During the use of laser cutting machines, malfunctions often occur. Without professional guidance, it is difficult for us to accurately determine the source of faults in laser cutting equipment. We can only rely on our own experience to explore. However, if some faults occur for the first time, we may feel at a loss, and even consult the manufacturer's after-sales service to describe them clearly, Wuhan Huayucheng Laser has carefully selected some laser cutting machine faults and corresponding fault sources or solutions for you.

1. Poor cutting effect or inability to cut through?

The power setting is too small, the potentiometer is turned down, the light is biased, the lens is dirty, the focusing lens is installed reversely, the focal length, the laser power supply, the laser tube power attenuation, the water temperature is too high, the voltage is unstable, etc. are determined according to the actual situation, and are simple as deep.

2. Can't connect to the device?

Whether the board driver is installed, whether the USB cable or network cable is properly plugged in, whether the USB cable or network cable is damaged, the adapter board is damaged, the board card, etc

3. Turn on the machine and move back to the origin in the opposite direction?

The origin switch is faulty

4. Cutting pattern deformation and cutting overlap?

Loose synchronous wheel screws, motor wire breakage, motor failure, driver, voltage, etc

5. Does the equipment fail to start and the indoor air switch trips when the machine is turned on?

Whether the emergency stop has bounced, whether the external circuit is connected, whether the internal air switch of the equipment is closed, and whether there is a sound of popping when starting the machine. If so, please check the main contactor and control transformer; Water protection leakage caused a short circuit in the laser power supply due to water ingress (such as JGHY12570 water protection installed on the side, which happens to be below the laser power supply), 107 water pump short circuit, indoor air switch too small, etc

6. High voltage line ignition?

This problem is indeed a headache. I suggest putting high-voltage insulation sleeves on the outside of the high-voltage lines

7. Is the graphic size too large or too small?

Check if the output graphics have the same size, Z-axis height and position changes, and correct files

8. Is the color in the middle and around the printed image different?

Adjust the focusing coefficient, adjust the focus of the W-axis, etc

9. Is there any damage or thickening of the light spot during the marking process?

Dynamic, DA board, etc

10. Offset of marking graphic position?

The X or Y axis position of the galvanometer is offset, and the center point is found to adjust the XY axis position according to the actual offset direction

11. Is the XY axis of the power on vibration lens swaying randomly and the dynamic motor making abnormal noise swaying randomly?

Replace the ± 12 ± 15V switching power supply; Replace the ± 12 ± 28V switch power supply

12. No light coming out?

Whether the return water of the chiller is normal, whether the position of the W-axis has changed, whether the DC48V32A laser power supply is normal, whether the laser tube, etc

13. Is there no display on the startup display panel?

Is the 5V/12V/24V switch power supply normal, display panel, etc

14. Does the display panel fail to return to the original position after startup?

Replace offline card

15. Does the Z-axis not feed or move weakly?

Z-axis feeding motor issues, driver issues, bearings, foreign objects getting stuck, etc

16. Does the glass tube not emit light?

The light output control of glass tubes mainly includes laser tubes, laser power supplies, water circulation systems, and light output signals. The light output signals also include PWM light output signals provided by the board, water protection signals, door switch signals, etc. So if the laser tube does not emit light, it mainly starts from several aspects such as the water circulation system of the laser power supply and the light output signal. Generally, the first step is to directly observe whether the laser power supply is normally powered on, whether there are any abnormalities in the inner and outer tubes of the laser tube, and whether the water circulation system is normal. If it is not normal, corresponding replacement or adjustment should be made. In the normal situation of the above aspects, the issue of optical signals should be considered. Generally, the method of testing the laser tube and laser power supply is to first use a short circuit signal (short circuit the laser power supply current of 5v and AIN short circuit the water protection P and GND using an unlocked switch to control L and GND). If this method can produce light normally, it indicates that there is no fault with the laser power supply of the laser tube. It is a signal problem with the water protection switch, relay, door switch, board PWM signal, etc., which can be eliminated in sequence. If this method does not produce a problem with the laser tube or laser power supply, replacement can be used in cases where it is difficult to determine.

17. Does the RF laser tube not emit light?

First, test whether the laser power supply DC 48V is normal when the water channel is unobstructed and the laser power supply is started normally; The continuity of pins 4 and 13 of the 25-pin laser tube plug-in indicates that the water protection signal is normal and cannot be checked for continuity; If the voltage of pins 7 and 20 is not preset or the DC voltage is around 4 to 5V at the beginning, pressing the preset or starting at around 1 to 3V is a normal signal (low level conduction). If the water, power, and these two signals are normal, it can generally be determined that the laser tube is faulty. If the signal is abnormal, it indicates a board or circuit problem