西門子6RA28直流調速器報F20當天可修好，直流調速器維修的過程當中擁有很多年的經驗，重要的是他們見過各種不同種類的直流調速器，而且也有很多不同品牌的直流調速器維修特約中心，在同行業中的信譽度肯定也是高的，公司能直接幫助每一個客戶解決他們在使用過程當中的任何問題。

西(xi)門子6RA28直(zhi)流(liu)(liu)調速器(qi)(qi)(qi)報F2*診斷(duan);電子板電源故障(zhang)(5U1，5V1，5W1)直(zhi)流(liu)(liu)調速器(qi)(qi)(qi)高壓(ya)(ya)直(zhi)流(liu)(liu)供電正常(chang)(chang)(chang)，操(cao)作盤無任(ren)何(he)顯示(shi)，而且變(bian)(bian)頻(pin)器(qi)(qi)(qi)控制電路(lu)(lu)上都(dou)沒(mei)有(you)低壓(ya)(ya)直(zhi)流(liu)(liu)供電，屬于開關電源電路(lu)(lu)不(bu)工(gong)作。檢測(ce)開關管VT漏極D上電壓(ya)(ya)正常(chang)(chang)(chang)，測(ce)得(de)控制極G上無脈(mo)沖信(xin)號而只有(you)一直(zhi)流(liu)(liu)電壓(ya)(ya)。這UC3844輸出信(xin)號不(bu)正常(chang)(chang)(chang)，經檢查UC3844損壞(huai)(huai)，同時開關管也損壞(huai)(huai)。更換UC3844，更換開關管，變(bian)(bian)頻(pin)器(qi)(qi)(qi)恢復正常(chang)(chang)(chang)。,變(bian)(bian)頻(pin)器(qi)(qi)(qi)維(wei)修的功率較大，并且變(bian)(bian)頻(pin)器(qi)(qi)(qi)輸出端與(yu)電機之(zhi)間是直(zhi)接(jie)(jie)連接(jie)(jie)的，則(ze)需要將變(bian)(bian)頻(pin)器(qi)(qi)(qi)輸入及(ji)輸出端之(zhi)間及(ji)三相均進行可靠短接(jie)(jie)，在對電動機絕緣(yuan)進行測(ce)試時，從而避免變(bian)(bian)頻(pin)器(qi)(qi)(qi)內部(bu)被兆歐表的輸出電壓(ya)(ya)加入，導致變(bian)(bian)頻(pin)器(qi)(qi)(qi)內部(bu)元(yuan)器(qi)(qi)(qi)件而造成(cheng)損壞(huai)(huai)。

西門(men)子(zi)6RA28直(zhi)流(liu)調速(su)(su)器常(chang)見故(gu)障(zhang)：炸(zha)(zha)機，炸(zha)(zha)模塊(kuai)，電機不(bu)(bu)(bu)轉(zhuan)(zhuan)，高(gao)(gao)速(su)(su)不(bu)(bu)(bu)穩，無勵(li)磁電壓(ya)，跳(tiao)閘(zha)，無顯示，控制板(ban)(ban)(ban)(ban)壞，轉(zhuan)(zhuan)速(su)(su)不(bu)(bu)(bu)正常(chang)，開不(bu)(bu)(bu)了(le)機，顯示字符殘缺，速(su)(su)度不(bu)(bu)(bu)穩，燒(shao)(shao)可控硅，報(bao)警F02,FO4,FO5,F12,F25等故(gu)障(zhang)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，無勵(li)磁電壓(ya)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，燒(shao)(shao)保險(xian)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)， 模塊(kuai)炸(zha)(zha)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)運轉(zhuan)(zhuan)速(su)(su)度不(bu)(bu)(bu)穩定維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，燒(shao)(shao)可控硅維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，晶閘(zha)管(guan)燒(shao)(shao)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，直(zhi)流(liu)調速(su)(su)裝置無顯示維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，運轉(zhuan)(zhuan)速(su)(su)度不(bu)(bu)(bu)連貫維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，高(gao)(gao)速(su)(su)不(bu)(bu)(bu)穩定維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，低速(su)(su)不(bu)(bu)(bu)穩定維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，啟動(dong)合閘(zha)跳(tiao)保險(xian)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，運轉(zhuan)(zhuan)不(bu)(bu)(bu)出(chu)力(li)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，報(bao)勵(li)磁故(gu)障(zhang)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，優化通不(bu)(bu)(bu)過維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，啟動(dong)報(bao)代碼故(gu)障(zhang)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，炸(zha)(zha)機維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，電源板(ban)(ban)(ban)(ban)壞維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，速(su)(su)度不(bu)(bu)(bu)可控維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，超(chao)速(su)(su)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，帶(dai)負載(zai)報(bao)故(gu)障(zhang)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，冷卻風(feng)機壞維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，散熱風(feng)扇(shan)壞維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)，直(zhi)流(liu)調速(su)(su)裝置風(feng)扇(shan)銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，勵(li)磁板(ban)(ban)(ban)(ban)銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，電源板(ban)(ban)(ban)(ban)銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，可控硅銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，晶閘(zha)管(guan)銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，熔斷器銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，主板(ban)(ban)(ban)(ban)銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，面板(ban)(ban)(ban)(ban)銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，擴展板(ban)(ban)(ban)(ban)銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，CBP2板(ban)(ban)(ban)(ban)銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，通訊板(ban)(ban)(ban)(ban)銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，脈沖觸發板(ban)(ban)(ban)(ban)銷(xiao)(xiao)(xiao)(xiao)售(shou)(shou)(shou)(shou)，控制板(ban)(ban)(ban)(ban)維(wei)修(xiu)(xiu)(xiu)(xiu)(xiu)等等。

西門子6RA28直流調速器報F20當天可修好型號：

6RA2881-6DS21-0        
6RA2830-6DV61-0                 
6RA2825-6DS21-0
6RA2828-6DS21-0
6RA2831-6DS21-0
6RA2875-6DS21-0
6RA2877-6DS21-0
6RA2881-6DS21-0
6RA2885-6DS21-0
6RA2825-6DV61-0
6RA2830-6DV61-0
6RA2832-6DV61-0
6RA2875-6DV61-0
6RA2877-6DV61-0
6RA2881-6DV61-0
6RA2885-6DS21-0
6RA2881-6DV61-0
6RA2875-6DV61-0
6RA2877-6DV61-0