Fault Detection Method For Servo System Of Industrial Sewing Machine

Maintenance through proper operation servo system In order to restore the normal operation of the equipment, what are the fault detection methods of the industrial sewing machine servo system?

　　 Method 1: observation method

Observation method is the most basic maintenance inspection method, mainly refers to the maintenance technicians rely on vision and touch, through the careful observation of the machine, and then compared with the normal work of the system, so as to narrow the scope of the fault or locate the fault location directly. For example: observe whether the controller and the display surface have no scars, whether the plug is off or not, and whether the lead wire is disconnected, whether the components of the circuit board are burnt, broken feet, and pins collide.

　　 Method 2: automatic detection system.

Nowadays, the electrical control system of industrial sewing machines usually has the function of intelligent automatic fault detection. We can determine the faults of the system according to the different alarm codes of the system, and further determine which part of the system has problems.

After determining the fault code, we can use the corresponding processing methods to maintain. Different brands of electronic control systems may adopt different fault codes, but the specific categories of their faults are not very different. In addition, there are obvious and specific notes on the instructions of the electronic control system.

　　 Method 3: substitution method

The replacement method is the most effective way to reduce the failure scope of the maintenance inspection method, that is, by replacing the corresponding parts on the equipment with new components, it can judge whether the parts are faulty, the location of the fault or the specific components of the fault. During maintenance, we should start with large parts and replace them step by step until we find out the faults. This method is mainly used in the case of adequate fittings or good electrical control system.

For example, when maintaining an AC servo system, it is necessary to determine whether it is a system problem. Generally, the method of changing the normal control box is used to determine whether the fault is a fault or not. Industrial sewing machine The problem of machinery or control box. In the maintenance of circuit boards, this method is also used to replace the "suspected" fault components in the circuit with good components, observe the changes of the controller and determine the location of the fault.

　 Method 4: open circuit inspection.

The open circuit inspection method is to disconnect a function loop in the control system and observe the work of the control system to narrow down the fault area. For example, the electromagnet function of the electric control system fails to alarm, and the power supply voltage of the electromagnet can be disconnected by breaking the solenoid joint or further judging whether there is any fault in other circuits.

　　 Method 5: voltage measurement method

When the AC servo controller works normally, the working voltage of each point in the machine indicates the working condition of the machine within a certain range. When the fault occurs, the working voltage will inevitably change. The measuring voltage method is to use multimeter to check whether the working voltage of each test point of the plug and circuit board in the machine is larger or smaller. When measuring, it is necessary to measure the AC voltage and DC voltage with different gears of multimeter.

The voltage measurement method is usually measured under the condition of machine electrification. Therefore, attention should be paid to single handed operation, safety first. For example, if the electronic control system does not respond, it is necessary to measure the switch from the circuit board to the circuit board until the open circuit node is found.

　　 Method 6: resistance measurement

The measuring resistance method is to determine the specific cause of the fault by measuring the connection and breaking resistance and the resistance value of the circuit through the ohmmeter of the multimeter. When a normal controller is not energized, some circuits are passages, some are open circuits, others have a certain resistance value. When abnormal work occurs, the resistance state changes, and these changes are detected by measuring resistance method, and the location of the fault is judged according to the changes.

Remember that when measuring resistance, it is usually operated when the controller is not charged. For example, electromagnet. Fault detection It is through the ohmmeter of multimeter to measure whether the resistance is in the normal range to determine whether it works normally.