1. Initialization reset method: In general, hardware reset or system power switch can be used to clear the system alarm caused by instantaneous fault in turn. If the system working storage area is in chaos due to power failure, circuit board removal or battery undervoltage, the system must be initialized and cleared. Before clearing, pay attention to making data copy records.


2, parameter change, procedure more correct: system parameters are the basis to determine the system function, parameter setting error may cause system failure or a function invalid. Sometimes the fault shutdown can be caused by user program errors, which can be checked by the block search function of the system to correct all errors, so as to ensure its normal operation.


3, adjustment, optimization adjustment method: adjustment is one of the most simple and feasible methods. Correct system failure by adjusting potentiometer. For example, in the maintenance of a factory, the system display picture is chaotic and normal after adjustment. For example, in a factory, the belt skid occurs when the spindle is starting and braking. The reason is that the spindle load torque is large, and the inclined lift time of the driving device is set too small, which is normal after adjustment. The optimal adjustment is a comprehensive adjustment method to systematically achieve the best match between the servo drive system and the driven mechanical system. The method is very simple. A multi-wire recorder or a dual-trace oscilloscope with storage function is used to observe the response relationship between the command and the velocity feedback or the current feedback respectively. By adjusting the proportional coefficient and integration time of the speed regulator, the servo system can achieve the best working state with high dynamic response characteristic and no oscillation. In the case of no oscilloscope or recorder in the field, according to experience, that is to adjust the motor vibration, and then slowly adjust to the reverse until the elimination of shock.


4. Spare parts replacement method: Replace the faulty circuit board diagnosed with good spare parts, and do the corresponding initial start, so that the machine tool is quickly put into normal operation, and then repair or repair the broken board, which is the most commonly used troubleshooting method.


5, improve the quality of power supply method: generally use regulated power supply, to improve power supply fluctuations. For high frequency interference can be used capacitor filter method, through these preventive measures to reduce the failure of the power board.


6, maintenance information tracking method: some large manufacturing companies according to the actual work due to design defects caused by accidental failure, constantly modify and improve the system software or hardware. These changes are provided continuously to the maintenance personnel in the form of maintenance information. This can be used as the basis for troubleshooting, and the fault can be eliminated correctly and thoroughly