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AMAT 70318697000輸入溝通電源過(guò)壓
種狀況是指輸入電壓逾越正慣例模，通常發(fā)作在節(jié)假日負(fù)載較輕，電壓添加或下降

而線路呈現(xiàn)毛病，此刻最好斷開電源，查看、處理。
2、發(fā)電類過(guò)電壓
這種狀況呈現(xiàn)的概率較高，首要是電機(jī)的同步轉(zhuǎn)速比實(shí)踐轉(zhuǎn)速還高，使電動(dòng)機(jī)處于

發(fā)電狀況，而變頻器又沒(méi)有設(shè)備制動(dòng)單元，有兩起狀況能夠致使這一毛病。
AMAT 70318697000當(dāng)變頻器拖動(dòng)大慣性負(fù)載時(shí)，其減速時(shí)刻設(shè)的對(duì)比小，在減速進(jìn)程中，變頻器輸

出的速度對(duì)比快，而負(fù)載靠本身阻力減速對(duì)比慢，使負(fù)載拖動(dòng)電動(dòng)機(jī)的轉(zhuǎn)速比變頻

器輸出的頻率所對(duì)應(yīng)的轉(zhuǎn)速還要高，電動(dòng)機(jī)處于發(fā)電狀況，而變頻器沒(méi)有能量回饋

單元，因而變頻器支流直流回路電壓添加，超出維護(hù)值，呈現(xiàn)毛病，而紙機(jī)中常常

發(fā)作在枯燥有些，處理這種毛病能夠添加再生制動(dòng)單元，或許修正動(dòng)頻器參數(shù)，把

變頻器減速時(shí)刻設(shè)的長(zhǎng)一些。添加再生制動(dòng)單元功用包含能量耗費(fèi)型，并聯(lián)直流母

線吸收型、能量回饋型。能量耗費(fèi)型在變頻器直流回路中并聯(lián)一個(gè)制動(dòng)電阻，經(jīng)過(guò)

查看直流母線電壓來(lái)操控功率管的通斷。并聯(lián)直流母線吸收型運(yùn)用在多電機(jī)傳動(dòng)系

統(tǒng)，這種體系通常有一臺(tái)或幾臺(tái)電機(jī)常常作業(yè)于發(fā)電狀況，發(fā)作再生能量，這些能

量經(jīng)過(guò)并聯(lián)母線被處于電動(dòng)狀況的電機(jī)吸收。能量回饋型的變頻器網(wǎng)側(cè)變流器是可

逆的，當(dāng)有再生能量發(fā)作時(shí)可逆變流器就將再生能量回饋給電網(wǎng)。

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