數控立車西門子直流調速器上電后一直報警；故障處理；

直流調速器剛送來維修部(bu)的時(shi)候，全(quan)部(bu)機身都(dou)是灰(hui)塵(chen)，用戶是這臺(tai)機器是用在(zai)紡織機上的，現(xian)場灰(hui)塵(chen)太多，平(ping)時(shi)工作任務緊技(ji)術人(ren)員沒(mei)有認真保(bao)養(yang)，我們用吸塵(chen)器將灰(hui)塵(chen)打(da)掃干凈后已經聞到一股焦味，用戶說他們自己的技(ji)術人(ren)員以前維修過一次。

我打開蓋看(kan)了一下，電(dian)(dian)源(yuan)(yuan)板(ban)的(de)(de)保險還是好的(de)(de)，看(kan)來(lai)(lai)情況沒(mei)有(you)太嚴重(zhong)(zhong)。接通(tong)電(dian)(dian)源(yuan)(yuan)板(ban)供電(dian)(dian)后(hou)，顯示屏(ping)有(you)一點(dian)(dian)(dian)點(dian)(dian)(dian)暗光，數字都(dou)看(kan)不清楚，看(kan)來(lai)(lai)電(dian)(dian)源(yuan)(yuan)電(dian)(dian)壓已經(jing)*不正常。開關電(dian)(dian)板(ban)板(ban)測(ce)量輸出正負(fu)15伏(fu)只(zhi)(zhi) 而伏(fu)，24伏(fu)只(zhi)(zhi)有(you)16伏(fu)，初(chu)級(ji)(ji)電(dian)(dian)源(yuan)(yuan)芯片為(wei)UC3844,測(ce)量期8腳外(wai)的(de)(de)電(dian)(dian)阻已經(jing)燒斷開，更換3844后(hou)測(ce)量輸出24伏(fu)電(dian)(dian)壓高(gao)達38伏(fu)，看(kan)來(lai)(lai)輸出級(ji)(ji)的(de)(de)取樣電(dian)(dian)路(lu)或者反饋電(dian)(dian)路(lu)有(you)問(wen)題(ti)，通(tong)過仔細的(de)(de)檢測(ce)查到PC431已經(jing)損壞，更換后(hou)測(ce)量電(dian)(dian)路(lu)電(dian)(dian)壓正常，整機送電(dian)(dian)測(ce)試沒(mei)有(you)問(wen)題(ti)。UC2844/3844系列脈(mo)寬調制芯片已經(jing)廣泛應于于開關電(dian)(dian)源(yuan)(yuan)電(dian)(dian)路(lu)中，特別(bie)是工業(ye)級(ji)(ji)產品像直流(liu)調速器和交(jiao)流(liu)變頻器，所以(yi)作(zuo)為(wei)專業(ye)維(wei)(wei)修技術人(ren)員，這部分電(dian)(dian)源(yuan)(yuan)電(dian)(dian)路(lu)的(de)(de)維(wei)(wei)修技術是必須要重(zhong)(zhong)點(dian)(dian)(dian)掌握(wo)的(de)(de)。以(yi)下是芯片資料介(jie)紹：

    UC3844是(shi)高(gao)(gao)性(xing)能固定頻率電流(liu)模式控(kong)制(zhi)器(qi)專為(wei)離線和(he)(he)直流(liu)至(zhi)直流(liu)變換器(qi)應用而設計，為(wei)設計人員提供只需最少外部元件就能獲得成(cheng)本效益高(gao)(gao)的(de)(de)解決方(fang)案(an)。這些(xie)集成(cheng)電路具有可微調(diao)的(de)(de)振蕩器(qi)、能進(jin)行精(jing)確的(de)(de)占空比(bi)控(kong)制(zhi)、溫度補償的(de)(de)參考、高(gao)(gao)增益誤差放大器(qi)。電流(liu)取樣(yang)比(bi)較器(qi)和(he)(he)大電流(liu)圖騰(teng)柱式輸(shu)出(chu)，是(shi)驅動功率MOSFET的(de)(de)理(li)想器(qi)件。

    其它的(de)(de)保護特性(xing)包括(kuo)輸(shu)(shu)入和(he)(he)參考(kao)欠(qian)壓鎖(suo)定，各有滯后、逐(zhu)周(zhou)電(dian)流限制、可(ke)編程輸(shu)(shu)出靜區時間和(he)(he)單(dan)個脈沖測量(liang)鎖(suo)存(cun)。這些(xie)器件(jian)可(ke)提供8腳雙列直插塑料(liao)封(feng)(feng)裝和(he)(he)14腳塑料(liao)表面(mian)貼裝封(feng)(feng)裝（SO-14）。SO-14封(feng)(feng)裝的(de)(de)圖騰柱式(shi)輸(shu)(shu)出級有單(dan)獨的(de)(de)電(dian)源和(he)(he)接地管腳。是專門設計用于離線(xian)和(he)(he)直流到(dao)直流交換器應(ying)用的(de)(de)高(gao)性(xing)能(neng)，固定頻率，電(dian)流模式(shi)控制器。為設計者提供使用最少外部元件(jian)的(de)(de)高(gao)性(xing)能(neng)價格比(bi)的(de)(de)解決方(fang)案。

數控立車西門子直流調速器上電后一直報警；故障處理

上電跳(tiao)閘(zha)(zha)(zha)，運(yun)行炸可控(kong)硅，無法復位(wei)，故(gu)(gu)(gu)障消不(bu)(bu)(bu)掉，模(mo)塊壞(huai)，IGBT燒，通電燒保險，無勵(li)(li)磁電壓，報勵(li)(li)磁故(gu)(gu)(gu)障，勵(li)(li)磁過流(liu)(liu)，速度不(bu)(bu)(bu)可控(kong)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，超速維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，帶負載(zai)報故(gu)(gu)(gu)障維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，冷卻風(feng)(feng)機壞(huai)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，散熱風(feng)(feng)扇(shan)壞(huai)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，直(zhi)流(liu)(liu)調速裝置(zhi)風(feng)(feng)扇(shan)銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，勵(li)(li)磁板(ban)(ban)(ban)(ban)銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，電源板(ban)(ban)(ban)(ban)銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，可控(kong)硅銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，晶(jing)(jing)閘(zha)(zha)(zha)管銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，熔(rong)斷器(qi)銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，主板(ban)(ban)(ban)(ban)銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，面板(ban)(ban)(ban)(ban)銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，擴展板(ban)(ban)(ban)(ban)銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，CBP2板(ban)(ban)(ban)(ban)銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，通訊板(ban)(ban)(ban)(ban)銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，脈沖(chong)觸(chu)發板(ban)(ban)(ban)(ban)銷(xiao)(xiao)售(shou)(shou)(shou)(shou)，轉速度不(bu)(bu)(bu)穩定維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，可控(kong)硅晶(jing)(jing)閘(zha)(zha)(zha)管燒維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，直(zhi)流(liu)(liu)調速裝置(zhi)無顯(xian)示維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，A018,A015,運(yun)轉速度不(bu)(bu)(bu)連貫維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，高速不(bu)(bu)(bu)穩定維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，低速不(bu)(bu)(bu)穩定維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，啟動合閘(zha)(zha)(zha)跳(tiao)保險維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，運(yun)轉不(bu)(bu)(bu)出力(li)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)，控(kong)制板(ban)(ban)(ban)(ban)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)等等。常見(jian)故(gu)(gu)(gu)障報警：F001，F004，F005，F067，F006 ，F007 ，F030 ，F038，F040  F042，F046，F040，F050，F052，F068，A031，A035等等報警維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)(xiu)。

西門子直(zhi)流調速器上(shang)電后(hou)一直(zhi)報警；

 1. 可以選擇讓我司工程師上門現場檢測維修.

  2. 可以選(xuan)擇物(wu)流公司(si)或者(zhe)快遞(di)方式發(fa)到我公司(si)維修中心。

  檢(jian)測：實(shi)行免費檢(jian)測，先檢(jian)測再報價，后簽(qian)定協議維修(xiu)。