Rockwell Automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE - Manual (Page 92)

4-10 Application Profiles for the SMC Dialog Plus Controller
Figure 4.9 Bandsaw with Soft Start and Slow Speed with Braking Option
Problem: A bandsaw required 25 minutes to coast to a stop to
routinely change the saw blade. A braking package was
required to reduce the stopping time. Other methods
using dedicated braking devices were investigated but
were unacceptable because of overly complex
installation. These methods required additional panel
space for the brake module, brake contactors, and timers.
Because of potential alignment problems, it was
dangerous to bring the saw up to full speed afte
installing a new blade.
Solution: The SMC Dialog Plus controller with the Slow Speed
with Braking option was installed. It provided a Preset
Slow Speed, allowing the saw blade tracking to b
inspected before the motor was brought to full speed.
The braking option of the SMC Dialog Plus controlle
did not require additional panel space or DC braking
contactors. Starting and stopping control was furnished
in a single modular unit, providing ease of installation.
Saw Blade
Motor
High Inertia Wheels
Carriage
Log
480 Volts
300 HP