Mitsubishi MR-J3-10A4-RJ070: 11kW Servo Amplifier with Integrated Safety

Control demanding industrial axes with power and safety. The Mitsubishi MR-J3-10A4-RJ070 is an 11-kilowatt servo amplifier. It provides versatile position, speed, and torque control for complex motion tasks. This drive includes an integrated Safe Torque Off (STO) safety function, helping you meet machine safety standards.

Detailed Technical Specifications

• Product Model: Mitsubishi MR-J3-10A4-RJ070 (MELSERVO J3 Series).
• Power Rating: 11 kW rated output power.
• Power Supply: 3-phase, 400 VAC, 50/60 Hz.
• Control Modes: Position control, Speed control, and Torque control.
• Safety Function: Integrated Safe Torque Off (STO).
• Cooling Method: Forced air cooling (self-cooled, open structure).
• Operating Temperature: 0°C to 55°C.
• Humidity Range: 10% to 90% (non-condensing).
• Communication: Compatible with Mitsubishi SSCNET III high-speed motion network.

Installation & System Integration

• Mounting & Enclosure: Open chassis design (IP00); must be installed inside a protective electrical cabinet.
• Thermal Management: Ensure adequate cabinet airflow to maintain ambient temperature within the 0-55°C range.
• Motor Compatibility: Pairs with Mitsubishi HC-SF, HC-RF, and HC-UF series 400V servo motors of corresponding power.
• Safety Integration: The STO function requires connection to a safety relay or safety controller via dedicated safety input terminals.
• Control Interface: Use pulse train input for step/direction commands from a PLC or use analog input for speed/torque command from a process controller.

Packaging & Support Details

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

Expert FAQs

• What is the main advantage of having an integrated STO function?
  It simplifies safety system design and reduces components. You can directly connect safety door switches or E-stop buttons to the drive's safety terminals, eliminating the need for an external safety relay to cut main power, while still achieving safe stop category 0 or 1.
• When would I use Torque Control mode?
  Torque control is used in applications like winding tension control, press force control, or in a master-follower system where one axis (follower) must apply a specific torque relative to another (master).
• Can this drive be used in a standalone application without a motion controller?
  Yes. Using its pulse train input, it can accept step and direction signals directly from a PLC's high-speed outputs to perform point-to-point positioning. Its analog input can also accept a speed reference voltage (e.g., 0-10V).
• What is the significance of the "RJ070" suffix in the model number?
  This typically indicates a specific regional variant, often related to the supplied connectors, documentation language, or compliance markings (like CE, UL). It's important to specify the exact suffix for compatibility with local standards.
• How does forced air cooling work with this drive?
  The drive has an internal fan that draws air through its heat sink. You must ensure there is clear air intake and exhaust in the control cabinet. Do not block the vents on the drive, and maintain the recommended clearances around the unit specified in the manual.

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