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A DANCER PRIMER - Maxcess

Maxcess UNIVERSITY CONFERENCE WEEKC ollege of Tension Control 2010 Maxcess InternationalA DANCER PRIMERBRAKEAIRI TO PCONVERTERTENSIONPOSITIONDANCERSENSORLAI RVENTREGULATORPRESSUREDANCERCONTROLLERT here are various methods of automatically controlling tension in a web of material being processed. Thesemethods fall into two general categories, open loop and closed loop. The open loop systems can usually bereduced to some method of roll radius determination, and the programming of torque proportional to radius. Theseinclude follower arms, roll radius computers, ultrasonic roll measuring and manual operation. The other category isclosed loop feedback system.

The dancer being free to move, tends to absorb these changes. The purpose of the dancer arm is the automatic control of the braking torque on the unwind roll to maintain constant web tension.

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