3.
SPECIFICATIONS
/MELSEC-A
IMPORTANT
I
The AD71 automatically multiplies any numerical data
received from
the
sequence program
by
the
relevant factor.
For
example,
if
the
AD71 receives the constant
K
=
200 from
the
sequence
program
and
the
units have been defined
as
PLS/sec,
the
sped
output
to
the drive
is
2000 PLS/sec
(Le.
200
x
10'
PLS/wc.)
I
IMPORTANT
I
The
AD71 controls
all
speeds
to
a
maximum accuracy of 6.1
pulses
per
second.
For
this
rearon,
if
a
speed
is
set
to
200
pulses per second, the
actual
speed
will
be
195.2
pulses
per second. This may
be
found
as
follows
200
-
=
32.78688
.....
6.1
The AD71 can only deal with whole number multiples of 6.1,
so
the
actual speed will
be
32 x 6.1
=
195.2 pulses
per
second.
Parameter data
is
explained
as
follows.
(1)
Unit
Selects
the units (mm, inch, degree, or pulse) for positioning control.
Can be
set
independently for
X
and
Y
axes
(e.9.
X
axis
=
mm,
Y
axis
=
degree).
(2)
Travel per pulse
0
Specifies the travel distance per pulse
as
determined
by
the
0
Controls the number of pulses contained in the pulse train from
mechanics of the system.
the
AD71.
(3)
Speed limit value
0
Specifies the maximum speed for positioning (or zeroing).
0
When the positioning speed called
at
a
given time is greater than
the speed limit value, the speed
is
limited to the value set by the
parameter.
0
When
a
new speed
is
called during positioning by the sequence
program and this
is
greater than the speed limit value, the speed
is
limited to the value
set
by the parameter.
3-1
0
IS
INAI 66101-A
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