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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
-
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