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產品簡介:
品牌 | Siemens/西門子 | 產地 | 進口 |
---|---|---|---|
加工定制 | 是 |
半天檢修好西門子直流調速裝置啟動電機飛車;恒稅電氣(qi)解決此故障過十年,技術成熟,配件齊,當天送機當天搞定好,裝(zhuang)機包(bao)好用。
關于西門子直流調速裝置的(de)常見故障以及(ji)維修方法詳解
另一類是(shi)(shi)由于使(shi)用環(huan)境(jing)惡劣(lie),高溫、導電粉塵引(yin)起的(de)(de)短(duan)路、潮(chao)濕引(yin)起的(de)(de)絕緣降低或擊穿等(deng)突發(fa)故(gu)障(嚴重(zhong)時(shi),會出現(xian)打火、爆(bao)炸等(deng)異常現(xian)象)。這類故(gu)障發(fa)生后,一般會使(shi)變頻(pin)器無(wu)任何顯示,其(qi)處(chu)理方法是(shi)(shi)先對變頻(pin)器解(jie)體檢查,重(zhong)點查找損(sun)壞(huai)件,根據故(gu)障發(fa)生區,進行(xing)(xing)(xing)清(qing)理、測量(liang)、更換,然后全(quan)面測試(shi),再恢復系統,空載(zai)試(shi)運(yun)行(xing)(xing)(xing),觀察觸發(fa)回路輸出側的(de)(de)波形,當6組(zu)波形大小(xiao)、相位差(cha)相等(deng)后,再加載(zai)運(yun)行(xing)(xing)(xing),達到解(jie)決(jue)故(gu)障的(de)(de)目(mu)的(de)(de)。
1.維修直流調速裝(zhuang)置(zhi)整流塊損壞
變(bian)頻(pin)(pin)器(qi)整(zheng)流(liu)橋的損壞也(ye)是變(bian)頻(pin)(pin)器(qi)的常(chang)見故障(zhang)之(zhi)一,早(zao)期(qi)生產的變(bian)頻(pin)(pin)器(qi)整(zheng)流(liu)塊均以二極管整(zheng)流(liu)為主(zhu),目前部(bu)分整(zheng)流(liu)塊采(cai)用晶(jing)閘管的整(zheng)流(liu)方式(shi)(調壓調頻(pin)(pin)型變(bian)頻(pin)(pin)器(qi))。
中、大功率普(pu)通變頻(pin)(pin)器整流模塊一般為(wei)三(san)相全波整流,承擔著變頻(pin)(pin)器所(suo)有(you)輸(shu)出(chu)電能的整流,易過(guo)熱,也易擊(ji)穿,其(qi)損壞(huai)后一般會出(chu)現(xian)(xian)變頻(pin)(pin)器不能送電、保(bao)險熔(rong)斷等現(xian)(xian)象,三(san)相輸(shu)入或(huo)輸(shu)出(chu)端呈低(di)阻值(正(zheng)常時其(qi)阻值達到(dao)兆(zhao)歐以上)或(huo)短路(lu)。
在更換整流塊(kuai)時(shi),要求(qiu)其(qi)在與散熱(re)片接(jie)觸面(mian)上(shang)均勻地涂上(shang)一層傳(chuan)熱(re)性能良好的硅導熱(re)膏,再(zai)緊固螺絲(si)。如果沒有同型號整流塊(kuai)時(shi),可用同容量的其(qi)它類型的整流塊(kuai)替代,其(qi)固定螺絲(si)孔(kong),必(bi)須重(zhong)新鉆孔(kong)、攻絲(si),再(zai)安裝、接(jie)線。
2直流調速裝(zhuang)置充電(dian)電(dian)阻易損壞(huai)維修
導致(zhi)變頻器充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)阻損壞(huai)原(yuan)因一般是:如主回路接觸器吸合(he)不(bu)好時(shi)(shi)(shi),造成通(tong)(tong)流(liu)時(shi)(shi)(shi)間過長(chang)而(er)燒(shao)壞(huai);或充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu)太(tai)大而(er)燒(shao)壞(huai)電(dian)(dian)(dian)(dian)(dian)阻;或由于重(zhong)載啟(qi)動(dong)時(shi)(shi)(shi),主回路通(tong)(tong)電(dian)(dian)(dian)(dian)(dian)和RUN信號同時(shi)(shi)(shi)接通(tong)(tong),使充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)阻既要通(tong)(tong)過充(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流(liu),同時(shi)(shi)(shi)又要通(tong)(tong)過負(fu)載逆變電(dian)(dian)(dian)(dian)(dian)流(liu),故易被燒(shao)壞(huai)。
其損壞的(de)特征(zheng),一(yi)般(ban)表現為燒毀、外殼變(bian)黑(hei)、炸裂等(deng)損壞痕跡。也可(ke)根據萬用表測量其電阻(不同容量的(de)機(ji)器,其阻值不同,可(ke)參(can)考(kao)同一(yi)種機(ji)型的(de)阻值大小確定)判斷。
3直流調速裝置(zhi)逆(ni)變器模塊(kuai)燒壞維修
中、小(xiao)型變(bian)(bian)頻器一(yi)般用(yong)三組IGTR(大(da)(da)功率晶體(ti)管模塊(kuai));大(da)(da)容(rong)量的機(ji)種均采(cai)用(yong)多組IGTR并聯,故測(ce)(ce)量檢查時應分別逐一(yi)進行檢測(ce)(ce)。IGTR的損壞也可引起變(bian)(bian)頻器OC(+pA或+pd或+pn)保(bao)護功能動(dong)作(zuo)。
逆(ni)變(bian)(bian)器(qi)模(mo)塊(kuai)的(de)損壞原因很多:如輸出負載發生短(duan)路;負載過大(da),大(da)電(dian)流持續運行;負載波動很大(da),導致(zhi)浪涌電(dian)流過大(da);冷(leng)卻風扇效(xiao)果差(cha);致(zhi)使模(mo)塊(kuai)溫度(du)過高,導致(zhi)模(mo)塊(kuai)燒壞、性能變(bian)(bian)差(cha)、參數變(bian)(bian)化等問題,引起(qi)逆(ni)變(bian)(bian)器(qi)輸出異常。
一。維(wei)修直(zhi)流調速(su)裝(zhuang)置輔助控(kong)制(zhi)電路(lu)常見(jian)故(gu)障
直(zhi)流(liu)調速裝置驅動電路(lu)(lu)、保(bao)護信(xin)(xin)號檢測及處理(li)電路(lu)(lu)、脈沖發生及信(xin)(xin)號處理(li)電路(lu)(lu)等控(kong)制(zhi)電路(lu)(lu)稱為(wei)輔(fu)助電路(lu)(lu)。輔(fu)助電路(lu)(lu)發生故障(zhang)后,其故障(zhang)原因較為(wei)復(fu)雜,除固(gu)化(hua)程(cheng)序丟(diu)失或(huo)集成(cheng)塊(kuai)損壞(這(zhe)類故障(zhang)處理(li)方法一般只能(neng)采(cai)用(yong)控(kong)制(zhi)板整塊(kuai)更換(huan)或(huo)集成(cheng)塊(kuai)更換(huan))外,其他故障(zhang)較易判斷和處理(li)。
半天檢修好西門子直流調速裝置啟動電機飛車;恒稅(shui)電(dian)氣(qi)解決此故障(zhang)過十年(nian),技(ji)術成熟,配件齊(qi),當天(tian)送機(ji)(ji)當天(tian)搞定(ding)(ding)好故障(zhang)包括;上電(dian)跳閘,開機(ji)(ji)炸(zha)可(ke)控硅,模塊壞,IGBT燒,運行幾分鐘(zhong)報(bao)警,無(wu)(wu)法復位,通電(dian)燒保險,無(wu)(wu)勵(li)(li)磁(ci)(ci)(ci)電(dian)壓,報(bao)勵(li)(li)磁(ci)(ci)(ci)故障(zhang),勵(li)(li)磁(ci)(ci)(ci)過流(liu),速(su)(su)度(du)(du)不可(ke)控維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),超速(su)(su)維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),帶(dai)負載(zai)報(bao)故障(zhang)維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),冷卻風機(ji)(ji)壞維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),散熱風扇壞維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),直流(liu)調速(su)(su)裝(zhuang)置(zhi)風扇原廠出(chu)售,主板銷(xiao)售,脈沖(chong)觸發板銷(xiao)售,轉速(su)(su)度(du)(du)不穩(wen)(wen)定(ding)(ding)維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),可(ke)控硅晶閘管(guan)燒維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),直流(liu)調速(su)(su)裝(zhuang)置(zhi)無(wu)(wu)顯示維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),A018,A015,運轉速(su)(su)度(du)(du)不連貫(guan)維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),高速(su)(su)不穩(wen)(wen)定(ding)(ding)維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),低速(su)(su)不穩(wen)(wen)定(ding)(ding)維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),啟動合閘跳保險維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),運轉不出(chu)力(li)維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),控制板維(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)等等。西門子6RA70直流(liu)調速(su)(su)器(qi)常(chang)見故障(zhang)報(bao)警:F001,F004,F005,F006 ,F007 ,F030 ,F036,F038,F040 F042,F046,F050,F052,F062,F068,F031,A031,A035,A025,F067,88888,A018,O12.1/O12.2,A019,10.3,F043