YASKAWA YASNAC 3000G - Page 172

Spindle
D/A
saturation
speed
for
each
gear
ratio.
gear
ratio
is
determined
with
the
contents
of
the
corresponding
parameter
No.
(71X,
-
72X...)
which
are
written
in
rpm.
Maximum
spindle
speed
for
each
gear
ratio.
Maximum
spindle speed
for
each
gear
ratio
is
determined
with
the
contents
of
parame¬
ter
No.
(71Y,
72Y...)
which
are
written
in
rpm.
SS1
to
S
S3
:
The
grade
of
D/A
output
for
each
SM1
to
SM3:
12
Bits
binary
output:
Sn
Sn
is
obtained
as
follows.
I
ROl
<
4095
R02
Sn
=
x
S
SSn
R03
1
12
BITS
f
BINARY
OUTPUT
Spindle
speed
(rpm)
programmed
by
S
Spindle
D/A
saturation
speed
(rpm)
for
each
gear
ratio
S:
Rll
SSn
:
R12
OR
S
-OUTPUT
REVERSING
D
SINV
Some
controls
may
have
output
with
1
bit
for
sign
and
11
bits.
Sn
is obtain
ed
as
follows.
Note
:
In
this
case,
SPDA
ANALOG
D/A
OUTPUT
SG
r
2047
+
cl
Sn
Sn
=
x
S
I
SPINDLE
GEAR
f
RATIO
-GR02
-GR04
However,
when
SINV
input
is
on,
negative
binary
output
is
sent.
.SFb
READING-STROBE-
SIGNAL
Spindle
D/A
output:
Vn
D
10
Vn
=
+•
x
S
D
SSn
l
SPINDLE
GEAR
RATIO
INPUT
D
-CR2
O
-CR3
Spindle
speed
(rpm)
programmed
by
S
S:
Q
-GR4
:
Spindle
D/A
max.
speed
on
Is
SFIN
S
COMMAND
COMPLETION
MST
COMPLETION
D
for
each
gear
ratio
D
FIN
However,
when
SINV
input
is
on,
negative
voltage
is
output.
Fig.
1.7
165
-