Ingabe udidekile mayelana nezinhlobo zomthombo nezosinki kuma-PLC? Nansi incazelo eyenziwe lula:

2025-09-29

Ingabe udidekile mayelana nezinhlobo zomthombo nezosinki kuma-PLC? Nansi incazelo eyenziwe lula:

Umthombo vs Usinki: Kumasekhethi e-transistor, umthombo (PNP) usho ukuthi isekethe ye-IO enikezela ngamanje, kanti usinki (NPN) usho ukuthi udonsa wamanje.

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YENZA (Okukhiphayo Kwedijithali):

Imiphumela ye-PNP (umthombo) ivamile ochungechungeni lwe-Siemens 300/400 kanye nama-PLC ase-Europe. Zinomthombo wamandla wangaphakathi, ngakho-ke amanje ageleza aphume nge-DO, okuvumela ukushayela okudluliswayo okuqondile ngaphandle kwamandla angaphandle.

Imiphumela ye-NPN (sinki) ijwayelekile ngochungechunge lwesi-Japanese, isi-Taiwanese, i-Siemens 200, kanye nama-PLC amaningi asekhaya. Zidinga izintambo zangaphandle kumthombo wamandla we-24V, ogeleza okwamanje kusuka kumadivayisi angaphandle ukuya kumojula yokuphumayo.

I-DI (Okokufaka Kwedijithali):

Umehluko uncike ekuqondeni kokugeleza kwamanje okuhlobene netheminali ye-DI.

Ngokuvamile, uma i-DI's COM ixhunywe ku-24V futhi okokufaka kusebenza ku-0V, okwamanje kuyaphuma (umthombo). Uma i-COM ixhumeke ku-0V futhi okokufaka kusebenza ku-24V, ukungena kwamanje ku-(usinki).

Inothi Elikhethekile kuma-PLC aseJapane: Abanye (njenge-Mitsubishi) bachaza i-DI ngokusekelwe ezinhlotsheni zokukhiphayo ezamukelekayo. I-DI engamukela i-DO yomthombo ibizwa ngokuthi "ukufakwa komthombo"; eyodwa engamukela usinki DO "i-sink input".

Ukumatanisa kwe-DIDO: Umthombo we-DI ungaxhuma ekucwiliseni i-DO, futhi ngokuphambene nalokho. Ukuxhumeka kohlobo olufanayo lwe-DI/DO kungase kudinge izinto eziphikisayo zokudonsa phezulu noma ezinye izinyathelo zokuvimbela ukuhlehla kwe-polarity.

I-Siemens PLCs:

I-Sink Logic: Isiginali VULIWE uma imanje ligeleza liphuma kutheminali yokokufaka.

Umqondo Womthombo: Isiginali IVULIWE lapho okwamanje kugeleza kutheminali yokokufaka.

Ngokunikezwa kwamandla okuhle, i-voltage ephansi (0V) kutheminali yokufaka phakathi nesignali ethi "ON" ibonisa ingqondo ka-sink; amandla kagesi aphezulu (imvamisa engu-24V) akhombisa ukuqonda komthombo.

Okokufaka komthombo kuvumelekile kwezinga eliphezulu (ukugeleza kwamanje), kuyilapho okokufaka kukasinki kuvumelekile ngezinga eliphansi (ukuphuma kwamanje).

I-Mitsubishi FX3U:

Umthombo: Yamanje iyaphuma, enezici zokuphuma kwe-PNP transistor.

Usinki: Ukugeleza kwamanje, kunezici zokuphuma kwe-NPN transistor.

Okuthandwayo Kwesifunda:

Ama-S7-200 PLC angakwazi ukuphatha zombili izinhlobo zikasinki nemithombo, kuyilapho ama-S7-300 PLCs ewumthombo ngokujwayelekile. I-Western Europe ivamise ukusebenzisa izinhlobo zomthombo ezinamaswishi e-PNP kokufakwayo kwezinga eliphezulu. I-Japan ne-South Korea zikhetha izinhlobo zikasinki, zisebenzisa amaswishi e-NPN okokufaka kwezinga eliphansi.

Imiphumela yomthombo izigxobo ezinhle ze-DC, ukuphuma kukasinki kubi. Ama-Siemens PLC avame ukuba nakho kokubili, kodwa umthombo uvame kakhulu. Ama-Mitsubishi PLC asekela kokubili okokufaka, kodwa usinki uvame kakhulu, ohambisana nokushintsha kokusondela kohlobo lwe-NPN.