Rockwell Automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE - Manual (Page 87)

Application Profiles for the SMC Dialog Plus Controller 4-5
Figure 4.4 Tumbler with Accu-Stop Option
Problem: A tumbler drum used in a hide processing plant required
a controlled acceleration to prevent the drive chain from
breaking. In addition, it was desirable to minimize the
loading and unloading time. The drum would coast for a
long period of time before stopping for unloading.
Previously, a soft start with electronic brake had been
applied. This method still required excessive jogging for
loading and unloading, which resulted in extended
production times. It also required additional panel space
and wiring for the brake. Consequently, higher
installation costs were incurred.
Solution: The SMC Dialog Plus controller with the Accu-Stop
option was installed. This allowed the drum to b
positioned for loading using the Preset Slow Speed. For
unloading, the drum was rotated at Preset Slow Speed
and then accurately stopped. This increased the
productivity of the loading/unloading cycle. The SMC
Dialog Plus controller required no additional panel space
or power wiring, facilitating a smooth retrofit and
reducing the installation costs.
Tumbler Drum
Loading Door
Motor
Drive Chain
480 Volts
150 H