CNC machining center in the process of work, if there is no power on, how to solve the problem
There are two lights on the power supply of CNC machining center unit, one is the power indicator light, which is green, and the other is the power alarm light, which is red. Here, the power supply unit includes the power input unit and the power control part.
First of all, we need to know if the power indicator (green) doesn’t light up when the CNC machining center can’t be connected. The fuse F1 and F2 of the power supply unit have been blown. This is caused by the high input voltage, or the components of the power supply unit itself have been damaged.
The input voltage of CNC machining center is low. Please check the voltage entering the power supply unit. The allowable voltage is ac200v + 10%, 50 Hz ± 1 Hz. The power supply unit is bad, the internal element is damaged, the power indicator light is on, the alarm light also disappears, but the power supply cannot be connected. This is because the power on condition is not satisfied. By the following switch circuit, the conditions of power on are as follows:
There are three conditions for CNC to be connected
First, the source on button is closed.
Second, close the power button.
Third, the external alarm contact is opened.
The alarm light of power supply unit of CNC machining center is on: the fuse of 24 V output voltage is fused, and the + 24 V voltage is used for 1.9 “display screen, as shown in the figure below. Check whether the + 24 V is short circuited to the ground. 2. Poor display / manual data input board.
The above introduction is about how to deal with when the power supply unit of CNC machining center cannot be powered on.
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