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(gang)送來維(wei)(wei)修部的(de)時候，全部機身(shen)都是(shi)灰塵(chen)(chen)，用戶(hu)是(shi)這(zhe)臺機器是(shi)用在紡織機上的(de)，現(xian)場灰塵(chen)(chen)太多，平時工(gong)作(zuo)任務緊(jin)技術人員(yuan)(yuan)沒有認真保養，我們用吸塵(chen)(chen)器將灰塵(chen)(chen)打掃干凈后(hou)已經聞到(dao)一(yi)股焦味，用戶(hu)說他們自(zi)己的(de)技術人員(yuan)(yuan)以前維(wei)(wei)修過一(yi)次。

我打開(kai)蓋看(kan)了一下，電(dian)(dian)(dian)(dian)源(yuan)板(ban)(ban)的(de)(de)保(bao)險還是好的(de)(de)，看(kan)來情況沒有(you)(you)太嚴重(zhong)。接通(tong)電(dian)(dian)(dian)(dian)源(yuan)板(ban)(ban)供電(dian)(dian)(dian)(dian)后，顯(xian)示屏(ping)有(you)(you)一點點暗光(guang)，數字都看(kan)不(bu)(bu)清(qing)楚，看(kan)來電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)壓(ya)已經(jing)*不(bu)(bu)正(zheng)常(chang)。開(kai)關電(dian)(dian)(dian)(dian)板(ban)(ban)板(ban)(ban)測量(liang)輸出正(zheng)負15伏(fu)只(zhi) 而伏(fu)，24伏(fu)只(zhi)有(you)(you)16伏(fu)，初級(ji)電(dian)(dian)(dian)(dian)源(yuan)芯片(pian)為(wei)UC3844,測量(liang)期8腳外(wai)的(de)(de)電(dian)(dian)(dian)(dian)阻已經(jing)燒斷開(kai)，更換3844后測量(liang)輸出24伏(fu)電(dian)(dian)(dian)(dian)壓(ya)高達38伏(fu)，看(kan)來輸出級(ji)的(de)(de)取樣電(dian)(dian)(dian)(dian)路(lu)(lu)或者反(fan)饋電(dian)(dian)(dian)(dian)路(lu)(lu)有(you)(you)問(wen)題(ti)(ti)，通(tong)過仔細(xi)的(de)(de)檢(jian)測查(cha)到(dao)PC431已經(jing)損壞，更換后測量(liang)電(dian)(dian)(dian)(dian)路(lu)(lu)電(dian)(dian)(dian)(dian)壓(ya)正(zheng)常(chang)，整機送電(dian)(dian)(dian)(dian)測試沒有(you)(you)問(wen)題(ti)(ti)。UC2844/3844系(xi)列脈寬(kuan)調制(zhi)芯片(pian)已經(jing)廣泛應于于開(kai)關電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)路(lu)(lu)中，特別(bie)是工業級(ji)產品像直流調速器和交流變頻(pin)器，所以(yi)作為(wei)專業維修技術人員，這部分電(dian)(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)(dian)路(lu)(lu)的(de)(de)維修技術是必須要重(zhong)點掌握的(de)(de)。以(yi)下是芯片(pian)資料介紹：

    UC3844是(shi)高性能(neng)(neng)固定(ding)頻率電(dian)流(liu)(liu)模(mo)式(shi)控制器專為(wei)離(li)線和直流(liu)(liu)至直流(liu)(liu)變換器應(ying)用(yong)而設計，為(wei)設計人員提供只需(xu)最(zui)少(shao)外部元件就能(neng)(neng)獲得成本效(xiao)益高的解決方案。這些集成電(dian)路(lu)具有可微調的振蕩(dang)器、能(neng)(neng)進行(xing)精確的占空(kong)比(bi)控制、溫(wen)度補償的參考、高增(zeng)益誤差放大器。電(dian)流(liu)(liu)取樣比(bi)較器和大電(dian)流(liu)(liu)圖騰柱(zhu)式(shi)輸(shu)出，是(shi)驅動功率MOSFET的理想(xiang)器件。

    其它的(de)保護特性包括輸入和(he)參(can)考(kao)欠(qian)壓鎖定，各(ge)有滯后、逐(zhu)周電(dian)(dian)流限制(zhi)、可編程輸出(chu)靜(jing)區時(shi)間和(he)單(dan)個脈(mo)沖測量鎖存。這些(xie)器(qi)件可提供(gong)8腳雙(shuang)列直插塑料封裝(zhuang)和(he)14腳塑料表(biao)面貼(tie)裝(zhuang)封裝(zhuang)（SO-14）。SO-14封裝(zhuang)的(de)圖騰柱式輸出(chu)級有單(dan)獨的(de)電(dian)(dian)源(yuan)和(he)接地管(guan)腳。是專門設計(ji)用于(yu)離(li)線和(he)直流到直流交換器(qi)應(ying)用的(de)高(gao)性能(neng)，固定頻率，電(dian)(dian)流模式控(kong)制(zhi)器(qi)。為(wei)設計(ji)者(zhe)提供(gong)使用最少外部(bu)元件的(de)高(gao)性能(neng)價格比的(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(dian)跳(tiao)閘(zha)，運(yun)行炸可(ke)(ke)控硅(gui)，無法復位，故(gu)障消不掉(diao)，模塊(kuai)壞，IGBT燒，通電(dian)燒保險(xian)(xian)，無勵磁電(dian)壓，報勵磁故(gu)障，勵磁過(guo)流(liu)，速(su)度不可(ke)(ke)控維(wei)(wei)修(xiu)(xiu)，超速(su)維(wei)(wei)修(xiu)(xiu)，帶(dai)負(fu)載報故(gu)障維(wei)(wei)修(xiu)(xiu)，冷卻風(feng)機壞維(wei)(wei)修(xiu)(xiu)，散(san)熱風(feng)扇(shan)壞維(wei)(wei)修(xiu)(xiu)，直流(liu)調速(su)裝置風(feng)扇(shan)銷(xiao)(xiao)售(shou)(shou)，勵磁板(ban)(ban)銷(xiao)(xiao)售(shou)(shou)，電(dian)源板(ban)(ban)銷(xiao)(xiao)售(shou)(shou)，可(ke)(ke)控硅(gui)銷(xiao)(xiao)售(shou)(shou)，晶閘(zha)管銷(xiao)(xiao)售(shou)(shou)，熔(rong)斷器銷(xiao)(xiao)售(shou)(shou)，主板(ban)(ban)銷(xiao)(xiao)售(shou)(shou)，面板(ban)(ban)銷(xiao)(xiao)售(shou)(shou)，擴展板(ban)(ban)銷(xiao)(xiao)售(shou)(shou)，CBP2板(ban)(ban)銷(xiao)(xiao)售(shou)(shou)，通訊板(ban)(ban)銷(xiao)(xiao)售(shou)(shou)，脈(mo)沖觸發(fa)板(ban)(ban)銷(xiao)(xiao)售(shou)(shou)，轉速(su)度不穩(wen)定維(wei)(wei)修(xiu)(xiu)，可(ke)(ke)控硅(gui)晶閘(zha)管燒維(wei)(wei)修(xiu)(xiu)，直流(liu)調速(su)裝置無顯(xian)示維(wei)(wei)修(xiu)(xiu)，A018,A015,運(yun)轉速(su)度不連貫維(wei)(wei)修(xiu)(xiu)，高速(su)不穩(wen)定維(wei)(wei)修(xiu)(xiu)，低速(su)不穩(wen)定維(wei)(wei)修(xiu)(xiu)，啟動(dong)合閘(zha)跳(tiao)保險(xian)(xian)維(wei)(wei)修(xiu)(xiu)，運(yun)轉不出力維(wei)(wei)修(xiu)(xiu)，控制板(ban)(ban)維(wei)(wei)修(xiu)(xiu)等等。常見故(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)修(xiu)(xiu)。

西門子直(zhi)流調速器上電后一直(zhi)報警；

 1. 可以選(xuan)擇讓我司(si)工程(cheng)師(shi)上門現場(chang)檢(jian)測維修.

  2. 可以選(xuan)擇物流公司或者快(kuai)遞(di)方式(shi)發到我公司維修中(zhong)心(xin)。

  檢(jian)測：實行(xing)免(mian)費檢(jian)測，先檢(jian)測再報價，后簽(qian)定協議(yi)維修。