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廈門市泰尼電器有限公司
主營(yíng)產(chǎn)品： AB模塊PLC |
會(huì)員1.png)
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廈門市泰尼電器有限公司
主營(yíng)產(chǎn)品： AB模塊PLC |
| 參考價(jià) | 面議 |
聯(lián)系方式：張工查看聯(lián)系方式
更新時(shí)間：2018-05-08 21:55:56瀏覽次數(shù)：299
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1786-BNCP==1786-BNCP
==
1.2 實(shí)例
(1) 一臺(tái)LG-IS3-4 3.7kW變頻器一啟動(dòng)就跳“OC"
分析與維修:打開(kāi)機(jī)蓋沒(méi)有發(fā)現(xiàn)任何燒壞的跡象，在線測(cè)量IGBT(7MBR25NF-120)基本判斷沒(méi)有問(wèn)題，為進(jìn)一步判斷問(wèn)題，把IGBT拆下后測(cè)量7個(gè)單元的大功率晶體管開(kāi)通與關(guān)閉都很好。在測(cè)量上半橋的驅(qū)動(dòng)電路時(shí)發(fā)現(xiàn)有一路與其他兩路有明顯區(qū)別，經(jīng)仔細(xì)檢查發(fā)現(xiàn)一只光耦A(yù)3120輸出腳與電源負(fù)極短路，更換后三路基本一樣。模塊裝上上電運(yùn)行一切良好。
(2) 一臺(tái)BELTRO-VERT 2.2kW變頻通電就跳“OC"且不能復(fù)位。
分析與維修:首先檢查逆變模塊沒(méi)有發(fā)現(xiàn)問(wèn)題。其次檢查驅(qū)動(dòng)電路也沒(méi)有異?，F(xiàn)象，估計(jì)問(wèn)題不在這一塊，可能出在過(guò)流信號(hào)處理這一部位，將其電路傳感器拆掉后上電，顯示一切正常，故認(rèn)為傳感器已壞，找一新品換上后帶負(fù)載實(shí)驗(yàn)一切正常。公司 名稱：廈門泰尼電氣有限公司
固定 ：
聯(lián) 系 人：張亮
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商 務(wù) ： 2314094943
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郵 箱：2314094943
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公司地址：廈門市海滄區(qū)海滄街道濱湖一里7號(hào)2008室
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