1. Initialization reset method: Under normal circumstances, system alarms caused by instantaneous faults can be cleared by hardware reset or switch system power in turn. If the system working storage area is lost due to power failure, unplugging the circuit board or battery undervoltage, it will cause confusion , The system must be initialized and cleared. Before clearing, you should make a record of data copy. If the fault cannot be eliminated after initialization, perform hardware diagnosis.
2. Parameter modification and program correction method: System parameters are the basis for determining system functions, and parameter setting errors may cause system failures or invalid functions. Sometimes due to user program errors can also cause failures to stop, this can be checked by the system's block search function to correct all errors to ensure its normal operation.
3. Adjustment and optimization adjustment method: Adjustment is the simplest and most feasible method. Correct the system failure by adjusting the potentiometer. For example, during maintenance in a factory, the system display screen is chaotic, and it is normal after adjustment. For example, in a factory, belt slippage occurs when the main shaft starts and brakes. The reason is that the main shaft load torque 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 to systematically achieve the best match between the servo drive system and the mechanical system being dragged. The method is very simple. Use a multi-line recorder or a dual-track oscilloscope with storage function, respectively Observe the response relationship between the command and the 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 condition with high dynamic response characteristics without oscillation. In the absence of an oscilloscope or recorder on site, based on experience, adjust to make the motor vibrate, and then slowly adjust in the reverse direction until the vibration is eliminated.
4. Spare parts replacement method: replace the faulty circuit board with a good spare part, and do the corresponding initial startup, so that the machine tool can be quickly put into normal operation, and then the broken board is repaired or repaired. This is the most commonly used troubleshooting method.
5. Method of improving power quality: Regulated power supply is generally used to improve power supply fluctuations. Capacitor filtering method can be used for high frequency interference, through these preventive measures to reduce the failure of the power board.
6. Maintenance information tracking method: Some large manufacturing companies constantly modify and improve system software or hardware based on accidental failures caused by design defects in actual work. These modifications are continuously provided to maintenance personnel in the form of maintenance information. Using this as a basis for troubleshooting, the fault can be eliminated correctly and thoroughly.
