Clarence Klassen posted a blog post
Yellow Submarine Original Artwork copyright 2012Whine, Whine, Whine. Life is full of excuses.Last week I was responsible for a drive upgrade. The day ended, the line is running and the drive with Out-Of-The-Box parameters and is not tuned. Let me li…
Jun 3
Clarence Klassen posted a blog post
Yellow Submarine Original Artwork copyright 2012Accumulators are needed whenever a line must remain running for a splice or precise cut. Pneumatic accumulators are the simplest accumulator control for the control engineer and operator to understand.…
May 27
Clarence Klassen posted a blog post
Yellow Submarine Original Artwork copyright 2012Several times over the years I have heard of tension variations resulting in damaged coatings. I referred to Roll and Web Defect Terminology, 2nd Edition by R. Duane Smith. The coating defect that may…
May 20
Clarence Klassen posted a blog post
Very Slowly responding tension regulatorAt the IWEB conference at Oklahoma State University in 2011, one of the feature speakers, Dr. Günther Brandenburg, presented an interesting paper about tension control for printers. In the course of his resear…
May 13
Clarence Klassen posted a blog post
Dr. Günther Brandenburg, speaking at the IWEB conference at Oklahoma State University in 2011 spoke of making the controls as Simple as Possible, but as Accurate as Necessary. His keynote address was titled "Advanced Process Models and Control Strat…
May 5
Clarence Klassen posted a blog post
Yellow Submarine Original Artwork copyright 2012When I started my career in drive control and automation, I tried hard to do the most with the least processor power and the least memory. I learned which data types used the least memory and executed…
Apr 22
Clarence Klassen posted a blog post
Yellow Submarine Original Artwork copyright 2012Often the Torque Hold function provides adequate tension during most of the index, but may not provide enough tension for a good clean cut. The knife may require a very taut web if the web is stretchy.…
Apr 15
Clarence Klassen posted a blog post
Yellow Submarine Original Artwork copyright 2012Many events happen during a turret winder index that make it very difficult to control tension. An old, but practical, technique for surviving an index is to put the outgoing spindle into Torque Hold m…
Apr 8
Clarence Klassen posted a blog post
Yellow Submarine Original Artwork copyright 2012While not the only cause, it is well known that tension variations cause a web to move in the cross-machine direction. The web displacement or movement can be in either direction, to the operator size…
Apr 1
Clarence Klassen commented on Clarence Klassen's blog post Regulator Tuning – Request for Metrics
"I agree with comments below"
Apr 1
Clarence Klassen posted a blog post
Yellow Submarine Original Artwork copyright 2012One of the drive tools available for turret winder applications is tension boost. This function is different than torque boost.Tension boost is not always required. It may be required if the winder inc…
Mar 25
Clarence Klassen commented on Clarence Klassen's blog post Regulator Tuning – Metrics
"In response to the comment by Dr. Birmbaum.
Of course in the steady state, the speed regulator response is less important. 
As you mentioned, the response to disturbances is present and in my experience critical.
Disturbances are seen in web handlin…"
Mar 20
Clarence Klassen posted a blog post
Yellow Submarine Original Artwork copyright 2012Many older drive systems rely on programming tools that will only run on older operating systems. The drive program may run only on an old DOS or Windows operating system. Newer operating systems on mo…
Mar 4
Clarence Klassen posted a blog post
Today most companies expect remote access troubleshooting from suppliers of drive systems. Remote access software over the internet and using Virtual Private Networks (VPN) or web-based remote access provide very useful connectivity.Technically remo…
Feb 25
Clarence Klassen posted a blog post
Yellow Submarine Original Artwork copyright 2012Permanent Magnet (PM) motors stators are very similar to synchronous or induction motor stators. The rotor is made of a shaft with a sandwich of steel layers (laminations) or alternately with a solid c…
Feb 19
Clarence Klassen posted a blog post
Yellow Submarine Original Artwork copyright 2012Synchronous motors stators are very similar to induction motor stators. The rotor is made of a shaft with a sandwich of steel layers (laminations) or alternately with a solid casting. The rotor require…
Feb 11
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