Mitsubishi MR-J3-DU11KBS4: 11kW Safety-Rated Servo Amplifier

Implement powerful and safe motion control for critical applications. The Mitsubishi MR-J3-DU11KBS4 is an 11-kilowatt servo amplifier with integrated safety functions. It meets stringent safety standards while delivering high power for demanding axes. This drive is essential for applications where personnel safety and equipment protection are paramount.

Detailed Technical Specifications

• Product Model: Mitsubishi MR-J3-DU11KBS4 (MELSERVO J3 Safety Series).
• Power Rating: 11 kW output power, 24 A rated current.
• Power Supply: Three-phase 380-480V AC, 50/60 Hz (400V Class).
• Safety Functions: Safe Torque Off (STO), Safe Stop 1 (SS1) as standard.
• Control Method: Sine-wave PWM control with current feedback.
• Communication: SSCNET III high-speed fiber optic motion network.
• Cooling: Forced ventilation cooling.
• Operating Temperature: 0°C to +55°C ambient.
• Mounting: Panel mount design for secure installation within a control cabinet.

Installation & Safety Integration

• Safety Circuit Wiring: Must be connected to safety devices (e.g., door switches, E-stops) using dual-channel, safety-rated wiring practices as per the manual and applicable standards (ISO 13849-1, IEC 62061).
• Motor Compatibility: Pairs with compatible 400V class Mitsubishi servo motors. Verify the motor's safety compatibility for full system certification.
• Thermal Management: Ensure the control cabinet provides adequate airflow for the forced cooling system, especially important at high power levels.
• Configuration & Validation: Safety functions require proper parameter setting and validation (e.g., checking stop time for SS1) to ensure the system meets the required Performance Level (PL).
• Network Integration: Connects to a safety-capable motion controller via SSCNET III for coordinated safe motion control across multiple axes.

Packaging & Support Details

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

Expert FAQs

• What is the practical difference between STO and SS1?
  STO (Safe Torque Off) immediately removes power to the motor, resulting in an uncontrolled coasting stop. SS1 (Safe Stop 1) initiates a controlled deceleration to stop the motor *before* removing torque, then engages STO. SS1 is used when an uncontrolled stop could itself be hazardous.
• Can this drive be used in a non-safety application?
  Yes, its safety functions can be disabled or not wired. However, you are paying a premium for the safety certification. For a pure performance application without safety needs, a standard MR-J3-11KB model might be more cost-effective.
• What certifications does this safety amplifier hold?
  It is typically designed to meet international standards like IEC 61508 (SIL 3) and ISO 13849-1 (PL e, Category 3). Always check the specific unit's declaration of conformity for the exact certifications.
• Is external safety monitoring required?
  While the drive contains the safety functions, best practice often involves an external safety controller or relay to monitor the overall safety circuit, providing redundancy and diagnostics for the safety system.
• How does forced ventilation cooling work in a sealed safety cabinet?
  The drive's fan circulates air internally over its heat sink. The cabinet itself must have adequate heat exchange, possibly via a cabinet cooler or heat exchanger, to remove the heat from the enclosed environment and maintain ambient temperature below 55°C.

© 2025 Ubest Automation Limited. All rights reserved.
Original Source: https://www.ubestplc.com/
Contact: sales@ubestplc.com Phone: +86 180 3000 5825