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2013-06-22 12:59How to solve electromagnetic interference engraving machine?

Woodworking engraving machine distribution box of the electromagnetic signal interference problems, mainly due to the general stepper motor and drive housing is not made ​​of aluminum, titanium, magnesium alloy casing magnetically shielded, so the sensitivity of the receiver system to cause interference, it does not work and pollution power, resulting engraving machine control system microcontroller and PC can not communicate, causing severe crashes MCU to normal use had a significant impact, so the interference problem must be addressed. Here, Jinan River CNC experts recommend the following measures can be taken to be addressed:

1, the installation of power supply filter, reducing contamination of the AC power source.

2, according to the "little ground" principle, the power filter, the drive PE (ground) (driver and chassis floor insulation), the control pulse PULSE-and direction pulse DIR-short after lead, the motor ground wire, the drive protective cover and the motor cable between the drive shielded wire are connected to the grounding screw on the chassis wall and requires a good contact.

3, try to increase the control line and the power line (L, N), motor-driven cable (U, V, W) between the distance, to avoid cross. Example, we deal with two-axis drive system in the same chassis driver installation location, woodworking engraving machine a drive plate facing forward, the other backwards, and in the structural arrangement on these leads as short as possible.

4, the use of shielded cable to reduce interference from the outside world on their own, or their (power line) against outside interference.

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