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更新時間:2024-06-12
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西門子6RA70直流控制器上機使用報F007修復解決,直流驅動器,傳動器,變頻器修理銷售廠家
故障方法排除:
1、觀察R015顯示值,380V輸入調速器,正常是在380~400V。
2、更換脈沖觸發電源板
3、更換CUD1控制板
4丶更換勵磁板做測試
工業上有的時候會用到直流調速器,這種設備在使用的過程當中因為某一些原因,經常會有使用不當的情況,直接的影響就是導致直流調速器損壞,那么對于工業使用的直流調速器建議大家還是選擇大廠家進行維修。
如若不能解決您的問題,可以送(song)至恒(heng)稅(shui)電氣進(jin)行維修。
西門子6RA70直流控制器上機使用報F007修復解決,直流驅動器,傳動器,變頻器修理銷售廠家
變(bian)頻器發(fa)生故障診(zhen)斷與(yu)維修方法(fa)
1 變頻器無(wu)輸出電(dian)壓
原因(yin)為:
(1)主回(hui)路不通(tong) 重點(dian)檢查(cha)主回(hui)路通(tong)道中所有開關(guan)、斷路器、接觸器及電力電子器件是(shi)否完(wan)好,導線接頭有無接觸不良(liang)或松脫。
(2)控制回(hui)路接線(xian)錯誤,變頻器未正常起(qi)動以(yi)說明書為依據(ju),認真核對控制回(hui)路接線(xian),找出(chu)錯誤處(chu)并加以(yi)糾正。
2 電動機不能升速
主(zhu)要(yao)原因為:
(1)交(jiao)流電(dian)源(yuan)或變頻(pin)器(qi)(qi)(qi)輸出缺(que)(que)相 電(dian)源(yuan)缺(que)(que)相使變頻(pin)器(qi)(qi)(qi)輸出電(dian)壓降低,變頻(pin)器(qi)(qi)(qi)輸出缺(que)(que)相造成三相電(dian)壓不(bu)(bu)對稱而產生負序轉矩,都(dou)使電(dian)動機(ji)電(dian)磁轉矩變小,不(bu)(bu)能(neng)驅動負載加速(su),應檢查熔(rong)絲有(you)無燒(shao)斷(duan),導線接頭有(you)無松脫斷(duan)路。
(2)頻(pin)(pin)率或電(dian)流設(she)定(ding)值(zhi)(zhi)偏小(xiao) 頻(pin)(pin)率設(she)定(ding)在低值(zhi)(zhi)點上使頻(pin)(pin)率受到(dao)限(xian)制無(wu)法(fa)升高而不能加速(su)。電(dian)流值(zhi)(zhi)設(she)定(ding)偏小(xiao),則產生大轉矩的能力被限(xian)制,使電(dian)動機剩余轉矩過小(xiao)而不能加速(su)。因此,應(ying)檢查頻(pin)(pin)率和電(dian)流設(she)定(ding)值(zhi)(zhi)是否適(shi)當(dang)。若電(dian)流設(she)定(ding)值(zhi)(zhi)已(yi)達(da)變(bian)頻(pin)(pin)器(qi)(qi)的大值(zhi)(zhi),這說明變(bian)頻(pin)(pin)器(qi)(qi)容量偏小(xiao),應(ying)換較大容量變(bian)頻(pin)(pin)器(qi)(qi)。
(3)調速(su)電位器接觸(chu)不良(liang)或相關元件損(sun)壞(huai)頻率給定(ding)值不能升高。
3 轉速不穩定或不能平滑(hua)調節
這種故(gu)障(zhang)一(yi)般是受外界(jie)條件變(bian)化的影響,無(wu)規律且多為短(duan)暫性,主(zhu)要影響源(yuan)為: (1)電源(yuan)電壓不穩定。 (2)負載有較大波動。(3)外界(jie)噪聲干擾使(shi)設定頻率起變(bian)化,可通過(guo)檢(jian)測找到故(gu)障(zhang)點和采(cai)取相應的解決(jue)措施。
4 過電流故障
這是較常見的故(gu)障,可從電(dian)源負載,變頻器振蕩干(gan)擾(rao)等方面找(zhao)原(yuan)因(yin)。
(1)電源電壓超限(xian)或(huo)(huo)缺相 電壓超限(xian)而過(guo)(guo)高或(huo)(huo)過(guo)(guo)低,應按說明書規定的范圍進行調整。無論電源缺相或(huo)(huo)變頻器輸出缺相,都導致電動機轉(zhuan)矩減小而過(guo)(guo)流。
(2)負(fu)載(zai)過重或(huo)負(fu)載(zai)側(ce)短路(lu) 重點檢(jian)查機組無異聲,振動和卡滯(zhi)現(xian)象(xiang),是否因工藝(yi)條件(jian)或(huo)操作方法(fa)改變而造成(cheng)超載(zai)。負(fu)載(zai)側(ce)短路(lu)或(huo)接地.可用兆歐(ou)表進行檢(jian)測。逆變器同一橋臂的(de)兩只晶體管同時(shi)導(dao)通也(ye)形成(cheng)短路(lu)。
(3)變頻器設(she)(she)定(ding)值不(bu)適當 一是電壓(ya)頻率(lv)特性(xing)曲線中(zhong)電壓(ya)提升大于頻率(lv)提升,造成(cheng)低(di)頻高壓(ya)而(er)過(guo)流(liu)。二是加速(su)(su)時(shi)間(jian)設(she)(she)定(ding)過(guo)短,需要加速(su)(su)轉矩過(guo)大而(er)造成(cheng)過(guo)流(liu)。三是減速(su)(su)時(shi)間(jian)設(she)(she)定(ding)過(guo)短,機組迅速(su)(su)再生發電回饋(kui)給中(zhong)間(jian)回路(lu),造成(cheng)中(zhong)間(jian)回路(lu)電壓(ya)過(guo)高和制動回路(lu)過(guo)流(liu)。
(4)振蕩過流(liu) 一(yi)般只(zhi)在(zai)某(mou)轉速(頻(pin)(pin)率(lv))下運行時(shi)發生。主要原因有兩個:一(yi)是(shi)電(dian)(dian)(dian)氣頻(pin)(pin)率(lv)與機械頻(pin)(pin)率(lv)發生共振,二是(shi)純(chun)電(dian)(dian)(dian)氣回路所引起(qi),如功率(lv)開關管的(de)死區控(kong)制時(shi)間,中間直(zhi)流(liu)回路電(dian)(dian)(dian)容電(dian)(dian)(dian)壓的(de)波動(dong),電(dian)(dian)(dian)動(dong)機滯(zhi)后(hou)電(dian)(dian)(dian)流(liu)的(de)影響及外界干擾源(yuan)的(de)干擾等。找出(chu)發生振蕩的(de)頻(pin)(pin)率(lv)范圍后(hou),可(ke)利用跳躍頻(pin)(pin)率(lv)功能回避該共振頻(pin)(pin)率(lv)。
(5)電(dian)流(liu)互感器損壞 其現象表(biao)現為,變頻器主回路送電(dian),當(dang)變頻器未(wei)啟動時,有電(dian)流(liu)顯示且電(dian)流(liu)在變化.這樣可判(pan)斷互感器已損壞。
(6)主(zhu)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)接(jie)口板(ban)(ban)電(dian)(dian)(dian)(dian)流、電(dian)(dian)(dian)(dian)壓檢測通道被(bei)損壞(huai),也會(hui)(hui)出(chu)現過流 電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)板(ban)(ban)損壞(huai)可能是:①由于(yu)環境太差,導電(dian)(dian)(dian)(dian)性(xing)固體(ti)顆粒(li)附著(zhu)在(zai)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)板(ban)(ban)上,造(zao)成(cheng)(cheng)靜電(dian)(dian)(dian)(dian)損壞(huai)。或者有腐(fu)蝕性(xing)氣體(ti),使電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)被(bei)腐(fu)蝕。②電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)板(ban)(ban)的零電(dian)(dian)(dian)(dian)位(wei)與(yu)機(ji)殼(ke)連在(zai)一(yi)起(qi),由于(yu)柜體(ti)與(yu)地角焊接(jie)時,強大的電(dian)(dian)(dian)(dian)弧,會(hui)(hui)影(ying)響電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)板(ban)(ban)的性(xing)能。③由于(yu)接(jie)地不良,電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)板(ban)(ban)的零伏(fu)受干擾,也會(hui)(hui)造(zao)成(cheng)(cheng)電(dian)(dian)(dian)(dian)路(lu)(lu)(lu)板(ban)(ban)損壞(huai)。
(7)由(you)于連(lian)接插件不緊、不牢(lao) 例如電(dian)流或電(dian)壓反饋信號線接觸不良,會出現過流故障時有時無(wu)的現象。
(8)生產機械(xie)廠家設計的(de)(de)電(dian)(dian)(dian)(dian)氣部分有缺陷,例如變頻器(qi)(qi)(qi)的(de)(de)U、V、W三個輸(shu)出端(duan)不是(shi)(shi)直接連接到(dao)電(dian)(dian)(dian)(dian)動(dong)機,而是(shi)(shi)中(zhong)間(jian)(jian)增(zeng)增(zeng)加了一套繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)控(kong)制。由變頻器(qi)(qi)(qi)輸(shu)出的(de)(de)三相交流電(dian)(dian)(dian)(dian)源(yuan)輸(shu)送(song)到(dao)繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi),然(ran)后又(you)由繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)輸(shu)送(song)到(dao)電(dian)(dian)(dian)(dian)動(dong)機,造成的(de)(de)后果是(shi)(shi),啟動(dong)按(an)鈕(niu)按(an)下(xia)后,變頻器(qi)(qi)(qi)馬上(shang)得電(dian)(dian)(dian)(dian)投入運(yun)行,并按(an)各功能參數之設定(ding)運(yun)行,輸(shu)出電(dian)(dian)(dian)(dian)壓也是(shi)(shi)馬上(shang)獲得,幾乎沒有時間(jian)(jian)差,而輸(shu)出電(dian)(dian)(dian)(dian)壓要經過繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)(qi)(qi)的(de)(de)吸(xi)合時間(jian)(jian)延誤,就相當于變頻器(qi)(qi)(qi)不是(shi)(shi)使(shi)電(dian)(dian)(dian)(dian)動(dong)機逐漸(jian)加速(su),而是(shi)(shi)直接全(quan)壓使(shi)電(dian)(dian)(dian)(dian)機高速(su)起動(dong),起動(dong)時加速(su)時間(jian)(jian)內過電(dian)(dian)(dian)(dian)流也是(shi)(shi)自(zi)然(ran)而然(ran)的(de)(de)事。