Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 438)

Programming Feedrates
Chapter 18
18-12
To begin and complete a smooth axis motion, the 9/Series control uses an
exponential function curve to automatically accelerate/decelerate an axis.
Your system installer sets the acceleration/deceleration time constant “T”
for each axis in AMP. Figure 18.6 shows axis motion using exponential
Acc/Dec.
Figure 18.6
Exponential Acceleration/Deceleration
Velocity
Time
T T
“F”is the programmed feedrate
“T”is the acceleration/deceleration
time constant
F
18.3.1
Exponential Acc/Dec