Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 327

Part 6: Review on Replacement of MR-J3-_T_(DIO command/ Serial communication operation) with MR-J4-_A_-RJ
No. Name and function
PA06 Electronic gear numerator (command pulse multiplication
numerator)
PA07
Electronic gear denominator (command pulse
multiplication denominator)
CAUTION
False setting will result in unexpected
fast rotation, causing injury.
This parameter is made valid when power is switched off,
then on after setting, or when the controller reset has
been performed.
The range of the electronic gear setting is
1 CMX
< < 2000 . If you set any value outside this
10
CDV
range, [AL. 37 parameter error] occurs.
Setting "0" in [Pr. PA06] automatically sets the encoder
resolution pulse.
(1) Concept of electronic gear
Use the electronic gear ([Pr. PA06]/[Pr. PA07]) to
make adjustment so that the servo amplifier setting
matches the moving distance of the machine. Also, by
changing the electronic gear value, the machine can
be moved at any multiplication ratio to the moving
distance on the servo amplifier.
[Pr. PA06]
CMX
=
CDV [Pr. PA07]
+
CMX
-
CDV
Encoder feedback pulses
Electronic gear
[Pr. PA06]/[Pr. PA07]
MR-J3-_T_
Servo motor
Deviation
M
counter
Encoder
Initial
No.
value
1 PA06 Electronic gear numerator (command pulse multiplication
numerator)
1
et an electronic gear numerator.
To enable the parameter values in the positioning mode,
cycle the power after setting.
To enable the parameter, select "Electronic gear (0 _ _
_)", "J3 electronic gear setting value compatibility mode
(2 _ _ _)", or "J2S electronic gear setting value
compatibility mode (3 _ _ _)" of "Electronic gear
selection" in [Pr. PA21].
Set the electronic gear within the following range. Setting
out of the range will trigger [AL. 37 Parameter error].
Pr. PA21
0 _ _ _
2 _ _ _
3 _ _ _
Setting range: 1 to 16777215
PA07 Electronic gear denominator (command pulse
multiplication denominator)
Set an electronic gear denominator.
To enable the parameter values in the positioning mode,
cycle the power after setting.
To enable the parameter, select "Electronic gear (0 _ _
_)", "J3 electronic gear setting value compatibility mode
(2 _ _ _)", or "J2S electronic gear setting value
compatibility mode (3 _ _ _)" of "Electronic gear
selection" in [Pr. PA21].
Set the electronic gear within the range of [Pr. PA06].
Setting out of the range will trigger [AL. 37 Parameter
error].
Setting range: 1 to 16777215
6 - 48
MR-J4-_A_-RJ
Name and function
Electronic gear setting range
1/865 < CMX/CDV < 271471
1/13825 < CMX/CDV < 16967
1/27649 < CMX/CDV < 8484
Initial
value
1
1