E6,E7故障對于廣大用戶來說一定不陌生,這是一個比較常見的三菱變頻器典型故障,當然損壞原因也是多方面的。 (1)集成電路1302H02損壞。這是一塊集成了驅動波形轉換,以及多路檢測信號于一體的IC集成電路,并有多路信號和CPU板關聯,在很多情況下,此集成電路的任何一路信號出現問題都有可能引起E6,E7報警; (2)信號隔離光耦損壞。在IC集成電路1302H02與CPU板之間有多路強弱信號需要隔離,隔離光耦的損壞在元器件的損壞比例中還是相對較高的,所以在出現E6,E7報警時,也要考慮到是否是此類因素造成的; (3)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過幾次彎曲后容易出現折斷,虛焊等現象,在插頭側如果使用不當也易出現插腳彎曲折斷等現象。以上一些原因也都可能造成E6,E7故障的出現。
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