西門子直流調速器6RA7087顯示報警F067維修

 西門子6ra70直(zhi)流(liu)調速器報一下故障(zhang)(zhang)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)：F001電(dian)(dian)(dian)(dian)(dian)子板(ban)電(dian)(dian)(dian)(dian)(dian)源(yuan)故障(zhang)(zhang)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu) F004 電(dian)(dian)(dian)(dian)(dian)樞(shu)電(dian)(dian)(dian)(dian)(dian)源(yuan)板(ban)缺相故障(zhang)(zhang)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)  F005勵(li)磁板(ban)故障(zhang)(zhang)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)   F006 欠(qian)電(dian)(dian)(dian)(dian)(dian)壓(ya)故障(zhang)(zhang)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),F007 過電(dian)(dian)(dian)(dian)(dian)壓(ya)故障(zhang)(zhang) 維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu) F008 F009 進(jin)線電(dian)(dian)(dian)(dian)(dian)源(yuan)頻率故障(zhang)(zhang)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)  F011 GSST1 電(dian)(dian)(dian)(dian)(dian)報故障(zhang)(zhang)三(san)相不(bu)平衡維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)，無輸出維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)，開機(ji)無顯(xian)示維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)，啟動無勵(li)磁電(dian)(dian)(dian)(dian)(dian)壓(ya)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)，上(shang)電(dian)(dian)(dian)(dian)(dian)跳閘(zha)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)，通電(dian)(dian)(dian)(dian)(dian)燒可(ke)控(kong)硅(gui)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)，運行模塊炸，速度(du)不(bu)可(ke)控(kong)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu),主板(ban)故障(zhang)(zhang)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)，控(kong)制板(ban)壞維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)，轉(zhuan)速不(bu)正常維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)，開不(bu)了機(ji)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)，過流(liu)，過壓(ya)，過熱，速度(du)不(bu)穩, 電(dian)(dian)(dian)(dian)(dian)機(ji)抖(dou)動，低速不(bu)穩，高速飛車維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)，電(dian)(dian)(dian)(dian)(dian)機(ji)不(bu)轉(zhuan)等故障(zhang)(zhang)維(wei)(wei)(wei)(wei)(wei)修(xiu)(xiu)(xiu)。

 因此，以控(kong)制(zhi)頻(pin)(pin)率(lv)(lv)為(wei)目的(de)的(de)變(bian)(bian)頻(pin)(pin)器，是作(zuo)為(wei)電(dian)(dian)機(ji)(ji)(ji)調速設(she)備的(de)優選設(she)備。n=60f/p（n：同(tong)(tong)步速度，f：電(dian)(dian)源頻(pin)(pin)率(lv)(lv)，p：電(dian)(dian)機(ji)(ji)(ji)極數）。改變(bian)(bian)頻(pin)(pin)率(lv)(lv)和(he)電(dian)(dian)壓(ya)是優的(de)電(dian)(dian)機(ji)(ji)(ji)控(kong)制(zhi)方(fang)法(fa)，如果僅(jin)改變(bian)(bian)頻(pin)(pin)率(lv)(lv)，電(dian)(dian)機(ji)(ji)(ji)將被燒(shao)壞。特別是當(dang)頻(pin)(pin)率(lv)(lv)降低時(shi)，該(gai)問(wen)題就非常(chang)突出。為(wei)了防止(zhi)電(dian)(dian)機(ji)(ji)(ji)燒(shao)毀事故的(de)發生，變(bian)(bian)頻(pin)(pin)器在改變(bian)(bian)頻(pin)(pin)率(lv)(lv)的(de)同(tong)(tong)時(shi)必須要同(tong)(tong)時(shi)改變(bian)(bian)電(dian)(dian)壓(ya)。
例如：為了使電(dian)機的(de)旋轉(zhuan)速度減半，變(bian)頻(pin)(pin)器(qi)的(de)輸出頻(pin)(pin)率(lv)必須從(cong)60Hz改變(bian)到(dao)30Hz，這時變(bian)頻(pin)(pin)器(qi)的(de)輸出電(dian)壓(ya)就必須從(cong)200V改變(bian)到(dao)約(yue)100V。
一、大容量(liang)電解電容老化所表現出的故障現象及檢修思路(lu)：
[故障實例1]一臺富士5000G9型90kW變(bian)頻器(qi)，運(yun)行中跳欠電(dian)壓(ya)故障。該變(bian)頻器(qi)連續工作已近十年，西門子直流調速器6RA7087顯示報警F067維修接手(shou)后，先用電(dian)(dian)容表(biao)測(ce)(ce)(ce)試直(zhi)(zhi)(zhi)流(liu)回路(lu)儲能電(dian)(dian)容的容量，儲能電(dian)(dian)容共6只，每只電(dian)(dian)容量為(wei)8200uF，檢(jian)測(ce)(ce)(ce)其容量為(wei)8000-8300uF之間，感覺電(dian)(dian)容都沒有問題。從調壓器送入可調三相電(dian)(dian)源(yuan)，檢(jian)查(cha)電(dian)(dian)壓檢(jian)測(ce)(ce)(ce)電(dian)(dian)路(lu)并(bing)監測(ce)(ce)(ce)面板顯示直(zhi)(zhi)(zhi)流(liu)電(dian)(dian)壓值，說明(ming)直(zhi)(zhi)(zhi)流(liu)電(dian)(dian)壓檢(jian)測(ce)(ce)(ce)電(dian)(dian)路(lu)也沒有問題。測(ce)(ce)(ce)直(zhi)(zhi)(zhi)流(liu)回路(lu)電(dian)(dian)壓，在輸(shu)入電(dian)(dian)壓為(wei)380V時，直(zhi)(zhi)(zhi)流(liu)電(dian)(dian)壓為(wei)540V左右(you)（輕載），檢(jian)查(cha)不出問題所在。
將變(bian)頻(pin)器拖動(dong)37kW電(dian)(dian)機，滿載(zai)運(yun)行，未路欠(qian)電(dian)(dian)壓(ya)故(gu)障。還(huan)是感(gan)覺不放(fang)心，后來(lai)又找(zhao)一個工廠，用(yong)變(bian)頻(pin)器拖動(dong)75kW電(dian)(dian)機，滿載(zai)運(yun)行，跳欠(qian)電(dian)(dian)壓(ya)故(gu)障停機，運(yun)行中檢測直流(liu)回(hui)路電(dian)(dian)壓(ya)，已跌至(zhi)430V。變(bian)頻(pin)器確實存在故(gu)障！