Ahlukaniswa Kanjani Ama-PLC? Ayini Amamethrikhi Okusebenza Abalulekile?
Ahlukaniswa Kanjani Ama-PLC? Ayini Amamethrikhi Okusebenza Abalulekile?
Ama-PLC angahlukaniswa ngezindlela ezilandelayo:
Ngokubunjwa Kwesakhiwo:
I-Integral PLC (noma i-Unitary PLC): Zonke izingxenye, okuhlanganisa ukunikezwa kwamandla kagesi, i-CPU, ne-I/O interfaces, zihlanganiswe zibe yindlu eyodwa.
I-Modular PLC (noma i-Assembled PLC): Izingxenye ezifana nemojula yokuphakela amandla, imojula ye-CPU, kanye nemojuli ye-I/O zakhiwe ngokuzimela. Lezi zingahlanganiswa ku-rack engashintshi noma ithrekhi ngokusekelwe ezidingweni ezithile zohlelo lokusebenza ukwenza uhlelo oluphelele lwe-PLC.
Ngekhono Lephoyinti le-I/O:
Ama-PLC Ahlangene: Ngokuvamile anamaphoyinti e-I/O angaphansi kuka-256, njenge-Siemens S7-200SMART PLC.
Ama-PLCs anosayizi omaphakathi: Sebenzisa izakhiwo ze-modular futhi ngokuvamile unamaphuzu e-I/O asuka ku-256 kuya ku-1024, njenge-Siemens S7-300 PLC.
Ama-PLC Amakhulu: Ngokuvamile anamaphoyinti e-I/O angaphezu kuka-1024, njenge-Siemens S7-400 PLC.
Amamethrikhi okusebenza angukhiye we-PLCs:
Nakuba ama-PLC avela kubakhiqizi abahlukene angase ahluke kuzici, abelana ngamamethrikhi okusebenza ambalwa avamile:
Okokufaka/Okuphumayo (I/O) Amaphuzu: Amaphoyinti e-I/O amele inani lezimbobo zokufaka zangaphandle neziphumayo ezixhunywe kuphaneli ye-PLC. Uma kukhona amaphuzu e-I/O engeziwe, amandla okulawula engeziwe i-PLC enawo. Lokhu kungenye yezinto ezibaluleke kakhulu lapho ukhetha i-PLC.
Isivinini sokuskena: Le metric ibonisa ukuthi i-PLC yenza uhlelo lwayo ngokushesha kangakanani. Ngokuvamile kukalwa ngama-millisecond adingekayo ukuze kusetshenziswe imiyalelo engu-1K.
Amandla Esitoreji: Umthamo wesitoreji uvame ukuvezwa ngokwamagama e-kilowords (KW), kilobytes (KB), noma amakhilobhithi (Kbit), lapho 1K = 1024. Amanye ama-PLC anikeza isitoreji esinwebekayo.
Isethi Yemiyalo: Isethi yeziqondiso ibonisa amandla okusebenza kwesofthiwe ye-PLC. Isethi yemiyalelo ecebile isho amandla okuhlela aqinile.
Amarejista Angaphakathi (Ama-Relay): Ama-PLC aqukethe amarejista amaningi okugcina okuguquguqukayo, imiphumela emaphakathi, kanye nedatha. Ukumiswa kwalawa marejista nakho kuyinkomba yokusebenza kwe-PLC.
Amandla Wokunweba: Lokhu kubonisa indlela i-PLC engakwazi ngayo ukuhlanganisa amamojula engeziwe emisebenzi ekhethekile, njenge-A/D, D/A, ukubala ngesivinini esiphezulu, noma amamojula okuxhumana akude.
Ukuqhathaniswa Phakathi kwama-PLC kanye Nezinhlelo Zokulawula Ukudlulisa:
Ngaphambi kokufika kwama-PLCs, amasekhethi e-relay hardwired ayeyindlela eyinhloko yokulawula okunengqondo nokulandelanayo. Ayelula futhi eyonga kodwa engenakho ukuguquguquka. Selokhu kwethulwa ama-PLC, cishe zonke izici zokusebenza kwawo sezidlule ezase-relay control systems.
Amathrendi okuthuthukisa ama-PLC:
Iqhubekela ekusebenzeni okuphezulu, ukucubungula okusheshayo, namandla amakhulu.
Ukuthuthukisa amakhono enethiwekhi nawokuxhumana.
Kuba kuncane, ukonga kakhudlwana, futhi kulula ukukusebenzisa.
Ukuthuthukisa ngokuqhubekayo ukusebenza kwesofthiwe yokuhlela.
Ukuthuthukisa amamojula amasha enzelwe izinhlelo zokusebenza ze-PLC.
Ukuthuthukisa i-miniaturization kanye ne-software-based evolution yama-PLC.