Rockwell Automation 1398-PDM-xxx IQ Master Version 3.2.4 for IA-2000 and IQ-5000 Positioning Drive Modules, IQ-55 - Manual (Page 382)

360 Application Examples • SmartBelt Application
Publication 1398-PM601A-EN-P — October 2000
APPENDIXES
Application Examples
SmartBelt Application
Description
In packaging applications, products are often transported in random fashion from a filling or wrapping
operation to a final cartoning machine on a conveyor belt. Many packaging machines require these
products to be positioned to a moving reference point (flights, overhead sweeps, etc.). A “smart servo
belt” driven by an Allen-Bradley ULTRA Plus or IQ-Series Positioning Drive Module and brushless
servo motor will provide uniform spacing to match the moving reference point. The servo controlled
belt follows the main machine drive (master), so motion is relative to the machine. The ULTRA Plus or
IQ monitors the position of the flights. When a product is detected, a correction distance is calculated
and the correction move is performed. The correction move is relative to the machine motion and is
added to the speed required to follow the master. This ensures the product will be positioned correctly
relative to the flight.
Advantages of a Servo System
•
Motion follows machine speed automatically using electronic gearing
• Flexibility of a programmable positioning system allows different product sizes without mechani-
cal changes
ATTENTION
!
These sample programs are included for illustration purposes only.
They do not include the fault handling logic or safety considerations
necessary for an actual machine operation.