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Chapter 13 Control Sub Functions
This setting will produce an error for the true machine value, but it cannot
be helped. This error is as follows.
7422012/166723584
- 1
100 = -8.69
10
–6
[%]
2362500 /166723584
AP (Number of pulses per rotation) = 4194304 [PLS]
S
(Movement amount per rotation)
= 135000.0 [
m]
Reduction ratio
= 135000.0 [
m]
7/53
1/3
It is equivalent to an about 86.9 [
m] error in continuous 1km feed.
(5) Number of pulses/ movement amount at linear servo use
PLS
PLS
PLS
Simple Motion module
Feedback pulse
Command
value
Control
unit
Servo
amplifier
Linear servo motor
Linear encoder
AP
AL AM
Calculate the number of pulses (AP) and movement amount (AL
AM) for
the linear encoder in the following conditions.
Linear encoder resolution =
Number of pulses (AP)
Movement amount (AL
AM)
Linear encoder resolution: 0.05[
m] per PLS
1[PLS]
0.05[
m]
=
Number of pulses (AP) [PLS]
Movement amount (AL) [
m]
=
20
1.0
Set the number of pulses in "
Pr.2
Number of pulses per rotation (AP)
", the
movement amount in "
Pr.3
Movement amount per rotation (AL)
", and the unit
magnification in "
Pr.4
Unit magnification (AM)
" in the actual setting.
(Note): Set the same value in AP, AL, and AM as the value set in the servo
parameter "Linear encoder resolution - Numerator (PL02)" and
"Linear encoder resolution - Denominator (PL03)".
Refer to each servo amplifier instruction manual for details.
When "Linear encoder resolution - Numerator (PL02)" is set to 1 [
m] and
"Linear encoder resolution - Denominator (PL03)" is set to 20 [
m], the
values of AP, AL and AM are shown below.
AP = 20 ……….
Pr.2
AL = 1.0 ..….. …
Pr.3
AM = 1 ……….
Pr.4
Содержание MELSEC-L Series
Страница 1: ...MELSEC L LD77MS Simple Motion Module User s Manual Positioning Control LD77MS2 LD77MS4 LD77MS16 ...
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Страница 253: ...5 113 Chapter 5 Data Used for Positioning Control MEMO ...
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Страница 485: ...9 25 Chapter 9 Major Positioning Control MEMO ...
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Страница 656: ...11 32 Chapter 11 Manual Control MEMO ...
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Страница 798: ...13 108 Chapter 13 Control Sub Functions MEMO ...
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