Rockwell Automation MV SMC Flex Motor Controller (for Series K or later) - Manual (Page 15)

Rockwell Automation Publication 1560E-UM051F-EN-P - June 2013 5
Product Overview Chapter 1
Dual Ramp Start
(3)
This starting mode is useful for applications that have varying loads (and
therefore varying starting torque requirements). Dual Ramp Start allows the user
to select between two separate Soft Start profiles with separately adjustable ramp
times and initial torque settings.
Figure 4 - Dual Ramp Start
Full Voltage Start
This starting mode is used for applications requiring across-the-line starting. The
output voltage to the motor will reach full voltage within 1/4 second.
Figure 5 - Full Voltage Start
(3) Dual Ramp Start is available only with the standard controller.
Percent
Voltage
Start #1
Time (seconds)
Start #2
Ramp #2
Ramp #1
Start #2
Run #1
Run #2
Initial Torque #1
Initial Torque #2
100%
Percent
Voltage
Time (seconds)
100%