
4. DESCRIPTION OF PARAMETERS
B–63610EN/01
76
1620
Time constant T or T
1
used for 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
Specify a time constant used for acceleration/deceleration in rapid tra-
verse. When the optional function of bell–shaped acceleration/decelera-
tion in rapid traverse is provided, bell–shaped acceleration/deceleration is
applied in rapid traverse. If the function is not provided, linear accelera-
tion/deceleration is applied.
(1) When the function is provided, set this parameter to time constant T
1
used in bell–shaped acceleration/deceleration in rapid traverse, and
set parameter No.1621 to time constant T
2
.
(2) When the function is not provided, specify a time constant used in
linear acceleration/deceleration.
NOTE
When parameter No.1621 (time constant T
2
used for
bell–shaped acceleration/deceleration in rapid traverse) is
set to 0, linear acceleration/deceleration is applied in rapid
traverse even if the function is provided. In this case, this
parameter stands for a time constant used in linear
acceleration/deceleration in rapid traverse.
<Rapid traverese linear acceleration/deceleration>
Speed
Rapid traverse feed 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