Dual ramp start, Full voltage start – Rockwell Automation 1560E SMC Flex Smart Motor Controller User Manual

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Product Overview

1-5

Dual Ramp Start

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.

Percent
Voltage

Initial Torque #1

100%

Ramp #2

Ramp #1

Time (seconds)

Initial Torque #2

Run #2

Start #2

Start #1

Run #1

Percent
Voltage

Initial Torque #1

100%

Ramp #2

Ramp #1

Time (seconds)

Initial Torque #2

Run #2

Start #2

Start #1

Run #1

Figure 1.4 – Dual Ramp Start

Dual Ramp Start is available only with the standard controller.

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 ¼ second.

100%

Percent
Voltage

Time (seconds)

100%

Percent
Voltage

Time (seconds)

Figure 1.5 – Full Voltage Start