How to solve the interference problem of stepper motor

On many occasions, because the stepper motor current and voltage higher, such as some step into motor maximum output current of 8a, voltage 325V, coupled with its shell not using aluminum alloy shell are magnetically shielded, so for high sensitive receiver system cause interference, so that it can not work, and power line interference, especially at high frequencies may caused by the control system of the SCM and PC unable to carry out normal communication, serious cause microcontroller crash, causing difficulties to the normal use, so the interference problem must be addressed.

1, the installation of power filter, reduce the pollution of AC power.

2, "a little grounded" principle. Will power filter, drive PE () (drive and chassis backplane insulation), control pulse PULSE- and direction impulse DIR- short circuit lead wire, stepper motor grounding wire, stepping motor driver and step into motor cable protective sleeve, stepper motor driver shielding wire were received the wall cabinet earthing post, and requires good contact.

3, as far as possible to increase the step motor control line and stepper motor power supply line (L, n), stepper motor drive line (U, V, w) between distance and avoid cross. For example, we in treating biaxially driven system in two in the same box stepper motor driver installation position, a drive plate toward the front, another is towards and on the arrangement of the structure enable these leads as short as possible.

4, the use of shielded wire to mitigate the interference of the outside world, or their own (stepper motor power line) for the outside