西(xi)門子(zi)數控車(che)床維(wei)修(xiu)，十(shi)年維(wei)修(xiu)品質，專業技(ji)術，硬件故障(zhang)快速修(xiu)復，全套測試平臺。

當我們(men)(men)在使用數控(kong)車床(chuang)的時候難免會遇到一些問(wen)題，等待機修維(wei)(wei)修的時間由比較長，如果我們(men)(men)能掌握(wo)一些數控(kong)車床(chuang)的維(wei)(wei)修技巧，那么，就不用浪費那么多(duo)時間等待別人來維(wei)(wei)修了。

機(ji)床(chuang)在(zai)運行時(shi)機(ji)床(chuang)照明燈突然不(bu)(bu)亮，機(ji)床(chuang)操作面(mian)板燈也不(bu)(bu)亮，系(xi)統電源正常，同(tong)時(shi)系(xi)統急停報警，和主軸無信(xin)號警。關機(ji)后重新上(shang)電故障依舊。

故障分析檢查(cha):經詢問當時(shi)操作人(ren)員，沒有違規(gui)操作，排除人(ren)為原因，也可(ke)以排除機(ji)(ji)械原因，應該(gai)是電(dian)(dian)(dian)氣(qi)(qi)故障引起。該(gai)機(ji)(ji)床(chuang)的電(dian)(dian)(dian)器原理圖顯示，這些失電(dian)(dian)(dian)區域都和24V有關(guan)，并(bing)且(qie)該(gai)機(ji)(ji)床(chuang)擁有兩個穩壓(ya)電(dian)(dian)(dian)源，一(yi)個是I/O接(jie)(jie)口(kou)電(dian)(dian)(dian)源，另一(yi)個為系(xi)統電(dian)(dian)(dian)源。失電(dian)(dian)(dian)區域都與I/O接(jie)(jie)口(kou)有關(guan)，于是打開(kai)電(dian)(dian)(dian)氣(qi)(qi)柜觀察(cha)發現I/O接(jie)(jie)口(kou)穩壓(ya)電(dian)(dian)(dian)源指示燈未(wei)能(neng)點亮，說(shuo)明(ming)該(gai)電(dian)(dian)(dian)源未(wei)能(neng)正常工作或(huo)損壞。

由(you)穩壓(ya)電(dian)(dian)(dian)源的工作原(yuan)理知道(dao)，穩壓(ya)電(dian)(dian)(dian)源有電(dian)(dian)(dian)流(liu)短路(lu)和(he)過(guo)載保(bao)(bao)護(hu)的功能，當電(dian)(dian)(dian)源短路(lu)或過(guo)載時自動(dong)關斷電(dian)(dian)(dian)源輸(shu)出(chu)(chu)，以保(bao)(bao)護(hu)電(dian)(dian)(dian)源電(dian)(dian)(dian)路(lu)不被損壞(huai)。于是(shi)試(shi)著把電(dian)(dian)(dian)源的輸(shu)出(chu)(chu)負載線路(lu)拆下來(lai)，結果發現(xian)重新上電(dian)(dian)(dian)后電(dian)(dian)(dian)源指示燈亮了。這說(shuo)明(ming)電(dian)(dian)(dian)源本身沒有損壞(huai)。通過(guo)分析(xi)得知該電(dian)(dian)(dian)源為I/O接(jie)(jie)口(kou)電(dian)(dian)(dian)源，負載不大，也不會出(chu)(chu)現(xian)過(guo)載現(xian)象(xiang)，應該是(shi)輸(shu)出(chu)(chu)回路(lu)中有短路(lu)故障。沿(yan)著輸(shu)出(chu)(chu)線號進行檢查發現(xian)有一根24V+輸(shu)出(chu)(chu)線接(jie)(jie)頭從(cong)絕緣膠布中露出(chu)(chu)并接(jie)(jie)觸到機(ji)床床體。

原因(yin)很明(ming)顯:由于(yu)該線與機床發生對地短(duan)路，造成該穩壓電(dian)源處于(yu)自我(wo)保護狀態，使得操(cao)作(zuo)面(mian)板和一些I/O接(jie)口(kou)繼電(dian)器(qi)供電(dian)停止，導致發生以上故障。至于(yu)變頻器(qi)報警(jing)可能24號(hao)不能到(dao)位發出(chu)報警(jing)。

解決(jue)辦(ban)法:用(yong)絕緣(yuan)膠(jiao)布把接頭處重新(xin)包好，重新(xin)上電(dian)開機所有故障解決(jue)，報警解除照明燈也亮了。