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決：

The following measures can be taken:

1.減少對交流電源的污染。加裝電源濾波器。

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

2.要求接觸良好。一點接地”原則。將電源濾波器的地、驅動器PE地（驅動器與機箱底板絕緣）控制脈沖PULSE-和方向脈沖DIR-短接后的引出線、電機接地線、驅動器與電機之間電纜防護套、驅動器屏蔽線均接到機箱壁上的接地柱上。

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。比如處于雙軸驅動系統中兩個處在同一機木工雕刻機箱的驅動器裝置位置時,盡量加大控制線與電源線（LN電機驅動線（UVW之間的距離）。木工雕刻機一個驅動器銘牌朝前，另一個則朝后，并在結構布置上使這些引線盡量短。

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.使用屏蔽線減輕外界對自己的干擾。

4. Use shielded wire to reduce external interference.