Mitsubishi Electric FR-A700 Series, Technical Manual

Page: 390 / 550

424
PARAMETER
(3) Selecting stop position command [ Pr.350 ]
Select either the internal stop position command
([ Pr.356 ]) or the external stop position command (16-
bit data using the FR-A7AX).
1) Internal stop position command [
Pr. 350 = 0
]
The value set in [ Pr.356 ] is the stop position.
When the number of encoder pulses is 1024p/r,
one revolution of the encoder 360 is divided into
4096 positions, i.e. 360 /4096 pulses = 0.0879 /
pulses per address as shown below. The stop
positions (addresses) are indicated in
parentheses.
2) External stop position command [
Pr.350 = 1
]
Mount the option FR-A7AX and set a stop position
using 16-bit data (binary input).
The value set in [ Pr.360 16 bit data selection ] should
be the number of stop positions minus 1.
FR-A7AX parameters ([
Pr.300 to Pr.305 ]) are
invalid. (Parameters are valid when [ Pr. 360 = 0 ].)
Terminal DY (data read timing input signal) is
invalid during vector control. (The position data is
downloaded at the start of orientation.)
[Pr.350]
Setting
Stop Position Command Source
0
Internal stop position command ([
Pr.356
] : 0 to
16383)
1
External stop position command (FR-A7AX) 16-
bit data
Origin (0)
CW
CCW
270
(3072)
90
(1024)
180 (2048)
[ Pr.359 = 0]
90
(1024)
270
(3072)
180 (2048)
[ Pr.359 = 1]
Origin (0)
[Pr.360]
Setting
Description
0
External position command is invalid.
(Speed command or torque command with
the FR-A7AX.)
1
Position command direct input
The 16-bit digital signal from the FR-A7AX
directly serves as stop position command.
<Example>
When the [
Pr.369 Number of encoder pulses ]
setting is 1024, stop position command from 0
to 4095 can be directly input using the FR-
A7AX and input digital signal of 2048 (H800) to
stop the motor at 180 position. The command
more than 4096 is considered as 4095.
2 to 127
Set the stop position command dividing up
to 128 stop positions at regular intervals.
If the external stop command entered is
greater than the setting, the stop positions
are the same as those in the maximum
external stop command value.
<Example>
When the number of stop positions is 90
(divided at intervals of 4 ), 90 - 1 = 89.
Hence, set 89.
Origin (0)
270
(3072(HC00))
180
(2048(H800))
90
(1024(H400))
CW
[ Example 1 ]
[ Pr. 369 = 1024 ] , [ Pr. 360 = 1 ]
[ Example 2 ]
120 stop position ( [ Pr. 369 = 119 ] )
CW
At intervals
of 3
270
(90(H5A))
180
(60(H3C))
90
(30(H1E))
Origin (0)
* Values in parentheses indicate binary data entered
from the terminals. Even if the position pulse monitor
([
Pr. 52 DU/PU main display data selection = 19 ]) is
selected, the data monitored is not the number of
stop positions but is 0 to 65535 pulses.
[Pr.350] Stop
Position
Command
Selection
[Pr.360]
16 Bit Data Selection
Operation
Stop position command
16 bit data
(FR-A7AX)
Speed command
0 : Internal
0 : Speed command Internal ([ Pr.356 ]) Speed command 16 bit data
1, 2 to 127 : Position command Internal ([ Pr.356 ]) Invalid External command (or PU)
1 : External
0 : Speed command Internal ([ Pr.356 ]) Speed command 16 bit data
1, 2 to 127: Position command
External
(Internal when the FR-A7AX is
not mounted ([ Pr.356 ])
Position
command
External command
(or PU)