Problems encountered in the commissioning process of automatic stator motor coil winding machine and the solution

1、Automatic winding machine spindle inverter over voltage alarm

When the automatic winding machine spindle inverter stops each time, the operation panel will produce ol overvoltage alarm. Using a multimeter to measure the power supply voltage on the input side, the voltage is found to be normal, so the fault is locked in the deceleration time set by the inverter. In order to minimize the inertia of the spindle when it stops, the deceleration time of the inverter is set to be very small, causing the inverter frequency and motor synchronous speed to drop rapidly after the stop signal is sent. Due to the large inertia of the automatic winding motor, the actual speed of the automatic winding motor exceeded the synchronous speed at this time, and the winding motor was running in the generator state, and a large voltage was induced on the stator side of the motor, and the inverter issued an overvoltage alarm. After actual debugging, the deceleration time of the system is set to 0.5s, which can make the inertia of the winding machine deceleration small and ensure no over-voltage alarm.

2, winding machine winding servo drive alarm processing

In the commissioning process, the automatic winding servo drive of the winding machine often fails to alarm. The reason is usually the communication between the encoder and the servo drive is abnormal. After the servo drive is powered off, insert the connection plug cn2 between the encoder and the servo drive again. after power on again, the fault is removed.

Automatic winding machine factory

3. Winding machine servo following capability setting

The servo following capability of the layout servo is set by the parameters of the servo driver. The larger the parameter value set, the smaller the execution error of the position command and the stronger the following ability; however, if the value is set too large, it is easy to cause the vibration of the automatic winder. Therefore, the setting of this parameter value should consider the winder and the following of position command.

4. Determination of winder sampling period

If during the commissioning process, it is found that the winding mechanism of the winding machine has obvious go-stop phenomenon, and in each go-stop cycle, the go-stop time is very short and the stop-stop time is very long, which leads to inconsistent line tightness. Consider shortening the sampling cycle to twice the PLC scan cycle and continue debugging. The results show that the row of wire mechanism moves smoothly, no one-stop phenomenon occurs, and the row of wire is more compact.

5. Tension when winding round steel wire

When winding, the tension of the round wire is adjusted by the number of turns wound on the tension roller. When winding fine round wires, if the tension value is not adjusted properly, the fine wires will be stretched and thinned and the insulating paint will come off. Therefore, the manufacturer should summarize the appropriate number of turns for different round wire diameters.

6. Tension when winding flat wire

When winding flat wire, the tension is adjusted by adjusting the air pressure of the disc brake pad. We should also summarize the air pressure corresponding to different wire widths.

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