
4. DESCRIPTION OF PARAMETERS
B–63610EN/01
78
Speed
T
Time
T : Total time. it is constant irrespective of feed rate.
(Time constant is constant).
The curve corresponds to that T
1
= T/2 and T
2
= T/2 set in pa-
rameter No.1620 and 1621.
Bell–shaped acceleraton/deceleration after cutting feed interpolation
1623 FL rate of exponential acceleration/deceleration in cutting feed for each axis
[Data type] Word axis
[Unit of data]
[Valid data range]
Valid data range
ncremen
sys
em
n
o
a
a
IS-A, IS-B IS-C
Millimeter machine 1 mm/min 0,6 to 15000 0,6 to 12000
Inch machine 0.1 inch/min 0,6 to 6000 0,6 to 4800
Rotaion axis 1 deg/min 0,6 to 15000 0,6 to 12000
Set the lower limit (FL rate) of exponential acceleration/deceleration in
cutting feed for each axis.
NOTE
Except for special applications, this parameter must be set
to 0 for all axes. If a value other than 0 is specified, proper
straight lines and arcs cannot be obtained.
1624
Time constant of exponential acceleration/deceleration or bell–shaped accelera-
tion/deceleration or linear acceleration/deceleration after interpolation, in jog
feed for each axis.
[Data type] Word axis
[Unit of data] ms
[Valid data range] 0 to 4000(exponential acceleration/deceleration in jog feed)
0 to 512 (linear or bell–shaped acceleration/deceleration after
interpolation in jog feed)
Set the time constant used for exponential acceleration/deceleration,
bell–shaped acceleration/deceleration or linear acceleration/deceleration
after interpolation in jog feed fot each axis. The type to select depends
on the settings of the parameters CTLx, CTBx, and JGLx (Nos. 1610#0,
#1, and #4).