Paper360 - September/October 2016 - 52

Fig. 4: Two FlexoDirect with steam heads with torque support in horizontal connection. system for a complete dryer section. This water-cooled, Permanent Magnet Synchronous Motor (PMSM) is the only drive solution available that allows the installation of the motor together with the steam head on the drive side. This is possible because the hot steam needed for the drying, as well as the condensate, can be led through the hollow shaft of the motor (Figs. 3 and 4.) Unlike conventional drive solutions, the FlexoDirect can be installed within the dryer hood due to the compact design of the motor. A fixed connection of the FlexoDirect to the machine frame is not necessary; occurring reaction forces and tensions are not transferred in the frame, because the torque support is designed so that movements can be absorbed three-dimensionally. Because of the FlexoDirect's high-precision control, the torsional rigid connection, and the elimination of the mechanical slack, Mondi Dynäs now has a smooth and dynamic drive. The elimination of all intermediary shafts, gearboxes and gear wheels also reduces the maintenance effort required for mechanical components. "(The new drive technology) exceeds all expectations with regard to downtime improvements," Linnonmaa says. "We also see enormous improvements by eliminating the old closed wheel housing drive. Maintenance expenses have gone down. The oil demand has decreased because we only have to lubricate the cylinder bearings. The problems with the leakages of the housing of the old drive are completely gone. Furthermore, the noise has been drastically reduced. That makes the work at the machine for all involved much better and more comfortable." SUBSEQUENT PROJECTS One year after the Mondi Dynäs rebuild project in Sweden, AS rebuilt another complete paper machine in Czech Republic. The major objective was to modernize the paper machine and to eliminate the oil leakages caused by the closed wheel housing inside the machine frame. AS equipped this machine with 26 FlexoDirect hollow shaft direct drives on the tending side of the paper machine (FlexoDirect can be installed at the drive side as well as on the tending side.) Beside 11 standard drives, AS also installed two Cooliflex units as well as the FlexoFlow intelligent flow meter. In addition, AS replaced the existing central oil lubrication system for the drying cylinder and guide roll lubrication. In total, AS supplied a 5000 liter tank with 368 FlexoFlow controllers to provide the oil for the 368 lubrication points. Also in 2015, AS began a rebuild project in the US at Mondi Pine Bluff. The reason for the rebuild was to eliminate the outworn and obsolete paper machine drive. The old drive consisted of one long drive shaft, which transferred the power to each dryer group via pulleys and belts. Afterwards, each dryer group was driven by an open wheel drive. AS installed two FlexoDirect direct drives in the PM's first dryer group and the cooling aggregate Cooliflex for the complete machine. AS also delivered one spare motor. The new drive system will be more reliable, more efficient, and have reduced maintenance expenses; the next step is to rebuild the rest of the machine. Ramazan Ataman is sales director, AS Drives & Services GmbH. The AS Drives & Services assembly team. 52 Paper360º SEPTEMBER/OCTOBER 2016 www.tappi.org http://www.tappi.org

Table of Contents for the Digital Edition of Paper360 - September/October 2016

Setpoint
Over the Wire
Agenda 2020 Launches ‘Roadmaps’ to Efficiency, Sustainability, and New Product Goals
RBI: Transforming to Meet the Industry’s Research Needs
Paper Schools: Forging the Future
PPI Top 100
RISI’s Latin American CEO of the Year
Automation Upgrade Helps Sappi Gratkorn Perform
Innovative Direct Drive in a Turnkey-rebuilt Project
Klingele Papierwerke Saves Money, ‘Foils’ Stickies
TAPPI Journal Summaries
Life Cycle of the US Paper Industry
TAPPI News
ASPI News
Index of Advertisers
Paper360 - September/October 2016 - bellyband1
Paper360 - September/October 2016 - bellyband2
Paper360 - September/October 2016 - cover1
Paper360 - September/October 2016 - cover2
Paper360 - September/October 2016 - 3
Paper360 - September/October 2016 - 4
Paper360 - September/October 2016 - 5
Paper360 - September/October 2016 - Setpoint
Paper360 - September/October 2016 - 7
Paper360 - September/October 2016 - Over the Wire
Paper360 - September/October 2016 - 9
Paper360 - September/October 2016 - 10
Paper360 - September/October 2016 - 11
Paper360 - September/October 2016 - 12
Paper360 - September/October 2016 - 13
Paper360 - September/October 2016 - Agenda 2020 Launches ‘Roadmaps’ to Efficiency, Sustainability, and New Product Goals
Paper360 - September/October 2016 - 15
Paper360 - September/October 2016 - 16
Paper360 - September/October 2016 - 17
Paper360 - September/October 2016 - 18
Paper360 - September/October 2016 - 19
Paper360 - September/October 2016 - RBI: Transforming to Meet the Industry’s Research Needs
Paper360 - September/October 2016 - 21
Paper360 - September/October 2016 - 22
Paper360 - September/October 2016 - 23
Paper360 - September/October 2016 - Paper Schools: Forging the Future
Paper360 - September/October 2016 - 25
Paper360 - September/October 2016 - 26
Paper360 - September/October 2016 - 27
Paper360 - September/October 2016 - 28
Paper360 - September/October 2016 - PPI Top 100
Paper360 - September/October 2016 - 30
Paper360 - September/October 2016 - 31
Paper360 - September/October 2016 - 32
Paper360 - September/October 2016 - 33
Paper360 - September/October 2016 - 34
Paper360 - September/October 2016 - 35
Paper360 - September/October 2016 - 36
Paper360 - September/October 2016 - 37
Paper360 - September/October 2016 - RISI’s Latin American CEO of the Year
Paper360 - September/October 2016 - 39
Paper360 - September/October 2016 - 40
Paper360 - September/October 2016 - 41
Paper360 - September/October 2016 - 42
Paper360 - September/October 2016 - 43
Paper360 - September/October 2016 - 44
Paper360 - September/October 2016 - 45
Paper360 - September/October 2016 - Automation Upgrade Helps Sappi Gratkorn Perform
Paper360 - September/October 2016 - 47
Paper360 - September/October 2016 - 48
Paper360 - September/October 2016 - 49
Paper360 - September/October 2016 - Innovative Direct Drive in a Turnkey-rebuilt Project
Paper360 - September/October 2016 - 51
Paper360 - September/October 2016 - 52
Paper360 - September/October 2016 - 53
Paper360 - September/October 2016 - Klingele Papierwerke Saves Money, ‘Foils’ Stickies
Paper360 - September/October 2016 - 55
Paper360 - September/October 2016 - 56
Paper360 - September/October 2016 - 57
Paper360 - September/October 2016 - TAPPI Journal Summaries
Paper360 - September/October 2016 - 59
Paper360 - September/October 2016 - 60
Paper360 - September/October 2016 - 61
Paper360 - September/October 2016 - Life Cycle of the US Paper Industry
Paper360 - September/October 2016 - 63
Paper360 - September/October 2016 - 64
Paper360 - September/October 2016 - 65
Paper360 - September/October 2016 - TAPPI News
Paper360 - September/October 2016 - 67
Paper360 - September/October 2016 - ASPI News
Paper360 - September/October 2016 - 69
Paper360 - September/October 2016 - Index of Advertisers
Paper360 - September/October 2016 - cover3
Paper360 - September/October 2016 - cover4
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