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更新(xin)時間：2024-06-12

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西門子S120電源模塊輸出電壓低；處理方法

       電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模(mo)塊(kuai)的(de)故障(zhang)通常(chang)(chang)可(ke)(ke)以通過(guo)(guo)對+5V測(ce)(ce)量孔的(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)測(ce)(ce)量進行(xing)判(pan)斷(duan)(duan)，若(ruo)接通NC-ON信號(hao)后(hou)，+5V測(ce)(ce)量孔有+5V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)輸(shu)出(chu)(chu)(chu)，則(ze)(ze)表明(ming)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模(mo)塊(kuai)工作(zuo)正常(chang)(chang)。若(ruo)無+5V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)輸(shu)出(chu)(chu)(chu)，則(ze)(ze)表明(ming)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模(mo)塊(kuai)可(ke)(ke)能損(sun)壞(huai)(huai)。維(wei)修時(shi)(shi)可(ke)(ke)取下(xia)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模(mo)塊(kuai)，檢(jian)(jian)(jian)查(cha)(cha)各電(dian)(dian)(dian)(dian)(dian)(dian)子元器件(jian)的(de)外觀與電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)輸(shu)入熔(rong)絲是(shi)否熔(rong)斷(duan)(duan);在此基礎(chu)上(shang)，再根據原(yuan)理圖(tu)逐一檢(jian)(jian)(jian)查(cha)(cha)各元器件(jian)。當系統(tong)出(chu)(chu)(chu)現(xian)開機時(shi)(shi)有+5V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)輸(shu)出(chu)(chu)(chu)，但幾秒(miao)鐘(zhong)后(hou)+5V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)又斷(duan)(duan)開的(de)故障(zhang)時(shi)(shi)。一般情況下(xia)，電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模(mo)塊(kuai)本(ben)身無損(sun)壞(huai)(huai)，故障(zhang)是(shi)由于系統(tong)內(nei)部(bu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)過(guo)(guo)載(zai)引起(qi)的(de)。維(wei)修時(shi)(shi)可(ke)(ke)以將電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模(mo)塊(kuai)拔出(chu)(chu)(chu)，使其與負載(zai)斷(duan)(duan)開，再通過(guo)(guo)接通NC-ON正常(chang)(chang)上(shang)電(dian)(dian)(dian)(dian)(dian)(dian)，若(ruo)這種情況下(xia)+5V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)輸(shu)出(chu)(chu)(chu)正常(chang)(chang)且電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)正常(chang)(chang)信號(hao)輸(shu)出(chu)(chu)(chu)觸點閉合，則(ze)(ze)證明(ming)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模(mo)塊(kuai)本(ben)身工作(zuo)正常(chang)(chang)，故障(zhang)原(yuan)因(yin)屬于系統(tong)內(nei)部(bu)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)過(guo)(guo)載(zai)。這時(shi)(shi)可(ke)(ke)以逐一取下(xia)系統(tong)各組成(cheng)模(mo)塊(kuai)，進一步(bu)(bu)檢(jian)(jian)(jian)查(cha)(cha)判(pan)斷(duan)(duan)故障(zhang)范圍。若(ruo)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模(mo)塊(kuai)取下(xia)后(hou)，無+5V輸(shu)出(chu)(chu)(chu)或(huo)仍然只有幾秒(miao)的(de)+5V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)輸(shu)出(chu)(chu)(chu)，可(ke)(ke)能是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)模(mo)塊(kuai)本(ben)身存在過(guo)(guo)載(zai)或(huo)內(nei)部(bu)元器件(jian)損(sun)壞(huai)(huai)，可(ke)(ke)根據原(yuan)理圖(tu)進行(xing)進一步(bu)(bu)的(de)檢(jian)(jian)(jian)查(cha)(cha)。

     電源(yuan)模塊故障指示

電源(yuan)模塊上(shang)有(you)6個LED狀態指示燈(deng)。

數(shu)控機床廠含義如下(xia)：

1)數控機(ji)床廠“SPP"亮：DC15V控制(zhi)電源(yuan)故障(zhang)。

2)“5v故障"亮：DC5V控制電(dian)源故障。

3)“EXT"亮、“模塊使能(neng)"亮：電源模塊未“使能(neng)"。

4)“EXT"不亮(liang)、“模(mo)塊使能(neng)"亮(liang)：電源模(mo)塊巳(si)“使能(neng)"，數(shu)控機床廠(chang)直流(liu)母(mu)線已(yi)充電，驅動器可(ke)以工作。

5)“三"亮(liang)：進線(xian)電源故障。

6)U。c．，。。亮：直流母(mu)線電壓(ya)過高。

西門子S120電源模塊輸出電壓低；

西門子S120電源模塊維修案例。

1.一臺S120控制(zhi)系統電(dian)源模塊(kuai)開機(ji)后(hou)(hou)屏(ping)幕上出現報警(jing)“NC、PLC無(wu)法連接(jie)"，打(da)開電(dian)(dian)(dian)氣柜后(hou)(hou)發(fa)現，電(dian)(dian)(dian)源(yuan)(yuan)模(mo)塊(kuai)(kuai)和NCU模(mo)塊(kuai)(kuai)上的指示燈和數碼管均沒有顯示，而(er)(er)電(dian)(dian)(dian)源(yuan)(yuan)模(mo)塊(kuai)(kuai)進線端電(dian)(dian)(dian)壓(ya)用三(san)用表測(ce)量為(wei)395V，因此判定(ding)該(gai)(gai)故障是由于進線電(dian)(dian)(dian)壓(ya)偏(pian)高而(er)(er)導致電(dian)(dian)(dian)源(yuan)(yuan)模(mo)塊(kuai)(kuai)內(nei)(nei)部電(dian)(dian)(dian)源(yuan)(yuan)電(dian)(dian)(dian)路(lu)出現問題，打(da)開模(mo)塊(kuai)(kuai)，檢測(ce)內(nei)(nei)部電(dian)(dian)(dian)源(yuan)(yuan)部分(fen)，發(fa)現一只大功率場效應管燒壞(huai)，更換損壞(huai)元器件，并調整該(gai)(gai)廠房電(dian)(dian)(dian)網電(dian)(dian)(dian)壓(ya)至380V后(hou)(hou)重新開機(ji)，系統啟動(dong)正常(chang)。

西門(men)子(zi)電源(yuan)模(mo)塊在使(shi)用中常見故(gu)障修(xiu)(xiu)(xiu)復(fu)包括；無輸(shu)(shu)出(chu)維(wei)修(xiu)(xiu)(xiu)、電源(yuan)模(mo)塊炸維(wei)修(xiu)(xiu)(xiu)、直流(liu)母線過電壓維(wei)修(xiu)(xiu)(xiu)、直流(liu)母線無輸(shu)(shu)出(chu)維(wei)修(xiu)(xiu)(xiu)、綠燈不(bu)滅維(wei)修(xiu)(xiu)(xiu)、紅燈亮維(wei)修(xiu)(xiu)(xiu)、啟(qi)動電源(yuan)黃燈不(bu)亮、無顯(xian)示(shi)、缺(que)相、不(bu)能啟(qi)動、過流(liu)、過壓、欠壓、過熱、過載(zai)、參數錯誤、有顯(xian)示(shi)無輸(shu)(shu)出(chu)、報(bao)警(jing)(jing)、黃燈不(bu)亮、電源(yuan)跳閘、炸模(mo)塊、可控(kong)硅壞丶(zhu)(zhu)電流(liu)大，溫度報(bao)警(jing)(jing)，溫度傳感器故(gu)障丶(zhu)(zhu)上電壓低、紅色(se)燈亮、輸(shu)(shu)出(chu)不(bu)平衡、不(bu)能啟(qi)動、無顯(xian)示(shi)、開關電源(yuan)損壞、模(mo)塊損壞、接地故(gu)障維(wei)修(xiu)(xiu)(xiu)。