Mitsubishi Electric A1SD75P1-S3 User Manual page 328

9 MAIN POSITIONING CONTROL
Setting item
Operation pattern
Da.1
Control method
Da.2
Acceleration time
Da.3
No.
Deceleration time
Da.4
No.
Positioning address/
Da.5
movement amount
Arc address
Da.6
Command speed
Da.7
Dwell time
Da.8
M code
Da.9
* Refer to section "5.3 List of positioning data" for information on the setting details.
POINT
The speed limit does not function for the speed calculated by the AD75 during interpolation control.
Because of this, observe the following precautions when setting the speed.
•
When the "composite speed" is set, set a value so the speed for each axis does not exceed the
" Pr.7 Speed limit value".
•
When the "reference axis speed" is set, set so the major axis side becomes the reference axis. If
the minor axis side is set as the reference axis, the major axis side speed may exceed the " Pr.7
Speed limit value".
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Restrictions
(1) An error "Continuous path control not possible" (error code: 516) will occur and
the operation cannot start if "continuous path control" is set in " Da.1
Operation pattern". ("Continuous path control" cannot be set in fixed-
dimension feed control.)
(2) If the movement amount for each axis exceeds "1073741824 (=2
"outside linear movement amount range" (error code: 504) will occur at the
positioning start, and a start will not be possible. (The maximum movement
amount that can be set in " Da.5 Positioning address/movement amount" is
30
"1073741824 (=2 .)".
(3) "Fixed-dimension feed" cannot be set in " Da.2 Control method" in the
positioning data when "continuous path control" has been set in " Da.1
Operation pattern" of the immediately prior positioning data. (For example, if
the operation pattern of positioning data No. 1 is "continuous path control",
fixed-dimension feed control cannot be set in positioning data No. 2.) An error
"Continuous path control not possible" (error code: 516) will occur and the
machine will carry out a deceleration stop if this type of setting is carried out.
Positioning data setting example
The following table shows setting examples when "2-axis fixed-dimension feed
control (fixed-dimension feed 2)" is set in positioning data No. 1 of axis 1. (The
required values are also set in positioning data No. 1 of axis 2.)
Axis 1 Axis 2
Axis
(reference (interpolation
axis) setting axis) setting
example example
Positioning
–
complete
Fixed-
dimension –
feed 2
1 –
0 –
80000.0 60000.0
µ m µ m
– –
6000.00
–
mm/min
500ms –
10 –
Setting details
Set "Positioning complete" assuming the next positioning
data will not be executed.
Set 2-axis fixed-dimension feed control.
Designate the value set in " Pr.26 Acceleration time 1" as
the acceleration time at start.
Designate the value set in " Pr.9 Deceleration time 0" as
the deceleration time at deceleration.
Set the positioning address. (Assuming "mm" is set in
" Pr.1 Unit setting".)
Setting not required (setting value will be ignored).
Set the speed during movement. (Designate the composite
speed of reference axis speed in " Pr.21 Interpolation
speed designation method".)
Set the time the machine dwells after the positioning stop
(pulse output stop) to the output of the positioning complete
signal.
Set this when other auxiliary operation commands are
issued in combination with the No. 1 positioning data.
9 - 32
MELSEC-A
30
)", an error