The reason for the encoder error alarm of the machining center

The CNC machining center is a high-efficiency automated machine tool that is composed of mechanical equipment and a CNC system and is suitable for processing complex parts. The CNC machining center is one of the most widely used CNC machine tools in the world. Its comprehensive processing ability is relatively strong. After the workpiece is clamped, it can complete more processing content. The processing accuracy is high. For batch workpieces with medium processing difficulty, its efficiency is 5 to 10 times that of ordinary equipment, especially it can complete Many processings that cannot be completed by ordinary equipment are more suitable for single-piece processing with more complex shapes and high precision requirements or for small and medium batch production of multiple varieties.

　　 Then there may be an encoder error alarm when we use it. What is the reason? We together look!

　　Fault 1: NC machining center serial encoder communication error alarm

　　 Reason: The unit detects that the motor encoder of the CNC machining center is disconnected or has poor communication. Check whether the connection between the encoder feedback wire of the motor and the amplifier is correct and firm. If the feedback line is normal, replace the servo motor (because the encoder of the motor is integrated with the motor and cannot be disassembled), if it is an α motor, replace the encoder. If it happens occasionally, it may be caused by interference. Check whether the shielded wire of the motor feedback wire is intact.

　　Fault 2: The encoder pulse count error alarm of the CNC machining center (LED display 6, the system PMM screen display 303/304/305/308 alarm)

　　 Reason: The serial encoder of the servo motor loses pulses or does not count during operation. Turn off and on again, if the same alarm still exists, replace the motor (replace the encoder if it is an α motor) or the feedback cable. If the alarm disappears after restarting the CNC machining center, you must return to the reference point before running other instructions. If the PMM of the system is 308 alarm, it may be caused by interference, turn off and then turn on.