319
Appendix B
Estimating Times and Pulses for
Acceleration/Deceleration
The acceleration time is the time it takes to reach the maximum speed from a speed of “0” or from the initial speed.
The deceleration time is the time from the maximum speed to “0” or to the initial speed. Accordingly, the time it
takes to reach the target speed, the time from the target speed to “0,” and the time it takes to reach the initial speed,
as well as the number of pulses for each of them, can all be found by means of the formulas shown below.
Speed (pps)
Time (ms)
P
D
P
U
V
M
V
H
V
L
0
T
U
T
D
T
AU
T
AD
V
M
:
Maximum speed setting
T
U
:
Acceleration time from initial speed (V
L
) to target speed (V
H
)
T
D
:
Deceleration time from target speed (V
H
) to initial speed (V
L
)
T
AU
:
Acceleration time setting
T
AD
:
Deceleration time setting
Using the above abbreviations, the number of pulses for the acceleration and deceleration time can be calculated
as follows:
T
U
=
(V
H
-- V
L
)
T
D
=
Acceleration pulses (P
U
) =
(V
H
+ V
L
) x T
U
2
(V
H
+ V
L
) (V
H
-- V
L
)
=
T
AU
2 x (V
M
-- V
L
)
(V
H
+ V
L
) x T
D
2
(V
H
+ V
L
) (V
H
-- V
L
)
=
T
AD
2 x (V
M
-- V
L
)
Deceleration pulses (P
D
) =
(V
M
-- V
L
)
T
AU
(V
H
-- V
L
)
(V
M
-- V
L
)
T
AD
Summary of Contents for CS1W-NC113 - REV 02-2008
Page 1: ...CS1W NC113 213 413 133 233 433 Position Control Units ...
Page 2: ...iv ...
Page 4: ...vi ...
