Contents

Safety Instructions
CONTENTS
INTRODUCTION
1. SPECIFICATIONS OF ABSOLUTE POSITION DETECTION SYSTEM (ABS)
- 1.1 Configuration of absolute position detection system and preparation
- 1.2 Absolute position encoder specifications
- 1.3 Outline of absolute position data communications
2. WIRING AND TERMINALS
- 2.1 Wiring diagram
- 2.2 Terminals
3. ABSOLUTE POSITION DATA TRANSMISSION SEQUENCE
- 3.1 Absolute position data transmission sequence
- 3.2 Data transmission method
  - 3.2.1 Absolute position data transmission sequence at power ON
  - 3.2.2 Absolute position data transmission sequence when the alarm is reset
  - 3.2.3 Absolute position data transmission sequence when the emergency stop state is reset
4. HOME POSITION SETTING
- 4.1 Dog type home position setting
- 4.2 Data set type home position setting
5. TRANSMISSION OF ABSOLUTE POSITION DATA WHEN THE MOTOR WITH ELECTROMAGNETIC BRAKE IS USED
6. CONNECTION OF ABSOLUTE POSITION DETECTION SYSTEM AND TYPICAL SEQUENCE PROGRAMS
- 6.1 Connection example - MR-J2-A servo amplifier and MELSEC-A1S (A1SD71)
  - 6.1.1 Connection diagram
  - 6.1.2 Cautions on handling the absolute position detection system
  - 6.1.3 ABS sequence program example
  - 6.1.4 ABS sequence program example - 2-axis control
- 6.2 Connection example - MR-J2-A servo amplifier and MELSEC FX2-32MT (FX-1PG)
  - 6.2.1 Connection diagram
  - 6.2.2 ABS sequence program example
- 6.3 Connection example - MR-J2-A servo amplifier and MELSEC-A1SD75 (AD75)
  - 6.3.1 Connection diagram
  - 6.3.2 ABS sequence program example
  - 6.3.3 ABS sequence program example - 2-axis control
7. START-UP/MAINTENANCE
- 7.1 Parameter setting for the absolute position detection system
- 7.2 Checking the absolute position data
- 7.3 Start-up procedure for absolute position detection system
- 7.4 Maintenance and inspection
8. TROUBLESHOOTING
- 8.1 ABS error
- 8.2 ABS data transfer error
- 8.3 Processing of absolute position data at detection of forward/reverse rotaiton stroke end
REVISIONS

Mitsubishi Melservo-J2-A Installation Guide

Mitsubishi Melservo-J2-A Servo manual cover

Pages 67

Year 1997

Language(s)

of 67

Mitsubishi Melservo-J2-A Servo Specification

The Mitsubishi Melservo-J2-A Servo is a high-performance servo amplifier designed to deliver precise motion control for a variety of industrial applications. It supports a range of servo motors and is ideal for enhancing automation efficiency in manufacturing environments. This servo amplifier is part of Mitsubishi's Melservo-J2 series, known for its reliability, flexibility, and advanced control features.

The Melservo-J2-A Servo features a compact design, allowing for easy integration into existing systems while saving valuable space. It supports multiple control methods, including position, speed, and torque control, providing versatility to meet specific application requirements. The amplifier is equipped with advanced tuning functions, enabling users to optimize performance and achieve smooth, precise motion control with minimal effort.

The unit incorporates a high-resolution encoder, ensuring accurate feedback and improved control accuracy. Its built-in protective functions enhance system reliability by safeguarding against overcurrent, overvoltage, and overheating. The Melservo-J2-A is compatible with a wide range of field networks, including SSCNET, providing seamless connectivity and communication in networked environments.

Its user-friendly interface and software tools facilitate easy setup, programming, and monitoring. The servo amplifier supports a broad input power range, making it suitable for diverse industrial settings. Additionally, its energy-saving features contribute to reduced operational costs by optimizing power consumption.

Overall, the Mitsubishi Melservo-J2-A Servo combines robust performance with advanced features to deliver superior motion control solutions. It is tailored for industries demanding high precision and reliability, such as robotics, packaging, and material handling, making it a versatile component in modern automation systems.

Mitsubishi Melservo-J2-A Servo F.A.Q.

How do I initialize the Mitsubishi Melservo-J2-A Servo?

To initialize the Melservo-J2-A Servo, ensure all connections are properly made, power on the servo amplifier, and use the MR Configurator software to detect and initialize the servo amplifier. Follow the on-screen instructions to complete the setup.

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

Check the power supply to ensure it is within the specified range, verify all connections, inspect for alarm indicators on the servo amplifier, and consult the error code manual to address specific issues.

How can I adjust the servo gain settings for optimal performance?

Use the MR Configurator software to access the gain adjustment settings. Experiment with different proportional, integral, and derivative gains while monitoring the system's response to achieve desired performance.

What should I do if the servo amplifier displays an overcurrent alarm?

Check the motor connection for any short circuits or loose connections. Reduce the load on the motor, and verify that the motor and amplifier ratings match the application's requirements.

How do I perform regular maintenance on the Melservo-J2-A Servo system?

Regularly inspect the servo motor and amplifier for dust accumulation and clean them as needed. Check the connections and cables for wear or damage. Ensure ventilation paths are clear and the cooling fan is operational.

Can the Melservo-J2-A Servo be used in high-precision applications?

Yes, the Melservo-J2-A Servo is suitable for high-precision applications due to its high-resolution encoder and advanced control algorithms, which allow for precise positioning and speed control.

How can I reset an alarm on the Melservo-J2-A Servo amplifier?

Press the reset button on the servo amplifier or use the MR Configurator software to clear alarms. Ensure the root cause of the alarm is addressed before resetting.

What is the procedure for replacing a servo motor in the Melservo-J2-A system?

First, disconnect power to the system. Label and disconnect all cables from the motor. Remove the motor mounting bolts and replace the motor. Reconnect cables, ensuring correct alignment, and perform a test run to verify operation.

How do I connect the Melservo-J2-A Servo to a PLC?

Use a compatible communication interface such as RS-485 or a dedicated motion control network. Configure the communication parameters on both the servo amplifier and PLC, ensuring correct baud rates and addressing.

What are the steps for upgrading the firmware on the Melservo-J2-A Servo amplifier?

Download the latest firmware from the Mitsubishi Electric website. Connect the servo amplifier to a computer using the appropriate interface, and use the MR Configurator software to upload and install the new firmware.