Mitsubishi MR-J2-10B 100W SSCNET Servo Amplifier

Discontinued 100W SSCNET Servo Amplifier

Mitsubishi MR-J2-10B is a 100W AC servo amplifier from the discontinued MELSERVO-J2 series. The B-interface model receives motion commands through the original SSCNET network, with CN1A and CN1B used for bus connections and CN2 used for the compatible servo-motor encoder.

Verified Power and Control Characteristics

The MR-J2-10B uses sine-wave PWM and current control with a built-in dynamic brake. Its main circuit supports three-phase 200–230VAC. Single-phase 230VAC operation is limited to manufacturer-specified HC-MF and HA-FF motor combinations and should not be assumed for every installation.

Difference Between MR-J2-10B, MR-J2-10A and MR-J2S-10B

MR-J2-10B is the original SSCNET-interface model. MR-J2-10A uses a general-purpose command interface, while MR-J2S-10B belongs to the later MELSERVO-J2-Super generation. Similar capacity and appearance do not confirm identical command interfaces, parameters or system compatibility.

MR-J4-10B Migration Is Not a Direct Replacement

Mitsubishi lists MR-J4-10B as an example migration model when the amplifier and motor are upgraded as a set. However, MR-J2-B uses the original metal-cable SSCNET network, whereas MR-J4-B uses SSCNET III optical communication. Bus cables, encoder cables, power connectors and parameter settings must therefore be reviewed during migration.

Identification Checks Before Ordering

Confirm the complete MR-J2-10B nameplate, including any suffix, together with the input voltage, servo-motor model, motion controller, SSCNET cable, axis setting, CN1A/CN1B and CN2 connectors, terminal layout and parameter backup.

Send REACO CNC clear photos of the front panel, side nameplate, rear connections and installed servo system. Visible identifiers can be compared before condition, stock, price and lead time are confirmed.

Mitsubishi Servo Drive Supply and Repair Support

Browse related Mitsubishi servo drives and amplifiers. Related MR-J2, MR-J2S and MR-J4 models should be compared by complete ordering number, interface, voltage, motor and controller configuration.

For a faulty original amplifier, REACO CNC also provides professional Mitsubishi servo drive repair, including fault inspection, component-level repair and functional testing.

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