Rockwell Automation WebPak 3000 DC Drive Application Workbook Version 1.1 - Manual (Page 79)

Using the WebPak 3000 Drive for Web Applications: The Basics A-1
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PPENDIX
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Using the WebPak 3000 Drive for
Web Applications: The Basics
Drive system requirements for web-handling process lines cover applications which
require both simple speed regulators for pull rolls and complex tension regulators for
unwinds and winders with wide ranges of diameter change and tensions. The
WebPak 3000 DC drive provides a common drive platform to be used for all sections
of the process line without the need for an external controller.
A web transport line can be divided into three section groupings:
• Entry zone
• Process zone
• Exit zone
In its most basic configuration, the total line could be comprised of three sections:
• An unwind in the entry zone
• A pull roll in the process zone
• A winder in the exit zone
Contrasting this basic line with a more complex process, section count in each of the
three zones could be three or more. A sample section line is shown in Table A.1.
The unwind and winder spindle drives on both the basic three-section line and the
complex 19-section line are typically variable diameter sections. All other sections are
constant diameter.
Table A.1 – Sample Section Line
Entry Zone Process Zone Exit Zone
Unwind Spindle A Coater Applicator Winder Pull Roll
Unwind Spindle B Coater Backer Winder Spindle A
Unwind Turret Index Coater Metering Winder Spindle B
Unwind Pull Roll Vacuum Pull Roll Winder Turret Index
Dryer Exit Roll
Aux. Unwind Spindle A
Aux. Unwind Spindle B
Aux. Unwind Turret Index
Laminator Top Roll
Laminator Bottom Roll
Laminator Exit Pull Roll