AccuWeb EVO 150, Instruction Manual

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EVO 150 Controller 44
Appendix 7 / Oscillation Function
This optional software feature allows the user to perform web oscillation electronically, thus
replacing the mechanical hardware normally required for this function.
Web oscillation is primarily used for processing materials that need oscillation to reduce
gauge-band build-up on re-wind rolls.
Web oscillation is accomplished by electronically moving the guide point to oscillate the web over
a wide range of speeds and travel distance. The oscillation speed and travel can be programmed
within the following ranges:
•
Oscillation speed: 0 to 25.5 inches per minute
•
Oscillation travel: 0 to 7.50 inches (or
±
linear actuator stroke)
When the oscillation function is turned off the guide point is fixed. The system moves the web as
needed to keep the web’s edge or centerline aligned with the fixed guide point.
When the oscillation function is turned on the guide point moves at a programmed speed over a
programmed travel distance. The system moves the web continuously to keep the web’s edge or
centerline aligned with the moving guide point.
The AUXILIARY input can be used to turn the oscillation function on and off (parameter 52, option
3 or 4).
An additional oscillation mode (parameter 31, option 4) permits oscillation without using an edge
sensor. This mode continuously oscillates the actuator between its In and Out end-of-travel limits.
Oscillation speed is controlled by parameter 7. If using an actuator that has potentiometer
feedback (MT, SF, and HF) the oscillation distance may be adjusted by setting the In and Out
end-of-travel limits (parameters 9 and 10). Oscillation distance is fixed for actuators that have limit
switches (MM, MME, MN, and MNE). MX-series actuators do not operate in this oscillation mode.
Note: Refer to page 21 for more information about setting controller parameters.