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6SE7022-6TC84-6HF3 6SE70變頻器報故障代碼F002，意思是：母線欠電壓。有以下原因：
１）.一般為熔斷器燒毀 。熔斷器裝置外有，裝置內部也有。可用萬用表量出是哪的燒了。換報險時千萬不要帶電換，很危險，而且易燒內部保險。并且要檢查好燒保險原因才能更換。主要原因有幾種，電機不匹配、電纜線對地、母線接觸不良，
２）.變頻器顯示電壓低，看R006顯示電壓，電壓差太多，原因有下幾種：
裝置內靠近保險出來的檢測電路中有 N個電阻，作用是降電壓比的，如果有燒毀的，電壓顯示就會變低，電阻壞的越多顯示電壓越低，
３）.CUVC板壞掉了，
４）.母線電壓P071標定值太高，參數P071= 裝置輸入電壓。 以上幾點可以助力快速解決F002的故障， P071= 裝置輸入電壓F002為預充電故障，判斷：
在3s 的zui大預充電時間里達不到80%的zui小直流母線電壓（P071 線電壓x1.34）的話，則報F002故障。
如果你的P071的值設置的是380V的話，則F002的報故障閾值為：380X1.34X80％＝407.36V
針對F002預充電故障，可能原因有以下幾種——
1、可能充電電容有問題。
2、可能檢測預充電電壓電路有問題。
3、若是存放一年以上的變頻器，在使用前，必須預充電，否則就會燒壞電路板或報警。
4、檢查進線電源電壓有無問題。是否電源電壓太低，或者電源缺相。
5、檢查參數P071的設置是否正確。
6、如果上述都正常，則檢查變頻器的整流單元——
1）整流單元必須先于逆變器投入電網；
2）整流單元的參數設置是否正確； 3）整流單元的硬件上是否存在問題，如熔斷器燒了等等。 |
