Phased Migration - Mitsubishi Electric Q172DCPU Migration Manual

1. OVERVIEW OF MIGRATION FROM Q17nDCPU(-S1) TO Q17nDSCPU

1.4.2 Phased migration

The following shows the procedure for the phased migration in which the controller is replaced
with Q17nDSCPU in the first phase, and then the MR-J3-B servo amplifiers are gradually
replaced with MR-J4-B in the following phases.
[Current model]
MR-J3-B
(Note): Production
discontinued
in May 2019.
HC/HA/HF
servo motor
[Replacement - Phase 2]
Servo amplifier and servo motor replacement for
only one axis
MR-J4-B
(J3 compatibility mode)
HG
servo motor
(Note): For replacing the servo amplifier or the servo
motor, refer to section "1.4.3 Separate repair".
(Note): For details of the J3 compatibility mode, refer to
the "Transition from MELSERVO-J3/J3W
Series to J4 Series Handbook".
[Replacement - Phase 1]
Replacement of the controller
Q17nDSCPU
(QnUD(E)(H)(V)CPU
+ Q3 DB)
MR-J3-B
(Note): Production
discontinued
in May 2019.
HC/HA/HF
servo motor
[Replacement - Phase 3]
Servo amplifier and servo motor replacement for all
axes, and servo system network replacement
MR-J4-B
HG
servo motor
(Note): When replacing all the servo amplifiers with
MR-J4-B, the operation mode can be switched
from "J3 compatibility mode" to "J4 mode".
The servo system network is also changed from
SSCNETIII to SSCNETIII/H.
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