Case Study On Migration; Whole System Migration (Recommended) - Mitsubishi Electric MELSEC iQ-R Series Migration Manual

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

1.4 Case Study on Migration

The following describes a standard case study of migrating the existing system using
Q17nCPUN(-T).

(1) Whole system migration (recommended)

The controller, servo amplifiers, servo motors, and servo network are replaced simultaneously.
Although a large-scale installation is required, the whole system migration allows the system
to operate for longer periods. (Refer to section 1.4.1.)
(2) Phased migration (When the whole system migration is difficult due to the installation
period and cost.)
The MR-J2S-B servo amplifiers are gradually replaced with the MR-J4-B servo amplifiers, and
then the controller is eventually replaced with RnMTCPU in the final phase.
(Refer to section 1.4.2.)
(3) Separate repair
This is a replacement method for when the servo amplifier or the servo motor malfunctions.
(Refer to section 1.4.3.)
Consideration of migration
Whole system
migration?
YES
1) Whole system migration
→ Refer to section 1.4.1.
1 - 8
NO
Servo amplifier
and servo motor
replacement?
YES
(2) Phased migration
→ Refer to section 1.4.2.
NO
(3) Separate repair
→ Refer to section 1.4.3.