描述
1、在調試過程中出現(xiàn)起動報缺相故障,軟起動器故障燈亮,電機沒反應。出現(xiàn)故障的原因可能是:
(1)起動方式采用帶電方式時,操作順序有誤(正確操作順序應為先送主電源,后送控制電源)。
(2)電源缺相,軟起動器保護動作(檢查電源)
(3)軟起動器的輸出端未接負載(輸出端接上負載后軟起動器才能正常工作)
2、用戶在使用過程中出現(xiàn)起動完畢,旁路接觸器不吸合現(xiàn)象。故障原因可能是:
(1)在起動過程中,保護裝置因整定偏小出現(xiàn)誤動作。(將保護裝置重新整定即可)
(2)在調試時,軟起動器的參數(shù)設置不合理。(主要針對的是55KW以下的軟起動器,對軟起動器的參數(shù)重新設置)
(3)控制線路接觸不良(檢查控制線路)
3、用戶在起動過程中,偶爾有出現(xiàn)跳空氣開關的現(xiàn)象。故障原因有:
(1)空氣開關長延時的整定值過小或者是空氣開關選型和電機不配。(空氣開關的參數(shù)適量放大或者空氣開關重新選型)
(2)軟起動器的起始電壓參數(shù)設置過高或者起動時間過長。(根據(jù)負載情況將起始電壓適當調小或者起動時間適當縮短。)
(3)在起動過程中因電網(wǎng)電壓波動比較大,易引起軟起動器發(fā)出錯誤指令。出現(xiàn)提前旁路現(xiàn)象。(建議用戶不要同時起動大功率的電機,)(4)起動時滿負載起動(起動時盡量減輕負載)
4、用戶在使用軟起動器時出現(xiàn)顯示屏無顯示或者是出現(xiàn)亂碼,軟起動器不工作。故障原因可能是:
(1)軟起動器在使用過程中因外部元件所產(chǎn)生的震動使軟起動器內(nèi)部連線震松(打開軟起動器的面蓋將顯示屏連線重新插緊即可)
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