PDF Fanuc Power Mate i-D/H Parameter Manual

4. DESCRIPTION OF PARAMETERS
B63180EN/02
54
CAUTION
When 0 is set in parameter No.1770 or parameter No.1771,
linear acceleration/deceleration before interpolation is
disabled.
1771
Parameter 2 (for advanced preview feed forward) for setting an acceleration for
linear acceleration/deceleration before interpolation (maximum machining speed
during linear acceleration/deceleration before interpolation)
[Data type] Word
[Unit of data] 1 ms
[Valid data range]
0 to 4000
This parameter is used to set an acceleration for linear acceleration/
deceleration before interpolation in the advanced preview feed forward
mode. In this parameter, set the time (time constant) used toreach the
speed set in parameter No.1770.
CAUTION
1 When 0 is set in parameter No.1770 or parameter No.1771,
linear acceleration/deceleration before interpolation is
disabled.
2 In parameter Nos.1770 and 1771, set values that satisfy the
following:
Parameter No.1770/Parameter No.1771y5
1784
Feedrate at overtravel alarm occurrence during linear acceleration/deceleration
before interpolation
[Data type] Word
[Unit of data]
[Valid data range]
Increment system
Unit of data
Valid data range
I
ncremen
t
sys
t
em
U
n
it
o
fd
a
t
a
IS-A, IS-B IS-C
Millimeter machine 1 mm/min 6 to 15000 6 to 12000
Inch machine 0.1 inch/min 6 to 6000 6 to 4800
Deceleration is performed beforehand so that the feedrate set in the
parameter is set when an overtravel alarm is issued (when the limit is
reached) during linear acceleration/deceleration before interpolation.
With this parameter, the amount of overrun can be reduced when an
overtravel alarm is issued.
CAUTION
The control mentioned above is effective only for stored
stroke check 1.

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