Rockwell Automation MV SMC Flex Motor Controller (for Series K or later) - Manual (Page 14)

4 Rockwell Automation Publication 1560E-UM051F-EN-P - June 2013
Chapter 1 Product Overview
Selectable Kickstart
(2)
Selectable kickstart provides a power boost at start-up that is user-adjustable from
0 to 90% of locked rotor torque. The additional power helps motors generate
higher torque to overcome the resistive mechanical forces of some applications
when they are started. The selectable kickstart time is user-adjustable from 0.0 to
2.0 seconds.
Figure 2 - Selectable Kickstart
Current Limit Start
(2)
This starting mode provides a true current limit start that is used when limiting
the maximum starting current is necessary. The Current Limit level is
user-adjustable from 50% to 600% of the motor’s full-load ampere rating, and the
current limit time is user-adjustable from 0 to 30 seconds. Once the MV SMC
Flex controller senses that the motor has reached the up-to-speed condition
during the current limit starting mode, the output voltage automatically switches
to full voltage and the bypass contactor is closed.
Figure 3 - Current Limit Start
(2) Kickstart is also available with Current Limit Start, Dual Ramp Start and Linear Acceleration.
Kickstart
100%
Initial
Torque
Start
Time (seconds)
Run
600%
Percent
Full Load
Current
Start
Time (seconds)
50%