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MITSUBISHI Servo Drive
Brand: MITSUBISHI -
Cat: Servo Drive
Code:MR-J2S-200A
| Combination name | Availability | Price |
|---|---|---|
Servo Amplifier 2 kW – MITSUBISHI MR-J2S-200A
The MR-J2S-200A is a 2 kW digital servo amplifier (“Servo Amplifier”) belonging to the MELSERVO-J2-Super series by Mitsubishi Electric. Designed for CNC and industrial automation applications, it accepts pulse train or analogue commands and is compatible with brushless servo motors of the HC-KFS, HC-SFS and HF-SE families. The “A” suffix identifies the general-purpose variant (pulse/analogue interface), as opposed to the “B” version with SSCNET network. The drive integrates position, speed, and torque control modes in a single compact unit, with 17-bit serial incremental encoder feedback (131 072 p/rev).
The servo amplifier regulates in real time the position, speed, and torque of the CNC axis servo motor: it receives references from the numerical controller and closes the feedback loop via the motor encoder, ensuring precision and repeatability in machining movements. In the event of failure, the controlled axis becomes unmanageable — the machine enters alarm state and production halts until the drive is replaced or repaired.
Mitsubishi Electric is one of the world’s leading manufacturers of industrial automation and CNC systems. The MELSERVO line has covered the high-performance servo drive segment for decades. The J2-Super series has been superseded by the MR-J4 and subsequently MR-J5 series; this product is therefore legacy / discontinued, still available as used, NOS (new old stock), or through specialist repair centres.
Main Technical Specifications
| Type | Digital servo amplifier (Servo Amplifier) |
| Part number | MR-J2S-200A (MRJ2S200A) |
| Brand | Mitsubishi Electric – MELSERVO-J2-Super series |
| Known application | CNC machine tools, industrial robots, motion automation systems with MELSEC / Mitsubishi CNC controllers |
| Function | Closed-loop position, speed, and torque control of CNC axis servo motor |
| Rated output | 2.0 kW (2000 W) |
| Power supply | 3-phase 200–230 V AC, 50/60 Hz |
| Rated output current | ~9.4 A continuous (typical) |
| Control modes | Position (pulse train), Speed (analogue ±10 V), Torque (analogue) |
| Encoder interface | Serial incremental encoder – 131 072 p/rev (17-bit) |
| Interfaces | CN1 (digital I/O and analogue reference), CN2 (motor encoder), CN3 (RS-422 setup), power terminal strip |
| Weight | ~3.0–4.5 kg |
| Dimensions | ~170 × 380 × 170 mm W×H×D |
| Production status | Legacy / discontinued — used/surplus/repair only |
