The inverter can be preset with a number of different speed points, and then complete the scheduling of multiple speed stages. The specific completion method is as follows:
You can set a number of different speed points in the VFD, and you can generally set the maximum speed, minimum speed, and several center speed points.
According to the needs, select different control methods, such as fixed speed, fixed torque, constant pressure, etc., to complete different job requests.
Set the appropriate PID parameters in the control loop to ensure that the VFD can respond quickly and accurately to changes in speed and avoid overshoot or undershoot.
According to the actual load condition, adjust the size of the VFD output voltage or current to ensure that the motor can operate stably and reliably.
It can be programmed or externally signaled to complete functions such as automatic switching or manual switching of multiple speeds.
In conclusion, the key to the completion of multi-stage speed in VFD is to set the appropriate speed point, control method and PID parameters, and stop the practice of debugging and optimization. At the same time, it is also necessary to pay attention to factors such as load changes, the accuracy of the reverberated signal, and the stability of the VFD itself to ensure that the multi-stage speed scheduling can be completed stably and reliably.
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【Solution】
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