Tension control


The tension control application provides a function block to implement a higher-level closed-loop tension or dancer roll position control. Generally, to control the tension, the system comprises a motor, the material web as well as optional measuring technology to sense the tension or to set the tension (dancer roll). The motor is controlled in the system so that the material web tension remains constant.

Function overview

  • Open-loop control technique (Indirect tension control / Draw control)

  • Closed-loop control technique (Tension control / Dancer roll position control)

  • Torque precontrol (tension, friction, acceleration)


It includes standardized functions for tension control and can be universally used on the following Siemens automation systems:


For high performance motion control applications with central intelligence combined with SINAMICS S120 drive systems


For applications with a PLC as a central open-loop control, in which additional closed-loop process controls are implemented


For drive-based applications with process-related implementation of the closed-loop control in the SINAMICS S120 drive system using DCC (Drive Control Chart)

Additional standard applications associated with the tension control application from the Converting Toolbox



Traversing arm technology

Axis function block