
4.DESCRIPTION OF PARAMETERS B-63950EN/02
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For bell-shaped acceleration/deceleration
Speed
Rapid traverse
(Parameter No. 1420)
Time
T
1
T
2
T
2
T
2
T
2
T
1
T
1
: Setting of parameter No. 1620
T
2
: Setting of parameter No. 1621 (However, T
1
≥ T
2
must be
satisfied.)
Total acceleration (deceleration) time : T
1
+ T
2
Time for linear portion : T
1
- T
2
Time for curve portion : T
2
× 2
1621
Time constant T2 used for bell-shaped acceleration/deceleration in rapid
traverse for each axis
[Input type] Parameter input
[Data type] Word axis
[Unit of data] msec
[Valid data range] 0 to 1000
Specify time constant T2 used for bell-shaped acceleration/
deceleration in rapid traverse for each axis.
1622 Time constant of acceleration/deceleration in cutting feed for each axis
[Input type] Parameter input
[Data type] Word axis
[Unit of data] msec
[Valid data range] 0 to 4000
Set the time constant used for exponential acceleration/deceleration in
cutting feed, bell-shaped acceleration/deceleration after interpolation
or linear acceleration/deceleration after interpolation in cutting feed
for each axis. Except for special applications, the same time constant
must be set for all axes in this parameter. If the time constants set for
the axes differ from each other, proper straight lines and arcs cannot
be obtained.