Numerical control miller electrical control circuit failure how to do?
Numerical control miller electrical control circuit failure how to do?
Various faults will occur in the electrical control circuit during operation, which will cause shutdown or accident and affect production. Learn to analyze the electrical control circuit, find out the cause of the fault, and master the method of troubleshooting quickly, it is very necessary for the daily processing of CNC milling machine.
Learn to quickly troubleshoot the electrical control line of CNC milling machine to master the following two aspects.
The first is to understand the structure composition and working principle of the controlled equipment, the system type and driving mode of the equipment, main technical performance and specification, and motion requirements.
The second should be clear about motor function, specification and model and work control requirements, to understand the working principles and control functions of various electrical appliances.
What are the aspects of fault analysis?
Numerical control milling machine motion analysis: the hydraulic system drive equipment also needs to carry on the hydraulic system working state analysis.
Main circuit analysis: determine the number of electrical equipment, wiring status and control requirements in the power circuit, and the setting and action requirements of control execution elements, such as the position of the main contact of ac contactor, the operation requirements of the main contact of each group, and the interference and short connection of current limiting resistance. Control circuit analysis, analysis of the realization of various control functions.
Fault handling
The fault query of CNC milling machine is to understand the detailed situation before and after the fault by asking, seeing, hearing and touching before the fault is checked and processed, so as to quickly determine the specific parts of the fault and timely and accurately eliminate the fault.
Q: ask the operators about the specific situation before and after the occurrence of the fault. Whether there is frequent starting, stopping or overload before the failure occurs; Whether the control line has been repaired, maintained or changed; What happens when something goes wrong.
See: whether the circuit breaker is tripping, whether the melt is broken; Indicating whether the instrument shows abnormality; Electrical components and components are damaged, burnt, contact welding, disconnect and disconnection.
Listen: listen carefully to whether the motor, transformer and electrical components are operating normally.
Touch: when the motor winding, transformer and electromagnetic coil fail, the surface temperature rises obviously. At this time, the power supply can be cut off for touch check by hand.