Rockwell Automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE - Manual (Page 32)

SMC-2 Smart Motor Controller 2-13
Figure 2.15 Power Walk with Soft Start and Soft Stop Option
Problem: A power walk at an airport required a soft start to prevent
damage to the drive chain gearbox on start-up. A soft
stop was also required in case the power walk would b
shut off while people were still on the belt. There would
be multiple units at the site, and a controller that could be
quickly installed and adjusted was required.
Solution: The SMC-2 controller with the Interface option was
designed into the system. A 10-second soft start with the
Energy Saver enabled was selected. A 10-second soft
stop was also selected. This allowed the power walk to
have a controlled start and stop. During periods where
the walk was unloaded, the SMC-2 controller Energy
Saver reduced the voltage to the motor, minimizing the
magnetic losses of the motor.
240 Volts
15 HP
Motor