As a high-precision machining equipment, the electrical control system of the Walter tool grinder is the core to ensure the stable operation of the equipment. The alarm function, as a key mechanism for system fault warning, can provide timely feedback on operational abnormalities. Mastering common alarm types and causes is crucial for quickly troubleshooting and improving equipment utilization. Based on the operating mechanism of the equipment and on-site practice, the alarm of its electrical control system is mainly concentrated in four core modules: power system, sensor feedback, actuator failure, and program logic.
Power system alarm is the most basic and frequent type. The system requires stable input voltage and pure power quality. When the input voltage fluctuates beyond the rated range of ± 10%, an overvoltage or undervoltage alarm will be triggered; If there is poor contact, excessive grounding resistance, or failure of auxiliary components such as filters and voltage regulators in the power supply line, it will cause power clutter interference alarm. This type of alarm is usually accompanied by device startup failure, flashing indicator lights, and other phenomena. When troubleshooting, priority should be given to detecting the parameters of the power input terminal and the status of the line connection.
Sensor feedback alarms are particularly common in high-precision machining scenarios. The Walter tool grinder is equipped with key components such as position sensors, pressure sensors, temperature sensors, etc., for real-time monitoring of spindle position, grinding wheel pressure, motor temperature and other parameters. When the sensor is covered by oil pollution, displaced by mechanical collision, or the signal transmission line is aged and damaged, signal loss or deviation alarm will occur; If the monitoring parameters exceed the set threshold, such as high motor temperature or abnormal grinding wheel pressure, a protective alarm will also be triggered to prevent equipment overload damage.
The malfunction alarm of the executing mechanism is directly related to the execution of equipment actions. If there are problems with the servo motor, solenoid valve, contactor and other actuating components of the grinder, such as motor bearing wear, electromagnetic coil burnout, contactor contact oxidation, etc., it will cause the action to be stuck or fail, triggering the actuator alarm. For example, the overload alarm of the spindle servo motor may be due to excessive load or decreased motor insulation performance; Electromagnetic valve alarms are often related to valve core blockage and insufficient air source pressure.
The program logic alarm originates from abnormal execution of instructions in the control system. On the one hand, errors in the programming of machining programs, such as coordinate parameters exceeding the range of machine tool travel, can trigger program verification alarms; On the other hand, PLC control program logic conflicts, data storage unit failures, or system software version compatibility issues can also cause instruction execution interruptions and alarms. This type of alarm requires professional equipment to read the fault code and troubleshoot it in conjunction with program logic.
In summary, the alarm of the electrical control system of the Walter tool grinder is essentially a self-protection and fault indication of the equipment. In daily maintenance, it is necessary to ensure stable power supply, clean and calibrate sensors, regularly inspect actuators, and write standardized programs, combined with accurate positioning of alarm codes, in order to efficiently solve faults and maintain high-precision operation of equipment.