There are three conditions for turning on the power supply of the precision CNC machining center: (1) The source ON button is closed. (2) The power OFF button is closed. (3) The external alarm contact is opened. But if one of them can't be done, it will not light up, so what should we do if the power is not turned on? The following introduction is as follows:
There are two lights on the power supply of the precision CNC machining center unit, one is the power indicator light, which is green; the other is the power alarm light, which is red. The power supply unit mentioned here includes the power input unit and the power control part.
When the power supply of the CNC machining center cannot be turned on, if the power indicator (green) does not light up.
The fuses F1 and F2 of the power supply unit have been blown. This is caused by the input high voltage, or the components of the power supply unit itself have been damaged.
Precision CNC machining center input voltage is low. Please check the voltage entering the power supply unit, the allowable value of the voltage is AC 200V+10%, 50HZ±1HZ
Defective power supply unit with damaged element inside
The power indicator light is on, and the warning light also disappears, but the power supply cannot be turned on.
This is because the conditions for power-on (ON) are not satisfied. By the following switch circuit, the conditions for power on are as follows:
CNC machining center power supply unit alarm light on
(1) The fuse for the 24V output voltage is blown
①. The 9" display screen uses +24V voltage, see the figure below, check whether +24V and ground are short-circuited.
②. Defective display/manual data input board