YASKAWA YASNAC 3000G - Page 142

5.
ZERO
POSITION
lamp
(APX
or
APZ)
indicates
the
axis
which has
reached
the
reference
point.
zero
YASNAC
+EDCX
r
D
SPEED
-EDCX
-X
+EDCY
D
+Y
TRAVERSE
RATE
CLAMP
LIMIT
SWITCH
TRAVERSE
-Y
RATE
CLAMP
LIMIT
SWITCH
-EDCY
+EDCZ
D
DECELERAT
I
NC
REFERENCE
ZERO
POINT
-EDCZ
POINT
+EDOY
D
f>
O
--
KX
t
Fig.
6.2.
1
.
1
-EDCa
-a
NOTES:
•
The
axis
which has
been
returned
to
the
refer¬
ence
zero
cannot
be
advanced
manually
unless
the
ZERO
RETURN
switch is
turned
off.
Re¬
tracting
the
axis
from
the
reference
zero
is
possible
.
*
The
axis
in
the
deceleration
range
cannot
be
re¬
turned
to
the
reference
zero
by
the
reference
zero
operation
except
for
first
zero
return
operation
after
power
on.
Turning
on
the
MACHINE
LOCK
switch disables
the
reference
zero
return
of
the
axis.
Do
not
return
the
axis
to
reference
zero
man¬
ually
when
the
block
data
read
ahead is
in
the
buffer
register,
for
the
data
will
be
deleted.
Fig.
6.
1.31
(Cont'd)
NOTES:
•
Traverse
Rate
Clamp
function
is
uneffective
for
the
feed
command
in
mm/rev+
mode.
•
Machine
motion
by
HANDLE
(Manual
Pulse
Generator)
is
not
affected
by
the
TRAVERSE
RATE
CLAMP
limit
switch.
6.2
OPERATION
FOR
MACHINING
6.2.1
MANUAL
RETURN
TO
REFERENCE
ZERO
To
return
the
tool
to
the
reference
zero
point
manually,
proceed
as
follows.
JOG
ZERO
POSITION
X Y
Z
h
a
a
a
a
1.
Set
the
MODE
SELECT
switch
to
RAPID
or
JOG.
_±X.
±z
-A
A
2.
Move the
tool
out
of
deceleration
range
man¬
ually.
If
the
tool is
in
the
deceleration
range,
Reference
Zero
Return
is
not
executed
(alarm
code
"22"
is
displayed).
ZERO
RETURN
=2.
OFF
3.
Turn
on
ZERO
RETURN
switch.
Fig.
6.2.
1.2
Hold
in
the
JOG
button
of
the
axis
to
be
re¬
turned
to
the
reference
zero.
The
tool
is moved
in
the
same
manner
as
manual
feed
operation,
slowed
down
after
deceleration
starting
point,
and
automati¬
cally
stopped
at
the
reference
zero.
4.
6.2.2
BLOCK
RETURN
+
Block Return is
used
to
restart
the
operation,
if
a
trouble
is
encountered
in
a
block
during
auto¬
matic
operation,
from
the
beginning
of
the
block.
1.
Stop
the
machine
by
depressing
the
FEED
HOLD
pushbutton
at
the
time
when
the
trouble
is
encountered
in
machine
operation.
135
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