Instruction manual

MICRO 4000

NET Controller

Appendix 3 / Oscillation Function (Optional)

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).

The rate of oscillation can also be controlled by the analog inputs (parameter 31, option 2 or 3). In

this mode the oscillation rate is proportional to input voltage. When the input voltage is at the

lowest end of its range, the oscillation rate will be at its minimum value (set by parameter 53).

When the input voltage is at the highest end of its range, the oscillation rate will be at its highest

value (set by parameter 33).

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, or by an external analog (parameter 48, option 2

or 3) or fieldbus input (parameter 48, option 1). If using an actuator that has potentiometer

feedback (MT, SF, HL, HF, HT, and UHT) 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 17 for more information about setting controller parameters.