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更新時間：2024-06-12

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西門子6SE70逆變器報(F114-A016-A017-）修復解決專家，西門子變頻器維修，

上海恒稅電氣有限公司(si)，你(ni)的(de)選擇沒有錯。公司(si)自成(cheng)立(li)以來，長期銷售(shou)維(wei)修(xiu)西門子變頻器(qi)及伺(si)服(fu)驅動器(qi)的(de)，觸(chu)摸屏(ping)，PLC，直流調速(su)器(qi)等，積累(lei)了豐富的(de)維(wei)修(xiu)經驗，對所維(wei)修(xiu)的(de)機(ji)器(qi)建立(li)完善的(de)維(wei)修(xiu)檔案(an)，所有我們(men)維(wei)修(xiu)的(de)機(ji)器(qi)我們(men)都有完善的(de)參數(shu)備份，確保我們(men)維(wei)修(xiu)的(de)機(ji)器(qi)上機(ji)即能使(shi)用。

故(gu)障(zhang)檢修案(an)例，前(qian)幾天收到一臺5.5kw的變頻器(qi)通電(dian)(dian)開(kai)機無(wu)顯(xian)示故(gu)障(zhang)。先用儀器(qi)測量變頻器(qi)故(gu)障(zhang)問(wen)題(ti)，發(fa)現(xian)根本沒有電(dian)(dian)壓輸出,初步診(zhen)斷懷疑是電(dian)(dian)源部分(fen)有故(gu)障(zhang)存在或cpu基板(ban)電(dian)(dian)源對地短路問(wen)題(ti)。拆開(kai)機殼(ke)重新通電(dian)(dian)測量cpu基板(ban)無(wu)短路問(wen)題(ti),這(zhe)樣基本確定是電(dian)(dian)源部分(fen)出現(xian)故(gu)障(zhang)。

西門子6SE70逆變器報(F114-A016-A017-）修復解決專家，西門子變頻器維修，

維(wei)修變頻器(qi)(qi)檢查(cha)電(dian)源(yuan)部分時(shi)發(fa)(fa)(fa)(fa)現(xian)(xian)有(you)“吱吱"的響聲(sheng)出現(xian)(xian),仔細(xi)辨認(ren)后發(fa)(fa)(fa)(fa)現(xian)(xian)是在(zai)開(kai)(kai)關電(dian)源(yuan)部分里(li)變壓器(qi)(qi)所發(fa)(fa)(fa)(fa)出這種聲(sheng)音,由此判斷(duan)可能(neng)是開(kai)(kai)關電(dian)源(yuan)啟(qi)動電(dian)壓閥值(zhi)(zhi)低(di)所造成。用萬用表測量(liang)時(shi)發(fa)(fa)(fa)(fa)現(xian)(xian)只有(you)14v左右的電(dian)壓而且還(huan)在(zai)不(bu)斷(duan)下降(jiang),檢查(cha)電(dian)源(yuan)啟(qi)動ic時(shi)發(fa)(fa)(fa)(fa)現(xian)(xian)基準電(dian)壓已經低(di)于(yu)16v的低(di)要求(qiu)值(zhi)(zhi),屬(shu)于(yu)那(nei)種欠壓鎖定閥值(zhi)(zhi)低(di)現(xian)(xian)象導致(zhi)開(kai)(kai)關電(dian)源(yuan)無法激活整機不(bu)能(neng)正常工(gong)作(zuo)的情況。測量(liang)限(xian)流電(dian)阻時(shi)沒有(you)發(fa)(fa)(fa)(fa)現(xian)(xian)開(kai)(kai)路或變值(zhi)(zhi),開(kai)(kai)關管也沒有(you)壞的跡象,更換電(dian)源(yuan)啟(qi)動ic后故障仍然存(cun)在(zai)沒有(you)任何(he)變化。

經(jing)過(guo)周思考慮(lv)后(hou)畫(hua)下該(gai)電(dian)(dian)(dian)(dian)路的開(kai)關電(dian)(dian)(dian)(dian)源部分(fen),通過(guo)電(dian)(dian)(dian)(dian)路分(fen)析(xi)時發現原(yuan)來在限流(liu)電(dian)(dian)(dian)(dian)阻后(hou)供給啟(qi)動ic電(dian)(dian)(dian)(dian)壓有(you)一個15uf/25v電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong),它的作用主要是激活開(kai)關電(dian)(dian)(dian)(dian)源啟(qi)動并使它正常(chang)(chang)工(gong)作,因此懷疑是這(zhe)個電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)變(bian)值所(suo)引起導致故障(zhang)異(yi)常(chang)(chang)。更換一個同型號的電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)后(hou)故障(zhang)仍然沒有(you)解(jie)(jie)決(jue),再(zai)換一個比(bi)原(yuan)來容(rong)(rong)量耐壓大(da)一點的電(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)容(rong)(rong)22uf/50v,果(guo)然問(wen)(wen)題便解(jie)(jie)決(jue)了(le),有(you)電(dian)(dian)(dian)(dian)壓輸出(chu)了(le),顯示(shi)器也有(you)顯示(shi)了(le)。變(bian)頻器帶上(shang)負載運(yun)行一段時間確定沒問(wen)(wen)題之后(hou)，寄送回給客戶。

變(bian)頻器面板(ban)LCD沒有任何(he)顯示故障檢修實例

故障現象：一(yi)臺變頻(pin)器面板LCD沒有任何顯(xian)示。

故(gu)障分析與處理：

變頻(pin)器(qi)面板無任何顯示，且變頻(pin)器(qi)控(kong)制電(dian)(dian)(dian)路(lu)上(shang)都沒(mei)有(you)電(dian)(dian)(dian)壓，屬于(yu)開關電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)不正常工作。檢(jian)測開關管K1317漏極上(shang)電(dian)(dian)(dian)壓正常，測得控(kong)制極上(shang)無脈沖信(xin)號，而只有(you)一直流電(dian)(dian)(dian)壓。這說明(ming)UC3844輸出信(xin)號不正常，經(jing)檢(jian)查UC3844已經(jing)損(sun)壞，同時開關管K1317也損(sun)壞。更(geng)換已壞的元(yuan)器(qi)件(jian)后，變頻(pin)器(qi)上(shang)電(dian)(dian)(dian)運行(xing)一切正常。

G／P9系(xi)列出現(xian)此故障(zhang)(zhang)時有可(ke)能(neng)(neng)(neng)是充電(dian)(dian)(dian)電(dian)(dian)(dian)阻或(huo)電(dian)(dian)(dian)源(yuan)(yuan)驅動板的(de)(de)C19電(dian)(dian)(dian)容(rong)損壞(huai)，對(dui)于(yu)大容(rong)量(liang)G／P9系(xi)列的(de)(de)變頻(pin)器(qi)(qi)出現(xian)此故障(zhang)(zhang)時也可(ke)能(neng)(neng)(neng)是內部接觸(chu)器(qi)(qi)不(bu)吸合造成。對(dui)于(yu)G/P11小容(rong)量(liang)變頻(pin)器(qi)(qi)除電(dian)(dian)(dian)源(yuan)(yuan)板有問(wen)題(ti)外(wai)，IPM模塊上的(de)(de)小電(dian)(dian)(dian)路板也可(ke)能(neng)(neng)(neng)出了問(wen)題(ti)。30G11以上容(rong)量(liang)的(de)(de)變頻(pin)器(qi)(qi)，可(ke)能(neng)(neng)(neng)是電(dian)(dian)(dian)源(yuan)(yuan)板為(wei)主板提(ti)供電(dian)(dian)(dian)源(yuan)(yuan)的(de)(de)保險(xian)管FUS1損壞(huai)，造成上電(dian)(dian)(dian)無顯示(shi)的(de)(de)故障(zhang)(zhang)，當主板出現(xian)問(wen)題(ti)后也會(hui)造成上電(dian)(dian)(dian)無顯示(shi)故障(zhang)(zhang)。