
4.DESCRIPTION OF PARAMETERS B-63950EN/02
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1772
Acceleration change time of bell-shaped acceleration/deceleration before
interpolation
[Input type] Parameter input
[Data type] 2-word path
[Unit of data] msec
[Valid data range] 0 to 200
Set an acceleration change time of bell-shaped acceleration/
deceleration before interpolation (time for changing from the state of
constant feedrate (A) to the state of constant acceleration/deceleration
(C) at the acceleration rate calculated from the acceleration rate set in
parameter No. 1660: time of (B) in the figure below).
Feedrate in tangent direction
Optimum inclination is automatically
calculated from the setting of parameter
No. 1660.
Time set by parameter No. 1772
(A) (B) (B) (B) (B)(A) (A)(C) (C)
1783
Maximum allowable feedrate difference for feedrate determination based on
corner feedrate difference
[Input type] Parameter input
[Data type] Real axis
[Unit of data] mm/min, inch/min, degree/min (machine unit)
[Minimum unit of data] Depend on the increment system of the applied axis
[Valid data range] Refer to the standard parameter setting table (C)
(When the increment system is IS-B, 0.0 to +240000.0)
If a feedrate component change for each axis exceeding the value set
in this parameter occurs at the joint of blocks, the feedrate
determination function based on corner feedrate difference finds a
feedrate not exceeding the set value and performs deceleration by
using acceleration/deceleration before interpolation. Thus, a shock
to the machine and machining error at a corner can be reduced.