IC693MDL940CA/IC693MDL940

IC693MDL940CA/IC693MDL940

IC693MDL940CA/IC693MDL940

IC693MDL940CA/IC693MDL940

当变频器上一直显示代码P.OFF而不跳转为0，那么主要因为有输入电压过低、输入电源缺相及变频器电压检测电路故障。

　　处理方法：先测量电源三相输入电压，R、S、T端子正常电压为三相380V，如果电压低于320V或输入电源缺相，则排除外部电源故障。如果输入电源正常可判断是变频器内部电压检测变压器故障或缺相保护故障。

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