Tsarin I/A Series® shine dandamalin sarrafa kansa mai hankali wanda Invensys Foxboro ya haɓaka (yanzu wani ɓangare na Schneider Electric), ana amfani dashi sosai a cikin masana'antar sarrafa tsari. Safe na Cikin Gida (IS) I/O Subsystem wani muhimmin sashi ne da aka tsara don amintaccen siginar amintaccen saye da sarrafawa a cikin yuwuwar fashewar yanayi (misali, Yanki 1/Zone 21 ko Yanki 2/Zone 22).
Tushen wannan tsarin shine Module Sadarwar Sadarwar Intrinsically Safe (ISCM), wacce ke aiki azaman gada tsakanin na'urori masu sarrafa I/A Series (kamar FCP270 ko ZCP270) da Pepperl+Fuchs (P+F) amintattun I/O modules. ISCM tana goyan bayan nau'ikan nau'ikan P+FI/O guda biyu: LB-Style (na Yanki 2/Div. 2 mahalli) da FB-Style (don yanayin Yanki 1). Ta hanyar ISCM, waɗannan nau'ikan I/O na ɓangare na uku ana gane su kuma ana sarrafa su ta tsarin I/A Series kamar daidaitattun Modulolin Fieldbus na 200 (FBMs).
Siffofin Tsarin & Ƙarfi
1. Faɗin Taimako na Module
ISCM tana goyan bayan nau'ikan P+F da yawa masu aminci na I/O, gami da:
Modules Input/Output Analog: misali, shigarwar 4-20 mA (LB 3104), shigarwar thermocouple/RTD (LB 5102 F), fitowar analog (LB 4104), da sauransu.
Modules Input/Fitarwa na Dijital: misali, shigarwar dijital ta tashoshi 8 (LB 1108), fitarwa na dijital tare da ra'ayin matsayi (LB 2101), da sauransu.
Modulolin Sadarwa na HART: Goyan bayan nau'ikan I/O analog masu kunna HART (misali, LB 3102 A), ba da damar sadarwar dijital da daidaitawa tare da kayan aiki masu wayo.
Ƙididdigar bugun jini da Modulolin Mitar: misali, LB 1104 F (ƙididdigar bugun jini + gano jagora), LB 1103 F (shigar da mitar), da sauransu.
2. Redundancy & Babban Samuwar
Yana goyan bayan daidaitawar ISCM da yawa. A yayin faɗuwar ISCM na farko, wariyar ajiya tana ɗauka ba tare da katse bayanan tsari ba.
Yana goyan bayan sakewar samar da wutar lantarki, musamman a aikace-aikacen Zone 2, inda wutar lantarki ta uku zata iya ba da ajiyar waje don hana raguwar tsarin.
3. Gane Laifin Layi & Ƙararrawa
Yawancin nau'ikan P+FI/O sun ƙunshi Gano Laifin Layin (LFD), mai iya ganowa:
Analog halin yanzu ƙasa 0.5mA ko sama da 22mA
Buɗe madauki na analog
Buɗe ko gajeriyar shigarwar dijital
Thermocouple mai ƙonewa, da sauransu.
A ja LED a kan module gaban panel fitilu sama a kan gano kuskure, da kuma tsarin da aka faɗakar da ta hanyar I/O BAD bit, tare da bayyanannun alamomi a kan duka block faceplates da tsarin management musaya.
4. Haɗin Na'urar HART
Yana goyan bayan sadarwa tare da na'urori masu wayo ta hanyar HART I/O modules, yana ba da damar karanta bayanai masu yawa (misali, PV, SV, TV), matsayin na'urar, da bayanan sanyi.
Yana goyan bayan na'urorin HART har zuwa 80, haɗin haɗin HART I/O 480, da kuma lokutan wucewa 12 HART.
Ka'idodin Aiki na Tsarin
1. Sadarwa Gine-gine
ISCM tana sadarwa tare da masu sarrafa I/A Series (FCP270 ko ZCP270) ta hanyar bas ɗin filin 2 Mbps HDLC. Wannan motar bas tana goyan bayan manyan hanyoyi don tabbatar da amincin sadarwa. Don ZCP270, ana sarrafa sadarwa ta hanyar FCM100E/Et modules, waɗanda ke canza ƙa'idar don watsawa akan hanyar sadarwar fiber-optic na Ethernet.
2. Taswirar Bayanai & Kwaikwayo
Bayan farawa, ISCM ta atomatik tana bincika abubuwan haɗin P+FI/O da aka haɗa ta atomatik kuma tana gina tsarin bayanan FBM daidai da teburan wasiƙa a cikin ƙwaƙwalwar ajiya. Wannan tsarin kwaikwayo yana ba da damar:
Tsarin don amfani da daidaitattun I/A Series tubalan sarrafawa (misali, AIN, AOUT, CIN, COUT) don daidaitawa.
Haɓakawa ta kayan aikin hoto kamar InFusion Engineering Environment (IEE) ko I/A Series ICC.
3. Wasiƙar Maganar Magana
Ana gano kowane nau'in ISCM da I/O ta hanyar bug ɗin haruffa 6 na musamman:
Haruffa 3 na farko an ayyana masu amfani yayin ma'anar tsarin.
An saita hali na 4 ta hanyar jujjuyawar juyi akan ISCM (0-9 ko A–F), yana bambanta ISCM daban-daban.
Haruffa na 5-6th suna wakiltar lambar ramin module (01-48); Na'urori masu nisa biyu suna amfani da lambar ramin hagu.
4. Tsarin Aiki tare na Redundancy
Yawancin ISCMs suna aiki tare da bayanan bayanan su ta hanyar bas ɗin sadarwa akan rukunin tushe. Idan ISCM na farko ya gaza, wariyar ajiya na iya ɗauka a cikin millise seconds kuma ta ci gaba da sadarwa tare da kayan aikin I/O. Lura cewa bayanan dijital daga na'urorin HART na iya fuskantar ɗan taƙaitaccen katsewa yayin da aka sake kafa sadarwa.
5. Kulawa da Samar da Wutar Lantarki & Ƙararrawa
ISCM tana sa ido kan matsayin duk kayan wutar lantarki da aka haɗa (har zuwa salon LB-6 ko 4 FB-style) kuma yana ba da rahoton abubuwan da ba su dace ba ta jihohin bit a cikin Matsayin Diag 1 byte. Masu amfani za su iya kashe saka idanu don takamaiman kayan wuta ta amfani da sigar SYSOPT.
6. Kanfigareshan da Block Processing
Kowane ISCM an saita shi tare da ECB200 (modulu ɗaya) ko ECB202 (masu biyu).
An saita kowane tsarin I/O tare da daidaitaccen ECB (misali, ECB1 don shigarwar analog, ECB53 don fitowar analog).
Tubalan sarrafawa (misali, PID, AIN, AOUT) suna amfani da ma'aunin PNT_NO don nunawa takamaiman tashoshi I/O.
7. Tsaro da Takaddun shaida
Duk nau'ikan P+FI/O ATEX/IECEx an ba su bokan don amfani a wurare masu haɗari.
Tsarin yana goyan bayan Safety Integrity Level (SIL) 2; wasu kayayyaki sun haɗa da bayanan rufewa masu zaman kansu don Ayyukan Instrumented Safety Instrumented (SIF).
Yanayin Aikace-aikacen Na Musamman
Oil & Gas: Ikon Wellhead, kwampreso saka idanu, tanki gona auna
