Drives for Web Handling

Blogmaster: Clarence Klassen

Inertia Compensation

Web Length Changes

Posted by Clarence Klassen on May 9, 2011

Web tension is complicated whenever the web path changes. This may happen when nips open or close. It has a huge impact during and index or cutover in a turret winder. Whenever the web length changes, the speed of at least one roll or roller must change to maintain tension. If the web length shorte...

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Posted in: Diameter, Tension Measurement and Control, Inertia Compensation, Design, Center Winding

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Inertia Compensation for a Winding Roll

Posted by Clarence Klassen on October 18, 2010

While Inertia Compensation should be considered for a fixed roller, it is almost always required for winding rolls if the line speed changes. That is because there is a huge change in inertia between core diameter and maximum diameter of a roll. Inertia of the roller increases with the 4th power of ...

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Posted in: Diameter, Tuning, Inertia Compensation, Center Winding

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Clarence Klassen

President. Designated Consulting Engineer with Professional Engineers Ontario (PEO). KlassENgineering was incorporated in 1999. Clarence applies 31 years in the Pulp and Paper industry to solving problems with drives for web handling. He has 10 years experience as a drives engineer with GE Canada and 10 years experience with Opcode Systems Inc., a PLC and Drives Systems Integrator. Much of Clarence's experience was gained in onsite installation of new equipment and troubleshooting of existing equipment. KlassENgineering performs Pre-Start Health and Safety Reviews as required by the Ontario Ministry of Labour.

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