Rockwell Automation WebPak 3000 DC Drive Application Workbook Version 1.1 - Manual (Page 91)

Using the WebPak 3000 Drive for Web Applications: The Basics A-13
Machine limits can be mechanical or process related. For example, maximum line
speed could be limited by maximum roll RPM or by the maximum speed at which a
dryer can operate.
Drive limits are set based on optimizing drive steady-state and dynamic performance.
Refer to table A.2.
Table A.2 – Drive Limits
Function Mode Limit Limited By
Maximum Line Speed All Undefined Machine
Minimum Line Speed All 5% of max. Drive
Unwind Core Diameter All 1.0 in min. Machine
Unwind Max Roll Diameter Current 6 x core Drive
Unwind Max Roll Diameter Position 20 x core Drive
Unwind Max Roll Diameter Tension 15 x core Drive
Winder Core Diameter All 1.0 in min. Machine
Winder Max Roll Diameter Current 6 x core Drive
Winder Max Roll Diameter Position 20 x core Drive
Winder Max Roll Diameter Tension 15 x core Drive
Ratio of Core to Full Roll Inertia Current 15 Drive
Ratio of Core to Full Roll Inertia Position 25 Drive
Ratio of Core to Full Roll Inertia Tension 25 Drive
Maximum Tension - Constant
Diameter All Undefined Machine/Drive
Minimum Tension - Constant
Diameter Current 100% of max. Drive
Minimum Tension - Constant
Diameter Position Undefined Machine
Minimum Tension - Constant
Diameter Tension 5% of max Drive
Maximum Tension - Variable
Diameter All Undefined Machine/Drive
Minimum Tension - Variable
Diameter Current 10% of max. Drive
Minimum Tension - Variable
Diameter Position Undefined Machine
Minimum Tension - Variable
Diameter Tension 5% of max. Drive
Maximum Motor Field Range All 6:1 Drive
Dancer Loop Storage Position Undefined Machine/Drive