1. Initialization reset method: Under normal circumstances, the system alarm caused by the instantaneous fault can be cleared by hardware reset or switching the system power supply in turn. , the system must be initialized and cleared, and data copy records should be made before clearing. If the fault cannot be eliminated after initialization, perform hardware diagnosis.
2. Parameter change, program correction method: system parameters are the basis for determining system functions, and incorrect parameter settings may cause system failures or invalid functions. Sometimes due to user program errors can also cause downtime, which can be checked by using the system's block search function to correct all errors to ensure its normal operation.
3. Adjustment, optimization adjustment method: adjustment is the easiest way. Correct the system fault by adjusting the potentiometer. For example, in a factory maintenance, the system display screen is chaotic, and it is normal after adjustment. For example, in a certain factory, the belt slip occurs when the main shaft starts and brakes. The reason is that the load torque of the main shaft is large, and the ramp-up time of the drive device is set too small, which is normal after adjustment.
Optimal adjustment is a comprehensive adjustment method that systematically achieves the best match between the servo drive system and the mechanical system being dragged. Observe the response relationship between the command and speed feedback or current feedback. By adjusting the proportional coefficient and integral time of the speed regulator, the servo system can achieve the best working state with high dynamic response characteristics without oscillation. In the absence of an oscilloscope or recorder on site, according to experience, adjust to make the motor start to vibrate, and then slowly adjust in the reverse direction until the vibration is eliminated.
4. Spare parts replacement method: Replace the diagnosed circuit board with a good spare part, and do the corresponding initialization to make the machine tool quickly put into normal operation, and then repair or repair the bad board. This is the most common troubleshooting method.
5. Improve the power quality method: generally use a regulated power supply to improve power supply fluctuations. For high-frequency interference, capacitive filtering can be used to reduce power board failures through these preventive measures.
6. Maintenance information tracking method: Some large manufacturing companies constantly modify and improve system software or hardware according to accidental failures caused by design defects in actual work. These modifications are continuously provided to service personnel in the form of service information. Using this as the basis for troubleshooting, the fault can be eliminated correctly and thoroughly.
