Mitsubishi Electric MELSERVO-J2-Super Series, Transition Handbook

Page: 46 / 662

Part 2: Review on Replacement of MR-J2S-_A_ with MR-J4-_A_
2 - 15
(2) Position control mode
Parameter
number
Name Initial
value
Setting
value
Description
PA01 Operation mode 1 0 0 0h _ _ _ 0h Select the servo amplifier control mode.
Select the position control mode.
PA06 Electronic gear numerator
(Commanded pulse
multiplication numerator) 1 256
(Note)
When using an electronic gear, it is necessary to change the
setting value.
For simultaneous replacement, set a value by calculating as
follows:
CMX
CDV
=
Encoder resolution
Servo motor for MR-J2S
Replacement servo motor
Encoder resolution
・
=
Former CMX
Former CDV 4194304
131072
・
1
8
=
256
1
When a geared servo motor is replaced, the actual reduction
ratio may differ before and after the replacement. If the ratio
differs after the replacement, set the values considering the
actual reduction ratio.
PA07 Electronic gear denominator
(Commanded pulse
multiplication denominator) 1 1
(Note)
PA13 Command pulse input form 0 1 0 0h _ x _ _h Command input pulse train filter selection
Selecting the proper filter enables noise immunity enhancement.
Make sure to select a filter so as not to cause a position
mismatch. For details, refer to "MR-J4-_A_ [Pr. PA13]" in
Section 3.6.3.
In addition, it is necessary to adjust the command pulse logic to
the positioning module. An incorrect logic setting causes the
servo motor to not rotate. Make sure to configure the settings.
Refer to "3.7 Important Points for Replacement (Command
Pulse Logic Settings)".
Note. The example value shown is for when the electronic gear ratio of an existing servo amplifier is set as "8/1".
(3) Speed control mode
Parameter
number
Name Initial
value
Setting
value
Description
PA01 Operation mode 1 0 0 0h _ _ _ 2h Select the servo amplifier control mode.
Select the speed control mode.
PC12 Analog speed command -
Maximum speed 0 3000 Analog speed command - Maximum speed
The setting value at left is for when the HC-SFS53 motor is
replaced with the HG-SR52 motor.
(4) Torque control mode
Parameter
number
Name Initial
value
Setting
value
Description
PA01 Operation mode 1 0 0 0h _ _ _ 4h Select the servo amplifier control mode.
Select the torque control mode.
PC12 Analog speed limit -
Maximum speed 0 3000 Analog speed limit - Maximum speed
The setting value at left is for when the HC-SFS53 motor is
replaced with the HG-SR52 motor.
PC13 Analog torque command -
Maximum output 100.0 100.0 Analog torque command - Maximum output
Set the same value as for the MR-J2S-_A_ servo amplifier.