2015 Designer's Notebook - 19

Tension Controls

VERSATEC® Dancer Control Applications
Control Magnetic Particle Clutches and Brakes

Control Air Brakes and Clutches, or AC and DC Drives

The VERSATEC provides closed loop tension control of
a moving web in any dancer application. It measures the
position of the dancer arm using a MAGPOWR DFP or
DFP-2 Position Sensor, and commands the required output
adjustment to achieve and maintain the desired position. It
offers simple setup and operation at the touch of a finger,
and conveniently displays operating and setup information
on a multi-line alphanumeric display.
The VERSATEC program is optimized for torque or speed
control applications, and will control a brake, clutch, AC
or DC drive, or servo to maintain the dancer position. A
simplified two-step tuning method provides stable operation
through the entire roll. Use of the optional US-2 Ultrasonic
Sensor allows diameter compensation for optimum control
response through the entire roll, even with large roll ratios.
This is an important new feature, since controllability
changes dramatically with roll diameter changes. This
feature is not available in other dancer controls.
Dancer position adjustments may be made through the
VERSATEC keypad, through remotely mounted buttons, or
through a PLC. Automatic centering maintains the desired
dancer arm position automatically through the entire roll.
Stop Multiplier and Inertia Compensation provide additional
stopping torque during machine stops to prevent slack
webs. And, the Tension Output can be used to adjust dancer
loading, allowing taper tension in rewind dancer applications
and automatic tension changes as you change setups.

Features
Provides closed loop control of tension in any dancer
application
Optimized for torque or speed control operation
Simple two-step tuning provides stable operation
through the entire roll
Automatic centering maintains dancer arm position
through the entire roll
Optional ultrasonic sensor allows diameter compensation
for optimum response even with large roll ratios
Multi-line display indicates actual output level and
diameter simultaneously
Inertia Compensation stops large unwind rolls
Tension Output provides remote control of
dancer loading
Provides adjustable taper tension in rewind applications

Tension Controls

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2015 Designer's Notebook - Table of Contents
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