The maintenance and maintenance of programming controller

Today to introduce the slant bed CNC lathe is strong electric control system of ordinary relay contactor control system and PLC programmable controller maintenance knowledge:

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1. Ordinary relay contactor control system maintenance

in addition to the CNC system, the economical nc machine tools and common relay contactor control system. Its maintenance and maintenance work, mainly is how to take measures to prevent the high voltage cabinet of contactor, relay strong electromagnetic interference problem. Slant bed CNC lathe of high-voltage electrical cabinet of the contactor, relay and other electric components are the interference sources of CNC system. Because of ac contactor, frequent of ac motor start, stop, the control circuit of the electromagnetic induction phenomenon will make the CNC system produce the noise, such as peak or the wave surge interfere with the normal work of the system.

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so must take actions to these electromagnetic interference, eliminated. For ac contactor coil, for example, in its both ends or three-phase ac motor input parallel RC network to suppress these electrical noise interferences. In addition, attention should be paid to prevent the oxidation of contacts of contactor, relay and contactor of poor contact, etc.

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2。 Maintenance of PLC programmable controller

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PLC programmable controller and slant bed on numerical control lathe important electrical control part. High voltage control system except with auxiliary motion of the auxiliary machine tool movement and control, also including the protection switch, all kinds of stroke and the limit switch control.

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at the above process, the PLC programmable controller to replace most of the high voltage control system in machine tool machine tool electrical appliances, so as to realize the spindle, tool change, lubrication, cooling, hydraulic, pneumatic logic control system. PLC programmable controller and numerical control device is one of the built in PLC, and the numerical control device form the independent type PLC outside. Because the structure of the PLC and CNC devices have similarities, so you may refer to the maintenance of CNC equipment maintenance and maintenance.

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