I often hear that some former customers ask about the electromagnetic signal interference of woodworking engraving machines from other manufacturers they bought before. How should this be solved? After the test, it is found that because the general stepping motor and driver shell are not magnetically shielded by aluminum, titanium and magnesium alloy shell, it interferes with the highly sensitive receiver system, makes it unable to work, pollutes the power supply, and makes the single chip microcomputer of the control system unable to communicate with the upper computer. In serious cases, it will cause the single chip microcomputer to crash, resulting in the failure of normal use, Therefore, the interference problem must be solved.

可采取如下措施加以解决：

The following measures can be taken:

1.减少对交流电源的污染。加装电源滤波器。

1. Reduce pollution to AC power supply. Add power filter.

2.要求接触良好。一点接地”原则。将电源滤波器的地、驱动器PE地（驱动器与机箱底板绝缘）控制脉冲PULSE-和方向脉冲DIR-短接后的引出线、电机接地线、驱动器与电机之间电缆防护套、驱动器屏蔽线均接到机箱壁上的接地柱上。

2. Good contact is required. One point grounding principle. Connect the ground of the power filter, the PE ground of the driver (the driver is insulated from the chassis bottom plate), the outgoing line after the control pulse pulse pulse - and the directional pulse dir - are short circuited, the motor ground wire, the cable protective sleeve between the driver and the motor, and the driver shielding wire to the grounding column on the chassis wall.

3.防止交叉。比如处于双轴驱动系统中两个处在同一机木工雕刻机箱的驱动器装置位置时,尽量加大控制线与电源线（LN电机驱动线（UVW之间的距离）。木工雕刻机一个驱动器铭牌朝前，另一个则朝后，并在结构布置上使这些引线尽量短。

3. Prevent cross. For example, when two drivers in the same woodworking engraving case are located in the two axis drive system, try to increase the distance between the control line and the power line (LN) and the motor drive line (UVW). One driver nameplate of woodworking engraving machine faces forward and the other faces backward, and these leads shall be as short as possible in the structural arrangement.

4.使用屏蔽线减轻外界对自己的干扰。

4. Use shielded wire to reduce external interference.