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直流電機控制器DCS550維修單位-解決各故障,ABB直流傳(chuan)動器(qi)(qi)維(wei)修,ABB直流變頻器(qi)(qi)維(wei)修
因此我們維(wei)修部的同事進行了通電觀察檢測(ce):
ABB直流電機控(kong)制器通(tong)電(dian)(dian)(dian)(dian)檢測方法(fa):ABB直(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)驅(qu)動(dong)(dong)器(qi)此機(ji)(ji)(ji)(ji)低壓(ya)(ya)交流(liu)(liu)(liu)(liu)輸入供給(gei)控(kong)制電(dian)(dian)(dian)(dian)源(yuan),然后(hou)整(zheng)(zheng)流(liu)(liu)(liu)(liu)濾波,兩個4V-15VDC-DC轉換器(qi)模塊轉換后(hou)得到(dao)后(hou)級所需電(dian)(dian)(dian)(dian)壓(ya)(ya)做控(kong)制電(dian)(dian)(dian)(dian)源(yuan)。為了(le)方便,可以不使用(yong)隔離(li)變壓(ya)(ya)器(qi)輸人低壓(ya)(ya)交流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)源(yuan),而在交流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)源(yuan)輸入端直(zhi)(zhi)(zhi)接接入24V直(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)源(yuan),因為不管正負(fu),直(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)經過整(zheng)(zheng)流(liu)(liu)(liu)(liu)橋以后(hou),都可以得到(dao)方向一致的(de)(de)(de)直(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)壓(ya)(ya)。通(tong)電(dian)(dian)(dian)(dian)后(hou)測試各部(bu)分電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)壓(ya)(ya),15V輸出(chu)正常(chang)(chang)(chang)(chang),4個1GBT的(de)(de)(de)G-S負(fu)壓(ya)(ya)正常(chang)(chang)(chang)(chang)。指針(zhen)萬用(yong)表×10擋給(gei)驅(qu)動(dong)(dong)光(guang)耦2,3腳注入電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu),6腳輸出(chu)電(dian)(dian)(dian)(dian)壓(ya)(ya)變化明顯(xian),相對應的(de)(de)(de)IGBT模塊GS轉為正壓(ya)(ya),4路測試正常(chang)(chang)(chang)(chang)。發現機(ji)(ji)(ji)(ji)器(qi)接直(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)的(de)(de)(de)兩根輸出(chu)線(xian)之間并聯了(le)接觸(chu)(chu)器(qi)的(de)(de)(de)常(chang)(chang)(chang)(chang)開觸(chu)(chu)點(dian),不知用(yong)于什么(me)目的(de)(de)(de)咨詢了(le)工(gong)廠的(de)(de)(de)工(gong)程師他也不太明白這個作用(yong),為了(le)節(jie)約維修是(shi)時將接觸(chu)(chu)器(qi)的(de)(de)(de)線(xian)圈是(shi)380VAC供電(dian)(dian)(dian)(dian),直(zhi)(zhi)(zhi)接給(gei)線(xian)圈接入38VAC電(dian)(dian)(dian)(dian)壓(ya)(ya),觸(chu)(chu)點(dian)吸合以后(hou)測試觸(chu)(chu)點(dian)電(dian)(dian)(dian)(dian)阻有600多(duo)歐姆(mu),顯(xian)然觸(chu)(chu)點(dian)已經損壞。從倉(cang)庫(ku)領(ling)了(le)新的(de)(de)(de)接觸(chu)(chu)器(qi)后(hou)更換上去后(hou)再次試機(ji)(ji)(ji)(ji),這臺ABB直(zhi)(zhi)(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)驅(qu)動(dong)(dong)器(qi)故(gu)障(zhang)消除(chu),機(ji)(ji)(ji)(ji)器(qi)恢(hui)復(fu)正常(chang)(chang)(chang)(chang)的(de)(de)(de)運行。
直流電機控制器DCS550維修單位-解決各故障,ABB直流傳動器維修,ABB直流變頻器維修
ABB直流(liu)調速器故(gu)障維修案例與流(liu)程
ABB系列的(de)直(zhi)流(liu)調(diao)速器,功率(lv)覆蓋廣(guang)泛,軟件操作界(jie)面便捷,上手(shou)很快,組態簡單,各個系列在我國的(de)使用(yong)也十分廣(guang)泛。恒稅接下(xia)來介紹ABB直(zhi)流(liu)調(diao)速器維(wei)修(xiu)(xiu)中cs400系列的(de)毛病原因和(he)維(wei)修(xiu)(xiu)方法以及實(shi)例分享。
des400系(xi)列(lie)在硬件(jian)便利,首(shou)要分電源驅(qu)動板和使用(yong)控(kong)制板,dcs400系(xi)列(lie)由(you)于規劃原因,電源驅(qu)動板華和勵磁(ci)控(kong)制集成在同一-個板上,而des400軟件(jian)不支持勵磁(ci)關(guan)閉這個功用(yong),這給(gei)維修帶(dai)來(lai)了難(nan)度。
ABB直(zhi)流(liu)(liu)調速器修(xiu)理(li)哉障(zhang)判定:注板+24+端口(kou)穩(wen)壓(ya)元作(zuo)短路,換新,毛病掃除(chu)。在ABB直(zhi)流(liu)(liu)調返器修(xiu)理(li)中,怕遇到(dao)不(bu)專業的(de)修(xiu)理(li)技術(shu)人員,不(bu)但不(bu)能處理(li)問(wen)題(ti),還會耽(dan)誤工作(zuo),添(tian)加修(xiu)理(li)成木,木文將分享(xiang)專業修(xiu)理(li)人員的(de)修(xiu)理(li)服務流(liu)(liu)程(cheng)。
1.首先詢問用戶損壞電氣設備故(gu)障情況(kuang)及現(xian)場情況(kuang)。
2.依據用戶的(de)設備(bei)故(gu)障(zhang)描(miao)述,剖析造成(cheng)設備(bei)故(gu)障(zhang)的(de)主要原因。
3.對機器進行全面的清潔,確認被損(sun)壞的設(she)備,分析維修后設(she)備的可(ke)行性。
4.很(hen)據(ju)被(bei)損(sun)壞零(ling)件的位置,找出(chu)損(sun)零(ling)件的主要原(yuan)因,以免類似的故障再(zai)次出(chu)現。
5.出具機器(qi)的檢測(ce)報告和機器(qi)維修費(fei)用,報價后進行修理。
6.設備修復后對(dui)設備進行(xing)欠載(zai)實驗,正常運行(xing)通知客(ke)戶(hu)。
在實踐(jian)修理中, ahhrs400由十戚(qi)磁(ci)引發的(de)(de)設備故障最多、其(qi)次在ARR直(zhi)流調速器修理中,操控(kong)(kong)電源(yuan)(yuan)的(de)(de)故障也(ye)是(shi)很(hen)大的(de)(de),這個板(ban)的(de)(de)操控(kong)(kong)電源(yuan)(yuan)次級是(shi)特殊(shu)的(de)(de),不聯機(ji)的(de)(de)主控(kong)(kong)板(ban),電源(yuan)(yuan)會產(chan)生維護,一(yi)旦連接(jie)主控(kong)(kong)板(ban)維修電源(yuan)(yuan),弄不好會燒(shao)壞主板(ban)。
實例: dcs400(500a) 4a調(diao)速器,毛病(bing)是(shi)電(dian)源(yuan)打嗝.主板數碼管明滅不定,客戶送修。
ABB直(zhi)流調速(su)器修理剖析: :
1、后級有短路
2、是取樣(yang)(yang)電(dian)路出(chu)現故障;造成的反(fan)饋取樣(yang)(yang)過壓維(wei)護。測(ce)后級阻抗(kang),靜態(tai)阻抗(kang)沒(mei)有明顯短接;拔掉勵磁供電(dian),故障依然存在(zai),因為(wei)不連接三返電(dian)源一樣(yang)(yang)打嗝。
ABB直流調(diao)速器修理辦法:
拔掉設(she)備主(zhu)控(kong)(kong)板,改(gai)動(dong)uc3844電(dian)(dian)源(yuan)芯(xin)片取樣(yang)的反饋辦法,直(zhi)接(jie)是(shi)甩開(kai)次級職樣(yang),此時將供(gong)電(dian)(dian)反饋直(zhi)接(jie)引進(jin)2足(這樣(yang)可以直(zhi)接(jie)有經(jing)驗(yan)確認電(dian)(dian)阻值(zhi)大小之分(fen),否(fou)則會(hui)造(zao)成次級供(gong)電(dian)(dian)過壓),此時電(dian)(dian)源(yuan)可以直(zhi)接(jie)起(qi)振(zhen)運作,接(jie)著調整電(dian)(dian)阻組(zu)織,等電(dian)(dian)源(yuan)穩定到供(gong)電(dian)(dian)電(dian)(dian)壓,此刻不能插主(zhu)控(kong)(kong)板上去,先觀察(cha)一下電(dian)(dian)源(yuan)驅動(dong)板,勵磁控(kong)(kong)制(zhi)板整個元件溫升是(shi)否(fou)正常,
在ABB直流調速器修理(li)中,38xx系列 申源芯片,這個(ge)步驟能夠判別出電源空隙起振的毛病(bing)點。
1.主要是(shi)后(hou)級(ji)元(yuan)(yuan)件(jian)的溫升(sheng):有短路的元(yuan)(yuan)件(jian)溫度(du)會馬上發熱,取(qu)下后(hou)級(ji)芯片,繼續看著,十分(fen)鐘左右后(hou)溫度(du)正常能(neng)夠確認元(yuan)(yuan)件(jian)基(ji)本上是(shi)正常的。
2.驅(qu)動(dong)板溫度(du)正常,這(zhe)下(xia)能夠帶(dai)上主(zhu)(zhu)控板,測電壓,留意(yi)主(zhu)(zhu)控板元件溫。
3.還不起振,可以(yi)考慮初(chu)級(ji)元器(qi)件和開關變壓器(qi)原件有沒有出現故障(zhang)。