Rockwell Automation SMC-Flex, User Manual

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Product Overview 1-3
Selectable Kickstart
This feature provides a boost at startup to break away loads that
require a pulse of high torque to get started. This is intended to
provide a pulse of current that is selectable from 0…90% of locked
rotor torque. Selectable kickstart is user-adjustable from
0.0…2.0 seconds.
Figure 1.2 Selectable Kickstart
Current Limit Start
➀
This starting mode provides a true current limit start; it is used when
limiting maximum starting current is necessary. The Current Limit
level is user-adjustable from 50…600% of the motor full load ampere
rating; and the current limit time is user-adjustable from 0…30
seconds. If the SMC-Flex controller senses that the motor has reached
the up-to-speed condition during the current limit starting mode, the
internal bypass contactor will be pulled in.
Figure 1.3 Current Limit Start
➀
Kickstart is also available with Current Limit Start.
Start Run
100%
Initial
Torque
Percent
Voltage
Time (seconds)
Selectable Kickstart
Soft Stop
Coast-to-rest
Soft Stop
Start
600%
50%
Percent Full
Load Current
Time (seconds)