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coco243

convertor 24VDC -> RS422

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Cine imi spune si mie unde gasesc in Romania un convertor 24VDC -> RS422?Multumesc.

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Cred ca ati formulat gresit... rs422 e un standard de transmisie seriala, 24VDC e alimentarea modulului... mai bine povestiti exact ce vreti sa faceti si poate va ajuta cineva...

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Exact ce am spus imi trebuie.Vreau un convertor care sa-mi transforme un impuls de 24VDC intr-un semnal RS422.Uite asa:post-14820-139829744318_thumb.jpg

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Mersi de raspuns, dar scrie ca scoate semnal diferential de linie digital, dar nu spune ce nivel de tensiune are pe fiecare canal si nici nu are o foaie de catalog ceva. De unde imi dau seama?

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Pai releele alea de securitate folosesc optocuploare care lucreaza la curenti foarte mici, acesti curenti nu provoaca scantei periculoase in mediu cu gaze, ideea este ca separi cu relee de genul acesta o zona cu mediu periculos care presupune gaze inflamabile in atmosfera, am folosit ceva de genul asta pentru niste contacti la vane de gaz in zona de arzatoare la un cuptor. In alte conditii poate ai nevoie de separare galvanica deoarece este distanta mare pe cablu si ai nevoie sa regenerezi semnalul, sau ai schema de functionare de asa natura ca ai o zona anume alimentata din sursa separata de tensiune de 24 Vcc si transferi semnalul catre PLC, in acest caz evident se pot folosi relee clasice de 24 V.

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