Summary - Mitsubishi Electric MR-J4W2-0303B6 Instruction Manual

1. FUNCTIONS AND CONFIGURATION
1. FUNCTIONS AND CONFIGURATION

1.1 Summary

The MELSERVO-J4 series of multi-axis servo amplifiers inherits the high performance, sophisticated
functions, and usability of the MR-J4-B servo amplifiers, and ensures space saving, reduced wiring, and
energy saving.
The MR-J4W_-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.
One MR-J4W_-B servo amplifier can drive two or three servo motors. The footprint of one MR-J4W_-B servo
amplifier is considerably smaller than that of two or three MR-J4-B servo amplifiers. You can install MR-
J4W_-B servo amplifiers without clearance between them. This makes your system more compact.
The multi-axis structure enables multiple axes to share the SSCNET III cable, control circuit power supply
cable, and main circuit power supply cable. This ensures reduced wiring.
For the MR-J4W_-B servo amplifier, the parameter settings allows you to use a rotary servo motor, linear
servo motor, and direct drive motor for each axis. The axes can be connected to a rotary servo motor, linear
servo motor, and direct drive motor, which have different capacity. Using a linear servo motor or direct drive
motor simplifies the system, and using the MR-J4W_-B servo amplifier downsizes the equipment, enhances
the equipment performance, and ensures space saving.
Using regenerative energy generated when a servo motor decelerates ensures energy saving.
Depending on the operating conditions, the regenerative option is not required.
As the MR-J4-B servo amplifier, the MR-J4W_-B servo amplifier supports the one-touch tuning and the real-
time auto tuning. This enables you to easily adjust the servo gain according to the machine.
The tough drive function and the drive recorder function, which are well-received in the MELSERVO-JN
series, have been improved. The MR-J4W_-B servo amplifier supports the improved functions. Additionally,
the preventive maintenance support function detects an error in the machine parts. This function provides
strong support for the machine maintenance and inspection.
On the SSCNET III/H network, the stations are connected with a maximum distance of 100 m between them.
This allows you to create a large system.
The MR-J4W_-B servo amplifier supports the STO (Safe Torque Off) function. When the servo amplifier is
connected to a SSCNET III/H-compatible servo system controller, in addition to the STO function, the servo
amplifier also supports the SS1 (Safe Stop 1), SS2 (Safe Stop 2), SOS (Safe Operating Stop), SLS (Safely-
Limited Speed), SBC (Safe Brake Control) and SSM (Safe Speed Monitor) functions.
The servo amplifier has a USB communication interface. Therefore, you can connect the servo amplifier to
the personal computer with MR Configurator2 installed to perform the parameter setting, test operation, gain
adjustment, and others.
POINT
In MELSERVO-J4 series, ultra-small capacity servo amplifiers compatible with
48 V DC and 24 V DC power supplies are available as MR-J4W2-0303B6. Refer
to chapter 18 for details of MR-J4W2-0303B6 servo amplifiers.
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