Electro-Pneumatic Tension Controllers for Cleveland Motion Controls

ELECTRO-PNEUMATIC TENSION CONTROLLERS
Measure and Control Tension in any Moving Web

GENERAL DESCRIPTION
The CLEVELAND-KIDDER Type UCM Electro-Pneumatic Controllers offer advanced, state-of -the-art tension control technology. Features include a signal printed circuit board design with easily adjustable response circuitry, rapid stop circuitry, stall condition operation, automatic or manual mode operation, bumpless switching between modes, Electric to Pneumatic (E/P) transducer with volume booster, dual air filters, and compact single cabinet or separate cabinet design.

The CLEVELAND-KIDDER Type UCM Controller, when combined with patented CLEVELAND-KIDDER Tension Transducers and an electrically activated brake or clutch, provides a highly responsive, closed-loop control system.

The single printed circuit board contains a regulated DC power supply to the transducers and all necessary circuitry to monitor, control, and compensate the desired tension characteristics in a moving web. Actual web tension is sensed by the transducers, displayed on a tension meter, and compared with the desired tension which is set by the process operator

Because brake or clutch torque is constantly controlled as a function of actual web tension, the closed-loop system compensates for changes in roll diameter, machine speed, and brake or clutch "fade". Compensating circuitry reduces controller gain at critical frequencies, providing stability, while permitting high gain and fast response to allow high operating speeds.

STANDARD FEATURES

Provides transducer excitation and integral tension readouts.
Solid state circuitry with terminal board connection on a single printed circuit card.
Compatible with all CLEVELAND-KIDDER Tension Transducers.
8:1 full scale tension calibration range.
Compensation circuitry for optimizing response and stability during start-up, operation, stall, or manual to automatic operation switching.
Selectable automatic or manual operation.
Electronic to Pneumatic interfacing developed specifically for pneumatic brake or clutch control in web tension applications.
Accessory output 0-10 VDC for tension recorder or remote meter.

PRODUCT BENEFITS

Closed-loop tension control helps to provide consistent product quality.
High system response using patented, negligible displacement transducers minimizes scrap loss.
Industrial quality solid state circuitry reduces down time.
Ease and compactness of installation.
Simple system calibration and start-up.

APPLICATIONS

For use in the measurement and control of web tension on continuous processing machinery applications such as:

-- printing
-- coating

-- slitting
-- punching

-- cutting
-- folding

-- laminating
-- embossing

Typically used in the product of:

-- paper
-- foil

-- cardboard
-- cellophane

-- textiles
-- rubber

-- extensible and photo film
--linoleum