變頻(pin)器(qi)MDX61B0450-503-4-0T

變頻器(qi)MDX61B0450-503-4-0T

中(zhong)海(hai)德（福建）工(gong)業設(she)備有限公(gong)司是一家綜合性貿(mao)易公(gong)司，從(cong)事歐美(mei)工業(ye)自動化設備及(ji)配件。主要經(jing)營來自歐洲，美(mei)國，日本等國電氣、液(ye)壓、機械傳動、儀器儀表、工具(ju)等。主要(yao)有 SEW，AB，ABB，施耐德，泰(tai)道，西門子，霍尼韋爾，力士樂(le)，MOOG，SMC等。主營產品(pin)(pin)有從事國(guo)外的工(gong)控自動化產品(pin)(pin)進出口(kou)貿易，主要(yao)經營歐美傳感器，編(bian)碼器，泵(beng)閥，電機伺(si)服，過濾設備等。

中(zhong)海德(de)（福建(jian)）工業設備有(you)限公(gong)司(si)  

聯系人：田小華

電話(hua)：0591-86290139微(wei)信同號

手機：18050188551

qq: 2881506989

公(gong)司(si)地址：福州(zhou)市高新區(qu)烏龍江大(da)道正榮(rong)財富(fu)中心SOHO3號樓8層(ceng)中海德公司

公司官網(wang)：

過壓類故障

變(bian)頻器的過(guo)電壓集中(zhong)表現在直流(liu)母(mu)線(xian)的支(zhi)流(liu)電壓上。正常(chang)情況下(xia)，變(bian)頻器直流(liu)電為(wei)三相:全(quan)波整流后的(de)平(ping)均值(zhi)。若以380V線電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)計算(suan)，則平(ping)均直(zhi)流電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)Ud=1.35 U線=513V。 在過(guo)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)發生時(shi)，直(zhi)流母線的(de)儲能電(dian)(dian)(dian)(dian)容將(jiang)被充電(dian)(dian)(dian)(dian)，當電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)上至760V左(zuo)右時(shi)，變頻器(qi)(qi)過(guo)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)保護動作(zuo)。因此，變頻器(qi)(qi)來說，都有(you)一(yi)個正常的(de)工作(zuo)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)范圍,當電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)超過(guo)這個范圍時(shi)很可能損壞(huai)變頻器(qi)(qi)，常見的(de)過(guo)電(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)有(you)兩類。

1、輸入交流電源(yuan)過壓

這種情況是指輸入電(dian)壓(ya)超過正常范圍，一(yi)般發生在(zai)節假(jia)日負載較輕，電(dian)壓(ya)升(sheng)高或降低(di)而(er)線路出(chu)現故障，此時(shi)好斷開電(dian)源，檢查、處理。

2、發電類過(guo)電壓(ya)故障

這(zhe)種情況出現的(de)概率較高，主要是電(dian)機的(de)同步(bu)轉速比實際轉速還高，使(shi)電(dian)動(dong)機處于發電(dian)狀態，而變(bian)頻器又沒有(you)(you)安裝制動(dong)單(dan)元(yuan)，有(you)(you)兩起(qi)情況可以引(yin)起(qi)這(zhe)一故障。

(1)當變(bian)(bian)頻(pin)(pin)(pin)(pin)器拖動(dong)大慣性負(fu)載(zai)時(shi)(shi)，其(qi)減(jian)速(su)時(shi)(shi)間設(she)(she)的(de)比(bi)較小，在(zai)減(jian)速(su)過程中，變(bian)(bian)頻(pin)(pin)(pin)(pin)器輸(shu)出(chu)的(de)速(su)度比(bi)較快，而負(fu)載(zai)靠(kao)本(ben)身阻力減(jian)速(su)比(bi)較慢，使(shi)負(fu)載(zai)拖動(dong)電(dian)(dian)(dian)動(dong)機(ji)(ji)的(de)轉速(su)比(bi)變(bian)(bian)頻(pin)(pin)(pin)(pin)器輸(shu)出(chu)的(de)頻(pin)(pin)(pin)(pin)率(lv)所對應(ying)的(de)轉速(su)還要高，電(dian)(dian)(dian)動(dong)機(ji)(ji)處(chu)(chu)于發電(dian)(dian)(dian)狀(zhuang)態(tai)，而變(bian)(bian)頻(pin)(pin)(pin)(pin)器沒有(you)能(neng)(neng)量回饋(kui)單(dan)元，因而變(bian)(bian)頻(pin)(pin)(pin)(pin)器支流直(zhi)流回路電(dian)(dian)(dian)壓(ya)升(sheng)高，超出(chu)保護值，出(chu)現故(gu)障，而中經常(chang)發生(sheng)在(zai)干燥(zao)部分，處(chu)(chu)理這種故(gu)障可以增(zeng)加再(zai)生(sheng)制(zhi)動(dong)單(dan)元，或者修(xiu)改變(bian)(bian)頻(pin)(pin)(pin)(pin)器參數(shu),把變(bian)(bian)頻(pin)(pin)(pin)(pin)器減(jian)速(su)時(shi)(shi)間設(she)(she)的(de)長--些(xie)。增(zeng)加再(zai)生(sheng)制(zhi)動(dong)單(dan)元功能(neng)(neng)包括能(neng)(neng)量消(xiao)耗(hao)型(xing)(xing)，并(bing)聯(lian)直(zhi)流母(mu)(mu)線吸(xi)收型(xing)(xing)、能(neng)(neng)量回饋(kui)型(xing)(xing)。能(neng)(neng)量消(xiao)耗(hao)型(xing)(xing)在(zai)變(bian)(bian)頻(pin)(pin)(pin)(pin)器直(zhi)流回路中并(bing)聯(lian)一-個(ge)制(zhi)動(dong)電(dian)(dian)(dian)阻，通過檢測直(zhi)流母(mu)(mu)線電(dian)(dian)(dian)壓(ya)來控制(zhi)功率(lv)管(guan)的(de)通斷。并(bing)聯(lian)直(zhi)流母(mu)(mu)線吸(xi)收型(xing)(xing)使(shi)用在(zai)多電(dian)(dian)(dian)機(ji)(ji)傳動(dong)系統，這種系統往往有(you)一.臺(tai)或幾(ji)機(ji)(ji)經常(chang)工(gong)作于發電(dian)(dian)(dian)狀(zhuang)態(tai)，產生(sheng)再(zai)生(sheng)能(neng)(neng)量，這些(xie)能(neng)(neng)量通過并(bing)聯(lian)母(mu)(mu)線被處(chu)(chu)于電(dian)(dian)(dian)動(dong)狀(zhuang)態(tai)的(de)電(dian)(dian)(dian)機(ji)(ji)吸(xi)收。能(neng)(neng)量回饋(kui)型(xing)(xing)的(de)變(bian)(bian)頻(pin)(pin)(pin)(pin)器網(wang)側變(bian)(bian)流器是可逆(ni)的(de)，當有(you)再(zai)生(sheng)能(neng)(neng)量產生(sheng)時(shi)(shi)可逆(ni)變(bian)(bian)流器就將再(zai)生(sheng)能(neng)(neng)量回饋(kui)給電(dian)(dian)(dian)網(wang)。

(2)多(duo)個電(dian)(dian)動施動同一個負載(zai)時，也可(ke)能出現(xian)這一.故障(zhang)(zhang)， 主(zhu)要(yao)由于(yu)沒有負荷(he)分(fen)(fen)配引(yin)起(qi)的(de)(de)。以兩臺電(dian)(dian)動機(ji)拖(tuo)動-一個 負載(zai)為例，當一臺電(dian)(dian)動機(ji)的(de)(de)實(shi)際轉(zhuan)速(su)(su)大于(yu)另一臺電(dian)(dian)動機(ji)的(de)(de)同步轉(zhuan)速(su)(su)時，則(ze)轉(zhuan)速(su)(su)高的(de)(de)電(dian)(dian)動機(ji)相當于(yu)原動機(ji)，轉(zhuan)速(su)(su)低的(de)(de)處(chu)于(yu)發(fa)(fa)電(dian)(dian)狀態，引(yin)起(qi)故障(zhang)(zhang)。在(zai)紙機(ji)經常發(fa)(fa)生在(zai)榨部及網部，處(chu)理時需加負荷(he)分(fen)(fen)配控制(zhi)。可(ke)以把處(chu)于(yu)紙機(ji)傳動速(su)(su)度鏈(lian)分(fen)(fen)支的(de)(de)變頻(pin)器(qi)特性調節軟(ruan)一些。

MPR51A015-503-00

MPR51A015-63-00

MPR51A015-563-00

MPR51A020-503-00

MPR51A024-503-00

MPR51A025-503-00

MPR51A030-503-00

MPR51A040-503-00

MPR51A045-503-00

MPR51A050-503-00

MPR51A060-503-00

MPR51A065-503-00

MPR51A0100-503-00

MPR51A0150-503-00

MPR51A0200-503-00

MPR51A0300-503-00

MPR51A01007-503-00