Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 83

Part 3: Review on Replacement of MR-J2S-_B_ with MR-J4-_B_
(3) Gradual replacement of MR-J2S-_B_ with MR-J4-_B_
Refer to "[Appendix 1] Summary of MR-J4-_B_-RJ020 + MR-J4-T20".
1: Current system
–
MR-J2S-B
HC-_FS/
HA-_FS
motor
MR-J4-_B_-RJ020
+ SSCNET conversion unit
MR-J4-T20
Note 1. MR-J4-_B_-RJ020 equipped with the SSCNET conversion unit operates as MR-J2S-_B_.
2. It is necessary to change MR-J4-_B_-RJ020 from J2S mode to J4 mode. Remove MR-J4-T20.
Refer to "[Appendix 1] Summary of MR-J4-_B_-RJ020 + MR-J4-T20".
(4) For separate repair
Refer to "[Appendix 1] Summary of MR-J4-_B_-RJ020 + MR-J4-T20".
Servo amplifier (MR-J2S-_B_) replacement
MR-J4-_B_-RJ020
+ SSCNET conversion unit
MR-J4-T20
HC-_FS/HA-_FS motor
MR-J4-_B_-RJ020 can drive a J2S-compatible HC/HA motor.
Existing wiring can be used by using the renewal tool. (For
details, refer to "[Appendix 2] Introduction to Renewal Tool".)
Note. Separate repair means replacement.
2: Only one axis replaced
(Note1)
HG motor
POINT
MR-J2S-_B_ cannot drive an HG motor. When the servo motor is replaced with
an HG motor, simultaneous replacement with MR-J4-_B_ and an HG motor is
necessary.
When a servo amplifier other than MR-J2S-B series and MR-J2M-B series is
used with a controller, the MR-J4-B-RJ020 SSCNET conversion unit cannot be
used.
HC-_FS/HA-_FS motor
3: Replacement of a servo amplifier
and a motor for all axes (Note 1)
Replacement of servo motor (HC)
MR-J4-_B_-RJ020
+ SSCNET conversion unit
MR-J4-T20
HC-_FS/HA-_FS motor
MR-J2S-_B_ cannot drive an HG motor.
Replace with MR-J4-_B_ and an HG motor simultaneously.
Existing wiring can be used by using the renewal tool. For
details, refer to "[Appendix 2] Introduction to Renewal Tool".
3 - 6
4: Replacement of a controller
(Note 2)
QnUD + QDS motion controller + Q3_DB
MR-J4-_B_-
RJ020
HG motor
MR-J4-T20
removed