Woodworking engraving machine stepper motor drive selection considerations

Since the stepping motor and the driver housing are not magnetically shielded by aluminum, titanium, and magnesium alloy housings on the woodworking engraving machine, they interfere with the highly sensitive receiver system, making it inoperable and contaminating the power supply, resulting in a microcontroller for the control system. The host computer cannot communicate, and the serious one causes the microcontroller to crash, causing difficulties for normal use. Therefore, the interference problem must be solved.

The following measures can be taken to solve:
A. Install a power filter to reduce the pollution of AC power.
B. "One point grounded" principle. Ground of the power filter, the driver PE (ground) (insulated between the driver and the chassis base), the control pulse PULSE- and the direction pulse DIR- shorted lead wire, the motor ground wire, the cable guard between the driver and the motor, and the driver The shielded wires are connected to the grounding posts on the wall of the chassis and require good contact.
C. Try to increase the distance between the control line and the power line (L, N) and the motor drive line (U, V, W) to avoid crossover. For example, we are dealing with the installation of two drives in the same chassis in a two-axis drive system. In position, one drive nameplate faces forward and the other rearward, and these leads are made as short as possible in the structural arrangement.
D. Use shielded cables to reduce outside interference with yourself or yourself (power cord) to the outside world.

After the above processing, the system works reliably.



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