A particular focus during the mill’s conversion was sustainability: the existing components of the paper machine were to be reused as much as possible. This requirement posed a multidimensional puzzle, which our experts skilfully solved. While a large part of the existing components continues to be used in the rebuilt paper machine, ABB achieved a performance increase of 25% —despite using the same number of transformers and supply units and without expanding the switchgear room.
To achieve this, ABB implemented an innovative multi-motor concept for process drives, minimizing the need for re-cabling for the power section, bus communication, and auxiliary power supply. This solution proved especially valuable given the limited space in the existing switchgear rooms, optimizing their use. Additionally, ABB provided drives for new roll cutters and the first medium-voltage drives for the two pulper drums, with the order volume for ABB reaching double-digit millions.
“A conversion of this magnitude involves many risks, but on the motor and drive side, we were not disappointed. The excellent teamwork with the committed and competent project and commissioning team ensured a smooth start-up within ABB’s area of responsibility,” said Dirk Schwarze, Managing Director, Model Sachsen Papier.