Rockwell Automation 1560E SMC Flex Smart Motor Controller - Manual (Page 18)

1-8 Product Overview
%
5-"
%.
0
Starting Modes (cont.) 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 to 60
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.
Coast-to-rest
Soft Stop
Kickstart
Initial
Torque
100%
Percent
Voltage
Time (seconds)
Start Run Soft Stop
Coast-to-rest
Soft Stop
Kickstart
Initial
Torque
100%
Percent
Voltage
Time (seconds)
Start Run Soft Stop
Figure 1.8 – 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, thirty seconds maximum for each operation. A stopping operation
counts as a start for purposes of thermal capacity calculations.
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.
A T T E N T I O N A T T E N T I O N