
B-63330EN/03 4.DESCRIPTION OF PARAMETERS
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1483 Lower feedrate limit for the deceleration function based on the acceleration
of fine HPCC
[Input type] Parameter input
[Data type] Real
[Unit of data] mm/min, inch/min, degree/min (machine unit)
[Minimum unit of data] Depend on the increment system of the reference axis
[Valid data range] Refer to the standard parameter setting table (C)
(When the increment system is IS-B, 0.0 - +240000.0)
The deceleration function based on the acceleration of fine HPCC
automatically calculates the optimum feedrate according to the
geometry.
Depending on the geometry, the calculated feedrate may become very
low.
If this occurs, to prevent the feedrate from becoming too low,
deceleration to a feedrate below that specified for this parameter can
be suppressed.
If, however, the override by the deceleration function based on the
cutting load is enabled, the feedrate may become lower than the lower
feedrate limit.
The lower feedrate limit in deceleration based on the acceleration
during circular interpolation in a mode other than fine HPCC mode
can be specified for parameter No. 1491.
NOTE
During involute interpolation, the lower feedrate limit
for the "acceleration clamp in the vicinity of the basic
circle" of involute interpolation automatic feedrate
control is applied.
1491 Lower feedrate limit for the deceleration function based on the acceleration
during circular interpolation (for normal mode)
[Input type] Parameter input
[Data type] Real
[Unit of data] mm/min, inch/min, degree/min (machine unit)
[Minimum unit of data] Depend on the increment system of the reference axis
[Valid data range] Refer to the standard parameter setting table (C)
(When the increment system is IS-B, 0.0 - +240000.0)
The deceleration function based on the acceleration during circular
interpolation automatically calculates the optimum feedrate so that the
acceleration resulting from changes in the travel direction during
circular interpolation does not exceed the allowable acceleration
specified for parameter No. 1665.
If the arc radius is very small, the calculated feedrate may become
very low.
If this occurs, to prevent the feedrate from becoming too low,
deceleration to a feedrate lower than that specified for this parameter
can be suppressed.