Rockwell Automation 7763 Medium Voltage OneGear SMC Flex Motor Controller (10-15 kV) - Manual (Page 27)

Rockwell Automation Publication 7760-UM001D-EN-P - October 2014 27
Product Overview Chapter 1
Soft Stop
This feature can be used in applications that require an extended coast-to-rest
time. The voltage ramp-down time is user-adjustable from 0…120 seconds and is
adjusted independently from the starting time. The load will stop when the
output voltage drops to a point where the load torque is greater than the
developed motor torque.
Figure 13 - Soft Stop Option
Note: Consult factory if settings over 30 seconds are required. The base rating of
the MV SMC Flex is two starts (or one start/stop combination) per hour,
30 seconds maximum for each operation. A stopping operation counts as a start
for purposes of thermal capacity calculations.
100%
Start Run Soft Stop
Percent
Voltage
Start Run
Time (Seconds)
Initial
Torque
Soft Stop
Soft Stop
Coast-to-Rest
Kickstart
IMPORTANT Soft Stop is not intended to be used as an emergency stop. Such usage may
result in severe injury or death. Refer to the applicable standards for
emergency stop requirements.