Rockwell Automation 1560E SMC Flex Smart Motor Controller - Manual (Page 17)

Product Overview 1-7
Linear Speed Acceleration and Deceleration
The SMC-Flex has the ability to control the motor speed during starting
and stopping maneuvers. A tachometer signal (0 to 5V DC) is required to
perform this start mode. The start time is selectable from 0 to 30 seconds
and determines the time the motor will ramp from 0 speed to full speed.
Kickstart is available with this option.
Motor
Speed
100%
Time (seconds)
Start Run Stop
Motor
Speed
100%
Time (seconds)
Start Run Stop
Figure 1.7 – Linear Speed Acceleration
Linear deceleration does not need to be used, even if linear acceleration is
used. The stop time can be programmed for 0 to 60 seconds. Linear
deceleration cannot brake the motor/load and reduce the stop time.
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.
Linear Deceleration 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