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guhua
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樓主  發(fā)表于: 2009-07-19 20:39
我公司有一臺丹佛斯VLT2900的變頻器，用外部端子控制不起作用，變頻器的設置也沒(méi)問(wèn)題，接線(xiàn)也對的，好像變頻器沒(méi)有得到運轉命令，可是我直接在變頻器的面板上設置頻率，按啟動(dòng)鍵，變頻器可以運行。請大家幫我分析一下是怎么回事
竹風(fēng)涼
巧者勞，智者憂(yōu)，無(wú)能者，無(wú)所求。蔬食者遨游，泛若不系之舟。
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1樓  發(fā)表于: 2009-07-20 05:24
外部公共端子電源是不是有問(wèn)題，檢查電壓
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