廠商性質：經銷商

所在地：上海市

更(geng)新時間：2024-06-11

產品簡介：

西門子直流控制器6RA28報F04不能運行故障分(fen)析處理；如果上電(dian)就報那硬件問(wen)題可能性(xing)很大，需(xu)要懂技術(shu)的(de)進一(yi)步檢測(ce)，西門(men)子6RA28直流調速器(qi)剛送來(lai)維修部的(de)時候，全部機(ji)(ji)身都是(shi)灰(hui)塵(chen)，用戶是(shi)這(zhe)臺(tai)機(ji)(ji)器(qi)是(shi)用在紡織機(ji)(ji)上的(de)，現場(chang)灰(hui)塵(chen)太多(duo)，平(ping)時工作任(ren)務(wu)緊(jin)技術(shu)人(ren)員沒有認真保養(yang)，我們(men)用吸塵(chen)器(qi)將灰(hui)塵(chen)打掃干凈(jing)后已(yi)經聞到一(yi)股焦(jiao)味，用戶說(shuo)他們(men)自己的(de)技術(shu)人(ren)員以前維修過一(yi)次(ci)。

    我打開蓋看(kan)(kan)了一下(xia)，電(dian)(dian)(dian)(dian)(dian)(dian)源板的保險還(huan)是(shi)好的，看(kan)(kan)來(lai)情況(kuang)沒(mei)有(you)太嚴重。接通電(dian)(dian)(dian)(dian)(dian)(dian)源板供電(dian)(dian)(dian)(dian)(dian)(dian)后(hou)，顯示屏有(you)一點點暗光，數字(zi)都看(kan)(kan)不清楚(chu)，看(kan)(kan)來(lai)電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)壓已(yi)(yi)經(jing)*不正常(chang)。開關電(dian)(dian)(dian)(dian)(dian)(dian)板板測(ce)量(liang)輸(shu)(shu)出正負15伏(fu)(fu)只 而伏(fu)(fu)，24伏(fu)(fu)只有(you)16伏(fu)(fu)，初級電(dian)(dian)(dian)(dian)(dian)(dian)源芯(xin)片(pian)為UC3844,測(ce)量(liang)期8腳外的電(dian)(dian)(dian)(dian)(dian)(dian)阻已(yi)(yi)經(jing)燒斷開，更(geng)換3844后(hou)測(ce)量(liang)輸(shu)(shu)出24伏(fu)(fu)電(dian)(dian)(dian)(dian)(dian)(dian)壓高(gao)達38伏(fu)(fu)，看(kan)(kan)來(lai)輸(shu)(shu)出級的取樣電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)或者反饋電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)有(you)問題(ti)，通過(guo)仔細的檢測(ce)查到PC431已(yi)(yi)經(jing)損壞，更(geng)換后(hou)測(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)電(dian)(dian)(dian)(dian)(dian)(dian)壓正常(chang)，整機送電(dian)(dian)(dian)(dian)(dian)(dian)測(ce)試沒(mei)有(you)問題(ti)。UC2844/3844系列脈寬調制芯(xin)片(pian)已(yi)(yi)經(jing)廣泛應(ying)于于開關電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)，特(te)別是(shi)工業級產品像直流(liu)調速器(qi)和交流(liu)變頻(pin)器(qi)，所(suo)以(yi)作為專業維修技(ji)術人員，這(zhe)部(bu)分電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)的維修技(ji)術是(shi)必須(xu)要重點掌握的。以(yi)下(xia)是(shi)芯(xin)片(pian)資(zi)料介紹：

    UC3844是(shi)高(gao)(gao)(gao)性能固定頻率電(dian)(dian)流(liu)模式控(kong)制器(qi)專為離線和直流(liu)至直流(liu)變換器(qi)應用而設(she)計，為設(she)計人員提供只需最少外部元件就(jiu)能獲得成(cheng)本(ben)效益高(gao)(gao)(gao)的解決方案。這些(xie)集成(cheng)電(dian)(dian)路具有可微(wei)調的振蕩器(qi)、能進(jin)行精(jing)確的占(zhan)空比控(kong)制、溫度(du)補償的參(can)考、高(gao)(gao)(gao)增益誤差放(fang)大器(qi)。電(dian)(dian)流(liu)取樣比較器(qi)和大電(dian)(dian)流(liu)圖騰柱式輸出，是(shi)驅(qu)動功率MOSFET的理想器(qi)件。

    其(qi)它的保(bao)護特性包括(kuo)輸(shu)入和(he)(he)參考欠壓鎖定(ding)，各有滯后、逐周電(dian)(dian)流(liu)限制(zhi)、可(ke)編(bian)程輸(shu)出靜區時間和(he)(he)單(dan)個脈沖測量鎖存。這(zhe)些器(qi)件可(ke)提供8腳雙列直插塑料封裝和(he)(he)14腳塑料表(biao)面貼(tie)裝封裝（SO-14）。SO-14封裝的圖騰柱式(shi)輸(shu)出級有單(dan)獨的電(dian)(dian)源和(he)(he)接地管腳。是(shi)專門設計用(yong)于離(li)線和(he)(he)直流(liu)到直流(liu)交換器(qi)應用(yong)的高(gao)性能(neng)(neng)，固定(ding)頻率，電(dian)(dian)流(liu)模式(shi)控制(zhi)器(qi)。為設計者提供使用(yong)最少外部元件的高(gao)性能(neng)(neng)價格比的解決方案。

西門子直流控制器6RA28報F04不能運行故障分析處理；其他故障解決(jue)范圍炸(zha)機(ji)，炸(zha)模塊，電(dian)機(ji)不(bu)(bu)轉，高(gao)速(su)(su)不(bu)(bu)穩(wen)(wen)，無(wu)勵磁電(dian)壓，跳(tiao)閘(zha)(zha)，無(wu)顯(xian)(xian)示，控制板壞，轉速(su)(su)不(bu)(bu)正(zheng)常，開不(bu)(bu)了機(ji)，顯(xian)(xian)示字符殘缺(que)，速(su)(su)度不(bu)(bu)穩(wen)(wen)，燒可(ke)控硅(gui)，報警(jing)F02,FO4,FO5,F12,F25等故障維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，無(wu)勵磁電(dian)壓維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，燒保(bao)險(xian)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)， 模塊炸(zha)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)運(yun)轉速(su)(su)度不(bu)(bu)穩(wen)(wen)定(ding)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，燒可(ke)控硅(gui)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，晶閘(zha)(zha)管(guan)燒維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，直(zhi)流調速(su)(su)裝置無(wu)顯(xian)(xian)示維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，運(yun)轉速(su)(su)度不(bu)(bu)連貫(guan)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，高(gao)速(su)(su)不(bu)(bu)穩(wen)(wen)定(ding)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，低速(su)(su)不(bu)(bu)穩(wen)(wen)定(ding)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，啟(qi)動合(he)閘(zha)(zha)跳(tiao)保(bao)險(xian)維(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)