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廈門泰尼電氣有限公司
主營產(chǎn)品： AB模塊PLC |
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廈門泰尼電氣有限公司
主營產(chǎn)品： AB模塊PLC |
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聯(lián)系方式：張亮查看聯(lián)系方式
更新時(shí)間：2018-03-27 01:01:11瀏覽次數(shù)：242
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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(hào)的狀態(tài)，當(dāng)設(shè)備的輸入發(fā)信時(shí)，對(duì)應(yīng)的指示燈亮。當(dāng)輸入發(fā)信時(shí)，（對(duì)應(yīng)PLC輸入端有信號(hào)輸入），如指示燈不亮，可能原因有：
采用匯點(diǎn)輸入（有源）時(shí)，因信號(hào)的接觸電阻太大或負(fù)載過重、短路引起PLC內(nèi)部電源電壓的降低、保護(hù)，使得輸入電流不足以驅(qū)動(dòng)PLC輸入接口電路；
：張亮（工程師） 專線：
24小時(shí)移動(dòng)專線： 【】
采用源輸入（有源）時(shí)，因信號(hào)的接觸電阻太大或輸入信號(hào)的電壓過低，使得輸入電流不足以驅(qū)動(dòng)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(dāng)故障發(fā)生在擴(kuò)展單元時(shí)，可能是基本單元與擴(kuò)展單元間的連接不良；
PLC輸入接口電路損壞。
測(cè)量PLC輸入電壓、檢查模塊安裝與連接，在確認(rèn)正確后，更換輸入模塊或進(jìn)行輸入模塊的維修與處理。
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