Mitsubishi Electric QD77MS User Manual page 163

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 150320000000000.
0.001  Electronic gear
• Product information is 150320000000000 or later.
0.001  Electronic gear
: 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 current feed value is updated at follow-up processing. (The
movement amount for droop pulse is reflected as the current feed value when
the droop pulse becomes more than above calculated value in pulse unit of
motor end.)
Number of pulses per rotation (AP)
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 [
the value is within the range as follows.
AP
Electronic gear
=
AL
• When an error occurs
In the case of AP = 4194304 [PLS], AL = 10 [
out of the range as follows.
AP
Electronic gear
=
AL
Chapter 5 Data Used for Positioning Control
AP
 
 20000
 
AL  AM
AP
 
 320000
 
AL  AM
(Movement amount per rotation (AL)  Unit
4194304
AM = 1 = 2.097152
2000000
4194304
AM = 1 = 419430.4
10
5 - 25
-5
 10 degree], and AM = 1,
-1
 10 μm], and AM = 1, the value is