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廈門市泰尼電器有限公司
主營產品： AB模塊PLC |
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廈門市泰尼電器有限公司
主營產品： AB模塊PLC |
| 參考價 | 面議 |
【IC697VAL348】【IC697VAL348】
【】【】
輸出接口電路通常有三種類型：繼電器輸出型、晶體管輸出型和晶閘管輸出則。每種輸出電路都采用電氣隔離技術，電源由外部提供，輸出電流一般為1.5—2A，輸出電流的額定值與負載的性質有關。
為使PLC避免受瞬間大電流的作用而損壞，輸出端外部接線必須采用保護措施：一是輸出公共端接熔斷器；二是采用保護電路，對交流感件負載，一般用阻容吸收回路；對直流感性負載用續流二極管。
*部分的PLC的輸出端子采用分組式和分隔式。對于晶體管輸出型還有源型輸出和漏型輸出兩種形式。*部分的歐美品牌的PLC采用源型輸出，而*部分的亞洲品牌的PLC采用漏型輸出。圖4所示為采用分組式的PLC繼電器輸出電路圖，圖5和圖6所示分別為采用分組式的PLC源型和漏型晶體管直流輸出電路圖。
：張亮（工程師） 專線：
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