Dual Ramp Start; Full Voltage Start - Rockwell Automation SMC Dialog Plus User Manual

1-4 Product Overview
Starting Modes (cont.)

Dual Ramp Start

①
This starting mode is useful on 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 1.4 Dual Ramp Start
Percent
Voltage
100%
Initial
Torque #2
Initial
Torque #1

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 1.5 Full Voltage Start
100%
Percent
Voltage
①
Dual Ramp Start is available only with the standard controller.
Ramp #2
Ramp #1
Start #1
Start #2
Time (seconds)
Time (seconds)
Run #1
Run #2