Mitsubishi MR-J2S-100A MELSERVO J2S 1kW Universal Interface Servo Amplifier

Mitsubishi Electric MELSERVO J2‑Super series MR‑J2S‑100A is a universal interface AC servo amplifier for precise motion control in industrial automation systems. Rated output 1 kW at 200‑230 V AC, single‑phase or three‑phase input. Sine‑wave PWM control method with position, speed, and torque control modes. Speed loop frequency response ≥550 Hz for high‑speed positioning applications. Built‑in dynamic brake and natural cooling. This product is discontinued and available as a spare part for maintaining existing MELSERVO J2S‑based systems. For new installations, use the recommended successor (MR‑J4‑100A).

Applications:

• CNC machine tools and high‑speed positioning equipment

• Automated assembly lines and pick‑and‑place robotics

• Packaging machinery and labeling equipment

• Semiconductor and electronics manufacturing equipment

• Material handling systems and automated guided vehicles

• Printing presses and textile machinery

Technical Specifications:

Core Specifications

• Product type: MELSERVO J2‑Super series servo amplifier

• Rated output power: 1 kW (1000 W)

• Rated output current: 6 A

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

• Permissible voltage fluctuation: 170‑253 V AC

• Control methods: Sine‑wave PWM control, current control method

• Control modes: Position, speed, torque

• Speed loop frequency response: ≥550 Hz

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

• Built‑in dynamic brake: Yes

• Cooling method: Natural cooling (fanless)

• Enclosure rating: IP20

I/O & Interfaces

• Digital inputs: 8 (24 V DC, sink/source: EMG, LSP, LSN, SON, RES, PC/ST1/RS2, TL/ST2/RS1, SP2)

• Digital outputs: 3 (relay contact type: ALM, ZSP, TLC/VLC)

• Analog inputs: 1 × 0‑10 V DC (TLA/TC), 1 × –10 to +10 V DC (VC/VLA)

• Communication protocol: No built‑in fieldbus (universal interface – pulse train/analog command)

Position Control Specifications

• Max. input pulse frequency: 500 kpps (differential line driver), 200 kpps (open‑collector)

• Electronic gear: A/B multiplication (A = 1‑65535, B = 1‑65535, 1/50 < A/B < 500)

• Positioning complete width: 0 to ±10,000 pulses (command pulse unit)

• Torque limit: Parameter setting or external analog input (0 to +10 V)

Speed Control Specifications

• Speed control range: 1:2000 (analog speed command), 1:5000 (internal speed command)

• Analog speed command input: 0 to ±10 V DC / rated speed

• Speed fluctuation rate (load change 0‑100%): ±0.01% max.

• Torque limit: Parameter setting or external analog input (0 to +10 V DC)

Torque Control Specifications

• Analog torque command input: 0 to ±8 V DC

• Speed limit: Parameter setting or external analog input (0 to +10 V DC)

Protection Functions
Overcurrent shut‑off, regenerative overvoltage shut‑off, overload shut‑off (electronic thermal), servo motor overheat protection, encoder fault protection, regeneration fault protection, undervoltage/power outage protection, overspeed protection, excessive error protection

Environmental & Physical Specifications

• Dimensions (H × W × D): 168 mm × 70 mm × 190 mm

• Weight: approx. 3.0 kg

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

• Storage temperature: –20 °C … 65 °C

• Operating humidity: ≤ 90 % RH (non‑condensing)

• Altitude: ≤ 1,000 m

• Vibration resistance: 5.9 m/s² max.

Motor Compatibility:

• Compatible servo motors: HC‑SFS series (medium‑inertia) and HC‑LFS series (low‑inertia)

• Compatible motors: HC‑SFS102, HC‑SFS103, HC‑LFS102, HC‑KFS73

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

• In absolute encoder mode, an external battery (MR‑BAT6V1SET) is required for position retention during power‑off

System Integration:

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

• Universal interface supports pulse train (differential line driver or open collector) and analog voltage commands.

• Parameter setting and monitoring performed via MR Configurator software using RS‑422/RS‑232C communication.

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

Product Status:
Discontinued. Mitsubishi Electric has discontinued the MELSERVO J2S series (introduced 1999, discontinued 2015). Repair service is no longer available. Available as a spare part for maintaining existing MELSERVO J2S‑based systems while stocks permit. For new installations, use the recommended successor (MR‑J4‑100A) with HG motor family.

Recommended Replacement:

• MR‑J4‑100A: MELSERVO‑J4 series 1 kW servo amplifier with 4 Mpps pulse input, 2.5 kHz speed frequency response, 22‑bit absolute encoder support, advanced vibration suppression control, and one‑touch tuning. For systems retaining existing HC series motors, Mitsubishi offers renewal tools and staged migration pathways (primary replacement: amplifier only; secondary: motor following amplifier).

Cables & Accessories (order separately):

• MR‑BAT6V1SET – Battery for absolute encoder

• MR‑J3ENCBL2M‑A1 – Encoder cable, 2 m (standard bending life)

• MR‑PWS1CBL2M‑A1 – Power cable, 2 m

• MR‑J2S‑RENEWAL‑KIT – Primary upgrade renewal tool (for MR‑J2S to MR‑J4 migration)

Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information.