Mitsubishi MR-J2S-200B MELSERVO J2S 2kW SSCNET III/H Servo Amplifier

Mitsubishi Electric MELSERVO J2‑Super series MR‑J2S‑200B is a high‑performance AC servo amplifier for industrial motion control and automation systems. Rated output 2 kW (2000 W) at 200‑230 V AC, single‑phase or three‑phase input. Built‑in SSCNET III/H high‑speed fiber‑optic communication interface enables multi‑axis synchronization with Mitsubishi motion controllers. Supports position, speed, and torque control modes with 17‑bit absolute encoder feedback (131,072 pulses/revolution). This product is discontinued and available as a spare part for maintaining existing MELSERVO J2S‑based systems. For new installations, the recommended replacement is the MELSERVO‑J4 series (MR‑J4‑200B).

Applications:

• Multi‑axis motion control in automated assembly lines and pick‑and‑place robotics

• CNC machine tools and high‑speed positioning equipment

• Semiconductor manufacturing and precision electronics assembly

• Packaging machinery, labeling equipment, and material handling systems

Technical Specifications:

Core Specifications

• Rated output power: 2 kW (2000 W)

• Rated output current: 10.5 A

• Supply voltage: 200‑230 V AC, 50/60 Hz (single‑phase or three‑phase input)

• Control interface: SSCNET III/H (high‑speed fiber‑optic communication)

• Control modes: Position, speed, torque control

• Encoder feedback: 17‑bit absolute/incremental encoder (131,072 pulses/revolution)

• Speed loop frequency response: ≥550 Hz

• Built‑in dynamic brake: yes

• Built‑in regenerative resistor: yes

• Cooling method: Internal drive cooling

I/O & Protection

• Digital inputs: 9 (24 V DC)

• Digital outputs: 3 (relay contacts)

• Protection functions: Overcurrent shut‑off, regeneration overvoltage shut‑off, overload shut‑off (electronic thermal), servo motor overheat protection, encoder fault protection, undervoltage protection, overspeed protection, excessive error protection

Physical & Environmental

• Ambient operating temperature: 0 °C … +55 °C

• Storage temperature: –20 °C … +65 °C

• Operating humidity: 10 % … 90 % (non‑condensing)

• Altitude: 1,000 m max.

• Dimensions (W × H × D): 70 mm × 168 mm × 135 mm

• Weight: approx. 2 kg / 4.4 lbs

• Enclosure rating: IP20

Motor Compatibility:

• Designed for Mitsubishi HC‑SFS series (medium‑inertia) and HC‑KF/HC‑MF series (low‑inertia) servo motors

• Compatible motors: HC‑SFS121, HC‑SFS152, HC‑SFS153, HC‑SFS201, HC‑SFS202, HC‑SFS203, HC‑LFS152

• Supports 17‑bit absolute encoder feedback (battery‑backed position retention required for absolute mode)

System Integration:

• This amplifier belongs to the Mitsubishi Electric MELSERVO J2‑Super series.

• SSCNET III/H high‑speed fiber‑optic communication enables multi‑axis synchronization with Mitsubishi motion controllers (Q17, Q170, Q172 series).

• For detailed wiring, connector pinout, and parameter setting, refer to the MR‑J2S‑B Instruction Manual.

Product Status:
Discontinued. Mitsubishi Electric has discontinued the MELSERVO J2S series. Repair service is no longer available. For legacy system maintenance, this module remains available as a spare part while stocks permit. For new installations, use the recommended successor (MR‑J4‑200B).

Recommended replacement:

• MR‑J4‑200B: MELSERVO‑J4 series 2 kW servo amplifier with SSCNET III/H fiber‑optic communication, 22‑bit absolute encoder support, advanced vibration suppression control, and one‑touch tuning. Requires complete drive and motor replacement; not directly compatible with existing wiring or control systems without migration considerations.

Related Products:

• Entry level (lower power) → MR‑J2S‑100B (1 kW, SSCNET III/H)

• Current model (discontinued) → MR‑J2S‑200B (2 kW, SSCNET III/H)

• Higher power → MR‑J2S‑350B (3.5 kW, SSCNET III/H)

• Recommended replacement for new designs → MR‑J4‑200B (MELSERVO‑J4 series)