Fanuc Power Mate i-D/H Operator Manual

3. HIGH–SPEED RESPONSE
FUNCTION
PROGRAMMING
(Power Mate i–H)
B–63174EN/03
257
CAUTION
A servo system delay value and the number of accumulated
pulses for acceleration/deceleration are not reflected in the
position reached where the signal +Jn/–Jn is set to 0. This
means that the maximum overrun distance L from the actual
machine position when the signal is set to 0 is as follows:
L=F* (12+2*m+n+(t
C
/2)+t
S
)/60000
F: Feedrate (mm/min)
m: Ladder scan time (msec)
n: DI receiver delay (msec)
L: Distance (mm)
t
C
: Acceleration/deceleration time constant (msec)
t
S
: Servo time constant (msec) (1/loop gain)
Example: By adding the following motion program and ladder
program, control similar to that for manual continuous
feed in the normal mode can be exercised in the
high–speed response mode:
Example of motion program
O8000 G91 G135.1 X0 F1000
%
A
B
G100.0
G102.0
G100.0
G102.0
G228.0
Example of ladder program
If the motion program and ladder above are added, the tool moves
continuously on the first axis in the + direction when the signal A is
set to 1. When the signal A is set to 0 during movement, the tool stops
on the first axis. When the signal B is set to 1, the tool moves
continuously on the first axis in the – direction. When the signal B is
set to 0 during movement, the tool stops on the first axis.
Note) (1) The axis name of the first axis is X.
(2) It is supposed that axis operation conditions (such as
interlock and overriding) are set beforehand.

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