Siemens Supplies Integrated Drive System
Nuremberg, Germany 21 November 2013 -- Siemens Drive Technologies Division has received the order from Mayr Melnhof Karton AG, the world's largest manufacturer of coated recycling cardboard, to modernize a board machine (KM3) in Frohnleiten, Austria. As part of renewal of the multi-motor system, Siemens will use an integrated drive system, consisting of high-torque motors of the Simotics HT-direct series and Sinamics S120 servo converters. The water-cooled gearless motors are being used in Austria's paper industry for the first time and, in conjunction with the servo drives, permit high electro-mechanical and energy efficiency.
As part of modernization of the board machine in Frohnleiten, a total of 90 drives are installed with a total drive power of eleven megawatts. 14 of them are water-cooled motors from the Simotics HT-direct series. As gearless drives, these exert high torques at low speeds directly on the driven machine. Moreover, space is saved by elimination of gearing and the engineering, installation, and maintenance work is reduced. This has a positive effect on running costs. As part of the integrated drive system, the motors are optimally adapted to operation with the Sinamics S120 converters. These converters perform all drive tasks and save additional energy in the alternation between motoring and generating requirements typically demanded by a paper machine. Siemens is responsible for the planning, hardware and software engineering, commissioning, training. The modernization measures started this fall and are scheduled to be completed around one year later.