Check whether the plug-in of the long-distance milling cabinet is loose due to the loose contact of the plug-in and the long-distance milling machine. When the gantry milling machine is connected with the external power supply, the voltage and phase sequence of the input power supply should be mainly checked. Wrong phase sequence input will make the CNC system alarm immediately, and even damage the electrical components of the machine tool. After connecting the hydraulic pump and cooling pump motor on the gantry mill, it is necessary to judge whether the steering direction is correct. When the phase sequence is not correct, the phase sequence shall be replaced in time. After the hydraulic pump operates normally, turn on the power supply of CNC system.
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