MITSUBISHI MR-J3-D05 Safety Logic Unit

1. Product Detailed Description

The MR-J3-D05 serves as a DC power supply unit that converts AC input into a stable DC voltage for the MR-J3 series servo amplifiers. It is typically used in multi-axis systems where multiple servo motors operate simultaneously. By using a shared DC bus, the system can redistribute regenerative energy from decelerating motors to those that are accelerating, significantly reducing overall power consumption and heat dissipation.

2. Technical Specifications

3. Key Advantages

• Energy Efficiency: The common DC bus allows for "energy sharing" between axes, reducing the need for external regenerative resistors and lowering electricity costs.

• Space Saving: By centralizing the power supply, you can eliminate multiple individual power cables and circuit breakers, resulting in a much cleaner and more compact control cabinet.

• High Reliability: Built with Mitsubishi’s industry-leading semiconductor technology, ensuring stable operation even in demanding industrial environments.

• Simplified Wiring: Reduces the complexity of the AC input wiring, as only the converter unit requires a high-capacity AC connection.

4. Safety & Operational Precautions

• Wait for Discharge: After turning off the power, wait at least 15-20 minutes for the charge lamp to turn off before touching terminals. The DC bus retains high voltage that can be lethal.

• Proper Grounding: Ensure the unit is grounded correctly to prevent electrical noise interference and protect personnel.

• Correct Pairing: Only use the MR-J3-D05 with specific DC-input compatible servo amplifiers. Using it with standard AC-input amplifiers may cause permanent damage.

• Ventilation: Do not block the cooling fans or vents. Maintain the specified clearance distances within the cabinet to prevent overheating.

5. Product Applications

The MR-J3-D05 is ideal for complex, multi-axis machinery where synchronized movement is required:

• Printing Machinery: Managing multiple rollers and tension control axes.

• Packaging Systems: Synchronizing conveyors, feeders, and sealers.

• Automotive Assembly: Powering robotic arms and positioning stages. 

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