廠商性質：經銷商

所在地：上海市

更新時間：2024-06-09

產品簡介：

西門子6SE70變頻器電機提不上速度解決修復；西門(men)子(zi)變頻器維(wei)修(xiu)就找(zhao)上海恒(heng)稅電氣(qi)專(zhuan)(zhuan)注西門(men)子(zi)變頻器的維(wei)修(xiu)專(zhuan)(zhuan)家,10年以上變頻器維(wei)修(xiu)經驗,對于(yu)變頻器出現的大小故障均可(ke)輕松解(jie)決,一般故障當天即(ji)可(ke)修(xiu)好,恒(heng)稅電氣(qi)公司電機配件齊全,還有專(zhuan)(zhuan)門(men)的變頻器檢測(ce)(ce)儀器及測(ce)(ce)試平臺,修(xiu)復好后裝(zhuang)上設(she)備即(ji)可(ke)投入(ru)使用,不(bu)影響企(qi)業生產任(ren)務(wu)。

西門子6SE70變頻器電機提不上速度解決修復；根據線路(lu)中的元器(qi)件數量(liang)及其功耗分析電源到地端的阻值(zhi)不應(ying)如此之小，因此懷疑(yi)線路(lu)中已有(you)元器(qi)件損壞。

通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)檢查，發(fa)(fa)(fa)現一芯片(pian)異(yi)常(chang)發(fa)(fa)(fa)熱。斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)后將該(gai)(gai)(gai)芯片(pian)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源引腳(jiao)切斷，靜態(tai)檢查，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源到(dao)地的(de)(de)(de)阻置增大(da)應屬(shu)正(zheng)常(chang)。測該(gai)(gai)(gai)芯片(pian)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源到(dao)地的(de)(de)(de)阻值(zhi)很小(xiao)。查該(gai)(gai)(gai)芯片(pian)的(de)(de)(de)型號(hao)，為一非標型號(hao)，眾多手(shou)冊(ce)中(zhong)沒有(you)查到(dao)。經線(xian)路分析，確認(ren)(ren)其為該(gai)(gai)(gai)板(ban)中(zhong)的(de)(de)(de)主要(yao)元(yuan)件：環形脈沖分配器。為進(jin)(jin)一步(bu)(bu)確認(ren)(ren)該(gai)(gai)(gai)芯片(pian)的(de)(de)(de)問(wen)題，首(shou)先換(huan)耐壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)功(gong)率相(xiang)當的(de)(de)(de)步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源驅(qu)(qu)動管(guan)(guan)，恢復(fu)該(gai)(gai)(gai)芯片(pian)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源引腳(jiao)，用(yong)發(fa)(fa)(fa)光(guang)二(er)級(ji)管(guan)(guan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路替代步(bu)(bu)進(jin)(jin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機各繞(rao)(rao)組作模擬(ni)負載(zai)(zai)。通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)后，發(fa)(fa)(fa)光(guang)二(er)級(ji)管(guan)(guan)皆(jie)亮，即各繞(rao)(rao)組皆(jie)通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，這是(shi)不(bu)符合(he)(he)線(xian)路要(yao)求的(de)(de)(de)，輸入步(bu)(bu)進(jin)(jin)脈沖無反(fan)應，進(jin)(jin)口泵故障排除：因此確認(ren)(ren)該(gai)(gai)(gai)芯片(pian)已(yi)損壞。但是(shi)該(gai)(gai)(gai)芯片(pian)市場上沒有(you)，在(zai)驅(qu)(qu)動器殼(ke)體內空(kong)間允許(xu)的(de)(de)(de)情況下，采用(yong)了組合(he)(he)線(xian)路即用(yong)手(shou)頭(tou)上已(yi)有(you)的(de)(de)(de)d觸發(fa)(fa)(fa)器和(he)與(yu)非門的(de)(de)(de)組合(he)(he)設(she)計了一個(ge)環形脈沖發(fa)(fa)(fa)生器，制(zhi)(zhi)作在(zai)一個(ge)小(xiao)印(yin)制(zhi)(zhi)板(ban)上，拆(chai)除原(yuan)芯片(pian)將小(xiao)印(yin)制(zhi)(zhi)板(ban)通過引腳(jiao)裝在(zai)原(yuan)芯片(pian)的(de)(de)(de)焊盤上。仍用(yong)發(fa)(fa)(fa)光(guang)二(er)極管(guan)(guan)作模擬(ni)負載(zai)(zai)，通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)后加人步(bu)(bu)進(jin)(jin)脈沖按相(xiang)序依次發(fa)(fa)(fa)光(guang)。拆(chai)除模擬(ni)負載(zai)(zai)，接入主機，通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，設(she)備運(yun)行正(zheng)常(chang)。

本例說明，維修(xiu)人(ren)員不僅要(yao)能分(fen)析現象（過流），找出比較(jiao)明顯的(de)(de)原因（功率管(guan)損壞），還(huan)要(yao)能步步深人(ren)地分(fen)析故(gu)障初因（脈沖發生器損壞），并(bing)且(qie)能運用手頭(tou)上(shang)現有的(de)(de)元器件(jian)(jian)組合替(ti)代難于(yu)解決的(de)(de)器件(jian)(jian)問題。