E6，E7故障對(duì)于廣大用戶來(lái)說(shuō)一定不陌生，這是一個(gè)比較常見(jiàn)的三菱變頻器典型故障，當(dāng)然損壞原因也是多方面的。 ?。?）集成電路1302H02損壞。這是一塊集成了驅(qū)動(dòng)波形轉(zhuǎn)換，以及多路檢測(cè)信號(hào)于一體的IC集成電路，并有多路信號(hào)和CPU板關(guān)聯(lián)，在很多情況下，此集成電路的任何一路信號(hào)出現(xiàn)問(wèn)題都有可能引起E6，E7報(bào)警； ?。?）信號(hào)隔離光耦損壞。在IC集成電路1302H02與CPU板之間有多路強(qiáng)弱信號(hào)需要隔離，隔離光耦的損壞在元器件的損壞比例中還是相對(duì)較高的，所以在出現(xiàn)E6，E7報(bào)警時(shí)，也要考慮到是否是此類(lèi)因素造成的； ?。?）接插件損壞或接插件接觸不良。由于CPU板和電源板之間的連接電纜經(jīng)過(guò)幾次彎曲后容易出現(xiàn)折斷，虛焊等現(xiàn)象，在插頭側(cè)如果使用FR-A720-3.7K
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FR-F720-37K
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