Solve the laser marking machine signal interference

The main factors of signal interference are laser power supply and acousto-optic driver, and the source of interference effect of external power grid fluctuation on the galvanometer is investigated. When the laser power driver is not turned on, the line scanned with the indicator light is whether the line presented is wavy. In the computer, the device is a straight line, but it is a wavy line, which is the most obvious feature of signal interference!

To solve the problem of laser marking machine signal interference, you can start from the following aspects:

1, the use of shielding lines to reduce external interference, or their own (power line) interference with the outside world.

2, install a power filter to reduce the interference of AC power to the equipment.

3. Try to increase the spacing between the control line and the power line (L, N) and the motor drive line to avoid crossing. For example, when we are dealing with two driver mounting positions in a unified chassis in a two-axle drive system, one driver nameplate faces forward, the other is facing back, and the structural arrangement makes these leads as short as possible.

4."one point grounding" principle. Connect the ground of the power filter, the driver PE(ground)(the driver is insulated from the chassis bottom), the control PULSE PULSE- and the direction pulse DIR- after short-connecting the lead wire, the motor grounding wire, the cable protective sleeve between the driver and the motor, and the driver shielding wire to the grounding column on the chassis wall, and ensure that the contact is good.