TITLE
B-63173EN-1/02
EDIT
DATE DESIG. DESCRIPTION
ower
ate i-
Look-ahead feed-forward control
Connection manual (function)
DRAW.NO. CUST.
SHEET
01
990624 New design
This parameter is used to set an acceleration for linear acceleration/deceleration before
interpolation in the look-ahead feed-forward control mode. In this parameter, set the time
(time constant) used to reach the speed set in parameter No.1770.
NOTE
1 When 0 is set in parameter No.1770 or parameter No.1771, linear
acceleration/deceleration before interpolation is disabled.
2 In parameters No.1770 and No.1771, set values that satisfy the following:
(Parameter No.1770) / (Parameter No.1771) ≥ 5
1784
Speed when overtravel alarm has generated during acceleration/deceleration
before interpolation
[Data type] Word
[Unit of data]
[Valid data range]
Deceleration is started beforehand to reach the feedrate set in the parameter when an
overtravel alarm is generated (when an axis reaches a limit) during linear
acceleration/deceleration before interpolation. By using this parameter, the overrun
distance that occurs when an overtravel alarm is output can be reduced.
WARNING
The control described above is applicable only to stored stroke check 1.
NOTE
1 When 0 is set in this parameter, the control described above is not executed.
2 Use type-B linear acceleration/deceleration before interpolation (by setting bit 0
(FWB) of parameter No.1602 to 1).
Valid data range
Increment system Unit of data
IS-A, IS-B IS-C
Millimeter machine 1mm/min 6∼15000 6∼12000
Inch machine 0.1inch/min 6∼6000 6∼4800