Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 481

[Appendix 1] Summary of MR-J4_B_-RJ020 + MR-J4-T20
(10) In this [Appendix 1], it only describes the encoder cable and the regenerative option for connecting the
HC-_FS series and the HA-_FS series servo motors to the MR-J4-_B_-RJ020 servo amplifier. For details
of the options for the servo amplifier, refer to Chapter 11 of the "MR-J4-_B_-RJ020 MR-J4-T20 Servo
Amplifier Instruction Manual". For options for the HC-_FS series and the HA-_FS series servo motors,
refer to "MR-J2S-_B Servo Amplifier Instruction Manual (SH(NA)030007)" and "MELSERVO Servo Motor
Instruction Manual (SH(NA)3181)".
POINT
When using servo motors of the HA_FS and the HC_FS series together,
"regeneration option" and "external dynamic brake unit" can be used with the
products used in MR-J2S-_B_.
To change to the HG series servo motor, change "regeneration option" and
"external dynamic brake unit" after referring to the instruction manual for MR-J4-
_B_.
For 1-phase 200 V AC to 240 V AC, connect the power supply to L1 and L3. The
connection destination is different from that of the MR-J2S series servo
amplifier. When replacing the MR-J2S with the MR-J4, make sure that the
connection destination is correct.
When using (HA-LFS series) servo motors that have thermal terminals and not
connecting thermal signals to the MR-J4 servo amplifier, set [Pr. 58] to "_ _ _ 1h
(Disabled)".
The overheat protection of a servo motor is not enabled. Configure a protective
circuit.
Appendix 1-18