Cleveland Motion Controls WebPro Winder Tension ControllerMWP-12664 REV BA - Manual (Page 5)

AO-70171
4
Revision BA
WebPro Winder Tension Controller
General Description
The WebPro Digital Tension Controller is part of a closed loop tension control system with transducer
feedback. The Controller continuously controls the web tension to the TENSION SET POINT value and
displays the true web tension on an LCD screen, either as a percentage or in engineering units. The
screen will display the tension applied to each transducer separately by pressing the < LEFT tension or >
RIGHT tension key. The sum of the LEFT and RIGHT tensions is displayed when the < > TOTAL key is
pressed. The Controller will control to the TOTAL tension value even when the LEFT or RIGHT tension is
being displayed. The Controller also has a dual range tension indication feature.
The measurement of actual web tension is made by sensing, with strain gauge transducers (sometimes
referred to as "load cells"), the force on a sensing roller caused by the tension in the web. The electrical
signal from the transducers is a combination of tension force and sensing roller weight. The weight of the
sensing roller is zeroed out electrically, leaving the tension force only to be displayed on the screen.
For wide web applications two transducers are recommended, one on each end of the sensing roller; for
narrow web, wire, cable and filaments one transducer can usually be used.
Winder Control Systems
The Winder Controller is designed for four
application areas;
• surface winder in speed trim control,
• clutch winder,
• center winder in speed control,
• center winder in torque control,
both center winders have a taper feature.
All drive electronics MUST be isolated from
any supply voltage and the electronics
common (0V) should be grounded. If the
drive electronics are not isolated consult
CMC Inc BEFORE use.
1 0 0 N
A motor driven center winder with taper feature
0 0 1 N
A surface winder
1 0 0 N
A clutch winder