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更(geng)新時(shi)間：2024-06-11

產品簡介：

空壓機西門子G120變頻器上電面板不亮故障處理；

運行(xing)中的(de)(de)變(bian)(bian)(bian)頻器(qi)(qi)(qi)，停機(ji)后再上電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，仿(fang)佛(fo)接不通電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源似(si)的(de)(de)，毫無(wu)反應(ying)。用(yong)戶送(song)修(xiu)，我們測量變(bian)(bian)(bian)頻器(qi)(qi)(qi)接線端子P1、P（+）兩點間(jian)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值變(bian)(bian)(bian)為無(wu)窮大，充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)R在(zai)不知覺中已(yi)經開路(lu)了。此種故(gu)障并不少見。充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)提供變(bian)(bian)(bian)頻器(qi)(qi)(qi)上電(dian)(dian)(dian)(dian)(dian)(dian)(dian)期(qi)間(jian)對(dui)直(zhi)(zhi)流回(hui)路(lu)儲(chu)能(neng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容（緩）充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)任務(wu)，在(zai)儲(chu)能(neng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容上建立起(qi)一(yi)定(ding)幅值的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓后，充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)接觸器(qi)(qi)(qi)或充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)繼電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)閉(bi)合，變(bian)(bian)(bian)頻器(qi)(qi)(qi)才(cai)能(neng)進入待機(ji)工作狀態(tai)。充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)'執行(xing)任務(wu)'的(de)(de)時(shi)間(jian)雖短(duan)，但(dan)要承受(shou)一(yi)定(ding)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流沖擊，若選用(yong)功(gong)率(lv)(lv)余量不足(zu)或質量欠佳的(de)(de)元(yuan)件，則充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)在(zai)上電(dian)(dian)(dian)(dian)(dian)(dian)(dian)期(qi)間(jian)有可能(neng)隨時(shi)'犧牲'掉。從(cong)1.5kW到(dao)90kW的(de)(de)變(bian)(bian)(bian)頻器(qi)(qi)(qi)，充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)的(de)(de)阻(zu)(zu)值從(cong)51Ω到(dao)幾Ω，功(gong)率(lv)(lv)從(cong)幾瓦(wa)到(dao)幾百(bai)瓦(wa)，多(duo)采用(yong)柱體線繞功(gong)率(lv)(lv)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)和(he)方(fang)形水泥電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)，講究一(yi)點和(he)功(gong)率(lv)(lv)大些的(de)(de)變(bian)(bian)(bian)頻器(qi)(qi)(qi)，則采用(yong)鋁封裝功(gong)率(lv)(lv)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)。中、大功(gong)率(lv)(lv)變(bian)(bian)(bian)頻器(qi)(qi)(qi)的(de)(de)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)損壞(huai)不多(duo)，越是小功(gong)率(lv)(lv)的(de)(de)變(bian)(bian)(bian)頻器(qi)(qi)(qi)，充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)損壞(huai)的(de)(de)故(gu)障率(lv)(lv)越高(gao)。直(zhi)(zhi)流回(hui)路(lu)中串有直(zhi)(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗器(qi)(qi)(qi)的(de)(de)變(bian)(bian)(bian)頻器(qi)(qi)(qi)，如(ru)安川變(bian)(bian)(bian)頻器(qi)(qi)(qi)、東(dong)元(yuan)變(bian)(bian)(bian)頻器(qi)(qi)(qi)等，因(yin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗器(qi)(qi)(qi)對(dui)上電(dian)(dian)(dian)(dian)(dian)(dian)(dian)充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)抵制作用(yong)，充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)往(wang)往(wang)阻(zu)(zu)值較小，如(ru)東(dong)元(yuan)7200PA37kW變(bian)(bian)(bian)頻器(qi)(qi)(qi)，充(chong)(chong)(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)兩只并聯，僅為2Ω240W。

還有一種情況，也易導致充電電阻的損壞。

空壓機西門子G120變頻器上電面板不亮故障處理；

看看LED顯示管驅動芯片電壓是(shi)否正常(chang)。

若正常的(de)話再查該芯片高低電平(ping)信號輸入/輸出是否正常.

一般通過這一步就(jiu)能分(fen)辨(bian)出是驅動還是主控MCU的故障了。

伺(si)服控(kong)制(zhi)器(qi)(qi)(qi)(qi)通(tong)電(dian)(dian)(dian)(dian)(dian)無(wu)顯(xian)示(shi)(shi)的(de)故(gu)(gu)障(zhang)通(tong)常(chang)發生在三個模塊(kuai)上(shang)，一是(shi)接(jie)觸(chu)器(qi)(qi)(qi)(qi)，二是(shi)伺(si)服控(kong)制(zhi)器(qi)(qi)(qi)(qi)的(de)控(kong)制(zhi)面板，三是(shi)給控(kong)制(zhi)面板供電(dian)(dian)(dian)(dian)(dian)的(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)模塊(kuai)，對于伺(si)服控(kong)制(zhi)器(qi)(qi)(qi)(qi)維修時(shi)無(wu)顯(xian)示(shi)(shi)的(de)三種情況應該如何檢(jian)查，如何處(chu)理呢？下面我們以(yi)幾則臺(tai)達變(bian)頻器(qi)(qi)(qi)(qi)無(wu)顯(xian)示(shi)(shi)故(gu)(gu)障(zhang)維修實(shi)例來分(fen)析(xi)(xi)一下例一：一臺(tai)臺(tai)達變(bian)頻器(qi)(qi)(qi)(qi)VFD-F功率為11KW?故(gu)(gu)障(zhang)現象：通(tong)電(dian)(dian)(dian)(dian)(dian)無(wu)顯(xian)示(shi)(shi)故(gu)(gu)障(zhang)??故(gu)(gu)障(zhang)分(fen)析(xi)(xi)：變(bian)頻器(qi)(qi)(qi)(qi)高壓(ya)(ya)直流(liu)(liu)供電(dian)(dian)(dian)(dian)(dian)LED燈亮(liang)，說明高壓(ya)(ya)直流(liu)(liu)供電(dian)(dian)(dian)(dian)(dian)正常(chang)。檢(jian)測低(di)壓(ya)(ya)直流(liu)(liu)供電(dian)(dian)(dian)(dian)(dian)都沒有(you)直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，這正是(shi)開(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)路不工作(zuo)(zuo)(zuo)的(de)現象。開(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)(dian)(dian)路不工作(zuo)(zuo)(zuo)實(shi)際上(shang)就是(shi)開(kai)關(guan)管（K1317）不工作(zuo)(zuo)(zuo)，檢(jian)測直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)沒有(you)送過來。查出(chu)是(shi)連(lian)接(jie)高壓(ya)(ya)直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)端與脈(mo)沖變(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)初級端之間降壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)阻(zu)損壞開(kai)路。?故(gu)(gu)障(zhang)原(yuan)因：降壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)阻(zu)老化損壞開(kai)路，致使(shi)高壓(ya)(ya)直流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)未能加到(dao)脈(mo)沖變(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)的(de)初級繞組上(shang)。開(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)無(wu)法工作(zuo)(zuo)(zuo)，整個變(bian)頻器(qi)(qi)(qi)(qi)無(wu)低(di)壓(ya)(ya)直流(liu)(liu)供電(dian)(dian)(dian)(dian)(dian)，出(chu)現無(wu)顯(xian)示(shi)(shi)故(gu)(gu)障(zhang)。?故(gu)(gu)障(zhang)處(chu)理：更換降壓(ya)(ya)電(dian)(dian)(dian)(dian)(dian)阻(zu)。

西門子G120變(bian)頻器(qi)炸可控硅，跳(tiao)閘，無(wu)(wu)顯示，模塊炸，開不(bu)了(le)機維修，變頻器無(wu)(wu)輸出，無(wu)(wu)電壓，變頻器冒煙(yan)，變頻器異響，變頻器報(bao)(bao)警，通訊不(bu)上，帶不(bu)動負載，電機不(bu)轉，電機抖動,面(mian)板顯示’E’面(mian)板無(wu)(wu)顯示，電壓輸出不(bu)平(ping)衡，運行幾分鐘報(bao)(bao)過(guo)(guo)流.缺相、過(guo)(guo)流、過(guo)(guo)壓、欠壓、過(guo)(guo)熱、過(guo)(guo)載、接地,報(bao)(bao)錯(cuo)維修