Rockwell Automation 7763 Medium Voltage OneGear SMC Flex Motor Controller (10-15 kV) - Manual (Page 69)

Rockwell Automation Publication 7760-UM001D-EN-P - October 2014 69
Programming Chapter 3
Dual Ramp Start The SMC Flex controller provides the user with the ability to select between two
Start settings. The parameters below are available in the Set Up programming
mode. To obtain Dual Ramp control, Ramp #1 is located in the Basic Set Up and
Ramp #2 is located in the Option 2 Input (Dual Ramp).
Table 14 - Dual Ramp Parameters and Options
Parameter Description Option
Set Up The user must select the Set-up programming mode to obtain access to the Dual Ramp parameters. —
Basic Set-up/Starting Mode Set-up as stated in previous pages. —
Option Input 2 (Dual Ramp)
(1)
This allows the user the option to choose between two Soft Start profiles defined by:
1. Start Mode/Ramp Time/Initial Torque, and
2. Start Mode 2/Ramp Time 2/Initial Torque 2.
When this feature is turned on, the ramp time/initial torque combination is determined by a hard
contact input to terminal 15. When this input signal is low, ramp time/initial torque are selected. When
input signal is high, ramp time 2/initial torque 2 are selected. Once the Option 2 input has been set to
Dual Ramp, you must ESC back to the Parameter (File) menu. Re-enter into the Set Up menu to show
both Basic Set Up and Dual Ramp. —
Basic Set Up/Start Mode
(2)
This selects the start mode for option #1. —
Basic Set-up/Ramp Time This programs the time period during which the controller will ramp the output voltage up to full voltage
for the first Start set-up. 0...30 s
Basic Set-up/Initial Torque This parameter establishes and adjusts the initial reduced output voltage level for the first Soft Start set-
up. 0...90% locked rotor torque
Dual Ramp/Start Mode 2
(2)
This selects the start motor for option #2. —
Dual Ramp/Ramp Time 2 This programs the time period during which the controller will ramp the output voltage up to full voltage
for the second Start set-up. 0...30 s
(3)
Dual Ramp/Initial Torque 2 The initial reduced output voltage level for the second Start set-up is established and adjusted with this
parameter. 0...90% locked rotor torque
(1) The Dual Ramp feature is available on the standard controller.
(2) Kickstart can be programmed for both start modes.
(3) For ramp times greater than 30 s, set “Ramp Time 2” to zero and program “Start Time 2E” (parameter 130) for the new time. Do not exceed the thermal capacity of the controller.