Contents

Safety Instructions
About processing of waste
COMPLIANCE WITH EC DIRECTIVES
CONFORMANCE WITH UL/C-UL STANDARD
About the manuals
CONTENTS
1. FUNCTIONS AND CONFIGURATION
- 1.1 Overview
- 1.2 Function block diagram
- 1.3 Unit standard specifications
- 1.4 Function list
- 1.5 Model code definition
- 1.6 Combination with servo motor
- 1.7 Parts identification
- 1.8 Servo system with auxiliary equipment
2. INSTALLATION AND START UP
- 2.1 Environmental conditions
- 2.2 Installation direction and clearances
- 2.3 Keep out foreign materials
- 2.4 Cable stress
- 2.5 Mounting method
- 2.6 When switching power on for the first time
- 2.7 Start up
3. SIGNALS AND WIRING
- 3.1 Control signal line connection example
- 3.2 I/O signals of interface unit
  - 3.2.1 Connectors and signal arrangements
  - 3.2.2 Signal explanations
  - 3.2.3 Detailed description of the signals
  - 3.2.4 Internal connection diagram
  - 3.2.5 Interface
- 3.3 Signal and wiring for extension IO unit
  - 3.3.1 Connection example
  - 3.3.2 Connectors and signal configurations
  - 3.3.3 Signal explanations
  - 3.3.4 Device explanations
  - 3.3.5 Detailed description of the device
  - 3.3.6 Device assignment method
- 3.4 Signals and wiring for base unit
  - 3.4.1 Connection example for power line circuit
  - 3.4.2 Connectors and signal configurations
  - 3.4.3 Terminals
  - 3.4.4 Power-on sequence
- 3.5 Connection of drive unit and servo motor
  - 3.5.1 Connection instructions
  - 3.5.2 Connection diagram
  - 3.5.3 I/O terminals
- 3.6 Alarm occurrence timing chart
- 3.7 Servo motor with electromagnetic brake
- 3.8 Grounding
- 3.9 Instructions for the 3M connector
4. OPERATION AND DISPLAY
- 4.1 Display flowchart
  - 4.1.1 Normal indication
  - 4.1.2 If alarm/warning occurs
  - 4.1.3 If test operation
- 4.2 Interface unit display
  - 4.2.1 Display flowchart of interface unit
  - 4.2.2 Status display of interface unit
  - 4.2.3 Diagnostic mode of interface unit
  - 4.2.4 Alarm mode of interface unit
  - 4.2.5 Interface unit parameter mode
  - 4.2.6 Interface unit output signal (DO) forced output
- 4.3 Drive unit display
  - 4.3.1 Drive unit display sequence
  - 4.3.2 Status display of drive unit
  - 4.3.3 Diagnostic mode of drive unit
  - 4.3.4 Alarm mode of drive unit
  - 4.3.5 Drive unit parameter mode
  - 4.3.6 Drive unit external input signal display
  - 4.3.7 Drive unit external output signal display
  - 4.3.8 Drive unit output signal (DO) forced output
5. PARAMETERS
- 5.1 DRU parameter list
  - 5.1.1 DRU parameter write inhibit
  - 5.1.2 Lists
- 5.2 Interface unit
  - 5.2.1 IFU parameter write inhibit
  - 5.2.2 Lists
- 5.3 Detailed description
  - 5.3.1 Electronic gear
  - 5.3.2 Analog monitor
  - 5.3.3 Using forward rotation stroke end (LSP[ ] ) reverse rotation stroke end (LSN[ ] ) to change the stopping pattern
  - 5.3.4 Alarm history clear
  - 5.3.5 Position smoothing
6. GENERAL GAIN ADJUSTMENT
- 6.1 Different adjustment methods
  - 6.1.1 Adjustment on a MELSERVO-J2M
  - 6.1.2 Adjustment using MR Configurator (servo configuration software)
- 6.2 Auto tuning
  - 6.2.1 Auto tuning mode
  - 6.2.2 Auto tuning mode operation
  - 6.2.3 Adjustment procedure by auto tuning
  - 6.2.4 Response level setting in auto tuning mode
- 6.3 Manual mode 1 (simple manual adjustment)
  - 6.3.1 Operation of manual mode 1
  - 6.3.2 Adjustment by manual mode 1
- 6.4 Interpolation mode
7. SPECIAL ADJUSTMENT FUNCTIONS
- 7.1 Function block diagram
- 7.2 Machine resonance suppression filter
- 7.3 Adaptive vibration suppression control
- 7.4 Low-pass filter
- 7.5 Gain changing function
  - 7.5.1 Applications
  - 7.5.2 Function block diagram
  - 7.5.3 Parameters
  - 7.5.4 Gain changing operation
8. INSPECTION
9. TROUBLESHOOTING
- 9.1 Trouble at start-up
- 9.2 Alarms and warning list
- 9.3 Remedies for alarms
- 9.4 Remedies for warnings
10. OUTLINE DRAWINGS
- 10.1 MELSERVO-J2M configuration example
- 10.2 Unit outline drawings
  - 10.2.1 Base unit (MR-J2M-BU[ ] )
  - 10.2.2 Interface unit (MR-J2M-P8A)
  - 10.2.3 Drive unit (MR-J2M-[ ] DU)
  - 10.2.4 Extension IO unit (MR-J2M-D01)
  - 10.2.5 Battery unit (MR-J2M-BT)
- 10.3 Connectors
11. CHARACTERISTICS
- 11.1 Overload protection characteristics
- 11.2 Power supply equipment capacity and generated loss
- 11.3 Dynamic brake characteristics
- 11.4 Encoder cable flexing life
12. OPTIONS AND AUXILIARY EQUIPMENT
- 12.1 Options
  - 12.1.1 Regenerative brake options
  - 12.1.2 Cables and connectors
  - 12.1.3 Junction terminal block (MR-TB50)
  - 12.1.4 Junction terminal block (MR-TB20)
  - 12.1.5 Maintenance junction card (MR-J2CN3TM)
  - 12.1.6 MR Configurator (servo configurations software)
- 12.2 Auxiliary equipment
  - 12.2.1 Recommended wires
  - 12.2.2 No-fuse breakers, fuses, magnetic contactors
  - 12.2.3 Power factor improving reactors
  - 12.2.4 Relays
  - 12.2.5 Surge absorbers
  - 12.2.6 Noise reduction techniques
  - 12.2.7 Leakage current breaker
  - 12.2.8 EMC filter
13. COMMUNICATION FUNCTIONS
- 13.1 Configuration
  - 13.1.1 RS-422 configuration
  - 13.1.2 RS-232C configuration
- 13.2 Communication specifications
  - 13.2.1 Communication overview
  - 13.2.2 Parameter setting
- 13.3 Protocol
- 13.4 Character codes
- 13.5 Error codes
- 13.6 Checksum
- 13.7 Time-out operation
- 13.8 Retry operation
- 13.9 Initialization
- 13.10 Communication procedure example
- 13.11 Command and data No. list
  - 13.11.1 Read commands
  - 13.11.2 Write commands
- 13.12 Detailed explanations of commands
  - 13.12.1 Data processing
  - 13.12.2 Status display
  - 13.12.3 Parameter
  - 13.12.4 External I/O pin statuses (DIO diagnosis)
  - 13.12.5 Disable/enable of external I/O signals (DIO)
  - 13.12.6 External input signal ON/OFF (test operation)
  - 13.12.7 Test operation mode
  - 13.12.8 Output signal pin ON/OFF (output signal (DO) forced output)
  - 13.12.9 Alarm history
  - 13.12.10 Current alarm
  - 13.12.11 Other commands
14. ABSOLUTE POSITION DETECTION SYSTEM
- 14.1 Outline
  - 14.1.1 Features
  - 14.1.2 Restrictions
- 14.2 Specifications
- 14.3 Signal explanation
- 14.4 Serial communication command
- 14.5 Startup procedure
- 14.6 Absolute position data transfer protocol
  - 14.6.1 Data transfer procedure
  - 14.6.2 Transfer method
  - 14.6.3 Home position setting
  - 14.6.4 How to process the absolute position data at detection of stroke end
- 14.7 Confirmation of absolute position detection data
APPENDIX
- App 1. Status indication block diagram
REVISIONS

Mitsubishi MR-J2M-BU Instruction Manual

Mitsubishi MR-J2M-BU Servo Amplifier manual cover

Pages 272

Year 2005

Language(s)

of 272

Mitsubishi MR-J2M-BU Servo Amplifier Specification

The Mitsubishi MR-J2M-BU Servo Amplifier is a highly reliable and efficient device designed to enhance precision in motion control applications. It is part of the MR-J2M series, known for its compact design, ease of integration, and advanced functionality. This servo amplifier is compatible with a range of motors, offering flexibility across various industrial settings. It operates with a power supply of 3-phase or single-phase AC ranging from 200 to 230 volts, supporting a wide array of power requirements. The amplifier is equipped with advanced control features, including real-time auto-tuning and adaptive control, which ensure optimal performance and high precision in speed, position, and torque control.

The MR-J2M-BU model integrates a high-resolution encoder feedback system, delivering exceptional accuracy and repeatability. It offers multiple communication interfaces, including RS-232C and RS-422, facilitating seamless integration into existing systems and supporting various network protocols. The amplifier incorporates safety features such as overcurrent, overvoltage, and overheating protection, enhancing the operational reliability and longevity of the device. It also supports multiple control modes, including speed, position, and torque control, allowing for versatile application across different industries.

The Mitsubishi MR-J2M-BU Servo Amplifier is designed to be user-friendly, featuring easily accessible connections and a straightforward setup process. It is equipped with diagnostic and monitoring capabilities, providing real-time feedback and fault detection to minimize downtime. This servo amplifier is suitable for applications that require high precision and reliability, such as robotics, CNC machines, and other automated systems. Its robust design and advanced features make it an ideal choice for enhancing motion control solutions in today's demanding industrial environments.

Mitsubishi MR-J2M-BU Servo Amplifier F.A.Q.

How can I reset the Mitsubishi MR-J2M-BU Servo Amplifier to factory settings?

To reset the MR-J2M-BU Servo Amplifier to factory settings, turn off the power supply, then press and hold the 'Mode' and 'Set' buttons simultaneously while turning the power back on. Hold the buttons until the display shows 'Init'.

What are the common alarm codes for the MR-J2M-BU and how can they be resolved?

Common alarm codes include AL.11 (Overcurrent) which can often be resolved by checking for short circuits and ensuring proper wiring. AL.16 (Overload) may be addressed by reducing the load or checking motor operation. Consult the manual for a full list of alarms and solutions.

How do I perform regular maintenance on the MR-J2M-BU Servo Amplifier?

Regular maintenance includes checking for dust accumulation, ensuring all connections are tight, inspecting cables for wear and tear, and verifying that the cooling fan is operational. It is also recommended to periodically update the firmware.

What steps should be taken to troubleshoot when the servo motor does not start?

First, verify power supply and connections. Check for any alarm codes on the display. Ensure that the servo motor parameters are correctly set and that the motor is not mechanically jammed. Consult the manual for specific troubleshooting steps.

How do I connect the MR-J2M-BU Servo Amplifier to a PLC?

Connect the servo amplifier to the PLC using the compatible communication protocol such as RS-422 or RS-485. Configure the communication settings in both the PLC and the servo amplifier to ensure proper data exchange.

What is the recommended environment for installing the MR-J2M-BU Servo Amplifier?

The amplifier should be installed in a clean, dry environment with an ambient temperature between 0 to 55°C. Ensure there is adequate ventilation and avoid locations with vibrations or direct sunlight.

Can I use the MR-J2M-BU Servo Amplifier with a different brand of servo motor?

While it is recommended to use Mitsubishi servo motors for optimal performance, it is possible to use motors from other brands by ensuring compatibility with the amplifier's specifications and properly configuring the motor parameters.

What are the key parameters to set up during initial installation?

During initial setup, key parameters include motor type, encoder settings, acceleration and deceleration times, and torque limits. Refer to the installation manual for detailed instructions on setting these parameters.

How can I update the firmware on the MR-J2M-BU Servo Amplifier?

To update the firmware, connect the amplifier to a PC using the appropriate communication cable. Use the Mitsubishi firmware update tool to upload the new firmware file to the amplifier. Follow the on-screen instructions to complete the update.

What should I do if the MR-J2M-BU Servo Amplifier overheats?

If the amplifier overheats, check the ambient temperature and ensure adequate ventilation. Clean any dust from the cooling fans and heatsinks. If overheating persists, review the load conditions and reduce the duty cycle if necessary.