Mitsubishi Electric MR-J2S-40B User Manual

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General-Purpose AC Servo

MODEL

MR-J2S- B

SERVO AMPLIFIER

INSTRUCTION MANUAL

SSCNET Compatible

J2-Super Series

F

Table of Contents

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Transition Handbook662 pages

Questions and Answers:

G
Garrett BuckleyAug 25, 2025
What causes overload 2 in Mitsubishi Electric Amplifier and how to fix it?
- A
  Anthony MuellerAug 25, 2025
  To troubleshoot an overload (Overload 2) in your Mitsubishi Electric Amplifier: * Review the operation pattern and install limit switches if the machine struck something. * Ensure correct connection of the servo motor, matching the servo amplifier's output terminals U, V, W to the servo motor's input terminals U, V, W. * If the servo system is unstable and hunting, repeat acceleration/deceleration to execute auto-tuning, change the auto-tuning response setting, or set auto-tuning to OFF and make gain adjustment manually. * If the encoder is faulty (when the servo motor shaft is rotated with the servo off, the cumulative feedback pulses do not vary in proportion to the rotary angle of the shaft but the indication skips or returns midway), replace the servo motor.
S
Steven WattsAug 25, 2025
How to troubleshoot main circuit error on Mitsubishi Electric Amplifier?
- S
  Susan MilesAug 26, 2025
  To resolve a main circuit error in your Mitsubishi Electric Amplifier: * Ensure that the power input wires and servo motor output wires are correctly connected at the main circuit terminal block (TE1). * Change the cable if the sheathes of servo motor power cables deteriorated, resulting in a ground fault. * Replace the servo amplifier if the main circuit of the servo amplifier failed. Alarm (24) occurs if the servo is switched on after disconnecting the U, V, W power cables from the servo amplifier.
M
mauriceandersonAug 27, 2025
What causes encoder error 1 on Mitsubishi Electric MR-J2S-40B Amplifier?
- J
  jill32Aug 27, 2025
  To resolve an encoder error 1 on your Mitsubishi Electric Amplifier: * Connect the encoder connector (CN2) correctly if it is disconnected. * Change the servo motor if the encoder is faulty. * Repair or change the cable if the encoder cable is faulty due to wire breakage or shorting.
A
Alexander WagnerAug 27, 2025
How to fix encoder error 2 in Mitsubishi Electric MR-J2S-40B Amplifier?
- L
  leblanccassandraAug 27, 2025
  To resolve an encoder error 2 on your Mitsubishi Electric Amplifier: * Connect the encoder connector (CN2) correctly if it is disconnected. * Change the servo motor if the encoder is faulty. * Repair or change the cable if the encoder cable is faulty due to wire breakage or shorting.
K
Katelyn PrinceAug 28, 2025
What does board error mean on Mitsubishi Electric Amplifier?
- B
  Brandon PerryAug 28, 2025
  To troubleshoot a board error on your Mitsubishi Electric Amplifier: * Change the servo amplifier if there are faulty parts in the servo amplifier. Alarm (17) occurs if power is switched on after disconnection of all cable but the control circuit power supply cable. * Correctly connect the output terminals U, V, W of the servo amplifier and the input terminals U, V, W of the servo motor if they are not connected.
J
Jay LeeAug 30, 2025
How to solve parameter error on Mitsubishi Electric MR-J2S-40B Amplifier?
- V
  veronica12Aug 30, 2025
  To address a parameter error in your Mitsubishi Electric Amplifier: * Change the servo amplifier if a servo amplifier fault caused the parameter setting to be rewritten. * Change the parameter value to within the setting range if there is a parameter whose value was set outside the setting range by the controller. * Change the servo amplifier if the number of write times to EEP- ROM exceeded 100,000 due to parameter write, etc.
C
Carl PetersAug 31, 2025
What to do if Mitsubishi Electric Amplifier shows motor combination error?
- D
  Daniel CunninghamAug 31, 2025
  To resolve a motor combination error with your Mitsubishi Electric Amplifier, use the correct combination of servo amplifier and servo motor.
R
rlambSep 1, 2025
How to troubleshoot serial communication error on Mitsubishi Electric Amplifier?
- T
  Thomas GuzmanSep 1, 2025
  To address a serial communication error on your Mitsubishi Electric Amplifier: * Repair or change the cable if there is a communication cable fault (open cable or short circuit). * Change the communication device (e.g., personal computer) if it is faulty.
W
William GoodwinSep 2, 2025
What does command frequency error mean for Mitsubishi Electric Amplifier?
- K
  Kimberly HerringSep 2, 2025
  To address a command frequency error with your Mitsubishi Electric Amplifier: * Review the operation program if the command given is greater than the maximum speed of the servo motor. * Take action against noise if noise entered the bus cable. * Change the servo system controller if it has failed.
T
Tracy WalkerSep 3, 2025
How to solve transfer error in Mitsubishi Electric MR-J2S-40B?
- J
  Jill GonzalezSep 4, 2025
  To resolve a transfer error on your Mitsubishi Electric Amplifier: * Connect the connector of the bus cable if the bus cable is disconnected. * Change the cable if the bus cable is faulty. * Change the servo amplifier if the printed board is faulty. * Connect the termination connector if it is disconnected.

Mitsubishi Electric MR-J2S-40B Specifications

General

Type	Servo Amplifier
Model	MR-J2S-40B
Series	MR-J2S
Rated Output	0.4 kW
Input	3-phase
Communication	RS-422/485
Control Mode	Position
Feedback	Absolute encoder
Protection	Overvoltage, Overcurrent
Input Voltage	3-phase 200 to 230 VAC, 50/60 Hz

Summary

Safety Instructions

WARNING

Indicates hazardous conditions resulting in death or severe injury.

CAUTION

Indicates hazardous conditions resulting in medium or slight injury or physical damage.

Diagrammatic Symbols

1. To Prevent Electric Shock

2. To Prevent Fire

Precautions to prevent fire hazards.

3. To Prevent Injury

Precautions to prevent personal injury.

Additional Instructions

(1) Transportation and Installation

Guidelines for safely transporting and installing the equipment.

(2) Wiring

Precautions and instructions for correct and secure wiring.

(3) Test Run Adjustment

Precautions for checking parameter settings before test runs.

(4) Usage

Important usage guidelines and precautions for safe operation.

(5) Corrective Actions

Actions to take in case of hazardous conditions or product faults.

FOR MAXIMUM SAFETY

1. FUNCTIONS AND CONFIGURATION

1.3 Servo Amplifier Standard Specifications

Standard technical specifications of the servo amplifier.

2. INSTALLATION

3. SIGNALS AND WIRING

3.1 Connection Example of Control Signal System

Example diagrams for connecting control signal systems.

3.2 I/O Signals

Details of the input/output signals.

3.3 Alarm Occurrence Timing Chart

Timing charts illustrating alarm occurrences.

3.5 Power Line Circuit

Diagrams of the power line circuits.

3.6 Connection of Servo Amplifier and Servo Motor

Instructions for connecting the servo amplifier and motor.

3.7 Servo Motor with Electromagnetic Brake

Instructions for servo motors with electromagnetic brakes.

3.8 Grounding

Instructions for proper grounding to prevent electric shock.

4. OPERATION AND DISPLAY

4.1 When Switching Power On for the First Time

Initial power-on procedures and checks.

4.2 Start Up

Steps for starting up the servo system.

4.4 Test Operation Mode

Information on performing test operations.

5. PARAMETERS

5.2 Lists

Lists of parameters and their settings.

6. GENERAL GAIN ADJUSTMENT

6.1 Different Adjustment Methods

Various methods for adjusting servo gains.

6.2 Auto Tuning

Using the auto tuning function for gain adjustment.

6.3 Manual Mode 1 (Simple Manual Adjustment)

Performing simple manual gain adjustments.

7. SPECIAL ADJUSTMENT FUNCTIONS

7.5 Gain Changing Function

8. INSPECTION

(1) Inspection

(2) Life

9. TROUBLESHOOTING

9.1 Alarms and Warning List

List of alarms and warnings with deactivation methods.

9.2 Remedies for Alarms

Solutions for resolving specific alarms.

9.3 Remedies for Warnings

Solutions for resolving specific warnings.

11. CHARACTERISTICS

11.1 Overload Protection Characteristics

How overload protection functions.

12. OPTIONS AND AUXILIARY EQUIPMENT

12.1 Options

Details on optional components.

12.1.1 Regenerative Brake Options

Information on regenerative brake options.

12.1.8 MR Configurator (Servo Configurations Software)

Details about the MR Configurator software.

12.2 Auxiliary Equipment

12.2.7 Noise Reduction Techniques

12.2.8 Leakage Current Breaker

12.2.9 EMC Filter

13. ABSOLUTE POSITION DETECTION SYSTEM

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