The three-phase hybrid stepping motor works on the principle of AC servo. A three-phase hybrid stepping motor and its supporting driver have the characteristics of a general stepping motor. The rotor and stator have a large operating torque at a high speed ratio of 50%, and extremely stable at low speeds, with almost no resonance. Its matching stepper driver has single-phase 220V/50Hz input, three-phase sinusoidal output, output current can be set, with ten sub-divided and half-flow rated value of 60% function; flexible control mode, with "pulse + direction control" and "positive" Rotary pulse + reverse pulse" control mode; has overheat protection function, so it is very convenient to use.
Therefore, it interferes with the highly sensitive receiver system, because the driver output current 3A voltage 325V plus its outer casing is not magnetically shielded with aluminum, titanium, magnesium alloy casing. It can not work, and pollute the power supply, causing the control system's MCU and host computer to be unable to communicate. In severe cases, the MCU crashes, causing difficulties for normal use, so the interference problem must be solved.
The following measures were taken in the system: reducing the pollution of the AC power supply. 1. Install a power filter. And require good contact. 2, one point of grounding "principle. Insulate the ground of the power filter, the drive PE ground" drive and the chassis bottom plate) control pulse PULSE- and direction pulse DIR- shorted lead wire, motor ground wire, cable between drive and motor The protective cover and the driver shielding wire are connected to the grounding post on the wall of the chassis to prevent crossover. For example, when I dispose of two drive device positions in the same chassis in the dual-axis drive system, 3, try to increase the control line and power cable. (LN motor drive line (the distance between UVW. One drive nameplate is facing forward, the other is facing backwards, and the structure is arranged to make these leads as short as possible. Or by yourself (power cord) to the outside world. 4. Use shielding The line relieves the interference of the outside world.
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