Rockwell Automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE - Manual (Page 109)

Application Profiles for the SMC Dialog Plus Controller 4-27
Figure 4.26 Power Walk with Soft Start and Soft Stop Option
Problem: A power walk in 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 on the belt. Several power
walks were installed in the airport, and each required its
own soft starter. A controller that could be quickly
replaced and adjusted was required. Also, panel space
was limited.
Solution: The SMC Dialog Plus controller with the Soft Stop
option was installed. An 8-second soft start and a 12
second soft stop were programmed into the controller,
facilitating a controlled start and stop. During periods
when the walk was unloaded, the SMC Dialog Plus
controller’s built-in Energy Saver feature reduced the
voltage to the motor. The built-in overload protection
eliminated the need for a separate overload relay, thereby
saving panel space. In the event that a control module
needed replacement, one could be quickly plugged in.
The same control module was used for all applications,
minimizing spare parts requirements.
240 Volts
15 HP
Motor