLogix 1769-L31 Series A mai sarrafa CPU

Takaitaccen Bayanin Samfur

1769-L31 na’ura ce mai ƙarfi, mai zaman kanta (standalone) daga cikin dangin sarrafawa na CompactLogix na Allen-Bradley da aka gwada amincinta. Yana zuwa da ƙwaƙwalwar mai amfani (user memory) 512KB da aka haɗa a ciki tare da zaɓin ajiya mara-goge (non-volatile flash storage). An ƙera wannan module ne musamman don ƙananan da matsakaicin tsarin sarrafa masana’antu. Tana zuwa da tashoshi biyu na sadarwar serial a jikin na’urar, wanda ke ba da tsarin sarrafawa mai rarrabewa (decentralized) mai rahusa don gudanar da jerin sarrafa injuna ba tare da buƙatar tsadar hanyar sadarwar Ethernet ba.

Manyan Fasali

• Tashoshi Biyu na Serial: Yana samar da layuka biyu na sadarwar RS-232 masu zaman kansu—Channel 0 mai rarrabuwar wutar lantarki (electrically isolated) da Channel 1 marar rarrabuwar wuta (non-isolated).
• Babban Ikon Faɗaɗa Module: Yana tallafa wa aiwatar da tsare-tsaren sarrafawa masu rikitarwa tare da iya haɗa har zuwa modules 16 na 1769 Compact I/O na asali, da aka raba zuwa bangarori 3 na faɗaɗawa.
• Sauƙin Yin Aiki da Yawancin Hanyoyin Sadarwa: Yana sarrafa jadawalin bayanai (data tables) ba tare da tangarda ba ta amfani da tsofaffin hanyoyin sadarwar masana’antu irin su DF1, DH-485, da kuma jerin haruffan ASCII (raw ASCII strings).
• Tsarin Gini Mai Ƙarfi: An ƙera shi ne don ya jure mummunan yanayin masana’antu, yana da juriya ga girgizar aiki har 5G da kuma girgiza injiniya (mechanical shock) har zuwa 30G.

Ƙayyadaddun Fasaha

Jagorar Injiniya & Shigarwa

• Daidaita Daurin Shigarwa & Ƙarfafa Nauyi: Tare da nauyin kusan 0.73 kg, a daure mai sarrafawar (processor) da ƙarfi a kan TS35 DIN rail da aka haɗa da ƙasa (grounded) ko kuma a daure shi kai tsaye a kan farantin shigarwa mai ƙarfi. Saboda yana amfani da tsarin chassis na open-style, dole ne a shigar da shi a cikin kabad mai kariya (protective enclosure cabinet) marar ƙura wanda yake da tsarin kariya na NEMA ko IP54.
• Iyakar Nisa Tsakanin Samar da Wuta: Ku bi ƙa’idar tsarin iyakar modules 4 kawai. Katin mai sarrafawa 1769-L31 ba zai iya kasancewa fiye da ramuka 4 na faɗaɗawa daga module ɗin samar da wuta na tsarin sa (misali, 1769-PA2 ko 1769-PB2) ba, idan ba haka ba raguwar ƙarfin wuta za ta lalata kwanciyar hankalin backplane logic.
• Shiryawa da Juyar da Kablolin Expansion Bank: Lokacin da kuke raba tsarin ku zuwa iyakar modules 16 na I/O a cikin bankuna 3 na faɗaɗawa, ku tsuke ƙananan keblolin faɗaɗa banki na dama/hagu 1769-CRR1 ko 1769-CRL1 sosai. Kullum ku saka ƙarshen rufewa (end cap) da aka amince da shi na 1769-ECR ko 1769-ECL don kulle layukan bus ɗin da suka buɗe.
• Sarrafa Rarrabuwar Tashar Serial: Channel 0 yana da cikakkiyar kariya ta rarrabuwar wutar lantarki (electrical isolation) don haɗa na’urorin filin gefe (peripheral field devices) kamar modem, na’urar karanta barcode, ko RTUs na ɓangare na uku cikin aminci. Akasin haka, Channel 1 gaba ɗaya ba shi da rarrabuwar wuta (non-isolated), don haka dole ne a haɗa shi ne kawai da kayan aiki na gida da ke da irin wannan grounding ɗin, kamar kwamfutocin shirye-shirye (programming laptops) ko HMI terminals, don guje wa ground loops.

Tambayoyin Fasaha Masu Yawan Yi (FAQs)

Q1: Me yasa mai sarrafawa 1769-L31 ke zuwa da batirin lithium 1769-BA?
A1: Batirin lithium 1769-BA yana samar da muhimmin wutar ajiya (backup voltage) don kiyaye ƙwaƙwalwar mai amfani ta SRAM 512KB mara tabbas (volatile) tana ci gaba da aiki idan an yanke babbar wuta. Wannan yana tabbatar da cewa lambar aikace-aikacen ku, jerin tag database, da rikodin abubuwan tsarin (event logs) suna ci gaba da kasancewa lafiya. Kullum ku lura da fitilar gano matsala ta gaba mai alamar "BAT" kuma ku maye gurbin batirin yayin da wuta take kunne don kauce wa rasa shirin.

Q2: Zan iya kwafe ko canja shirin runtime dina zuwa ajiya mara-goge ba tare da amfani da software ba?
A2: Eh. Ta hanyar saka katin CompactFlash na masana’antu 1784-CF64 ko 1784-CF128, za ku iya saita CPU ta RSLogix 5000 don ta dinga loda hoton ƙwaƙwalwar shirin (program memory image) ta atomatik zuwa sararin mai sarrafawa na cikin SRAM duk lokacin da aka kunna wuta, wanda hakan ke sauƙaƙa dawo da tsarin idan batiri ya gaza.

Q3: Ta yaya fitilun gano matsala (diagnostic status LEDs) dabam-dabam ke taimakawa wajen warware matsaloli a wurin aiki?
A3: Mai sarrafawar yana da fitilu masu nuna yanayi a sarari: fitilar RUN tana tabbatar da cewa ayyukan scanning suna aiki, fitilar FORCE tana nuna cewa akwai I/O overrides da ke aiki, kuma fitilar OK tana kyalli kore ko ta koma ja don nuna lafiyar aikin sarrafawa. Fitilu na musamman na DHC0 da Channel suna kyalli don nuna canjin bayanan TX/RX da ke aiki, wanda ke tabbatar da zagayen sadarwar serial na aiki ba tare da amfani da multimeter ba.