
B-63943EN-1/02 7.FEEDRATE CONTROL/ACCELERATION AND DECELERATION CONTROL
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Parameter
1620
Time constant T or T1 used for linear acceleration/deceleration or
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 4000
Specify a time constant used for acceleration/deceleration in rapid
traverse.
[Example]
For linear acceleration/deceleration
Speed
Rapid traverse rate
(Parameter No. 1420)
Time
TT
T : Setting of parameter No. 1620
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