Polyspede

Our legendary OC2 series has been revamped with improved features and was launched in June 2002.
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OC2B is an open/closed chassis motor control that has been designed as building block solid state regulated power unit. OC2B uses state of the art control circuitry which can be used by itself, by wiring in the provided speed potentiometer as a straightforward speed regulated control or can be incorporated into much more sophisticated system designs contactor operation, external speed programming and tach feedback etc.

Auto-Wind

The Polyspede Auto-Wind constant tension center-wind drive system automatically torque-programs a DC motor-driven center winder to keep tension constant as roll size increases.

By using Polyspede's inverse function generator circuitry there is no need for mechanical sensing devices to measure roll size or dancer mechanisms to sense web tension. This is a big advantage when handling delicate materials.

Auto-Wind is available in two basic types.

Auto-Wind-1 is for use on process lines operating with a maximum 3 to 1 line speed range while building rolls up to 10 times the core size.

Auto-Wind-2 is for lines operating with a line speed range of up to 10 to 1. It can build rolls up to 10 times the core size. A roll of 20 times the core size can be built if the line speed range is limited to 5 to 1.

On-board potentiometers and a comprehensive instruction manual allow precise calibration in the field.

Application Center Wind Drive System

By monitoring the line speed and winder feedback signals, the Auto-Wind-2 circuitry automatically programs the torque reference signal to the winder motor control. With a constant line speed, the roll must slow down as it builds. The torque in the winder motor is automatically increased to maintain the tension level as set by the tension adjust potentiometer. With Auto-Wind-1 the winder feedback tachometer is not required. Instead the Y input is taken from the winder motor armature voltage.

Auto-Wind Adjustments

Designation	Function
Y Cal	Calibrates winder feedback signal (Y input)
X Cal	Calibrates line speed signal
Bias	Compensates for frictional machine losses
Stall Tens	Sets desired web tension at zero line speed
Tension	External adjustment sets desired web tension level
Max Tens	Limits maximum tension capability
Taper	Sets a gradual decrease in tension as the roll builds (if required)
Torq	Limits the maximum Torque signal output to the winder motor control
Accel (WK2)	Compensates for motor and load inertia during acceleration (E1483-03 and E1484 assemblies only)
Decel (WK2)	Compensates for motor and load inertia during deceleration (E1483-03 and E1484 assemblies only)
Acc Time	Permits a winder soft start for systems running at only one line speed (E1483-01 and 02 assemblies only)
IR	Compensates for decreases in material tension with roll build up due to increased motor IR losses (E1483 assemblies only)
Trans	Dictates at what slow line speed the control will automatically transfer from stall tension to running tension (E1484 assemblies only)

Auto-Wind boards are not recommended for field installation by the customer. Consult Polyspede for complete engineered systems.

Volts/Hertz, Sensorless
Vector and Flux Vector
drives ranging
from 1/4 to 200 HP.

Non Regenerative
and Regenerative
drives from 1/6
to 500 HP.

AC motors from Baldor,
AO Smith, Lincoln,
Marathon and Reliance.

DC motors from Baldor
and AO Smith.