Troubleshooting of CNC parts system

In general, when the fault occurs, the alarm indicator light on the speed unit in the numerical control is abnormal, the fuse is blown out, and all kinds of jump switch for protection are given an alarm. After the failure, our work can not continue, which greatly delays our work efficiency. In fact, a lot of times, we can solve the problems by ourselves, but many people do not know what method can be used to deal with the sudden fault of CNC parts processing system. Today, the editor will teach you a few simple methods.

1. The protection switch of CNC parts processing system starts alarm. The protection switch is a device to protect the machine tool. For example, high voltage will burn some components and other emergency measures that cannot be controlled by the machine tool. When meeting these conditions, the protection switch will start to avoid unnecessary component damage, similar to safe stop and so on.
2. If the voltage is too low, the machine tool will give an alarm. The probability of this kind of occurrence in the machining center is very rare. This may be caused by the input voltage being lower than 85% of the rated value, or due to poor power connection.
3. The alarm is caused by the broken feedback line of the detection speed, which is an error alarm, because there is no problem in the airport, and there is a problem in the detection and feedback system. Most of the alarms are caused by the broken speed feedback line of the CNC servo motor of the machining center or the poor contact of the detection feedback line.
4. Overload alarm, the cause of overload alarm is that the CNC mechanical load of the machining center is abnormal, or the upper limit value of motor current on the speed control unit is set too low. The permanent magnet falling off on the permanent magnet motor will also cause overload alarm. If the CNC motor without brake in the machining center can’t rotate by hand or it is very hard to rotate the shaft when it is no-load, it means that the permanent magnet has fallen off completely.
5. The fuse on the CNC speed control unit of machining center is blown or the circuit breaker trips.
6. In general, there are two possibilities of high current alarm, that is, high current alarm caused by damage and short circuit of power drive element on CNC speed control unit of machining center.
7. High voltage will also cause alarm of machine tool. Generally, there are three possible situations of high voltage alarm, which may be that the input voltage of CNC of machining center exceeds 10% of rated value, or insulation performance of servo motor decreases, or high voltage caused by circuit of speed control unit of machining center.