For the faster production of e-motors, Siemens has developed a new application which optimally controls wire tension for linear winding and minimizes fluctuations in force. The Wire Brake software application for automated winding of rectangular coil former controls the tension of the copper wire. In comparison to passive systems, this enables higher winding speeds and a higher winding quality to be achieved. The functionality can be integrated directly into the machine project using the standard library "Simotion Wire Brake" which shortens engineering and commissioning costs. It contains algorithms which include the rectangular geometry of the coil former as well as the "TensionControl" components to control the wire tension brake axis and "CamGeneration" to calculate cams using reference values.