In winding machines, the winding materials are controlled at a specified tension. Therefore, the host PLC calculates the torque (reference) to be output from the motor. Additionally, the drive unit controls to output a torque corresponding to this torque reference. Furthermore, operation is made with speed control when the winding is completed or winding of next materials is started.
On the other hand, if operation based on the torque reference sent from the host PLC continues in case of a fault, such as material breakage, overspeed may result. In such case, the control is automatically changed to the speed control. (Torque control with speed limit function) The following describes how to use the torque control for operation with normal rotation and positive torque.
On the other hand, if operation based on the torque reference sent from the host PLC continues in case of a fault, such as material breakage, overspeed may result. In such case, the control is automatically changed to the speed control. (Torque control with speed limit function) The following describes how to use the torque control for operation with normal rotation and positive torque.
No comments:
Post a Comment