Rockwell Automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE - Manual (Page 17)

STC Starting Torque Controller 1-9
Figure 1.11 Chain Conveyor with Torque Control
Problem: A chain conveyor is used for transporting bundles of
paper. Due to the high starting torque the conveyor motor
applies to the chain during startup, the chain was
breaking on an average of once per day. Maintenance of
the conveyor caused interruptions in the production
schedule.
Solution: The STC controller was installed to reduce the starting
torque on the motor and mechanical system. This
resulted in less downtime and higher productivity. The
STC controller was easy to retrofit due to its compact
size and feed through wiring.
480 Volts
7.5 HP
Bundle Bundle
Chain
Motor