Comparison Of Networks; Comparison Of Servo System Network Specifications - Mitsubishi Electric MELSERVO-J2S Series Transition Handbook

Part 3: Review on Replacement of MR-J2S-_B_ with MR-J4-_B_
function
Setup software
Linear servo system
Direct drive servo system
Fully closed loop system
STO function
Note 1. Setup software (SETUP161E) is necessary for this function.
2. MR Configurator2 is necessary for this function.

3.3 Comparison of Networks

MR-J4-_B_ servo amplifier is connected to controllers, including a servo system controller, on the high-speed
synchronous network SSCNET III/H. The servo amplifier directly receives a command from a controller to
drive a servo motor.
SSCNET III/H allows higher-speed communication of 150 Mbps for both upstream and downstream traffic to
be achieved with high noise resistance enabled by adoption of the SSCNET III optical cables. Large amounts
of data are exchanged in real-time between the controller and the servo amplifier. Servo monitor information
is stored in the upper information system and is used for control.

3.3.1 Comparison of servo system network specifications

Item
Communication media
Communication speed
Transmission distance
Note 1. When SSCNET III/H communication is used to receive a command sent for the first time from the controller in the factory
setting, the operation mode is fixed to"J4 mode". To return to the factory setting or to select an arbitrary mode, change
the setting with the application "MR-J4(W)-B Change mode" or "MR Mode Change".
The application "MR-J4(W)-B Change mode" or "MR Mode Change" are available with MR Configurator2 Version 1.12N
and later. When a version older than 1.12N is used, download an update version from the MITSUBISHI ELECTRIC FA
Global Website.
MR-J2S-_B_
Setup software (SETUP161E)
×
×
×
×
MR-J2S series
SSCNET
Metal cable
5.6Mbps
Overall length: 30 m
→
Maximum distance between stations: 50 m
MR-J4-_B_
MR Configurator2
○
○
○
○
MR-J4 series (Note 1)
SSCNET III
Optical fiber cable
50Mbps
[Standard cord inside cabinet/standard cable outside cabinet]
Maximum distance between stations: 20 m
Maximum overall distance: 320 m
(20 m x 16 axes)
[Long distance cable]
Maximum overall distance: 800 m
(50 m × 16 axes)
3 - 8
Reference material/items
MR-J4-_B_ Servo Amplifier
Instruction Manual, Section 11.7
MR-J4-_B_ Servo Amplifier
Instruction Manual, Chapter 14
MR-J4-_B_ Servo Amplifier
Instruction Manual, Chapter 15
MR-J4-_B_ Servo Amplifier
Instruction Manual, Chapter 16
MR-J4-_B_ Servo Amplifier
Instruction Manual, Chapter 13
SSCNET III/H
150Mbps
[Long distance cable]
Maximum distance between stations: 100 m
Maximum overall distance: 1600 m
(100 m × 16 axes)