Kodi PLCs Amagawidwa Motani? Kodi Ma Metrics Ofunika Kwambiri Ndi Chiyani?
Kodi PLCs Amagawidwa Motani? Kodi Ma Metrics Ofunika Kwambiri Ndi Chiyani?
Ma PLC akhoza kugawidwa m'njira zotsatirazi:
Mwa Kupanga Kwamapangidwe:
Integral PLC (kapena Unitary PLC): Zigawo zonse, kuphatikizapo magetsi, CPU, ndi I / O interfaces, zimaphatikizidwa mu nyumba imodzi.
Modular PLC (kapena Assembled PLC): Zigawo monga gawo lamagetsi, gawo la CPU, ndi gawo la I/O zimapangidwira paokha. Izi zitha kuphatikizidwa pachoyikapo chokhazikika kapena njanji kutengera zomwe mukufuna kuti mupange dongosolo lathunthu la PLC.
Ndi I/O Point Kutha:
Compact PLCs: Nthawi zambiri amakhala ndi mfundo zosakwana 256 I/O, monga Nokia S7-200SMART PLC.
Ma PLC Apakati: Gwiritsani ntchito zomangira ndipo nthawi zambiri mumakhala ndi mfundo za I/O kuyambira 256 mpaka 1024, monga Nokia S7-300 PLC.
Ma PLC Aakulu: Nthawi zambiri amakhala ndi mfundo zopitilira 1024 I/O, monga Nokia S7-400 PLC.
Ma Metrics Ofunikira a PLCs:
Ngakhale ma PLC ochokera kwa opanga osiyanasiyana amatha kusiyanasiyana, amagawana njira zingapo zofananira:
Zolowetsa/Zotulutsa (I/O) Mfundo: Mfundo za I/O zikuyimira kuchuluka kwa madoko akunja ndi zotuluka zolumikizidwa ndi gulu la PLC. Pomwe pali mfundo za I/O, mphamvu zowongolera zomwe PLC ili nazo. Ichi ndi chimodzi mwazinthu zofunika kwambiri posankha PLC.
Kuthamanga Kwambiri: Metric iyi ikuwonetsa momwe PLC imachitira pulogalamu yake mwachangu. Nthawi zambiri amayezedwa mu ma milliseconds ofunikira kuti apereke malangizo a 1K.
Mphamvu Zosungira: Mphamvu yosungira nthawi zambiri imawonetsedwa potengera ma kilowords (KW), kilobytes (KB), kapena ma kilobits (Kbit), pomwe 1K = 1024. Ma PLC ena amapereka zosungirako zokulitsa.
Seti Yamalangizo: Seti ya malangizo imawonetsa mphamvu zamapulogalamu a PLC. Kuchuluka kwa malangizo kumatanthawuza mphamvu zamapulogalamu.
Ma Registry Amkati (Relays): Ma PLC ali ndi zolembera zambiri zosungirako zosinthika, zotsatira zapakatikati, ndi data. Kukonzekera kwa zolemberazi ndi chizindikiro cha magwiridwe antchito a PLC.
Kukulitsa Mphamvu: Izi zikuwonetsa momwe PLC ingagwirizanitse ma modules owonjezera pa ntchito zapadera, monga A / D, D / A, kuwerengera kothamanga kwambiri, kapena ma modules olankhulana akutali.
Kuyerekeza Pakati pa PLCs ndi Relay Control Systems:
Asanabwere ma PLC, mabwalo olumikizana ndi ma waya anali njira zazikulu zowongolera momveka bwino komanso motsatizana. Zinali zosavuta komanso zotsika mtengo koma zinalibe kusinthasintha. Chiyambireni kukhazikitsidwa kwa ma PLC, pafupifupi gawo lililonse la machitidwe awo laposa machitidwe owongolera ma relay.
Kukula kwa Ma PLC:
Kusunthira ku magwiridwe antchito apamwamba, kukonza mwachangu, komanso kuthekera kwakukulu.
Kupititsa patsogolo luso la maukonde ndi kulumikizana.
Kukhala yaying'ono, yotsika mtengo, komanso yosavuta kugwiritsa ntchito.
Kupititsa patsogolo ntchito zamapulogalamu.
Kupanga ma module atsopano ogwirizana ndi mapulogalamu a PLC.
Kupititsa patsogolo kusinthika kwapang'onopang'ono ndi kusinthika kwa mapulogalamu a PLC.