A16B-2201-0922

A16B-2201-0922

變頻器通電無(wú)顯示故障的原因與解決方法

變頻器上電無(wú)顯示原因的故障通常發(fā)生在三個(gè)模塊上：一是接觸器;二是變頻器的控制面板;三是給控制面板供電的電源模塊。

故障檢測(cè)一：變頻器通電的瞬間，正常情況下有接觸器吸合的聲音，如果沒(méi)有這種聲音，則可能是接觸器壞了。

解決方法：更換新的接觸器。

故障檢測(cè)二：如果接觸器無(wú)問(wèn)題，則檢測(cè)電源模塊是否有問(wèn)題，如果變頻器高壓供電LED燈亮，說(shuō)明高壓直流供電正常。檢測(cè)低壓直流供電沒(méi)有直流電壓，這是開(kāi)關(guān)電源不工作的現(xiàn)象。開(kāi)關(guān)電源電源不工作相當(dāng)于開(kāi)關(guān)管不工作，檢測(cè)直流電壓沒(méi)有送過(guò)來(lái)，則是連接高壓直流電端與脈沖變壓器初級(jí)端之間降壓電阻損壞開(kāi)路，進(jìn)而導(dǎo)致高壓直流電未加到脈沖變壓器的初級(jí)繞組上。開(kāi)關(guān)電源無(wú)法工作，整個(gè)變頻器無(wú)低壓直流供電，出現(xiàn)無(wú)顯示故障。

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