
7.FEEDRATE CONTROL/ACCELERATION AND DECELERATION CONTROL B-63323EN-1/03
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The method of deceleration based on the feedrate difference differs
depending on the setting made for parameter FNW (bit 6 of No. 1517).
If "0" is set, the largest feedrate that does not exceed the permissible
feedrate difference set for parameter No. 1478 is assumed to be the
deceleration feedrate. In this case, the deceleration feedrate differs if
the travel direction differs, even if the shape is the same.
If "1" is set, the feedrate is determined not only with the condition that
the permissible feedrate difference and permissible acceleration on
each axis are not exceeded, but also that the deceleration feedrate is
constant regardless of the travel direction if the shape is the same.
If 1 is set for this parameter, the deceleration feedrate determined with
the feedrate difference or acceleration may be up to 30% lower than
that determined if 0 is set.
Override to a determined feedrate
The following gives the specifications of override to a feedrate
determined by functions such as deceleration based on feedrate
difference in look-ahead acceleration/deceleration before interpolation
and deceleration based on acceleration rate in fine HPCC.
Deceleration to
500 mm/min
Deceleration to
354 mm/min
(Example)
@
If parameter FNW (bit 6 of No. 1517) = 0 and the
@
permissible feedrate difference = 500 mm/min (on all axes)
Deceleration to
354 mm/min
Deceleration to
354 mm/min
(Example)
@
If parameter FNW (bit 6 of No. 1517) = 1 and
@
permissible feedrate difference = 500 mm/min (on all axes)