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光電耦合器

PLC應用系統中輸入、輸出接口電路中的光電耦合器件的作用是什么？

發布日期：2022-10-09 點擊率：199

    PLC應用系統中輸入、輸出接口電路中的光電耦合器件的作用是：

    1、實現現場與PLC主機的電氣隔離、提高抗干擾性；

    2、避免外電路出故障時，外部強電侵入主機而損壞主機；

    3、電平交換，現場開關信號可能有各種電平，光電耦合器將它們變換成PLC主機要求的標準邏輯電平。

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