Contents

List of Corrections Made to the MR-J2-B Specifications and Installation Guide
Addition to the MR-J2-B Specifications and Installation Guide
Safety Instructions
COMPLIANCE WITH EC DIRECTIVES
CONFORMANCE WITH UL/C-UL STANDARD
CONTENTS
1. INTRODUCTION
- 1 - 1 Inspection at delivery
  - 1 - 1 - 1 Packing list
  - 1 - 1 - 2 Model definition
  - 1 - 1 - 3 Combination with servo motor
- 1 - 2 Parts identification and applications
  - 1 - 2 - 1 Servo amplifier
  - 1 - 2 - 2 Servo motor
- 1 - 3 Function list
- 1 - 4 Basic configuration
2. OPERATION
- 2 - 1 Standard connection example
- 2 - 2 Operation
  - 2 - 2- 1 Pre-operation checks
  - 2 - 2- 2 Power on
  - 2 - 2 - 3 Stop
- 2 - 3 Display
- 2 - 4 Parameters
- 2 - 5 Test operation mode
- 2 - 6 Adjustments
  - 2 - 6 - 1 Auto tuning
  - 2 - 6 - 2 Manual gain adjustment
  - 2 - 6 - 3 Slight vibration suppression control
3. WIRING
- 3 - 1 Servo amplifier
  - 3 - 1 - 1 Terminal blocks
  - 3 - 1 - 2 Signal connectors
  - 3 - 1 - 3 Interfaces
  - 3 - 1 - 4 Control axis selection
- 3 - 2 Connection of servo amplifier and servo motor
  - 3 - 2 - 1 Connection instructions
  - 3 - 2 - 2 Connection diagram
  - 3 - 2 - 3 I/O terminals
  - 3 - 2 - 4 Connectors used for servo motor wiring
- 3 - 3 Common line
- 3 - 4 Grounding
- 3 - 5 Power supply circuit
- 3 - 6 Alarm occurrence timing chart
- 3 - 7 Servo motor with electromagnetic brake
4. INSTALLATION
- 4 - 1 Servo amplifier
- 4 - 2 Servo motor
5. ABSOLUTE POSITION DETECTION SYSTEM
6. OPTION AND AUXILIARY EQUIPMENT
- 6 - 1 Dedicated options
  - 6 - 1 - 1 Regenerative brake options
  - 6 - 1 - 2 Cable connectors
  - 6 - 1 - 3 Maintenance junction card
  - 6 - 1 - 4 Set-up software (will be released soon)
- 6 - 2 Auxiliary equipment
  - 6 - 2 - 1 Cables
  - 6 - 2 - 2 No-fuse breakers, fuses, magnetic contactors
  - 6 - 2 - 3 Power factor improving reactors
  - 6 - 2 - 4 Relays
  - 6 - 2 - 5 Surge absorbers
  - 6 - 2 - 6 Noise reduction techniques
  - 6 - 2 - 7 Leakage current breaker
  - 6 - 2 - 8 Battery (MR-BAT, A6BAT)
7. INSPECTION
8. TROUBLESHOOTING
- 8 - 1 Alarm and warning lists
- 8 - 2 Remedies for alarms
- 8 - 3 Remedies for warnings
9. CHARACTERISTICS
- 9 - 1 Overload protection characteristics
- 9 - 2 Losses generated in the servo amplifier
- 9 - 3 Electromagnetic brake characteristics
- 9 - 4 Dynamic brake characteristics
- 9 - 5 Vibration rank
10. SPECIFICATIONS
- 10 - 1 Standard specifications
- 10 - 2 Torque characteristics
- 10 - 3 Servo motors with reduction gears
- 10 - 4 Servo motors with special shafts
- 10 - 5 Outline dimension drawings
  - 10 - 5 - 1 Servo amplifiers
  - 10 - 5 - 2 Servo motors

Mitsubishi Electric MRJ2 B Installation Guide

Pages 197

Year 2000

Language(s)

of 197

Mitsubishi Electric MRJ2 B Specification

The Mitsubishi Electric MRJ2 B is a sophisticated servo amplifier series engineered for precision motion control applications. It offers a compact design, ensuring ease of integration into various industrial systems. The MRJ2 B series supports a wide range of motor capacities, enhancing its versatility in different operational environments. It is equipped with advanced control functions, including auto-tuning and adaptive vibration suppression, that optimize performance and ensure high precision and stability during operations. The servo amplifier features a high-speed serial communication interface, allowing seamless connectivity and efficient data exchange with other automation devices. It also supports multiple control modes such as position, speed, and torque control, providing flexibility for various application requirements. The MRJ2 B incorporates a built-in dynamic brake and regenerative energy function, contributing to energy efficiency and safety in mechanical systems. The amplifier is designed to be user-friendly, with intuitive parameter setting options and diagnostic features that simplify maintenance and troubleshooting. Additionally, it is compliant with international safety standards, ensuring reliable operation in diverse industrial settings. Its robust construction and reliable performance make it suitable for demanding applications, including robotics, CNC machinery, and conveyor systems. The MRJ2 B series exemplifies Mitsubishi Electric's commitment to innovation, offering a reliable and efficient solution for advanced motion control needs.

Mitsubishi Electric MRJ2 B F.A.Q.

How do I perform a basic setup for the Mitsubishi Electric MRJ2 B servo drive?

To perform a basic setup, connect the servo drive to your PC using the RS-232 cable. Use the MR Configurator software to configure parameters such as motor type, control mode, and I/O settings. Ensure that the power supply and wiring are correct before powering on the system.

What should I do if the MRJ2 B servo drive displays an alarm code?

First, refer to the manual to identify the alarm code and its meaning. Common causes include overcurrent, overload, or encoder errors. Check the motor connections, inspect for mechanical obstructions, and ensure the encoder is functioning properly. Reset the alarm by cycling the power if necessary.

How can I optimize the performance of my MRJ2 B servo motor?

Adjust the gain parameters using the MR Configurator software to achieve optimal performance. Perform auto-tuning for the servo motor to automatically set the gain values. Fine-tune the parameters manually if specific motion characteristics are required.

What maintenance should be regularly performed on the MRJ2 B servo system?

Regularly inspect electrical connections for tightness, check for signs of overheating or wear on components, and ensure that the cooling system is functioning properly. Clean the system to prevent dust buildup and check the firmware for any available updates.

How do I update the firmware on my Mitsubishi Electric MRJ2 B servo drive?

Connect the servo drive to your PC and launch the MR Configurator software. Navigate to the firmware update section. Follow the prompts to select and upload the latest firmware file. Ensure that the power supply is stable during the update process to prevent interruptions.

What are common troubleshooting steps if the servo motor does not start?

Verify that the power supply is connected and the drive is receiving power. Check all connections and ensure that emergency stop circuits are not active. Review parameter settings in the MR Configurator to confirm that they are correct. Inspect for mechanical blockages or faults in the motor itself.

Can I operate the MRJ2 B servo drive in a networked environment?

Yes, the MRJ2 B can be integrated into a networked environment using RS-485 or other communication protocols supported by the drive. Configure the communication settings in the MR Configurator and ensure proper addressing and termination for network stability.

How do I configure the MRJ2 B for position control mode?

In the MR Configurator, set the control mode to 'Position Control'. Define the necessary parameters such as speed, acceleration, and target positions. Ensure that the encoder feedback is correctly configured for accurate positioning.

What safety precautions should I take when working with the MRJ2 B servo system?

Ensure that the power is off before performing any maintenance. Use appropriate personal protective equipment (PPE) and follow lockout/tagout procedures. Be aware of moving parts and avoid working in close proximity to the motor during operation.

How can I test the functionality of the MRJ2 B servo motor after installation?

Perform a test run using the MR Configurator software. Check for smooth operation and listen for unusual noises. Verify that the motor reaches the desired positions with the correct speed and accuracy. Monitor the system for any alarms or error codes during the test.