Stepper motor interference problem solution - Database & Sql Blog Articles

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In many cases, because the stepper motor has a higher current voltage, such as YK3822MA's maximum output current of 8A, voltage of 325V, and its housing is not magnetically shielded with an aluminum alloy casing, it interferes with the highly sensitive receiver system. It can not work, and interferes with the power supply, especially at high frequencies, which may cause the microcontroller and the host computer of the control system to fail to communicate normally. In severe cases, the microcontroller crashes, causing difficulties for normal use, so the interference problem must be solved. 1. Install a power filter to reduce the pollution of the AC power supply. 2. The principle of “one point of grounding”. 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- shorted the lead wire, the motor ground wire, the cable cover between the driver and the motor, the driver The shielded wires are connected to the grounding post on the wall of the chassis and require good contact. 3. 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 two of the two-axis drive system in the same chassis. When the drive is installed, one drive nameplate faces forward and the other faces backwards, and the construction is arranged to keep these leads as short as possible. 4. Use shielded wires to reduce external interference to yourself or interference from the outside world (power cord).