Principle Of Tension Controller Control

The principle of the tension controller control is to calculate the coil diameter by detecting the linear velocity of the winding, the load torque = F * D / 2 (F is the set tension, D is the current coil diameter), so when the tension controller sets the tension The size of the current winding diameter is known by calculation, so the load torque can be calculated. The tension controller can output a standard 0~10V analog signal, which corresponds to the rated torque of the asynchronous motor. Therefore, we use the analog signal to access the inverter and select the torque reference. This ensures a constant tension throughout the dynamics of the winding.

Speed is limited in the drive torque mode. In the tension control mode, regardless of the DC motor, AC motor, or servo motor, speed limit is required. Otherwise, when the torque generated by the motor can overcome the load torque, the rotational acceleration will be generated and the rotational speed will increase continuously. The final speed up to the highest speed is the so-called speeding.

The speed of the rewinding and unwinding is limited by the analog output AFM of the spindle B series inverter. That is, the analog signal output selection parameter of the inverter of the spindle B series is set as the frequency command output. The signal is respectively connected to the analog input port of the rewinding and rewinding frequency converter as the setting signal of the frequency reference and the upper limit frequency. When the rewinding and unwinding is running at 0 Hz, the output shaft of the motor has a certain tension output and is adjustable. This requirement is mainly to prevent the parking of the rewinding and unwinding during operation, and to ensure that the reeling of the reeling and unwinding will not be loosened. In this control system, the requirements can be met by adjusting the initial tension setting on the tension controller.