CNC machine tool electrical control system in addition to CNC assembly (including spindle drive and feed-driven servo system), but also contains the machine power control system. Machine power control system is important by the ordinary exchange of ideas driven by the drive and machine logic control assembly PLC and control panel and other departments. Here briefly introduces the machine power control system in ordinary relay warfare control system and PLC programmable controller protection and maintenance.
PLC programmable controller protection and maintenance
PLC programmable controller is also a tense electrical control system on the CNC sector. Power control system of CNC machine tools in addition to help the machine tool activities and help control the movement, but also to the protection switch, all kinds of distance and limit switch control. In the above process, PLC programmable controller can replace the majority of machine tools in the power control system of CNC machine tools to complete the logic control of the spindle, tool change, smooth, cooling, hydraulic, pneumatic and other systems. When PLC programmable controller and CNC assembly are integrated, the built-in PLC is formed, while the PLC is located outside the NC assembly. Because of the layout of PLC and CNC assembly of a similar place, so its protection and nursed back to the NC assembly can refer to the protection and maintenance.
Protection and recuperation of ordinary relay warfare control system
CNC plasma cutter suppliers produce the CNC machine tools in addition to CNC system, the economy of CNC machine tools are otherwise ordinary relay warfare control system. Its protection and nursed back to health, it is important how to adopt the pace to guard against strong counter in the fight, relay strong electromagnetic interference problems. CNC machine tool in the power cabinet fight, the relay and other electromagnetic components are CNC system nuisance. Because of the exchange of warfare, the exchange of electricity frequency is still starting, containment, the signs of electromagnetic induction will make CNC system control circuit spikes or surges and other noise, nuisance system abnormalities. Therefore, we must take steps to take these electromagnetic nuisances and lift them. For example, to deal with the switching coil, the two ends or the three-phase output of the switch are connected in parallel RC to restrain the nuisance noise generated by these appliances. In addition, we must carefully guard against the fight, the relay contact oxidation and contact bad and so on.
