Engraving and milling machine electromagnetic interference

Nc machine tools are machinery, electronics, high voltage, low voltage, automation in the combination of hardware and software products, in the process of its operation, with the transformation of electromagnetic energy, on the one hand, it impact on the environment, on the other hand, its itself, from different parts of the environment electromagnetic disturbance, a direct impact on the reliable operation of the CNC system. Therefore, in the engraving and milling machine CNC system design, anti-interference problem is not allow to ignore. By analyzing of the interference sources, mainly from three aspects: the space the electromagnetic interference, power grids and internal system, solve the problem of interference from the two aspects of hardware and software of the system.
method with software filtering software, software watchdog, software redundancy, breakdown self check, etc. In view of the interference sources,
hardware adopted different measures, such as:
( 1) For the encoder pulse input signal, USES the differential input, and through the high-speed optical coupling isolation, then through shaping circuit plastic;
　　( 2) To switch input, and can be run out first coupling isolation, common mode interference suppression, and the norm of capacitance to suppress interference;
　　( 3) Reasonable design of printed circuit boards.
engraving machine price information in the numerical control network.