Mitsubishi Melsec-A Series User Manual page 25

3. SPECIFICATIONS
/MELSEC
IMPORTANT
I
The AD71 automatically multiplies any numerical data
received from the sequence program by
t h e
relevant factor.
For example, if
t h e
AD71 receives the constant K = 200 from
the sequence program and
the
units have been defined as
PLS/sec, the s p e d output to the drive is 2000 PLS/sec (Le.
200 x 10' PLS/wc.)
I
IMPORTANT
I
The
AD71 controls all s p e e d s 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 p u l s e s
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
t h e
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
s e t
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 a t 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