Fagor 8025 GP, Operating Manual

Page: 416 / 423

Page Chapter: 3 Section:
5
NON-SERVO CONTROLLED
OPEN LOOP MOTORS
3.3 BASIC OPERATION
Whenever an axis is to be moved, the CNC behaves as follows:
1.- Sets the "Brake" output high
(24V) for the electrical
cabinet to deactivate the axis
brake.
2.- Since the brake is not
cancelled instantaneously, it
is possible to set a delay "T1"
by means of machine
parameters P807, P811, P816,
P820, before activating the
"Fast" output.
3.- Once "T1" has elapsed, the
CNC activates the "Fast"
output for the axis to start
moving.
4.- This "Fast" output is
maintained active until the
axis reaches the braking
distance set by P900, P901,
P902, P903 from the target
point. At this point on, the
CNC activates the "Slow"
output.
5.- When the axis enters the
stopping zone (at a P904,
P905, P906, P907 distance
from the target point), the
CNC deactivates the "Slow"
output.
6.- In order to allow the axis
enough time to position
before activating its brake, it
is possible to set a delay "T2"
by means of machine
parameters P808, P812, P817, P821
This parameter indicates the delay applied from the moment the "Slow" output is
deactivated until the "Brake" output is set low.
6.- After setting the "Brake" output low, the CNC waits a "T3" time period, set by P809,
P813, P818, P822, before activating the "In-Position" signal for the axis.
This "In-Position" output is kept high during "T4" which as established by machine
parameters P810, P814, P819, P823
BASIC OPERATION