When designing the winding control, we divided the winding control into two levels. The use of a table winding variable frequency controller is selected to form an open loop speed control system. Each system controls a single spindle or a geared motor, and indirectly realizes constant line speed control by using the winding curve output of the frequency converter. Constant tension control is achieved using a tension fixed length controller for each spindle motor. Main features of winding frequency control. A small deceleration three-phase motor is used, and each motor controls a single spindle or a single spindle. Set the winding control curve to approximate constant line speed winding. Now the yarn constant tension control and gauge length control. The yarn breakage is self-stopping, and the other spindles of the work are not affected when threading.
The total current consumed by the basic wiring and reset without the frequency converter should not exceed the maximum rated output current allowed by the frequency converter and each motor must take further motor protection measures. The external terminal operation command is used to simulate the potentiometer input method. After the function code is set to wrap each batch of yarn, stop again and continue to press the reset button before the next batch of yarn winding, and use the signal of the external control terminal to clear and reset. The setting of the winding curve and the realization of the constant line speed select the inverter winding function in the winding control action, that is, the tension frame correction is selected as none, that is, when the inverter stops or alarms, the control pauses and keeps the elapsed time in the last operation. . The winding time is the longest in the winding function, and it is necessary to set parameters such as the winding start frequency winding end frequency and the winding end time 殆. Basic wiring of the inverter The basic wiring of the inverter is shown in the figure. The motor represents multiple motors connected in parallel on the output circuit. Speed ​​control of the spool allows for stable winding.
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