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廈門泰尼電氣有限公司
主營產品: AB模塊PLC |

![]() |
廈門泰尼電氣有限公司
主營產品: AB模塊PLC |
參考價 | 面議 |
140XTS00203***140XTS00203
140XTS00203***140XTS00203
三菱PLC輸入指示燈安裝于各自的輸入模塊上,用于指示PLC輸入信號的狀態,當設備的輸入發信時,對應的指示燈亮。當輸入發信時,(對應PLC輸入端有信號輸入),如指示燈不亮,可能原因有:
采用匯點輸入(有源)時,因信號的接觸電阻太大或負載過重、短路引起PLC內部電源電壓的降低、保護,使得輸入電流不足以驅動PLC輸入接口電路;
:張亮(工程師) 專線:
24小時移動專線: 【】
采用源輸入(有源)時,因信號的接觸電阻太大或輸入信號的電壓過低,使得輸入電流不足以驅動PLC的輸入接口電路;
輸入端子的接觸不良或輸入連接線連接不良;
當故障發生在擴展單元時,可能是基本單元與擴展單元間的連接不良;
PLC輸入接口電路損壞。
測量PLC輸入電壓、檢查模塊安裝與連接,在確認正確后,更換輸入模塊或進行輸入模塊的維修與處理。
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