Mitsubishi Electric MR-J4-10A(-RJ) User manual

SH(NA)030107ENG-Q(1710)MEE Printed in Japan Specifications are subject to change without notice.
This Instruction Manual uses recycled paper.
MODEL
MODEL
CODE
General-Purpose AC Servo
MR-J4-_A_(-RJ)/MR-J4-03A6(-RJ) SERVO AMPLIFIER INSTRUCTION MANUAL
HEAD OFFICE: TOKYO BLDG MARUNOUCHI TOKYO 100-8310
MODEL
MR-J4-_A_(-RJ)
MR-J4-03A6(-RJ)
General-Purpose Interface
1CW804
MR-J4-A INSTRUCTIONMANUAL
Q
Q
SERVO AMPLIFIER
INSTRUCTION MANUAL

A - 1
Safety Instructions
Please read the instructions carefully before using the equipment.
To use the equipment correctly, do not attempt to install, operate, maintain, or inspect the equipment until
you have read through this Instruction Manual, Installation guide, and appended documents carefully. Do not
use the equipment until you have a full knowledge of the equipment, safety information and instructions.
In this Instruction Manual, the safety instruction levels are classified into "WARNING" and "CAUTION".
WARNING Indicates that incorrect handling may cause hazardous conditions,
resulting in death or severe injury.
CAUTION Indicates that incorrect handling may cause hazardous conditions,
resulting in medium or slight injury to personnel or may cause physical
damage.
Note that the CAUTION level may lead to a serious consequence according to conditions.
Please follow the instructions of both levels because they are important to personnel safety.
What must not be done and what must be done are indicated by the following diagrammatic symbols.
Indicates what must not be done. For example, "No Fire" is indicated by .
Indicates what must be done. For example, grounding is indicated by .
In this Instruction Manual, instructions at a lower level than the above, instructions for other functions, and so
on are classified into "POINT".
After reading this Instruction Manual, keep it accessible to the operator.

A - 2
1. To prevent electric shock, note the following
WARNING
Before wiring and inspections, turn off the power and wait for 15 minutes or more until the charge lamp
turns off. Then, confirm that the voltage between P+ and N- is safe with a voltage tester and others.
Otherwise, an electric shock may occur. In addition, when confirming whether the charge lamp is off or
not, always confirm it from the front of the servo amplifier.
Ground the servo amplifier and servo motor securely.
Any person who is involved in wiring and inspection should be fully competent to do the work.
Do not attempt to wire the servo amplifier and servo motor until they have been installed. Otherwise, it
may cause an electric shock.
Do not operate switches with wet hands. Otherwise, it may cause an electric shock.
The cables should not be damaged, stressed, loaded, or pinched. Otherwise, it may cause an electric
shock.
During power-on or operation, do not open the front cover of the servo amplifier. Otherwise, it may cause
an electric shock.
Do not operate the servo amplifier with the front cover removed. High-voltage terminals and charging
area are exposed and you may get an electric shock.
Except for wiring and periodic inspection, do not remove the front cover of the servo amplifier even if the
power is off. The servo amplifier is charged and you may get an electric shock.
To prevent an electric shock, always connect the protective earth (PE) terminal (marked ) of the servo
amplifier to the protective earth (PE) of the cabinet.
To avoid an electric shock, insulate the connections of the power supply terminals.
2. To prevent fire, note the following
CAUTION
Install the servo amplifier, servo motor, and regenerative resistor on incombustible material. Installing
them directly or close to combustibles will lead to smoke or a fire.
Always connect a magnetic contactor between the power supply and the main circuit power supply
(L1/L2/L3) of the servo amplifier, in order to configure a circuit that shuts down the power supply on the
side of the servo amplifier’s power supply. If a magnetic contactor is not connected, continuous flow of a
large current may cause smoke or a fire when the servo amplifier malfunctions.
Not doing so may cause a fire when a regenerative transistor malfunctions or the like may overheat the
regenerative resistor.
Always connect a molded-case circuit breaker, or a fuse to each servo amplifier between the power
supply and the main circuit power supply (L1/L2/L3) of the servo amplifier, in order to configure a circuit
that shuts down the power supply on the side of the servo amplifier’s power supply. If a molded-case
circuit breaker or fuse is not connected, continuous flow of a large current may cause smoke or a fire
when the servo amplifier malfunctions.
When using the regenerative resistor, switch power off with the alarm signal.
Provide adequate protection to prevent screws and other conductive matter, oil and other combustible
matter from entering the servo amplifier and servo motor.

A - 3
3. To prevent injury, note the following
CAUTION
Only the power/signal specified in the Instruction Manual should be applied to each terminal. Otherwise,
it may cause an electric shock, fire, injury, etc.
Connect cables to the correct terminals. Otherwise, a burst, damage, etc., may occur.
Ensure that polarity (+/-) is correct. Otherwise, a burst, damage, etc., may occur.
The servo amplifier heat sink, regenerative resistor, servo motor, etc., may be hot while the power is on
and for some time after power-off. Take safety measures such as providing covers to avoid accidentally
touching them by hands and parts such as cables.
4. Additional instructions
The following instructions should also be fully noted. Incorrect handling may cause a malfunction, injury,
electric shock, fire, etc.
(1) Transportation and installation
CAUTION
Transport the products correctly according to their mass.
Stacking in excess of the specified number of product packages is not allowed.
Do not hold the front cover, cables, or connectors when carrying the servo amplifier. Otherwise, it may
drop.
Install the servo amplifier and the servo motor in a load-bearing place in accordance with the Instruction
Manual.
Do not get on or put heavy load on the equipment. Otherwise, it may cause injury.
The equipment must be installed in the specified direction.
Maintain specified clearances between the servo amplifier and the inner surfaces of a control cabinet or
other equipment.
Do not install or operate the servo amplifier and servo motor which have been damaged or have any
parts missing.
Do not block the intake and exhaust areas of the servo amplifier. Otherwise, it may cause a malfunction.
Do not drop or apply heavy impact on the servo amplifiers and the servo motors. Otherwise, it may cause
injury, malfunction, etc.
Do not strike the connector. Otherwise, it may cause a connection failure, malfunction, etc.
When you keep or use the equipment, please fulfill the following environment.
Item Environment
Ambient
temperature
Operation 0 °C to 55 °C (non-freezing)
Storage -20 °C to 65 °C (non-freezing)
Ambient
humidity
Operation 5 %RH to 90 %RH (non-condensing)
Storage
Ambience Indoors (no direct sunlight), free from corrosive gas, flammable gas, oil mist, dust, and dirt
Altitude 2000 m or less above sea level (Contact your local sales office for the altitude for options.)
Vibration resistance 5.9 m/s2, at 10 Hz to 55 Hz (X, Y, Z axes)
When the product has been stored for an extended period of time, contact your local sales office.
When handling the servo motor, be careful with the sharp edges of the servo motor.
The servo amplifier must be installed in a metal cabinet.

A - 4
CAUTION
When fumigants that contain halogen materials, such as fluorine, chlorine, bromine, and iodine, are used
for disinfecting and protecting wooden packaging from insects, they cause a malfunction when entering
our products. Please take necessary precautions to ensure that remaining materials from fumigant do not
enter our products, or treat packaging with methods other than fumigation, such as heat treatment.
Additionally, disinfect and protect wood from insects before packing the products.
To prevent a fire or injury in case of an earthquake or other natural disasters, securely install, mount, and
wire the servo motor in accordance with the Instruction Manual.
(2) Wiring
CAUTION
Wire the equipment correctly and securely. Otherwise, the servo motor may operate unexpectedly.
Make sure to connect the cables and connectors by using the fixing screws and the locking mechanism.
Otherwise, the cables and connectors may be disconnected during operation.
Do not install a power capacitor, surge killer, or radio noise filter (optional FR-BIF(-H)) on the servo
amplifier output side.
To avoid a malfunction, connect the wires to the correct phase terminals (U/V/W) of the servo amplifier
and servo motor.
Connect the servo amplifier power output (U/V/W) to the servo motor power input (U/V/W) directly. Do
not connect a magnetic contactor and others between them. Otherwise, it may cause a malfunction.
U
Servo motor
M
V
W
U
V
W
U
M
V
W
U
V
W
Servo amplifier Servo motorServo amplifier
The connection diagrams in this Instruction Manual are shown for sink interfaces, unless stated
otherwise.
The surge absorbing diode installed to the DC relay for control output should be fitted in the specified
direction. Otherwise, the converter unit and the drive unit will malfunction and will not output signals,
disabling the emergency stop and other protective circuits.
DOCOM
(DOCOMD)
Control output
signal
Servo amplifie
r
or MR-D01
RA
For sink output interface
24 V DC
DOCOM
(DOCOMD)
Control output
signal
24 V DC
Servo amplifier
or MR-D01
RA
For source output interface
When the wires are not tightened enough to the terminal block, the wires or terminal block may generate
heat because of the poor contact. Be sure to tighten the wires with specified torque.
Connecting a servo motor of the wrong axis to U, V, W, or CN2 of the servo amplifier may cause a
malfunction.
Configure a circuit to turn off EM2 or EM1 when the main circuit power supply is turned off to prevent an
unexpected restart of the servo amplifier.
To prevent malfunction, avoid bundling power lines (input/output) and signal cables together or running
them in parallel to each other. Separate the power lines from the signal cables.

A - 5
(3) Test run and adjustment
CAUTION
When executing a test run, follow the notice and procedures in this instruction manual. Otherwise, it may
cause a malfunction, damage to the machine, or injury.
Before operation, check and adjust the parameter settings. Improper settings may cause some machines
to operate unexpectedly.
Never make a drastic adjustment or change to the parameter values as doing so will make the operation
unstable.
Do not get close to moving parts during the servo-on status.
(4) Usage
CAUTION
Provide an external emergency stop circuit to stop the operation and shut the power off immediately.
For equipment in which the moving part of the machine may collide against the load side, install a limit
switch or stopper to the end of the moving part. The machine may be damaged due to a collision.
Do not disassemble, repair, or modify the product. Otherwise, it may cause an electric shock, fire, injury,
etc. Disassembled, repaired, and/or modified products are not covered under warranty.
Before resetting an alarm, make sure that the run signal of the servo amplifier is off in order to prevent a
sudden restart. Otherwise, it may cause an accident.
Use a noise filter, etc., to minimize the influence of electromagnetic interference. Electromagnetic
interference may affect the electronic equipment used near the servo amplifier.
Do not burn or destroy the servo amplifier. Doing so may generate a toxic gas.
Use the servo amplifier with the specified servo motor.
Wire options and peripheral equipment, etc. correctly in the specified combination. Otherwise, it may
cause an electric shock, fire, injury, etc.
The electromagnetic brake on the servo motor is designed to hold the motor shaft and should not be
used for ordinary braking.
For such reasons as incorrect wiring, service life, and mechanical structure (e.g. where a ball screw and
the servo motor are coupled via a timing belt), the electromagnetic brake may not hold the motor shaft.
To ensure safety, install a stopper on the machine side.
If the dynamic brake is activated at power-off, alarm occurrence, etc., do not rotate the servo motor by an
external force. Otherwise, it may cause a fire.

A - 6
(5) Corrective actions
CAUTION
Ensure safety by confirming the power off, etc. before performing corrective actions. Otherwise, it may
cause an accident.
If it is assumed that a power failure, machine stoppage, or product malfunction may result in a hazardous
situation, use a servo motor with an electromagnetic brake or provide an external brake system for
holding purpose to prevent such hazard.
Configure an electromagnetic brake circuit which is interlocked with an external emergency stop switch.
Servo motor
Electromagnetic brake
B
RA
Contacts must be opened with
the emergency stop switch.
Contacts must be opened when ALM
(Malfunction) or MBR (Electromagnetic
brake interlock) turns off.
24 V DC
When an alarm occurs, eliminate its cause, ensure safety, and deactivate the alarm to restart operation.
If the molded-case circuit breaker or fuse is activated, be sure to remove the cause and secure safety
before switching the power on. If necessary, replace the servo amplifier and recheck the wiring.
Otherwise, it may cause smoke, fire, or an electric shock.
Provide an adequate protection to prevent unexpected restart after an instantaneous power failure.
After an earthquake or other natural disasters, ensure safety by checking the conditions of the
installation, mounting, wiring, and equipment before switching the power on to prevent an electric shock,
injury, or fire.
(6) Maintenance, inspection and parts replacement
CAUTION
Make sure that the emergency stop circuit operates properly such that an operation can be stopped
immediately and a power is shut off by the emergency stop switch.
It is recommended that the servo amplifier be replaced every 10 years when it is used in general
environment.
When using the servo amplifier that has not been energized for an extended period of time, contact your
local sales office.
(7) General instruction
To illustrate details, the equipment in the diagrams of this Instruction Manual may have been drawn
without covers and safety guards. When the equipment is operated, the covers and safety guards must
be installed as specified. Operation must be performed in accordance with this Instruction Manual.

A - 7
DISPOSAL OF WASTE
Please dispose a servo amplifier, battery (primary battery) and other options according to your local laws and
regulations.
EEP-ROM life
The number of write times to the EEP-ROM, which stores parameter settings, etc., is limited to 100,000. If
the total number of the following operations exceeds 100,000, the servo amplifier may malfunction when the
EEP-ROM reaches the end of its useful life.
Write to the EEP-ROM due to parameter setting changes
Write to the EEP-ROM due to device changes
Home position setting in the absolute position detection system
STO function of the servo amplifier
The servo amplifier complies with safety integrity level 3 (SIL 3) of the IEC 61508:2010 functional safety
standard.
Refer to app. 12 for schedule.
When using the STO function of the servo amplifier, refer to chapter 13.
For the MR-J3-D05 safety logic unit, refer to app. 5.
Compliance with global standards
For the compliance with global standards, refer to app. 4.

A - 8
«About the manuals»
You must have this Instruction Manual and the following manuals to use this servo. Ensure to prepare
them to use the servo safely.
When using the MR-J4-03A6(-RJ), refer to chapter 18.
Relevant manuals
Manual name Manual No.
MELSERVO MR-J4-_A_-RJ Servo Amplifier Instruction Manual (Positioning Mode) (Note 5) SH(NA)030143ENG
MELSERVO MR-J4-_A_-RJ Servo Amplifier Instruction Manual (Modbus RTU Protocol)
(Note 7)
SH(NA)030175ENG
MELSERVO MR-J4-DU_(-RJ)/MR-CR55K_ Instruction Manual (Note 6) SH(NA)030153ENG
MELSERVO MR-J4 Servo Amplifier Instruction Manual (Troubleshooting) SH(NA)030109ENG
MELSERVO Servo Motor Instruction Manual (Vol. 3) (Note 1) SH(NA)030113ENG
MELSERVO Linear Servo Motor Instruction Manual (Note 2) SH(NA)030110ENG
MELSERVO Direct Drive Motor Instruction Manual (Note 3) SH(NA)030112ENG
MELSERVO Linear Encoder Instruction Manual (Note 2, 4) SH(NA)030111ENG
MELSERVO EMC Installation Guidelines IB(NA)67310ENG
MELSERVO Parameter Unit MR-PRU03 Instruction Manual (MR-J4) SH(NA)030186ENG
MELSERVO MR-D30 Instruction Manual (Note 8) SH(NA)030132ENG
Note 1. It is necessary for using a rotary servo motor.
2. It is necessary for using a linear servo motor.
3. It is necessary for using a direct drive motor.
4. It is necessary for using a fully closed loop system.
5. It is necessary for using an MR-J4-_A_-RJ servo amplifier in the positioning mode.
6. It is necessary for using an MR-CV_ power regeneration converter unit, MR-CR_ resistance regeneration
converter unit, and MR-J4-DU_A_(-RJ) drive unit.
7. It is necessary for using the Modbus RTU communication function.
8. It is necessary for using an MR-D30 functional safety unit.
«Wiring»
Wires mentioned in this Instruction Manual are selected based on the ambient temperature of 40 °C.
«U.S. customary units»
U.S. customary units are not shown in this manual. Convert the values if necessary according to the
following table.
Quantity SI (metric) unit U.S. customary unit
Mass 1 [kg] 2.2046 [lb]
Length 1 [mm] 0.03937 [inch]
Torque 1 [N•m] 141.6 [oz•inch]
Moment of inertia 1 [(× 10-4 kg•m2)] 5.4675 [oz•inch2]
Load (thrust load/axial load) 1 [N] 0.2248 [lbf]
Temperature N [°C] × 9/5 + 32 N [°F]

1
CONTENTS
1. FUNCTIONS AND CONFIGURATION 1- 1 to 1-56
1.1 Summary........................................................................................................................................... 1- 1
1.2 Function block diagram..................................................................................................................... 1- 3
1.3 Servo amplifier standard specifications ........................................................................................... 1-11
1.4 Combinations of servo amplifiers and servo motors ....................................................................... 1-18
1.5 Function list...................................................................................................................................... 1-21
1.6 Model designation............................................................................................................................ 1-24
1.7 Structure .......................................................................................................................................... 1-25
1.7.1 Parts identification..................................................................................................................... 1-25
1.7.2 Removal and reinstallation of the front cover............................................................................ 1-40
1.8 Configuration including peripheral equipment ................................................................................. 1-42
2. INSTALLATION 2- 1 to 2- 8
2.1 Installation direction and clearances ................................................................................................ 2- 2
2.2 Keeping out of foreign materials....................................................................................................... 2- 4
2.3 Encoder cable stress ........................................................................................................................ 2- 4
2.4 Inspection items................................................................................................................................ 2- 5
2.5 Parts having service life.................................................................................................................... 2- 6
2.6 Restrictions when using this product at altitude exceeding 1000 m and up to 2000 m
above sea level................................................................................................................................. 2- 7
3. SIGNALS AND WIRING 3- 1 to 3-76
3.1 Input power supply circuit ................................................................................................................. 3- 2
3.1.1 200 V class................................................................................................................................. 3- 3
3.1.2 400 V class................................................................................................................................. 3- 8
3.1.3 100 V class................................................................................................................................ 3-11
3.2 I/O signal connection example......................................................................................................... 3-12
3.2.1 Position control mode................................................................................................................ 3-12
3.2.2 Speed control mode .................................................................................................................. 3-15
3.2.3 Torque control mode ................................................................................................................. 3-18
3.3 Explanation of power supply system ............................................................................................... 3-21
3.3.1 Signal explanations ................................................................................................................... 3-21
3.3.2 Power-on sequence .................................................................................................................. 3-22
3.3.3 Wiring CNP1, CNP2, and CNP3 ............................................................................................... 3-23
3.4 Connectors and pin assignment ...................................................................................................... 3-27
3.5 Signal (device) explanations............................................................................................................ 3-30
3.6 Detailed explanation of signals........................................................................................................ 3-40
3.6.1 Position control mode................................................................................................................ 3-40
3.6.2 Speed control mode .................................................................................................................. 3-45
3.6.3 Torque control mode ................................................................................................................. 3-47
3.6.4 Position/speed control switching mode..................................................................................... 3-50
3.6.5 Speed/torque control switching mode....................................................................................... 3-52
3.6.6 Torque/position control switching mode.................................................................................... 3-54
3.7 Forced stop deceleration function ................................................................................................... 3-55
3.7.1 Forced stop deceleration function............................................................................................. 3-55
3.7.2 Base circuit shut-off delay time function ................................................................................... 3-57

2
3.7.3 Vertical axis freefall prevention function ................................................................................... 3-58
3.7.4 Residual risks of the forced stop function (EM2) ...................................................................... 3-58
3.8 Alarm occurrence timing chart......................................................................................................... 3-59
3.8.1 When you use the forced stop deceleration function................................................................ 3-59
3.8.2 When you do not use the forced stop deceleration function..................................................... 3-60
3.9 Interfaces ......................................................................................................................................... 3-61
3.9.1 Internal connection diagram...................................................................................................... 3-61
3.9.2 Detailed explanation of interfaces............................................................................................. 3-63
3.9.3 Source I/O interfaces ................................................................................................................ 3-67
3.10 Servo motor with an electromagnetic brake .................................................................................. 3-69
3.10.1 Safety precautions .................................................................................................................. 3-69
3.10.2 Timing chart ............................................................................................................................ 3-71
3.11 Grounding ...................................................................................................................................... 3-75
4. STARTUP 4- 1 to 4-44
4.1 Switching power on for the first time................................................................................................. 4- 2
4.1.1 Startup procedure ...................................................................................................................... 4- 2
4.1.2 Wiring check............................................................................................................................... 4- 3
4.1.3 Surrounding environment........................................................................................................... 4- 6
4.2 Startup in position control mode ....................................................................................................... 4- 6
4.2.1 Power on and off procedures..................................................................................................... 4- 6
4.2.2 Stop ............................................................................................................................................ 4- 7
4.2.3 Test operation ............................................................................................................................ 4- 8
4.2.4 Parameter setting....................................................................................................................... 4- 9
4.2.5 Actual operation ......................................................................................................................... 4- 9
4.2.6 Trouble at start-up...................................................................................................................... 4- 9
4.3 Startup in speed control mode......................................................................................................... 4-12
4.3.1 Power on and off procedures.................................................................................................... 4-12
4.3.2 Stop ........................................................................................................................................... 4-13
4.3.3 Test operation ........................................................................................................................... 4-14
4.3.4 Parameter setting...................................................................................................................... 4-15
4.3.5 Actual operation ........................................................................................................................ 4-15
4.3.6 Trouble at start-up..................................................................................................................... 4-15
4.4 Startup in torque control mode ........................................................................................................ 4-17
4.4.1 Power on and off procedures.................................................................................................... 4-17
4.4.2 Stop ........................................................................................................................................... 4-17
4.4.3 Test operation ........................................................................................................................... 4-18
4.4.4 Parameter setting...................................................................................................................... 4-19
4.4.5 Actual operation ........................................................................................................................ 4-19
4.4.6 Trouble at start-up..................................................................................................................... 4-20
4.5 Display and operation sections........................................................................................................ 4-21
4.5.1 Summary................................................................................................................................... 4-21
4.5.2 Display flowchart ....................................................................................................................... 4-22
4.5.3 Status display mode.................................................................................................................. 4-23
4.5.4 Diagnostic mode ....................................................................................................................... 4-30
4.5.5 Alarm mode............................................................................................................................... 4-32
4.5.6 Parameter mode ....................................................................................................................... 4-33
4.5.7 External I/O signal display......................................................................................................... 4-35
4.5.8 Output signal (DO) forced output .............................................................................................. 4-38
4.5.9 Test operation mode ................................................................................................................. 4-39

3
5. PARAMETERS 5- 1 to 5-76
5.1 Parameter list.................................................................................................................................... 5- 2
5.1.1 Basic setting parameters ([Pr. PA_ _ ])...................................................................................... 5- 2
5.1.2 Gain/filter setting parameters ([Pr. PB_ _ ]) ............................................................................... 5- 3
5.1.3 Extension setting parameters ([Pr. PC_ _ ]) .............................................................................. 5- 5
5.1.4 I/O setting parameters ([Pr. PD_ _ ]) ......................................................................................... 5- 7
5.1.5 Extension setting 2 parameters ([Pr. PE_ _ ])............................................................................ 5- 8
5.1.6 Extension setting 3 parameters ([Pr. PF_ _ ])........................................................................... 5-10
5.1.7 Linear servo motor/DD motor setting parameters ([Pr. PL_ _ ]) ............................................... 5-11
5.1.8 Option setting parameters ([Pr. Po_ _ ]) ................................................................................... 5-12
5.2 Detailed list of parameters ............................................................................................................... 5-13
5.2.1 Basic setting parameters ([Pr. PA_ _ ])..................................................................................... 5-13
5.2.2 Gain/filter setting parameters ([Pr. PB_ _ ]) .............................................................................. 5-26
5.2.3 Extension setting parameters ([Pr. PC_ _ ]) ............................................................................. 5-40
5.2.4 I/O setting parameters ([Pr. PD_ _ ]) ........................................................................................ 5-54
5.2.5 Extension setting 2 parameters ([Pr. PE_ _ ])........................................................................... 5-62
5.2.6 Extension setting 3 parameters ([Pr. PF_ _ ])........................................................................... 5-65
5.2.7 Linear servo motor/DD motor setting parameters ([Pr. PL_ _ ]) ............................................... 5-68
5.2.8 Option setting parameters ([Pr. Po_ _ ]) ................................................................................... 5-71
6. NORMAL GAIN ADJUSTMENT 6- 1 to 6-32
6.1 Different adjustment methods........................................................................................................... 6- 1
6.1.1 Adjustment on a single servo amplifier ...................................................................................... 6- 1
6.1.2 Adjustment using MR Configurator2 .......................................................................................... 6- 2
6.2 One-touch tuning .............................................................................................................................. 6- 3
6.2.1 One-touch tuning flowchart ........................................................................................................ 6- 5
6.2.2 Display transition and operation procedure of one-touch tuning ............................................... 6- 8
6.2.3 Caution for one-touch tuning..................................................................................................... 6-22
6.3 Auto tuning....................................................................................................................................... 6-23
6.3.1 Auto tuning mode ...................................................................................................................... 6-23
6.3.2 Auto tuning mode basis............................................................................................................. 6-24
6.3.3 Adjustment procedure by auto tuning ....................................................................................... 6-25
6.3.4 Response level setting in auto tuning mode ............................................................................. 6-26
6.4 Manual mode ................................................................................................................................... 6-27
6.5 2 gain adjustment mode .................................................................................................................. 6-30
7. SPECIAL ADJUSTMENT FUNCTIONS 7- 1 to 7-40
7.1 Filter setting ...................................................................................................................................... 7- 1
7.1.1 Machine resonance suppression filter ....................................................................................... 7- 2
7.1.2 Adaptive filter II........................................................................................................................... 7- 5
7.1.3 Shaft resonance suppression filter............................................................................................. 7- 8
7.1.4 Low-pass filter ............................................................................................................................ 7- 9
7.1.5 Advanced vibration suppression control II ................................................................................. 7- 9
7.1.6 Command notch filter ................................................................................................................ 7-14
7.2 Gain switching function.................................................................................................................... 7-16
7.2.1 Applications............................................................................................................................... 7-16
7.2.2 Function block diagram............................................................................................................. 7-17
7.2.3 Parameter.................................................................................................................................. 7-18

4
7.2.4 Gain switching procedure ......................................................................................................... 7-21
7.3 Tough drive function ........................................................................................................................ 7-25
7.3.1 Vibration tough drive function.................................................................................................... 7-25
7.3.2 Instantaneous power failure tough drive function ..................................................................... 7-27
7.4 Compliance with SEMI-F47 standard .............................................................................................. 7-31
7.5 Model adaptive control disabled ...................................................................................................... 7-34
7.6 Lost motion compensation function ................................................................................................. 7-35
7.7 Super trace control .......................................................................................................................... 7-38
8. TROUBLESHOOTING 8- 1 to 8-14
8.1 Explanation for the lists..................................................................................................................... 8- 1
8.2 Alarm list ........................................................................................................................................... 8- 2
8.3 Warning list ...................................................................................................................................... 8-11
9. DIMENSIONS 9- 1 to 9-22
9.1 Servo amplifier.................................................................................................................................. 9- 1
9.2 Connector ........................................................................................................................................ 9-20
10. CHARACTERISTICS 10- 1 to 10-16
10.1 Overload protection characteristics .............................................................................................. 10- 1
10.2 Power supply capacity and generated loss .................................................................................. 10- 5
10.3 Dynamic brake characteristics...................................................................................................... 10- 8
10.3.1 Dynamic brake operation ....................................................................................................... 10- 9
10.3.2 Permissible load to motor inertia when the dynamic brake is used...................................... 10-12
10.4 Cable bending life ........................................................................................................................ 10-13
10.5 Inrush currents at power-on of main circuit and control circuit.................................................... 10-14
11. OPTIONS AND PERIPHERAL EQUIPMENT 11- 1 to 11-120
11.1 Cable/connector sets.................................................................................................................... 11- 1
11.1.1 Combinations of cable/connector sets................................................................................... 11- 2
11.1.2 MR-D05UDL3M-B STO cable................................................................................................ 11- 6
11.1.3 Battery cable/junction battery cable ....................................................................................... 11- 7
11.2 Regenerative options.................................................................................................................... 11- 8
11.2.1 Combination and regenerative power.................................................................................... 11- 8
11.2.2 Selection of regenerative option ........................................................................................... 11-10
11.2.3 Parameter setting.................................................................................................................. 11-13
11.2.4 Connection of regenerative option........................................................................................ 11-13
11.2.5 Dimensions ........................................................................................................................... 11-18
11.3 FR-BU2-(H) Brake unit ................................................................................................................ 11-22
11.3.1 Selection................................................................................................................................ 11-23
11.3.2 Brake unit parameter setting................................................................................................. 11-23
11.3.3 Connection example ............................................................................................................. 11-24
11.3.4 Dimensions ........................................................................................................................... 11-34
11.4 FR-RC-(H) power regeneration converter ................................................................................... 11-36
11.5 FR-CV-(H) power regeneration common converter .................................................................... 11-42
11.5.1 Model designation................................................................................................................. 11-42
11.5.2 Selection example................................................................................................................. 11-43

5
11.6 Junction terminal block MR-TB50................................................................................................ 11-51
11.7 MR Configurator2 ........................................................................................................................ 11-54
11.7.1 Specifications ........................................................................................................................ 11-54
11.7.2 System configuration............................................................................................................. 11-55
11.7.3 Precautions for using USB communication function............................................................. 11-56
11.8 Battery.......................................................................................................................................... 11-57
11.8.1 Selection of battery ............................................................................................................... 11-57
11.8.2 MR-BAT6V1SET battery....................................................................................................... 11-58
11.8.3 MR-BAT6V1BJ battery for junction battery cable ................................................................. 11-62
11.8.4 MR-BAT6V1SET-A battery ................................................................................................... 11-66
11.8.5 MR-BT6VCASE battery case................................................................................................ 11-70
11.8.6 MR-BAT6V1 battery.............................................................................................................. 11-76
11.9 Selection example of wires .......................................................................................................... 11-77
11.10 Molded-case circuit breakers, fuses, magnetic contactors ....................................................... 11-81
11.11 Power factor improving DC reactors.......................................................................................... 11-84
11.12 Power factor improving AC reactors.......................................................................................... 11-88
11.13 Relays (recommended) ............................................................................................................. 11-91
11.14 Noise reduction techniques ....................................................................................................... 11-92
11.15 Earth-leakage current breaker................................................................................................... 11-99
11.16 EMC filter (recommended) ...................................................................................................... 11-102
11.17 External dynamic brake ........................................................................................................... 11-109
11.18 Panel through attachment (MR-J4ACN15K/MR-J3ACN)........................................................ 11-116
12. ABSOLUTE POSITION DETECTION SYSTEM 12- 1 to 12-30
12.1 Summary....................................................................................................................................... 12- 1
12.1.1 Features ................................................................................................................................. 12- 1
12.1.2 Restrictions ............................................................................................................................ 12- 2
12.1.3 Structure................................................................................................................................. 12- 2
12.1.4 Parameter setting................................................................................................................... 12- 3
12.1.5 Confirmation of absolute position detection data................................................................... 12- 3
12.2 Battery........................................................................................................................................... 12- 4
12.2.1 Using MR-BAT6V1SET battery or MR-BAT6V1SET-A battery ............................................. 12- 4
12.2.2 Using MR-BAT6V1BJ battery for junction battery cable........................................................ 12- 5
12.2.3 Using MR-BT6VCASE battery case....................................................................................... 12- 6
12.3 Standard connection example ...................................................................................................... 12- 7
12.4 Signal explanation ........................................................................................................................ 12- 8
12.5 Startup procedure ......................................................................................................................... 12- 9
12.6 Absolute position data transfer protocol ...................................................................................... 12-10
12.6.1 Data transfer procedure ........................................................................................................ 12-10
12.6.2 Transfer method.................................................................................................................... 12-11
12.6.3 Home position setting............................................................................................................ 12-20
12.6.4 Use of servo motor with an electromagnetic brake............................................................... 12-22
12.6.5 How to process the absolute position data at detection of stroke end ................................. 12-23
12.7 Absolute position data transfer errors.......................................................................................... 12-23
12.8 Communication-based absolute position transfer system........................................................... 12-26
12.8.1 Serial communication command........................................................................................... 12-26
12.8.2 Absolute position data transfer protocol ............................................................................... 12-26

6
13. USING STO FUNCTION 13- 1 to 13-14
13.1 Introduction ................................................................................................................................... 13- 1
13.1.1 Summary................................................................................................................................ 13- 1
13.1.2 Terms related to safety .......................................................................................................... 13- 1
13.1.3 Cautions ................................................................................................................................. 13- 1
13.1.4 Residual risks of the STO function......................................................................................... 13- 2
13.1.5 Specifications ......................................................................................................................... 13- 3
13.1.6 Maintenance........................................................................................................................... 13- 4
13.2 STO I/O signal connector (CN8) and signal layouts..................................................................... 13- 4
13.2.1 Signal layouts......................................................................................................................... 13- 4
13.2.2 Signal (device) explanations .................................................................................................. 13- 5
13.2.3 How to pull out the STO cable ............................................................................................... 13- 5
13.3 Connection example ..................................................................................................................... 13- 6
13.3.1 Connection example for CN8 connector................................................................................ 13- 6
13.3.2 External I/O signal connection example using an MR-J3-D05 safety logic unit .................... 13- 7
13.3.3 External I/O signal connection example using an external safety relay unit ........................ 13-10
13.4 Detailed description of interfaces ................................................................................................ 13-11
13.4.1 Sink I/O interface................................................................................................................... 13-11
13.4.2 Source I/O interface .............................................................................................................. 13-12
14. COMMUNICATION FUNCTION (MITSUBISHI ELECTRIC GENERAL-PURPOSE AC SERVO PROTOCOL) 14- 1 to 14-40
14.1 Structure ....................................................................................................................................... 14- 2
14.1.1 Configuration diagram............................................................................................................ 14- 2
14.1.2 Precautions for using RS-422/RS-232C/USB communication function ................................ 14- 4
14.2 Communication specifications ...................................................................................................... 14- 5
14.2.1 Outline of communication ...................................................................................................... 14- 5
14.2.2 Parameter setting................................................................................................................... 14- 5
14.3 Protocol......................................................................................................................................... 14- 6
14.3.1 Transmission data configuration............................................................................................ 14- 6
14.3.2 Character codes..................................................................................................................... 14- 7
14.3.3 Error codes............................................................................................................................. 14- 8
14.3.4 Checksum .............................................................................................................................. 14- 8
14.3.5 Time-out processing............................................................................................................... 14- 8
14.3.6 Retry processing .................................................................................................................... 14- 9
14.3.7 Initialization ............................................................................................................................ 14- 9
14.3.8 Communication procedure example ..................................................................................... 14-10
14.4 Command and data No. list ......................................................................................................... 14-11
14.4.1 Reading command................................................................................................................ 14-11
14.4.2 Writing commands ................................................................................................................ 14-17
14.5 Detailed explanations of commands............................................................................................ 14-19
14.5.1 Data processing .................................................................................................................... 14-19
14.5.2 Status display mode.............................................................................................................. 14-21
14.5.3 Parameter ............................................................................................................................. 14-22
14.5.4 External I/O signal status (DIO diagnosis)............................................................................ 14-26
14.5.5 Input device on/off................................................................................................................. 14-29
14.5.6 Disabling/enabling I/O devices (DIO).................................................................................... 14-30
14.5.7 Input devices on/off (test operation)...................................................................................... 14-31
14.5.8 Test operation mode ............................................................................................................. 14-32
14.5.9 Output signal pin on/off (output signal (DO) forced output) .................................................. 14-36

7
14.5.10 Alarm history ....................................................................................................................... 14-37
14.5.11 Current alarm ...................................................................................................................... 14-38
14.5.12 Other commands................................................................................................................. 14-39
15. USING A LINEAR SERVO MOTOR 15- 1 to 15-32
15.1 Functions and configuration ......................................................................................................... 15- 1
15.1.1 Summary................................................................................................................................ 15- 1
15.1.2 Configuration including peripheral equipment ....................................................................... 15- 2
15.2 Signals and wiring......................................................................................................................... 15- 6
15.3 Operation and functions................................................................................................................ 15- 7
15.3.1 Startup.................................................................................................................................... 15- 7
15.3.2 Magnetic pole detection ........................................................................................................ 15-11
15.3.3 Home position return............................................................................................................. 15-18
15.3.4 Test operation mode in MR Configurator2............................................................................ 15-23
15.3.5 Function................................................................................................................................. 15-24
15.3.6 Absolute position detection system....................................................................................... 15-27
15.4 Characteristics ............................................................................................................................. 15-28
15.4.1 Overload protection characteristics ...................................................................................... 15-28
15.4.2 Power supply capacity and generated loss .......................................................................... 15-29
15.4.3 Dynamic brake characteristics .............................................................................................. 15-30
15.4.4 Permissible load to motor mass ratio when the dynamic brake is used............................... 15-31
16. USING A DIRECT DRIVE MOTOR 16- 1 to 16-20
16.1 Functions and configuration ......................................................................................................... 16- 1
16.1.1 Summary................................................................................................................................ 16- 1
16.1.2 Configuration including peripheral equipment ....................................................................... 16- 2
16.2 Signals and wiring......................................................................................................................... 16- 3
16.3 Operation and functions................................................................................................................ 16- 4
16.3.1 Startup procedure .................................................................................................................. 16- 5
16.3.2 Magnetic pole detection ......................................................................................................... 16- 6
16.3.3 Function................................................................................................................................. 16-12
16.4 Absolute position detection system ............................................................................................. 16-14
16.5 Characteristics ............................................................................................................................. 16-15
16.5.1 Overload protection characteristics ...................................................................................... 16-15
16.5.2 Power supply capacity and generated loss .......................................................................... 16-17
16.5.3 Dynamic brake characteristics .............................................................................................. 16-18
17. FULLY CLOSED LOOP SYSTEM 17- 1 to 17-24
17.1 Functions and configuration ......................................................................................................... 17- 2
17.1.1 Function block diagram.......................................................................................................... 17- 2
17.1.2 Selecting procedure of control mode ..................................................................................... 17- 3
17.1.3 System configuration.............................................................................................................. 17- 4
17.2 Load-side encoder ........................................................................................................................ 17- 6
17.2.1 Linear encoder ....................................................................................................................... 17- 6
17.2.2 Rotary encoder....................................................................................................................... 17- 6
17.2.3 Configuration diagram of encoder cable................................................................................ 17- 7
17.2.4 MR-J4FCCBL03M branch cable............................................................................................ 17- 9
17.3 Operation and functions............................................................................................................... 17-10

8
17.3.1 Startup................................................................................................................................... 17-10
17.3.2 Home position return............................................................................................................. 17-17
17.3.3 Fully closed loop control error detection functions................................................................ 17-20
17.3.4 Auto tuning function .............................................................................................................. 17-21
17.3.5 Machine analyzer function .................................................................................................... 17-21
17.3.6 Test operation mode ............................................................................................................. 17-21
17.3.7 Absolute position detection system under fully closed loop system..................................... 17-22
17.3.8 About MR Configurator2 ....................................................................................................... 17-23
18. MR-J4-03A6(-RJ) SERVO AMPLIFIER 18- 1 to 18-84
18.1 Functions and configuration ......................................................................................................... 18- 1
18.1.1 Summary................................................................................................................................ 18- 1
18.1.2 Function block diagram.......................................................................................................... 18- 2
18.1 3 Servo amplifier standard specifications ................................................................................. 18- 3
18.1.4 Combinations of servo amplifiers and servo motors.............................................................. 18- 4
18.1.5 Function list ............................................................................................................................ 18- 5
18.1.6 Model definition ...................................................................................................................... 18- 8
18.1.7 Parts identification.................................................................................................................. 18- 9
18.1.8 Configuration including peripheral equipment ...................................................................... 18-10
18.2 Installation.................................................................................................................................... 18-11
18.2.1 Installation direction and clearances..................................................................................... 18-12
18.2.2 Installation by DIN rail ........................................................................................................... 18-14
18.3 Signals and wiring........................................................................................................................ 18-16
18.3.1 Input power supply circuit ..................................................................................................... 18-17
18.3.2 Explanation of power supply system..................................................................................... 18-19
18.3.3 Selection of main circuit power supply/control circuit power supply..................................... 18-22
18.3.4 Power-on sequence .............................................................................................................. 18-22
18.3.5 I/O signal connection example.............................................................................................. 18-23
18.3.6 Connectors and pin assignment ........................................................................................... 18-31
18.3.7 Signal (device) explanations ................................................................................................. 18-34
18.3.8 Alarm occurrence timing chart .............................................................................................. 18-38
18.3.9 Interfaces (Internal connection diagram) .............................................................................. 18-40
18.3.10 Grounding ........................................................................................................................... 18-42
18.4 Startup ......................................................................................................................................... 18-43
18.4.1 Startup procedure ................................................................................................................. 18-44
18.4.2 Troubleshooting when "24 V ERROR" lamp turns on........................................................... 18-45
18.4.3 Wiring check.......................................................................................................................... 18-46
18.4.4 Surrounding environment...................................................................................................... 18-47
18.5 Display and operation sections.................................................................................................... 18-47
18.5.1 Summary............................................................................................................................... 18-47
18.5.2 Display flowchart ................................................................................................................... 18-48
18.5.3 Status display mode.............................................................................................................. 18-49
18.5.4 One-touch tuning................................................................................................................... 18-54
18.5.5 Diagnostic mode ................................................................................................................... 18-58
18.5.6 Alarm mode........................................................................................................................... 18-61
18.5.7 Parameter mode ................................................................................................................... 18-63
18.5.8 External I/O signal display..................................................................................................... 18-68
18.5.9 Output signal (DO) forced output .......................................................................................... 18-71
18.5.10 Test operation mode ........................................................................................................... 18-72
18.6 Dimensions .................................................................................................................................. 18-74

9
18.7 Characteristics ............................................................................................................................. 18-75
18.7.1 Overload protection characteristics ...................................................................................... 18-75
18.7.2 Power supply capacity and generated loss .......................................................................... 18-76
18.7.3 Dynamic brake characteristics .............................................................................................. 18-76
18.7.4 Inrush currents at power-on of main circuit and control circuit ............................................. 18-78
18.8 Options and peripheral equipment .............................................................................................. 18-79
18.8.1 Cable/connector sets ............................................................................................................ 18-79
18.8.2 Combinations of cable/connector sets.................................................................................. 18-80
18.8.3 Selection example of wires ................................................................................................... 18-81
18.8.4 Circuit protector..................................................................................................................... 18-81
18.9 Communication function (Mitsubishi Electric general-purpose AC servo protocol) .................... 18-82
19. MR-D01 EXTENSION I/O UNIT 19- 1 to 19-48
19.1 Function block diagram................................................................................................................. 19- 2
19.2 Structure ....................................................................................................................................... 19- 4
19.2.1 Parts identification.................................................................................................................. 19- 4
19.2.2 Installation and removal of the MR-D01 extension I/O unit ................................................... 19- 5
19.3 Configuration including peripheral equipment .............................................................................. 19- 9
19.4 Installation direction and clearances ........................................................................................... 19-11
19.5 Signals and wiring........................................................................................................................ 19-13
19.5.1 I/O Signal Connection Example ............................................................................................ 19-14
19.5.2 Connectors and pin assignment ........................................................................................... 19-29
19.5.3 Signal (device) explanations ................................................................................................. 19-31
19.5.4 Interface ................................................................................................................................ 19-37
19.6 Monitor display with MR Configurator2........................................................................................ 19-41
19.7 Dimensions .................................................................................................................................. 19-43
19.7.1 MR-D01 extension I/O unit.................................................................................................... 19-43
19.7.2 When an MR-D01 extension IO unit is connected to a servo amplifier ................................ 19-43
19.8 Options peripheral equipment ..................................................................................................... 19-44
19.8.1 Combinations of cable/connector sets.................................................................................. 19-44
19.8.2 PS7DW-20V14B-F (Junction terminal block) (recommended)............................................. 19-45
19.8.3 MR-TB50 (Junction terminal block)....................................................................................... 19-47
APPENDIX App.- 1 to App.-73
App. 1 Peripheral equipment manufacturer (for reference)..............................................................App.- 1
App. 2 Handling of AC servo amplifier batteries for the United Nations Recommendations on the
Transport of Dangerous Goods ............................................................................................App.- 1
App. 3 Symbol for the new EU Battery Directive..............................................................................App.- 4
App. 4 Compliance with global standards ........................................................................................App.- 5
App. 5 MR-J3-D05 Safety logic unit ................................................................................................App.-21
App. 6 EC declaration of conformity................................................................................................App.-39
App. 7 Analog monitor .....................................................................................................................App.-42
App. 8 Two-wire type encoder cable for HG-MR/HG-KR................................................................App.-56
App. 9 How to replace servo amplifier without magnetic pole detection.........................................App.-57
App. 10 Special specification.............................................................................................................App.-59
App. 11 Driving on/off of main circuit power supply with DC power supply ......................................App.-63
App. 12 STO function with SIL 3 certification ....................................................................................App.-65
App. 13 When using the servo amplifier with the DC power supply input.........................................App.-67
App. 14 Status of general-purpose AC servo products for compliance with the China RoHS directive ..........App.-72

10
MEMO

1. FUNCTIONS AND CONFIGURATION
1 - 1
1. FUNCTIONS AND CONFIGURATION
POINT
In MELSERVO-J4 series, ultra-small capacity servo amplifiers compatible with
48 V DC and 24 V DC power supplies are available as MR-J4-03A6(-RJ). Refer
to chapter 18 for details of MR-J4-03A6(-RJ) servo amplifiers.
1.1 Summary
The Mitsubishi Electric MELSERVO-J4 series general-purpose AC servo has further higher performance
and higher functions compared to the previous MELSERVO-J3 series.
The MELSERVO-J4 series compatible rotary servo motor is equipped with 22-bit (4194304 pulses/rev) high-
resolution absolute encoder. In addition, speed frequency response is increased to 2.5 kHz. Thus, faster and
more accurate control is enabled as compared to the MELSERVO-J3 series.
The servo amplifier has position, speed, and torque control modes. In the position control mode, the
maximum pulse train of 4 Mpulses/s is supported. Further, it can perform operation with the control modes
switched, e.g. position/speed control, speed/torque control and torque/position control. Hence, it is
applicable to a wide range of fields, not only precision positioning and smooth speed control of machine tools
and general industrial machines but also line control and tension control.
With one-touch tuning and real-time auto tuning, you can automatically adjust the servo gains according to
the machine.
The tough drive function and the drive recorder function, which are well-received in the MELSERVO-JN
series, have been improved. The MR-J4 servo amplifier supports the improved functions. Additionally, the
preventive maintenance support function detects an error in the machine parts. This function provides strong
support for the machine maintenance and inspection.
The MR-J4-_A_ servo amplifier supports the STO (Safe Torque Off) function. By combining with optional
MR-J3-D05, the servo amplifier supports SS1 (Safe Stop 1) function.
The servo amplifier has a USB communication interface. Therefore, you can connect the servo amplifier to
the personal computer with MR Configurator2 installed to perform the parameter setting, test operation, gain
adjustment, and others.
In the MELSERVO-J4 series, servo amplifiers with the CN2L connector are also available as MR-J4-_A_-RJ.
By using the CN2L connector, an A/B/Z-phase differential output method external encoder can be connected
to the servo amplifier. In a fully closed loop system, a four-wire type external encoder is connectable as well.
The following table indicates the communication method of the external encoder compatible with the MR-J4-
_A_ and MR-J4-_A_-RJ servo amplifiers.