A stiff speed regulator in the drums can provide a multitude of benefits. Diagnostic: A stiff drum regulator can isolate control problems to pre-drum regulation or post-drum regulation. Pre-drum regulation refers to the unwind, guide or lead-in roll, any paper rolls or bowed rolls. Post-drum regulation refers to the rear drum, front drum and rider roll. The optimal way to stiffen the drum

In control design, most engineers focus on programming a proper functioning machine but many times neglect to look at regulation during failures. This disregard could create not only safety issues, but machine and product damage as well. In a recent winder analysis of a Rockwell / Reliance Automax system, a serious programming oversight was found: Upon any drive failure, the machine would