Ubhidekile malunga nomthombo kunye neentlobo ze-sink kwii-PLCs? Nantsi ingcaciso eyenziwe lula:
Ubhidekile malunga nomthombo kunye neentlobo ze-sink kwii-PLCs? Nantsi ingcaciso eyenziwe lula:
Umthombo vs ISinki: Kwiisekethe ze-transistor, umthombo (PNP) uthetha i-IO yesekethe ebonelela ngoku, ngelixa i-sink (NPN) ithetha ukuba ifunxa yangoku.
YENZA (Isiphumo seDijithali):
Iziphumo ze-PNP (umthombo) ziqhelekileyo kwi-Siemens 300/400 series kunye ne-European PLCs. Banomthombo wamandla wangaphakathi, ke ngoku uqukuqela uphuma nge-DO, uvumela ukuqhubela phambili ngokuthe ngqo ngaphandle kwamandla angaphandle.
Iziphumo ze-NPN (i-sink) ziqhelekileyo kwi-Japanese, i-Taiwanese, i-Siemens 200 series, kunye nee-PLC ezininzi zasekhaya. Bafuna i-wiring yangaphandle kumthombo wamandla we-24V, kunye nokuhamba kwangoku ukusuka kwizixhobo zangaphandle ukuya kwimodyuli yokuphuma.
DI (Igalelo leDijithali):
Umahluko uxhomekeke kwindlela yokuhamba yangoku ngokunxulumene ne-DI terminal.
Ngokubanzi, ukuba i-DI's COM iqhagamshelwe kwi-24V kwaye igalelo liyasebenza kwi-0V, ngoku iyaphuma (umthombo). Ukuba i-COM ixhunyiwe kwi-0V kwaye igalelo livumelekile kwi-24V, i-current flows in (i-sink).
Inqaku elikhethekileyo kwii-PLC zaseJapan: Ezinye (ezifana neMitsubishi) zichaza i-DI ngokusekelwe kwiindidi zemveliso ezamkelekileyo. I-DI enokwamkela umthombo we-DO ibizwa ngokuba yi-"source input"; enye enokwamkela isinki DO yi "sink input".
Ukudibanisa kwe-DIDO: Umthombo we-DI unokuqhagamshela kwi-skin DO, kwaye ngokuphambene. Udibaniso olufanayo lwe-DI/DO lunokufuna izixhasi zokutsalela phezulu okanye amanye amanyathelo okuthintela ukubuya umva polarity.
Siemens PLCs:
I-Sink Logic: Umqondiso IVULIWE xa ngoku uqukuqela uphuma kwi-terminal yongeniso.
Umthombo wengqiqo: Umqondiso IVULIWE xa ngoku uqukuqela ukuya kwi-terminal yongeniso.
Ngonikezelo lwamandla olulungileyo, i-voltage ephantsi (0V) kwi-terminal yokufaka ngexesha "ON" isignali ibonisa i-sink logic; amandla ombane aphezulu (ngokuqhelekileyo i-24V) ibonisa ingqiqo yomthombo.
Amagalelo omthombo akwinqanaba eliphezulu elisebenzayo (ukungena ngoku ngoku), ngelixa i-sink inputs ikwinqanaba elisezantsi elisebenzayo (i-current flows out).
Mitsubishi FX3U:
Umthombo: Ukuphuma kwangoku, kunye neempawu zemveliso ye-PNP transistor.
I-Sink: Ukuhamba ngoku ngoku, kunye neempawu ze-NPN transistor zemveliso.
Ezikhethwayo zeNgingqi:
I-S7-200 PLCs inokusingatha zombini iintlobo ze-sink kunye nemithombo, ngelixa ii-S7-300 PLCs zingumthombo. IYurophu yaseYurophu ihlala isebenzisa iintlobo zemithombo kunye nokutshintsha kwe-PNP kwigalelo eliphezulu. I-Japan ne-South Korea zikhetha iintlobo ze-sink, zisebenzisa ii-NPN zokutshintsha amagalelo asezantsi.
Iziphumo zomthombo zizibonda ze-DC ezilungileyo, iziphumo ze-sink zibi. I-Siemens PLCs ihlala inazo zombini, kodwa umthombo uxhaphake kakhulu. I-Mitsubishi PLCs ixhasa amagalelo omabini, kodwa i-sink ixhaphake kakhulu, ihambelana nokutshintsha kohlobo lweNPN.