About the effect of the tension line tension

The retracting and winding process of the slitting line requires balancing tension control, and the tension is given by the tension controller. The principle of the tension controller is to calculate the winding diameter by detecting the winding speed. The load torque=F*D/2 (F is the set tension, D is the current winding diameter), so when the tension is set Since the current coil diameter is known by accounting, the load torque can be calculated.

The slitting line-tension control can output a standard 0-10V analog signal, corresponding 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 the stability of the tension throughout the dynamics of the winding.

In the form of the drive torque, the speed is limited. In the tension control mode, regardless of the DC motor, the communication motor or the servo motor, the speed limit is required. Otherwise, when the torque generated by the motor can be operated against the load torque, the rolling acceleration will occur, and the rotation speed will continue to increase. Speed up to high speed.

The speed of rewinding and unwinding is limited by the analog output AFM of the spindle B series inverter. It is also to set the frequency conversion 3-05 (analog signal output selection) parameter of the spindle B series to 03 (frequency command output). ). The signal is disconnected from the analog comfort port of the rewinding and unloading frequency converter as a setting signal for frequency reference and sad frequency.

Slitting line - zero speed tension control requirements, when the rewinding and reeling 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 rewinding and reeling of the reel and the operation of the reel, and to ensure that the reel of the rewinding 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.