How To Repair The Inverter And Input Part Of The Sewing Machine?
Servo systems are prone to appear in the market.
inverter
And the input parts of the equipment are mainly computer sewing machines. Because of the technical innovation such as servo system, the new equipment has low failure rate.
The inverter fault of servo system, the fault of inverter part of servo system, is often caused by the destruction of inverter power module, which causes the boot to be displayed, while the operation does not respond and alarm.
In general, after the power module burns, the isolation drive circuit will be damaged, so when checking the power module has burnt down, we must check the driving circuit in detail, especially the isolation optocoupler.
At the same time, we must confirm that the power module can be replaced after the driving circuit is intact, otherwise, the instant of the test machine will be burned down, resulting in unnecessary waste.
There are many kinds of power modules. We need to use modules with the same model and the same specified values when replacing them.
Input part failure -- for
Input part
In the author's opinion, most of the malfunction occurs in the sensor part.
Because in the closed-loop servo control system, in order to feedback signals to the control system, sensors are inevitably used in the actuator, and sensors are more prone to failure parts in the electromechanical integration system. Therefore, the system generally has sensor failure detection and sensor testing procedures, which is convenient for routine maintenance.
The servo system of the sewing machine is equipped with sensors, such as upper needle position, pin position, speed measurement, safety switch, foot start, X and Y origin and presser feet.
According to the analysis, sensors are usually equipped with positions that require movement and location.
Different types of sensors have different sensors.
Generally speaking, the sensor's faults are as follows: when the boot is initialized or started, that is, when the machine is searching for the correct location of each point, it can't be recognized and is in a state of failure. After a few seconds, it stops detecting and displays the fault code.
We should press the repair.
Sewing machine
Fault code can be directly found in the failure of the sensor, and then call the input test procedure to confirm, if not, only to replace the damaged sensor.
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