Mitsubishi Electric MELSEC Q Series, User Manual

Page: 142 / 834

5 - 22
Chapter 5 Data Used for Positioning Control
POINT
(1) Set the electronic gear within the following range.
If the value outside the setting range is set, the error "Outside electronic gear
setting range" (error code: 907) will occur.
• Product information is before 150920000000000.
0.001

Electronic gear
 
AP
AL

AM

20000
• Product information is 150920000000000 or later.
0.001

Electronic gear
 
AP
AL

AM

320000
: For the movement amount per rotation (AL) which is used for the calculation
of the electronic gear above, convert into the unit shown in the "Value set
with sequence program" of the table in "[Pr.3] Movement amount per rotation
(AL)" and "[Pr.4] Unit magnification (AM)".
(2) The result of below calculation (round up after decimal point) is a minimum
pulse when the feed current value is updated at follow-up processing. (The
movement amount for droop pulse is reflected as the feed current value when
the droop pulse becomes more than above calculated value in pulse unit of
motor end.)
[Pr.2] Number of pulses per rotation (AP) ([Pr.3] Movement amount per rotation (AL)

[Pr.4] Unit magnification (AM))[PLS]
Refer to Section 13.8.2 for the follow-up processing.
(Example)
• When an error does not occur
In the case of AP = 4194304 [PLS], AL = 2000000 [
 10
-5
degree], and AM = 1,
the value is within the range as follows.
Electronic gear
=
AP
AL AM
=
4194304
2000000 1
= 2.097152
• When an error occurs
In the case of AP = 4194304 [PLS], AL = 10 [
 10 -1 µm], and AM = 1, the value is
out of the range as follows.
Electronic gear
=
AP
AL AM
=
4194304
10 1
= 419430.4