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Chapter 13 Control Sub Functions
(5) Number of pulses/ movement amount at linear servo use
Linear servo motor
PLS
PLS
Servo
amplifier
Command
value
PLS
Control
unit
Simple Motion module
AP
AL AM
Feedback pulse
Linear encoder
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 [μm] per PLS
1 [PLS]
=
Number of pulses (AP) [PLS]
=
20
0.05 [μm] Movement amount (AL × AM) [μm] 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.
: When MR-J4(W)-GF use, 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 [μm]
and "Linear encoder resolution - Denominator (PL03)" is set to 20 [μm],
the values of AP, AL and AM are shown below.
AP = 20 ……………. [Pr.2]
AL = 1.0 ………..….. [Pr.3]
AM = 1 …………...… [Pr.4]
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