Mitsubishi MR-J3-22KB4RJ4U532: High-Power 400V Servo Amplifier

Drive large industrial servo motors with immense power. The Mitsubishi MR-J3-22KB4RJ4U532 is a high-capacity servo amplifier from the MELSERVO series. It delivers a substantial 22 kilowatts of output from a 400V three-phase AC supply. This drive is engineered for demanding applications like large presses, heavy conveyors, and industrial robotics.

Detailed Technical Specifications

• Product Model: Mitsubishi MR-J3-22KB4RJ4U532 (MELSERVO J3 Series).
• Power Rating: 22 kW rated output power.
• Power Supply: 400V AC, 3-phase input.
• Control Interface: SSCNET III (High-speed serial communication network).
• Control Method: Sine-wave Pulse Width Modulation (PWM) with current feedback loop.
• Protection Rating: IP00 (Open chassis), must be installed inside a protective electrical enclosure.
• Operating Temperature: 0°C to 55°C.
• Compliance: Meets CE, UL, and RoHS standards for safety and environmental regulations.

Installation & System Integration

• Motor Compatibility: Designed to pair with Mitsubishi HC-SF, HC-RF, and HC-UF series 400V servo motors of corresponding power.
• Cooling Requirement: Requires adequate forced air cooling within the control panel due to high power dissipation.
• Network Integration: SSCNET III allows daisy-chaining of multiple drives back to a single motion controller for centralized programming and sequencing.
• Safety Integration: Supports connection of safety devices and can be integrated into safety-rated systems with appropriate configuration.

Packaging & Support Details

• The servo amplifier is shipped as a single unit in protective packaging.
• This high-power drive is covered by our standard warranty terms.
• Global express shipping is available via FedEx, UPS, and DHL.

Expert FAQs

• What type of machinery typically uses a 22kW servo drive?
  This drive is suited for heavy-duty applications such as large metal forming presses, plastic injection molding machines, heavy-duty material handling cranes, large CNC machines, and test stands requiring high dynamic response.
• What are the advantages of the SSCNET III interface?
  SSCNET III provides noise-immune fiber optic communication, high-speed synchronous control of multiple axes (up to 1.5 Mbps), and simplifies wiring by reducing the number of cables between the controller and drives.
• Does this drive require external regenerative resistors?
  High-power drives like this often require large external regenerative resistor units to dissipate braking energy, especially when stopping high-inertia loads frequently. The requirement depends entirely on the specific machine's cycle and inertia.
• Can it operate on a standard 480V AC supply?
  It is designed for 400V AC 3-phase input. A 480V supply would be too high and could damage the unit. A step-down transformer would be required to use this drive on a 480V system.
• What is the key consideration for panel design when using this amplifier?
  Heat management is critical. You must ensure sufficient airflow (CFM) across the heat sink, proper clearances around the unit, and possibly additional cabinet cooling (fans, air conditioners) to maintain ambient temperature below 55°C.

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