AB PLC 1746-IB32
還有一臺(tái)變頻器(mm4-22kw)，上電顯示正常，一給運(yùn)行信號(hào)就出現(xiàn)[p----]或[-----]，經(jīng)過仔細(xì)觀察，
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發(fā)現(xiàn)風(fēng)扇的轉(zhuǎn)速有些不正常，把風(fēng)扇拔
AB PLC 1746-IB32
掉又會(huì)顯示[f0030]，在維修的過程中有時(shí)報(bào)警較亂，還出現(xiàn)過[f0021\f0001\a0501]等。在我先給了運(yùn)行信號(hào)然后再把風(fēng)扇接上去就不出現(xiàn)[p----]，但是，
AB PLC 1746-IB32
接上一個(gè)風(fēng)扇時(shí)，風(fēng)扇的轉(zhuǎn)速是正常的，輸出三相也正常，第二個(gè)風(fēng)扇再接上時(shí)風(fēng)扇的轉(zhuǎn)速明顯不正常。于是我分析問題在電源板上。結(jié)果是開關(guān)電源出來的一路供電濾波電容漏電造成的，換上一個(gè)同樣的電容問題就解決了
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