Mitsubishi MR-J4-20B MELSERVO-J4 200W SSCNET III/H Servo Amplifier

Mitsubishi Electric MELSERVO-J4 MR-J4-20B is a high‑performance AC servo amplifier for precise motion control in industrial automation and OEM systems. Rated output 200 W (0.2 kW) at 200‑240 V AC, single‑phase or three‑phase input. Built‑in dynamic brake, regenerative resistor, and SSCNET III/H high‑speed fiber‑optic communication interface for synchronized multi‑axis control. Advanced vibration suppression control, one‑touch tuning, 22‑bit high‑resolution encoder support, and Safe Torque Off (STO) safety function. 40 mm width for space‑saving panel mounting, IP20 enclosure, natural cooling.

Applications:

• High‑precision small‑scale motion control in semiconductor and electronics assembly

• Compact robotics and pick‑and‑place systems

• Packaging machinery and labeling equipment

• Medical equipment and laboratory automation

Core Specifications:

• Rated output power: 200 W (0.2 kW)

• Rated output current: 1.5 A

• Supply voltage: 200‑240 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: 22‑bit absolute encoder (4,194,304 pulses/revolution)

• Safety function: STO (Safe Torque Off) per IEC/EN 61800‑5‑2

• Built‑in dynamic brake: yes

• Built‑in regenerative resistor: yes

• Cooling method: Natural cooling (fanless)

• Enclosure rating: IP20

Advanced Specifications:

• Digital inputs: 4 (EM2, FLS, RLS, DOG – 24 V DC, sink/source)

• Digital outputs: 3 (ALM – relay contact, MBR – relay contact, INP – relay contact)

• Analog outputs: 2 (–10 … +10 V DC, MO1 and MO2)

• Power consumption (control circuit): 30 W

• Input current consumption: 1.5 A

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

• Storage temperature: –20 °C … 65 °C

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

• Altitude: 1,000 m max.

• Vibration resistance: 5.9 m/s² (10 to 55 Hz)

• Dimensions (W × H × D): 40 mm × 168 mm × 135 mm

• Weight: approx. 0.8 kg

• Certifications: CE, cULus, TÜV Rheinland, KC, UL 508C, EN 61800‑5‑2, EN 61800‑5‑1, EN 61800‑3, EN ISO 13849‑1 (PLe/Cat 3), EN 62061 (SILCL3)

System Integration:

• This amplifier belongs to the Mitsubishi Electric MELSERVO-J4 series.

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

• J3 compatibility mode allows easy replacement of MR‑J2S‑B or MR‑J3‑B systems.

• For detailed wiring, connector pinout, and parameter setting, refer to the MR-J4‑B Instruction Manual.

Related Products:

• MR‑J4‑10B – 100 W version for lower power requirements

• MR‑J4‑40B – 400 W version for higher power requirements

• HG‑KR13 – 100 W low‑inertia servo motor with 22‑bit encoder

• MR‑J3BUS01M / MR‑J3BUS05M / MR‑J3BUS1M – SSCNET III/H fiber‑optic cables

• MR‑BTBLCBL02M‑B – Dynamic brake cable (external use)

• MR‑BKS1CBL03M‑A – Battery cable for absolute encoder