YASKAWA yasnac i80m

3.5
MACHINE
CONTROL STATION
(Cont’d)
(1)
For
rapid
feedrate
command
(GOO)
and
manual
operation
For
movement
in
a
direction
in
which
the
external
deceleration
limit
switch
operates,
deceleration
is
started
from
that
operating
point
and
.
the
machine
is
moved
at
a
low
speed
set
with
parameter
(Pm2444).
GOO
:
\
'
SPEED
SET'BY
\
PARAMETER
*
S3JCI
\
’
I
SPEED
V
I
SARAM
—
F
COMMAND'
I
SET
BY
ETER
1
6341
N
i
0
EXTERNAL
DECEL LS.
1X1
RESET
OPERATION
Fig.
3.5.6
(2)
For
cutting
feed
command
(G94)
While
the
external
deceleration
limit
switch
is
operating,
the
speed
is
reduced
to
a
low
speed
set
by
parameter
(Pm2445).
If
the
speed
instruct¬
ed
by
F-command
is lower'
than
that
set
by
this
parameter,
the
machine
is moved
as
instructed
by
F-command.
NC
CONTROL
*
EDO
X
D
+
X
-
EDO
X
’Q
sy?
—
+
EDC
Y
D
-
EDC.Y
O
—
r
-
Y
TRAVERSE
RATE
f
EDC
Z
D
z
EXTERNAL
•
DECEL
LIMIT
SWITCH
-
EDC
Z
D
-
z
+
EDC
a
D
+
a
1
-
EDC
a
-
a
+
EDC
fi
Q
4,1.
'
—
EDC
fi
-.1
Q
Fig.
3.5.7
1.
This
deceleration
function
is
invalid
for
specification
of
*
feed
per
minute
(mm/
rev).
2.
External
deceleration
is
invalid
for
feed
by
HANDLE
(manual
pulse
generator).
-
580
-