PARAMETER
421
2
P
ARAM
ETE
R
2.20.7 Orientation control
[
Pr. 350 to 366, 369, 393, 396 to 399
]
(A700)
This function is used with a position detector (encoder)
installed to the spindle of a machine tool, etc. to allow a
rotation shaft to be stopped at the specified position
(oriented). It requires a plug-in option FR-A7AP or FR-
A7AL and valid under V/F control, Advanced magnetic flux
vector control, and vector control. Orientation control is
invalid when a Real sensorless vector control is selected,.
If the orientation command signal (X22) is turned on during
operation after the various parameters have been set, the
speed will decelerate to the "orientation switchover speed".
After the "orientation stop distance" is calculated, the
speed will further decelerate, and the "orientation state"
(servo lock) will be entered. The "orientation complete
signal" (ORA) will be output when the "orientation complete
width" is entered.
[
Pr. 350 Stop position command selection = 9999
] at initial
setting, orientation control function is invalid.
When orientation control is performed, PID control is
invalid.
A700
[Pr.]
Name
Initial
Value
Setting
Range
Description
V/F Control
Advanced
Magnetic Flux
Vector Control
Vector
Control
350
Stop position command
selection
9999
0
Internal stop position command ([
Pr.356
])
{
{
1
External stop position command (FR-A7AX 16-bit data)
9999
Orientation control invalid
351
Orientation speed
2Hz
0 to 30Hz
Decrease the motor speed to the set value when the orientation
command (X22) is given.
{
{
352 Creep speed
0.5Hz 0 to 10Hz After the speed reaches the orientation speed, the speed
decreases to the creep speed set in [
Pr.352
] as soon as the
current position pulse reaches the creep switchover position set
in [
Pr.353
].
{
×
353
Creep switchover
position
511 0 to 16383
*
{
×
354
Position loop
switchover position
96
0 to 8191
As soon as the current position pulse reaches the set position
loop switchover position, control is changed to position loop.
{
×
355
DC injection brake start
position
5
0 to 255
After changed to position loop, DC injection brake is applied
and the motor stops as soon as the current position pulse
reaches the set DC injection brake start position.
{
×
356
Internal stop position
command
0
0 to 16383
*
When [
Pr.350 = 0
], the internal position command is activated
and the setting value of [
Pr.356
] becomes a stop position.
{
{
357
Orientation in-position
zone
5
0 to 255
Set the in-position zone at a stop of the orientation.
{
{
358
Servo torque selection
1
0 to 13
Functions at orientation completion can be selected.
{
×
359
Encoder rotation
direction
1
0
{
{
1
360
16 bit data selection
0
0
Speed command
{
{
1
16 bit data is used as
external position
command as is.
When 1 is set in [
Pr.350 =
1] and the FR-
A7AX is mounted, set a stop position
using 16-bit data.
Stop position command is input as
binary regardless of the [
Pr.304
] setting.
2 to 127
Set the stop position
dividing up to 128
stop positions at
regular intervals.
361 Position shift
0
0 to 16383
*
Shift the origin using a compensation value without changing
the origin of the encoder. The stop position is a position
obtained by adding the setting value of [
Pr.361
] to the position
command.
{
{
A
Encoder
CW
Clockwise direction as viewed
from A is forward rotation
CCW
A
Encoder
Counter clockwise direction as
viewed from A is forward rotation
Summary of Contents for FR-A700 Series
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Page 440: ...474 PARAMETER MEMO ...
Page 522: ...556 SELECTION MEMO ...
