Phased Migration - Mitsubishi Electric MELSEC iQ-R Series Migration Manual

1. OVERVIEW OF MIGRATION FROM Q17nCPUN(-T) TO RnMTCPU

1.4.2 Phased migration

The following shows the procedure for the phased migration in which the MR-J2S-B servo
amplifiers are gradually replaced with the MR-J4-B servo amplifiers, and eventually the controller
is replaced with RnMTCPU in the final phase.
[Current system]
MR-J2S-B
(Note): Production
discontinued in
August 2015.
HC/HA
servo motor
[Replacement - Phase 2]
Servo amplifier and servo motor replacement for all axes
MR-J4-B-RJ020
+
MR-J4-T20
HG
servo motor
(Note): MR-J4-B-RJ020 + MR-J4-T20
MR-J4-B-RJ020 connected to MR-J4-T20 operates
as MR-J2S-B. In addition, MR-J4-B-RJ020 can
drive both MR-J4 compatible HG servo motors and
MR-J2S compatible HC/HA servo motors.
↓
[Replacement - Phase 1]
Servo amplifier and servo motor replacement for only one axis
MR-J4-B-RJ020
+
MR-J4-T20
(Conversion unit for
SSCNET of MR-J2S-B)
HG
servo motor
(Note): For replacing the servo amplifier or the servo
motor, refer to section 1.4.3 "Separate repair".
[Replacement - Phase 3]
Motion controller and servo network replacement
RnMTCPU
(RnCPU + R3 B)
MR-J4-B-RJ020
HG
servo motor
(Note): When replacing the servo system network, change
the operation mode of MR-J4-B-RJ020 from the
J2S mode to the J4 mode.
(Note): Remove MR-J4-T20.
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