Mitsubishi MR-J3W-77B Dual Axis Servo Amplifier

Key Product Features & Selling Points

• Dual Axis Control: One MR-J3W-77B drive controls two servo motors at once.
• High Power Density: It packs 750 watts of rated output in a small package.
• Advanced Network: Uses the fast SSCNET III fiber optic communication for real-time control.
• Complete Protection: Built-in safety stops for overcurrent, overheating, and undervoltage.
• Rugged Design: It works reliably in hot environments from 0 to +55°C.
• Forced Air Cooling: An internal fan keeps the amplifier cool during heavy use.

Detailed Technical Specifications

• Brand & Model: Mitsubishi MR-J3W-77B Servo Amplifier.
• Rated Output Power: 750 Watts (0.75 kW).
• Supply Voltage: 200 Volts AC (single or three-phase).
• Control Axes: Controls 2 motors simultaneously.
• Communication: High-speed SSCNET III fiber optic interface.
• Protection Functions: Overcurrent, Overheating, Undervoltage.
• Operating Temp: 0°C to +55°C.
• Cooling Method: Forced air cooling with a fan.
• Dimensions (HxWxD): 4.0" x 6.8" x 8.5" (10.2 x 17.1 x 21.6 cm).
• Weight: Approximately 4.69 lbs (2.13 kg).

Packaging & What's Included

• One (1) brand new Mitsubishi MR-J3W-77B servo amplifier unit.
• All necessary mounting screws and hardware.
• Printed user manual and installation guide.
• Package ready for safe shipping worldwide.

Shipping & Warranty Information

• We ship quickly using FedEx, UPS, or DHL.
• Track your order online from our warehouse to your door.
• This product includes a full 12-month warranty from Ubest Automation.
• Our warranty covers defects in materials and workmanship.

Professional FAQ

• What motors work with this amplifier? It pairs with Mitsubishi MELSERVO J3 series motors like the HF-KP.
• Can I control each axis independently? Yes, the MR-J3W-77B provides fully independent control for two motors.
• Does it need a separate power supply? No, it uses the main 200V input power for both control logic and motor power.
• What cable do I need for communication? You need an SSCNET III fiber optic cable to connect to your motion controller.
• Is this drive suitable for vertical axes? Yes, its built-in brake control function safely holds vertical loads.

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