產(chǎn)品詳情
過(guò)電流跳閘的原因分析 ：
?。?）重新起動(dòng)時(shí)，一升速就跳閘。這是過(guò)電流十分嚴(yán)重的表現(xiàn)。
主要原因有：
1）負(fù)載側(cè)短路
2）工作機(jī)械卡住
3）逆變管損壞
4）電動(dòng)機(jī)的起動(dòng)轉(zhuǎn)矩過(guò)小，拖動(dòng)系統(tǒng)轉(zhuǎn)不起來(lái)
重新起動(dòng)時(shí)并不立即跳閘，而是在運(yùn)行過(guò)程中跳閘
可能的原因有：
1）升速時(shí)間設(shè)定太短
2）降速時(shí)間設(shè)定太短
3）轉(zhuǎn)矩補(bǔ)償設(shè)定較大，引起低速時(shí)空載電流過(guò)大
4）電子熱繼電器整定不當(dāng)，動(dòng)作電流設(shè)定得太小，引起誤動(dòng)作電壓跳閘的原因分析
過(guò)電壓跳閘，主要原因有：
1）電源電壓過(guò)高
2）降速時(shí)間設(shè)定太短
3）降速過(guò)程中，再生制動(dòng)的放電單元工作不理想
a.來(lái)不及放電，應(yīng)增加外接制動(dòng)電阻和制動(dòng)單元
b.放電支路發(fā)生故障,實(shí)際并不放電
欠電壓跳閘,可能的原因有
1) 電源電壓過(guò)低
2) 電源斷相
3) 整流橋故障
電動(dòng)機(jī)不轉(zhuǎn)的原因分析：
功能預(yù)置不當(dāng)
1)上限頻率與最高頻率或基本頻率和最高頻率設(shè)定矛盾
2)使用外接給定時(shí),未對(duì)鍵盤(pán)給定外接給定的選擇進(jìn)行預(yù)置
3)其他的不合理預(yù)置
4)在使用外接給定時(shí),無(wú)起動(dòng)信號(hào)
其它原因：
1)機(jī)械有卡住現(xiàn)象
2)電動(dòng)機(jī)的起動(dòng)轉(zhuǎn)矩不夠
3)變頻器的電路故障
專(zhuān)業(yè)維修變頻器、直流調(diào)速器、軟起動(dòng)器、伺服電源、交直流伺服驅(qū)動(dòng)器、PLC、控制器、觸摸屏顯示器、測(cè)試儀、各種工業(yè)電源、（UPS）電源及工業(yè)傳感器等。維修的設(shè)備不區(qū)分品牌，對(duì)已過(guò)保修期的設(shè)備可提供維修。
（ 以下型號(hào)設(shè)備我公司均有測(cè)試臺(tái)可完全實(shí)現(xiàn)加負(fù)載實(shí)驗(yàn)，將避免故障設(shè)備修復(fù)后反復(fù)回現(xiàn)場(chǎng)測(cè)試，可保證修復(fù)質(zhì)量。
聯(lián)系人：李春梅 電話;010-80843905
QQ：3081088119 手機(jī)：15030670296
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