
B–63503EN–1/01
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
310
<Rapid traverse linear acceleration/deceleration>
Speed
Rapid traverse rate
Time
T: Time constant for linear
acceleration/deceleration
T
T
<Rapid traverse bell shaped acceleration/deceleration>
Speed
Rapid
traverse rate
TIme
T
2
/2
T
2
T
1
T
2
/2
T
1
: Set a time constant used for lin-
ear acceleration/deceleration
T
2
: Set a time for rounding.
Total time=T
1
+ T
2
Time for linear=T
1
– T
2
Time for rounding part=T
2
Set a time when rapid traverse override is 100% . When it is less than
100%, the total time is reduced (constant acceleration method).
Value of T
1
is determined from motor torque. Set a value of T
2
to 24 ms
or 32 ms.
1620
Time constant used in linear acceleration/deceleration or bell–shaped
acceleration/deceleration in rapid traverse for each axis
[Data type] Word axis
[Unit of data] ms
[Valid data range] 0 to 4000
(1)When the bell–shaped acceleration/deceleration in rapid traverse is
provided, set this parameter to time constant T1 used in bell–shaped
acceleration/deceleration in rapid traverse, and set parameter No.1621
to time constant T2.
(2)When the bell–shaped acceleration/deceleration in rapid traverse is
not provided, set this parameter to time constant used in linear
acceleration/deceleration, and set parameter No.1621 to “0”.
Parameter