廠商性質：經銷商

所在地：上海市

更新時(shi)間：2024-06-11

產品簡介：

西門子840DSL系統報F7410驅動器壞故障分析處理；

有可能的原因是：

1、電(dian)機沒有連(lian)上或電(dian)機接觸器打開

2、沒(mei)有直流母線電壓（r70）

3、電機模塊損壞

4丶功率模塊壞，

當(dang)變(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)器(qi)(qi)拖(tuo)(tuo)動(dong)大慣性負載(zai)時，其減速時間設(she)的(de)比較小(xiao)，在(zai)減速過程中，變(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)器(qi)(qi)輸出的(de)速度比較快，而(er)負載(zai)靠本身阻力減速比較慢，使(shi)負載(zai)拖(tuo)(tuo)動(dong)電(dian)(dian)動(dong)機(ji)的(de)轉(zhuan)速比變(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)器(qi)(qi)輸出的(de)頻(pin)(pin)(pin)(pin)率(lv)所對應的(de)轉(zhuan)速還要高，電(dian)(dian)動(dong)機(ji)處于(yu)(yu)(yu)發電(dian)(dian)狀態(tai)，而(er)變(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)器(qi)(qi)沒有能(neng)(neng)量(liang)(liang)(liang)(liang)回(hui)(hui)饋(kui)(kui)單(dan)元(yuan)(yuan)，因而(er)變(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)器(qi)(qi)支流(liu)直流(liu)回(hui)(hui)路電(dian)(dian)壓(ya)升高，超出保(bao)護(hu)值，出現故障，而(er)紙機(ji)中經常(chang)發生(sheng)(sheng)在(zai)干燥(zao)部分(fen)，處理(li)這種(zhong)故障可(ke)(ke)以增加再(zai)(zai)生(sheng)(sheng)制(zhi)動(dong)單(dan)元(yuan)(yuan)，或者修改變(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)器(qi)(qi)參數，把變(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)器(qi)(qi)減速時間設(she)的(de)長一些。增加再(zai)(zai)生(sheng)(sheng)制(zhi)動(dong)單(dan)元(yuan)(yuan)功(gong)能(neng)(neng)包括能(neng)(neng)量(liang)(liang)(liang)(liang)消(xiao)耗型(xing)(xing)(xing)(xing)，并聯(lian)直流(liu)母線(xian)吸(xi)(xi)收(shou)型(xing)(xing)(xing)(xing)、能(neng)(neng)量(liang)(liang)(liang)(liang)回(hui)(hui)饋(kui)(kui)型(xing)(xing)(xing)(xing)。能(neng)(neng)量(liang)(liang)(liang)(liang)消(xiao)耗型(xing)(xing)(xing)(xing)在(zai)變(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)器(qi)(qi)直流(liu)回(hui)(hui)路中并聯(lian)一個制(zhi)動(dong)電(dian)(dian)阻，通過檢(jian)測直流(liu)母線(xian)電(dian)(dian)壓(ya)來控(kong)制(zhi)功(gong)率(lv)管的(de)通斷。并聯(lian)直流(liu)母線(xian)吸(xi)(xi)收(shou)型(xing)(xing)(xing)(xing)使(shi)用在(zai)多電(dian)(dian)機(ji)傳動(dong)系統，這種(zhong)系統往往有一臺(tai)或幾臺(tai)電(dian)(dian)機(ji)經常(chang)工作(zuo)于(yu)(yu)(yu)發電(dian)(dian)狀態(tai)，產生(sheng)(sheng)再(zai)(zai)生(sheng)(sheng)能(neng)(neng)量(liang)(liang)(liang)(liang)，這些能(neng)(neng)量(liang)(liang)(liang)(liang)通過并聯(lian)母線(xian)被處于(yu)(yu)(yu)電(dian)(dian)動(dong)狀態(tai)的(de)電(dian)(dian)機(ji)吸(xi)(xi)收(shou)。能(neng)(neng)量(liang)(liang)(liang)(liang)回(hui)(hui)饋(kui)(kui)型(xing)(xing)(xing)(xing)的(de)變(bian)(bian)(bian)頻(pin)(pin)(pin)(pin)器(qi)(qi)網側變(bian)(bian)(bian)流(liu)器(qi)(qi)是(shi)可(ke)(ke)逆(ni)的(de)，當(dang)有再(zai)(zai)生(sheng)(sheng)能(neng)(neng)量(liang)(liang)(liang)(liang)產生(sheng)(sheng)時可(ke)(ke)逆(ni)變(bian)(bian)(bian)流(liu)器(qi)(qi)就(jiu)將再(zai)(zai)生(sheng)(sheng)能(neng)(neng)量(liang)(liang)(liang)(liang)回(hui)(hui)饋(kui)(kui)給電(dian)(dian)網。

　　（2）多個電動(dong)(dong)(dong)(dong)施動(dong)(dong)(dong)(dong)同一(yi)個負載時，也可能出現(xian)這一(yi)故(gu)障，主要(yao)由于(yu)(yu)沒(mei)有(you)負荷(he)分(fen)配引(yin)起(qi)的(de)。以(yi)兩臺(tai)電動(dong)(dong)(dong)(dong)機(ji)拖動(dong)(dong)(dong)(dong)一(yi)個負載為例，當(dang)一(yi)臺(tai)電動(dong)(dong)(dong)(dong)機(ji)的(de)實際轉(zhuan)速大于(yu)(yu)另一(yi)臺(tai)電動(dong)(dong)(dong)(dong)機(ji)的(de)同步轉(zhuan)速時，則轉(zhuan)速高的(de)電動(dong)(dong)(dong)(dong)機(ji)相當(dang)于(yu)(yu)原動(dong)(dong)(dong)(dong)機(ji)，轉(zhuan)速低的(de)處(chu)于(yu)(yu)發電狀態(tai)，引(yin)起(qi)故(gu)障。在(zai)紙機(ji)經常(chang)發生(sheng)在(zai)榨部及網部，處(chu)理(li)時需加負荷(he)分(fen)配控(kong)制。可以(yi)把處(chu)于(yu)(yu)紙機(ji)傳動(dong)(dong)(dong)(dong)速度鏈(lian)分(fen)支的(de)變(bian)頻器特(te)性調節軟一(yi)些。

　　三、過(guo)(guo)流故(gu)障(zhang)過(guo)(guo)流故(gu)障(zhang)可(ke)分(fen)為(wei)加(jia)速、減(jian)速、恒速過(guo)(guo)電(dian)流。其(qi)可(ke)能(neng)是(shi)由于變(bian)頻(pin)器(qi)的加(jia)減(jian)速時間(jian)太短、負(fu)載(zai)發生突(tu)變(bian)、負(fu)荷分(fen)配不均，輸出短路等原(yuan)因引起的。這時一般(ban)可(ke)通過(guo)(guo)延長加(jia)減(jian)速時間(jian)、減(jian)少負(fu)荷的突(tu)變(bian)、外加(jia)能(neng)耗制動元(yuan)件、進行負(fu)荷分(fen)配設(she)計、對線(xian)路進行檢查。如果斷開負(fu)載(zai)變(bian)頻(pin)器(qi)還是(shi)過(guo)(guo)流故(gu)障(zhang)，說(shuo)明變(bian)頻(pin)器(qi)逆變(bian)電(dian)路已環，需要更(geng)換變(bian)頻(pin)器(qi)。

　　四、過載故障過載故障包括變頻過載和(he)電(dian)機(ji)過載。其(qi)可(ke)能(neng)(neng)是(shi)加速時(shi)間(jian)太(tai)(tai)短，直(zhi)流制動量過大(da)、電(dian)網電(dian)壓(ya)太(tai)(tai)低、負(fu)載過重(zhong)等(deng)原(yuan)因引起的。一般可(ke)通過延長(chang)加速時(shi)間(jian)、延長(chang)制動時(shi)間(jian)、檢(jian)查電(dian)網電(dian)壓(ya)等(deng)。負(fu)載過重(zhong)，所選的電(dian)機(ji)和(he)變頻器不能(neng)(neng)拖動該(gai)負(fu)載，也可(ke)能(neng)(neng)是(shi)由于機(ji)械潤滑不好引起。如前者則必須更換大(da)功率(lv)的電(dian)機(ji)和(he)變頻器；如后者則要(yao)對生產機(ji)械進行(xing)檢(jian)修。

西門子840DSL系統報F7410驅動器壞故障分析處理；