YASKAWA yasnac i80m

3.6.1
.2
Easy
return
to
reference
point
&
(1)
Outline
Since
the
place
where
the
actual
phase-C
pulse
appeared
cannot
be
measured
for
the
zero-point
LS
signal
position
at
the
conventional
machine
zero-point
setting,
the
optimum
position
was
measured
after
several trial
times
by
adjusting
the
zero-point
LS
signal.
On
the
other
hand,
by
rewriting
.the internal
data,
the
optimum
refer-
'
ence
point
position
can
be
set
quickly
and
easily.
This
function
employs
a
new
concept
of
imaginary
phase-C
pulse.
The
.
phase-C
pulse
position
output
by
one
pulse
per
motor
revolution
is
fixed
mechanically
and
adjustment
is
not
needed.
Therefore,
besides
this,
an
imaginary
phase-C
pulse
which
can occur
at
any
desired
position
during
the
motor
rotation
is
assumed.
This
pulse
is called
imaginary
puIse-C
and
indicated
as
the
shift
distance
from
the
phase-C
pulse.
I
HIGHSPEED
FEEDING
i
pm
280?
to
vnCmt
/
APPROACH
SPEED
I
pm
L'
S3
1
to
pmJ&r.i
CREEP
SPEED
(pmZHI
to
pm25J5i
’
TRAVELING
,
DISTANCE
Ipm445l
1u
pm«Kl
9
-
--
SPEED
SEQUENCE
DECELE
SIGNAL
-
REDUCTION
/
POINT
/
|
_
WIDTH
I
|
RATION
LS
-JllUllUJU
-
ajKSS"
SIGNAL
IMAGINARY
)'J
LASE-C
SHIFTING
1'ISTANCt
IpnCfl
lo
r<rUV-f.l
Fig.
3.6.4
-
597
-