do801

do801

變頻器常見故障及處理方法包括：電源故障：檢查電源線是否接觸良好；控制器故障：檢查控制器是否正常工作；傳感器故障：檢查傳感器是否正常工作；輸出模塊故障：檢查輸出模塊是否正常工作；軟件故障：檢查軟件是否正常工作等等。

　　除此之外，變頻器在使用中還有以下這些故障現(xiàn)象

　?。?）故障P.OFF

　　變頻器上電顯示P.OFF延時1~2s后顯示0，表示變頻器處于待機(jī)狀態(tài)。在應(yīng)用中若出現(xiàn)變頻器上電后一直顯示P.OFF而不跳0現(xiàn)象，主要原因有輸入電壓過低、輸入電源缺相及變頻器電壓檢測電路故障，處理時應(yīng)先測量電源三相輸入電壓，R、S、T端子正常電壓為三相380V，如果輸入電壓低于320V或輸入電源缺相，則應(yīng)排除外部電源故障。

　?。?）故障ER08

　　變頻器出現(xiàn)ER08故障代碼表示變頻器處于欠壓故障狀態(tài)。主要原因有輸入電源過低或缺相、變頻器內(nèi)部電壓檢測電路異常、變頻器主電路異常。通用變頻器電壓輸入范圍在320V~460V，在實(shí)際應(yīng)用中變頻器滿載運(yùn)行時，當(dāng)輸入電壓低于340V時可能會出現(xiàn)欠壓保護(hù)，這時應(yīng)提高電網(wǎng)輸入電壓或變頻器降額使用。

　?。?）故障ER02/ER05

　　故障代碼ER02/ER05表示變頻器在減速中出現(xiàn)過流或過壓故障，主要原因為減速時間過短、負(fù)載回饋能量過大未能及時被釋放。

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