Variable Acceleration Paper Unwind Software Diagram New Reel Tension Set Point Diameter Tension Torque Paper Speed (MPM) Diameter Unwind Speed ( RPM) Rewind Acceleration (MPM / Sec) RADs / Sec2 PID Load Cell Signal K x Diameter Paper Density Motor Constant Torque Reference Diameter Weight Inertia Variable Acceleration Torque Width Volume Select for Tension Control Shell Diameter Diameter K2 Fixed Acceleration Torque Shell Inertia Fixed Acceleration Torque Motor Inertia Select for Threading Speed Trim Line Speed Reference RPM Reference Speed Reference Diameter

Paper Rewind Software Diagram Encoder F/B S-Ramp Acceleration Rate Line Speed Ref. Deceleration Rate SEA TEA Power Stage Inch Accl. / Dccl. Rate Accl. Rate Line Speed Set Point Accl. / Dccl. Torque Speed Limit Threshold R/W Drum Inertia RS485 To Unwind Drive RS485 Unwind RPM

Paper Machine Drive Software Diagram Cascaded speed reference to succeeding sections Incr Draw Ratio Decr Speed Reference to speed controlled helper drives Crawl Reference Section Start Ramp Roll RPM Motor RPM MPM MPM To section master precision reference Speed Reference from previous section X + + ÷ X Roll Diam xPI Gear Ratio Bypass Slack Out Load Cell Signal PID From section master torque demand Bumpless Transfer Torque reference to torque controller helper drive Incr Tension Reference X Decr Incr Percent Load Share Decr

Paper Machine Drive Software Diagram Easy to use software development tool (DPL) allows sophisticated control software to be written for specific applications Data entered and stored in the drive in common engineering units can be used for calibration and set up. High priority programming tasks allow the use of real-time control algorithms Accurate results from true floating point arithmetic eliminates rounding errors