Mitsubishi Electric MR-J4, MR-J4-03A6 Instruction Manual

General-Purpose AC Servo

General-Purpose Interface AC Servo

MODEL

MR-J4-_A_(-RJ)
MR-J4-03A6(-RJ)

SERVO AMPLIFIER
INSTRUCTION MANUAL

K

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

CAUTION

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 that incorrect handling may cause hazardous conditions,

resulting in death or severe injury.

Indicates that incorrect handling may cause hazardous conditions,

resulting in medium or slight injury to personnel or may cause physical
damage.

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 - 1

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, and 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, and 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 molded­case 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 - 2

3. To prevent injury, note the following

CAUTION

Only the voltage specified in the Instruction Manual should be applied to each terminal. Otherwise, a
burst, damage, etc. may occur.
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 power is on or for
some time after power-off. Take safety measures, e.g. provide covers, to prevent accidental contact of
hands and parts (cables, etc.) with them.

4. Additional instructions

The following instructions should also be fully noted. Incorrect handling may cause a fault, 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 when transporting 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.
The equipment must be installed in the specified direction.
Leave specified clearances between the servo amplifier and the cabinet walls 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 strike the servo amplifier and servo motor. Isolate them from all impact loads.
When you keep or use the equipment, please fulfill the following environment.

temperature

When the equipment has been stored for an extended period of time, consult your local sales office.
When handling the servo amplifier, be careful about the edged parts such as corners of the servo
amplifier.
The servo amplifier must be installed in the metal cabinet.
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 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 (heat method).Additionally,
disinfect and protect wood from insects before packing products.

Items Environment

Ambient

Ambient
humidity

Vibration resistance 5.9 m/s

Operation 0 °C to 55 °C (non-freezing)

Storage -20 °C to 65 °C (non-freezing)

Operation

Storage

Ambience Indoors (no direct sunlight), free from corrosive gas, flammable gas, oil mist, dust, and dirt

Altitude Max. 1000 m above sea level

90 %RH or less (non-condensing)

2

at 10 Hz to 55 Hz (directions of X, Y, and Z axes)

A - 3

r

(2) Wiring

CAUTION

Wire the equipment correctly and securely. Otherwise, the servo motor may operate unexpectedly.
Do not install a power capacitor, surge killer, or radio noise filter (FR-BIF-(H) option) on the servo
amplifier output side.
To avoid a malfunction, connect the wires to the correct phase terminals (U, V, and W) of the servo
amplifier and servo motor.
Connect the servo amplifier power output (U, V, and W) to the servo motor power input (U, V, and W)
directly. Do not let a magnetic contactor, etc. intervene. Otherwise, it may cause a malfunction.

Servo amplifier

U

V

W

Servo motor

U

V

W

Servo motorServo amplifier

U

M

V

W

U

V

W

M

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 emergency stop and other protective circuits may not operate.

Servo amplifier

DOCOM

Control output
signal

For sink output interface

24 V DC

RA

Servo amplifie

DOCOM

Control output
signal

For source output interface

24 V DC

RA

When the cable is not tightened enough to the terminal block, the cable or terminal block may generate
heat because of the poor contact. Be sure to tighten the cable with specified torque.
Connecting a servo motor for different axis to the U, V, W, or CN2 may cause a malfunction.

(3) Test run and adjustment

CAUTION

Before operation, check the parameter settings. Improper settings may cause some machines to perform
unexpected operation.
Never adjust or change the parameter values extremely as it will make operation unstable.
Do not close to moving parts at servo-on status.

(4) Usage

CAUTION

Provide an external emergency stop circuit to ensure that operation can be stopped and power switched
off immediately.
Do not disassemble, repair, or modify the equipment.

A - 4

CAUTION

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 be given to the electronic equipment used near the servo amplifier.
Burning or breaking a servo amplifier may cause a toxic gas. Do not burn or break it.
Use the servo amplifier with the specified servo motor.
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 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.

(5) Corrective actions

CAUTION

When it is assumed that a hazardous condition may occur due to a power failure or product malfunction,
use a servo motor with an electromagnetic brake or external brake to prevent the condition.
Configure an electromagnetic brake circuit so that it is activated also by an external EMG stop switch.

Contacts must be opened when ALM
(Malfunction) or MBR (Electromagnetic
brake interlock) turns off.

Contacts must be opened
with the EMG stop switch.

Servo motor

B

Electromagnetic brake

When any alarm has occurred, eliminate its cause, ensure safety, and deactivate the alarm before
restarting operation.
Provide an adequate protection to prevent unexpected restart after an instantaneous power failure.

RA

24 V DC

(6) Maintenance, inspection and parts replacement

CAUTION

With age, the electrolytic capacitor of the servo amplifier will deteriorate. To prevent a secondary
accident due to a malfunction, it is recommend that the electrolytic capacitor be replaced every 10 years
when it is used in general environment. Please contact your local sales office.
When using a servo amplifier whose power has not been turned on for a long 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 Specifications and
Instruction Manual.

A - 5

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

When using the STO function of the servo amplifier, refer to chapter 13.
For the MR-J3-D05 safety logic unit, refer to appendix 5.

Compliance with global standards

For the compliance with global standards, refer to appendix 4.

«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, refer to chapter 18.

Relevant manuals

Manual name Manual No.
MR-J4-_A_-RJ Servo Amplifier Instruction Manual (Positioning Mode) (Note 5) SH(NA)030143
MR-J4-DU_(-RJ)/MR-CR55K_ INSTRUCTION MANUAL (Note 6) SH(NA)030153
MR-J4 Servo Amplifier Instruction Manual (Troubleshooting) SH(NA)030109
MELSERVO Servo Motor Instruction Manual (Vol. 3) (Note 1) SH(NA)030113
MELSERVO Linear Servo Motor Instruction Manual (Note 2) SH(NA)030110
MELSERVO Direct Drive Motor Instruction Manual (Note 3) SH(NA)030112
MELSERVO Linear Encoder Instruction Manual (Note 2, 4) SH(NA)030111
EMC Installation Guidelines IB(NA)67310
PARAMETER UNIT MR-PRU03 INSTRUCTION MANUAL (MR-J4) SH(NA)030186

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-J4-DU_A_(-RJ) drive unit and MR-CR55K_ converter unit.

A - 6

«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]

A - 7

MEMO

A - 8

CONTENTS

1. FUNCTIONS AND CONFIGURATION 1- 1 to 1-54

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 ....................................................................... 1-17

1.5 Function list ...................................................................................................................................... 1-19

1.6 Model designation ............................................................................................................................ 1-22

1.7 Structure .......................................................................................................................................... 1-23

1.7.1 Parts identification ..................................................................................................................... 1-23

1.7.2 Removal and reinstallation of the front cover............................................................................ 1-38

1.8 Configuration including peripheral equipment ................................................................................. 1-40

2. INSTALLATION 2- 1 to 2- 6

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 lives ................................................................................................................. 2- 6

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

3.7.3 Vertical axis freefall prevention function ................................................................................... 3-58

1

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

2

5. PARAMETERS 5- 1 to 5-66

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

5.2 Detailed list of parameters ............................................................................................................... 5-12

5.2.1 Basic setting parameters ([Pr. PA_ _ ]) ..................................................................................... 5-12

5.2.2 Gain/filter setting parameters ([Pr. PB_ _ ]) .............................................................................. 5-25

5.2.3 Extension setting parameters ([Pr. PC_ _ ]) ............................................................................. 5-37

5.2.4 I/O setting parameters ([Pr. PD_ _ ]) ........................................................................................ 5-51

5.2.5 Extension setting 2 parameters ([Pr. PE_ _ ]) ........................................................................... 5-59

5.2.6 Extension setting 3 parameters ([Pr. PF_ _ ]) ........................................................................... 5-62

5.2.7 Linear servo motor/DD motor setting parameters ([Pr. PL_ _ ]) ............................................... 5-64

6. NORMAL GAIN ADJUSTMENT 6- 1 to 6-24

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- 3

6.2.2 Display transition and operation procedure of one-touch tuning ............................................... 6- 5

6.2.3 Caution for one-touch tuning ..................................................................................................... 6-13

6.3 Auto tuning ....................................................................................................................................... 6-14

6.3.1 Auto tuning mode ...................................................................................................................... 6-14

6.3.2 Auto tuning mode basis ............................................................................................................. 6-15

6.3.3 Adjustment procedure by auto tuning ....................................................................................... 6-16

6.3.4 Response level setting in auto tuning mode ............................................................................. 6-17

6.4 Manual mode ................................................................................................................................... 6-18

6.5 2 gain adjustment mode .................................................................................................................. 6-21

7. SPECIAL ADJUSTMENT FUNCTIONS 7- 1 to 7-38

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- 7

7.1.4 Low-pass filter ............................................................................................................................ 7- 8

7.1.5 Advanced vibration suppression control II ................................................................................. 7- 8

7.1.6 Command notch filter ................................................................................................................ 7-13

7.2 Gain switching function .................................................................................................................... 7-15

7.2.1 Applications ............................................................................................................................... 7-15

7.2.2 Function block diagram ............................................................................................................. 7-16

7.2.3 Parameter .................................................................................................................................. 7-17

7.2.4 Gain switching procedure ......................................................................................................... 7-20

7.3 Tough drive function ........................................................................................................................ 7-24

3

7.3.1 Vibration tough drive function.................................................................................................... 7-24

7.3.2 Instantaneous power failure tough drive function ..................................................................... 7-26

7.4 Compliance with SEMI-F47 standard .............................................................................................. 7-30

7.5 Model adaptive control disabled ...................................................................................................... 7-33

7.6 Lost motion compensation function ................................................................................................. 7-34

7.7 Super trace control .......................................................................................................................... 7-37

8. TROUBLESHOOTING 8- 1 to 8- 8

8.1 Explanation for the lists ..................................................................................................................... 8- 1

8.2 Alarm list ........................................................................................................................................... 8- 2

8.3 Warning list ....................................................................................................................................... 8- 7

9. OUTLINE DRAWINGS 9- 1 to 9-22

9.1 Servo amplifier .................................................................................................................................. 9- 1

9.2 Connector ........................................................................................................................................ 9-20

10. CHARACTERISTICS 10- 1 to 10-14

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- 8

10.3.2 Permissible load to motor inertia when the dynamic brake is used ...................................... 10-11

10.4 Cable bending life ........................................................................................................................ 10-12

10.5 Inrush currents at power-on of main circuit and control circuit .................................................... 10-13

11. OPTIONS AND AUXILIARY EQUIPMENT 11- 1 to 11-116

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

11.6 Junction terminal block MR-TB50 ................................................................................................ 11-51

11.7 MR Configurator2 ........................................................................................................................ 11-54

4

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 ........................................................................................... 11-83

11.12 Power factor improving AC reactors ........................................................................................... 11-87

11.13 Relays (recommended) .............................................................................................................. 11-90

11.14 Noise reduction techniques ........................................................................................................ 11-91

11.15 Earth-leakage current breaker .................................................................................................... 11-98

11.16 EMC filter (recommended) ........................................................................................................ 11-101

11.17 External dynamic brake ............................................................................................................ 11-105

11.18 Heat sink outside mounting attachment (MR-J4ACN15K/MR-J3ACN) .................................... 11-112

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

13. USING STO FUNCTION 13- 1 to 13-12

13.1 Introduction ................................................................................................................................... 13- 1

13.1.1 Summary ................................................................................................................................ 13- 1

5

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- 9

13.4 Detailed description of interfaces ................................................................................................ 13-10

13.4.1 Sink I/O interface ................................................................................................................... 13-10

13.4.2 Source I/O interface .............................................................................................................. 13-11

14. COMMUNICATION FUNCTION (MITSUBISHI GENERAL-PURPOSE AC SERVO PROTOCOL)

14- 1 to 14-38

14.1 Structure ....................................................................................................................................... 14- 1

14.1.1 Configuration diagram ............................................................................................................ 14- 1

14.1.2 Precautions for using RS-422/RS-232C/USB communication function ................................ 14- 3

14.2 Communication specifications ...................................................................................................... 14- 4

14.2.1 Outline of communication ...................................................................................................... 14- 4

14.2.2 Parameter setting ................................................................................................................... 14- 4

14.3 Protocol ......................................................................................................................................... 14- 5

14.3.1 Transmission data configuration ............................................................................................ 14- 5

14.3.2 Character codes ..................................................................................................................... 14- 6

14.3.3 Error codes ............................................................................................................................. 14- 7

14.3.4 Checksum .............................................................................................................................. 14- 7

14.3.5 Time-out processing............................................................................................................... 14- 7

14.3.6 Retry processing .................................................................................................................... 14- 8

14.3.7 Initialization ............................................................................................................................ 14- 8

14.3.8 Communication procedure example ...................................................................................... 14- 9

14.4 Command and data No. list ......................................................................................................... 14-10

14.4.1 Reading command ................................................................................................................ 14-10

14.4.2 Writing commands ................................................................................................................ 14-16

14.5 Detailed explanations of commands ............................................................................................ 14-18

14.5.1 Data processing .................................................................................................................... 14-18

14.5.2 Status display mode .............................................................................................................. 14-20

14.5.3 Parameter ............................................................................................................................. 14-21

14.5.4 External I/O signal status (DIO diagnosis) ............................................................................ 14-25

14.5.5 Input device on/off ................................................................................................................. 14-28

14.5.6 Disabling/enabling I/O devices (DIO) .................................................................................... 14-29

14.5.7 Input devices on/off (test operation) ...................................................................................... 14-30

14.5.8 Test operation mode ............................................................................................................. 14-31

14.5.9 Output signal pin on/off (output signal (DO) forced output) .................................................. 14-35

14.5.10 Alarm history ....................................................................................................................... 14-36

14.5.11 Current alarm ...................................................................................................................... 14-37

14.5.12 Other commands................................................................................................................. 14-38

6

15. USING A LINEAR SERVO MOTOR 15- 1 to 15-30

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 ............................................................................ 15-22

15.3.5 Function................................................................................................................................. 15-23

15.3.6 Absolute position detection system ....................................................................................... 15-26

15.4 Characteristics ............................................................................................................................. 15-27

15.4.1 Overload protection characteristics ...................................................................................... 15-27

15.4.2 Power supply capacity and generated loss .......................................................................... 15-28

15.4.3 Dynamic brake characteristics .............................................................................................. 15-29

15.4.4 Permissible load to motor mass ratio when the dynamic brake is used ............................... 15-30

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

17.3.1 Startup ................................................................................................................................... 17-10

17.3.2 Home position return ............................................................................................................. 17-17

17.3.3 Fully closed loop control error detection functions................................................................ 17-19

17.3.4 Auto tuning function .............................................................................................................. 17-20

7

17.3.5 Machine analyzer function .................................................................................................... 17-20

17.3.6 Test operation mode ............................................................................................................. 17-20

17.3.7 Absolute position detection system under fully closed loop system ..................................... 17-21

17.3.8 About MR Configurator2 ....................................................................................................... 17-22

18. MR-J4-03A6 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

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

8

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 Mitsubishi general-purpose AC servo protocol communication function .................................... 18-82

APPENDIX App.- 1 to App.-52

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.- 3

App. 4 Compliance with global standards ........................................................................................ App.- 4

App. 5 MR-J3-D05 Safety logic unit ................................................................................................ App.-19

App. 6 EC declaration of conformity ................................................................................................ App.-37

App. 7 Analog monitor ..................................................................................................................... App.-39

App. 8 Two-wire type encoder cable for HG-MR/HG-KR ................................................................ App.-46

App. 9 How to replace servo amplifier without magnetic pole detection ......................................... App.-47

App. 10 Special specification ............................................................................................................. App.-49

App. 11 Driving on/off of main circuit power supply with DC power supply ....................................... App.-51

9

MEMO

10

1. FUNCTIONS AND CONFIGURATION

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 MRJ4-03A6. Refer to
chapter 18 for details of MR-J4-03A6 servo amplifiers.

1.1 Summary

The Mitsubishi 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) high­resolution 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 Safe Torque Off (STO) function. By combining with optional
MR-J3-D05, the servo amplifier supports Safe stop 1 (SS1) 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.

1 - 1

1. FUNCTIONS AND CONFIGURATION

Table 1.1 Connectors to connect from external encoders

Operation

mode

Linear servo
motor system

Fully closed
loop system

Note 1. The MR-J4THCBL03M branch cable is necessary.

2. The MR-J4FCCBL03M branch cable is necessary.

3. When the communication method of the servo motor encoder is four-wire type,
MR-J4-_A_ cannot be used. Use an MR-J4-_A_-RJ.

4. This is used with software version A5 or later.

5. Connect a thermistor to CN2.

External encoder

communication

method

Two-wire type

Four-wire type

A/B/Z-phase

differential output

method

Two-wire type

Four-wire type

A/B/Z-phase

differential output

method

Connector

MR-J4-_A_ MR-J4-_A_-RJ

CN2

(Note 1, 4)

CN2

(Note 2, 3, 4)

CN2

(Note 1)

CN2L

(Note 5)

CN2L

1 - 2

1. FUNCTIONS AND CONFIGURATION

1.2 Function block diagram

The function block diagram of this servo is shown below.

Regenerative

option

(1) 200 V class

(a) MR-J4-500A(-RJ) or less

POINT

The diagram shows MR-J4-_A_-RJ as an example. The MR-J4-_A_ servo
amplifier does not have the CN2L connector.

(Note 6)

Power factor improving

DC reactor

(Note 2)
Power
supply

STO

switch

Servo amplifier

MCMCCB

L1

U

L2

U U

L3

L11

L21

CN8

P3 P4

Diode

stack

Position

command

input

+

(Note 4)

Relay

Cooling fan

(Note 3)

Control

circuit

power

Model

position

control

+

CHARGE

lamp

STO

circuit

Base

amplifier

P+

(Note 1)

Regene-

rative

Model
speed

control

TR

Voltage

detection

N-CD

Overcurrent

protection

Virtual

motor

detection

Virtual

encoder

Dynamic

brake
circuit

Current

encoder

Current

Step­down

circuit

U

V

W

RA

24 V DC

CN2

Servo motor

U

V

W

B1

B

B2

M

Electromagnetic
brake

Encoder

Model position

Actual

position

control

I/F

CN1

DI/O control

Analog

(two channel)

Servo-on
Input command pulse.
Start
Malfunction, etc

Model speed Model torque

Actual
speed

control

USB

CN5 CN3 CN6

Personal

computer

USB

Controller

RS-422/

RS-485

Current

control

RS-422/

RS-485

D/AA/D

Analog monitor

(two channel)

CN4

Battery
(for absolute position
detection system)

External encoder

CN2L

(Note 5)

1 - 3

1. FUNCTIONS AND CONFIGURATION

Note 1. The built-in regenerative resistor is not provided for MR-J4-10A(-RJ).

2. For 1-phase 200 V AC to 240 V AC, connect the power supply to L1 and L3. Leave L2 open.
For the power supply specifications, refer to section 1.3.

3. Servo amplifiers MR-J4-70A(-RJ) or more have a cooling fan.

4. The MR-J4 servo amplifier has P3 and P4 in the upstream of the inrush current suppression circuit. They are different from P1
and P2 of the MR-J3 servo amplifiers.

5. This is for the MR-J4-_A-RJ servo amplifier. The MR-J4-_A servo amplifier does not have the CN2L connector.

6. The power factor improving AC reactor can also be used. In this case, the power factor improving DC reactor cannot be used.
When not using the power factor improving DC reactor, short P3 and P4.

1 - 4

1. FUNCTIONS AND CONFIGURATION

(b) MR-J4-700A(-RJ)

(Note 4)

Power factor improving

DC reactor

Regenerative

option

(Note 1)
Power
supply

STO

switch

Servo amplifier

MCMCCB

L1

U

L2

U U

L3

L11

L21

CN8

P3 P4

Diode

stack

Position

command

input

+

(Note 2)

Relay

Cooling fan

Control

circuit

power

Model

position

control

+

CHARGE

lamp

STO

circuit

Base

amplifier

P+

Regene-

rative

TR

Model
speed

control

Voltage

detection

N-C

Overcurrent

Virtual

motor

protection

detection

Virtual

encoder

Dynamic

brake
circuit

Current

encoder

Current

Step­down

circuit

U

V

W

RA

24 V DC

CN2

Servo motor

U

V

W

B1

B

B2

M

Electromagnetic
brake

Encoder

Model position Model speed Model torque

Actual

position

control

Actual
speed

control

Current

control

CN4

Battery
(for absolute position
detection system)

External encoder

CN2L

(Note 3)

RS-422/

RS-485

Controller

RS-422/

RS-485

D/AA/D

Analog monitor

(two channel)

Analog

(two channel)

I/F

CN1

DI/O control

Servo-on
Input command pulse.
Start
Malfunction, etc

USB

CN5 CN3 CN6

Personal
computer

USB

Note 1. For the power supply specifications, refer to section 1.3.

2. The MR-J4 servo amplifier has P3 and P4 in the upstream of the inrush current suppression circuit. They are different from P1
and P2 of MR-J3 servo amplifiers.

3. This is for the MR-J4-_A-RJ servo amplifier. The MR-J4-_A servo amplifier does not have the CN2L connector.

4. The power factor improving AC reactor can also be used. In this case, the power factor improving DC reactor cannot be used.
When not using the power factor improving DC reactor, short P3 and P4.

1 - 5

1. FUNCTIONS AND CONFIGURATION

(c) MR-J4-11KA(-RJ)/MR-J4-15KA(-RJ)/MR-J4-22KA(-RJ)

External regenerative

regenerative option

(Note 2)

Thyristor

+

CHARGE

lamp

STO

circuit

Base

amplifier

resistor or

Regene-

rative

TR

detection

Voltage

(Note 1)
Power
supply

STO

switch

Servo amplifier

MCMCCB

L1

U

L2

U U

L3

L11

L21

CN8

(Note 5)

Power factor improving

DC reactor

P3 P+

Diode

stack

P4

Cooling fan

Control

+

circuit

power

(Note 4, 6)

External dynamic

brake (optional)

RA

Servo motor

U

V

M

W

B1

Electromagnetic

B

brake

N-

C

U

Current

encoder

V

W

24 V DC

B2

Overcurrent

protection

Current

detection

CN2

Encoder

Current

control

Virtual

encoder

Step­down

circuit

CN4

Battery
(for absolute position
detection system)

External encoder

CN2L

Position

command

input

Model

position

control

Model position

Actual

position

control

Model
speed

control

Virtual

motor

Model speed Model torque

Actual
speed

control

(Note 3)

RS-422/

RS-485

Controller

RS-422/

RS-485

D/AA/D

Analog monitor

(two channel)

Analog

(two channel)

I/F

CN1

DI/O control

Servo-on
Input command pulse.
Start
Malfunction, etc

USB

CN5 CN3 CN6

Personal

computer

USB

Note 1. For the power supply specifications, refer to section 1.3.

2. The MR-J4 servo amplifier has P3 and P4 in the upstream of the inrush current suppression circuit. They are different from P1
and P2 of the MR-J3 servo amplifiers.

3. This is for the MR-J4-_A-RJ servo amplifier. The MR-J4-_A servo amplifier does not have the CN2L connector.

4. Use an external dynamic brake for this servo amplifier. Failure to do so will cause an accident because the servo motor dose
not stop immediately but coasts at an alarm occurrence for which the servo motor does not decelerate to stop. Ensure the
safety in the entire equipment. For alarms for which the servo motor does not decelerate to stop, refer to chapter 8.

5. The power factor improving AC reactor can also be used. In this case, the power factor improving DC reactor cannot be used.
When not using the power factor improving DC reactor, short P3 and P4.

6. The external dynamic brake cannot be used for compliance with SEMI-F47 standard. Do not assign DB (Dynamic brake
interlock) in [Pr. PD23] to [Pr. PD26], [Pr. PD28], and [Pr. PD47]. Failure to do so will cause the servo amplifier to become
servo-off when an instantaneous power failure occurs.

1 - 6

1. FUNCTIONS AND CONFIGURATION

(2) 400 V class

(a) MR-J4-350A4(-RJ) or less

(Note 5)

Power factor

improving

DC reactor

Regenerative

option

(Note 1)
Power
supply

STO

switch

Servo amplifier

MCMCCB

L1

U

L2

U U

L3

L11

L21

CN8

P3 P4 (Note 3)

Diode
stack

+

Position

command

input

Relay

(Note 2)

Control

circuit
power

supply

Model

position

control

+

Cooling fan

STO

circuit

Base

amplifier

P+

Regene­rative
TR

Charge

lamp

Model
speed
control

Voltage

detection

N-CD

Overcurrent

protection

Virtual

motor

detection

Virtual

encoder

Dynamic

brake

circuit

Current

detector

Current

Step­down
circuit

U

V

W

RA

24 V DC

CN2

Servo motor

U

V

W

B1

B

B2

M

Electromagnetic
brake

Encoder

CN4

Battery
(For absolute
position detection
system)

External encoder
CN2L
(Note 4)

Analog

(2 channels)

Model position

Actual

position

control

I/F

CN1

DI/O control

•Servo-on

•Input command pulse.

•Start

•Malfunction, etc

Model speed Model torque

Actual
speed
control

USB

CN5 CN3 CN6

Personal

computer

USB

Controller

RS-422/

RS-485

Current

control

RS-422/

RS-485

D/AA/D

Analog monitor

(2 channels)

Note 1. Refer to section 1.3 for the power supply specification.

2. Servo amplifiers MR-J4-200A4(-RJ) or more have a cooling fan.

3. MR-J4 servo amplifier has P3 and P4 in the upstream of the inrush current suppression circuit. They are different from P1 and
P2 of MR-J3 servo amplifiers.

4. This is for MR-J4-_A4-RJ servo amplifier. MR-J4-_A4 servo amplifier does not have CN2L connector.

5. The power factor improving AC reactor can also be used. In this case, the power factor improving DC reactor cannot be used.
When not using the power factor improving DC reactor, short P3 and P4.

1 - 7

1. FUNCTIONS AND CONFIGURATION

(b) MR-J4-500A4(-RJ)/MR-J4-700A4(-RJ)

(Note 4)

Power factor

improving

DC reactor

Regenerative

option

(Note 1)
Power
supply

STO

switch

Servo amplifier

MCMCCB

L1

U

L2

U U

L3

L11

L21

CN8

P3 P4 (Note 2)

Diode
stack

+

Position

command

input

Relay

Control

circuit
power

supply

Model

position

control

+

Cooling fan

STO

circuit

Base

amplifier

P+

Regene­rative
TR

Charge

lamp

Model
speed
control

Voltage

detection

N-C

Overcurrent

Virtual

motor

protection

detection

Virtual

encoder

Dynamic

brake

circuit

Current

detector

Current

Step­down
circuit

U

V

W

RA

24 V DC

CN2

Servo motor

U

V

W

B1

B

B2

M

Electromagnetic
brake

Encoder

CN4

Battery
(For absolute
position detection
system)

External encoder

CN2L

(Note 3)

Analog

(2 channels)

Model position

Actual

position

control

I/F

CN1

DI/O control

•Servo-on

•Input command pulse.

•Start

•Malfunction, etc

Model speed Model torque

Actual
speed
control

USB

CN5 CN3 CN6

Personal

computer

USB

Controller

RS-422/

RS-485

Current

control

RS-422/

RS-485

D/AA/D

Analog monitor

(2 channels)

Note 1. Refer to section 1.3 for the power supply specification.

2. MR-J4 servo amplifier has P3 and P4 in the upstream of the inrush current suppression circuit. They are different from P1 and
P2 of MR-J3 servo amplifiers.

3. This is for MR-J4-_A4-RJ servo amplifier. MR-J4-_A4 servo amplifier does not have CN2L connector.

4. The power factor improving AC reactor can also be used. In this case, the power factor improving DC reactor cannot be used.
When not using the power factor improving DC reactor, short P3 and P4.

1 - 8

1. FUNCTIONS AND CONFIGURATION

(c) MR-J4-11KA4(-RJ)/MR-J4-15KA4(-RJ)/MR-J4-22KA4(-RJ)

(Note 1)
Power
supply

STO

switch

Servo amplifier

MCMCCB

L1

U

L2

U U

L3

L11

L21

CN8

(Note 5)

Power factor

improving

DC reactor

P3 P4 (Note 2)

Diode

stack

Control

+

circuit
power

supply

Thyristor

Cooling fan

External

regenerative resistor

or

regenerative option

P+

+

Regene­rative
TR

Charge

lamp

STO

circuit

Base

amplifier

Voltage

detection

N-C

Overcurrent

protection

Current

detector

Current

detection

(Note 4, 6)

External

dynamic brake

(optional)

U

V

W

W

RA

24 V DC

CN2

Servo motor

U

V

M

B1

Electromagnetic

B

brake

B2

Encoder

Virtual

motor

Current

control

RS-422/

RS-485

Virtual

encoder

D/AA/D

Analog monitor

(2 channels)

Step­down
circuit

CN4

Battery
(For absolute
position detection
system)

CN2L
(Note 3)

External encoder

Analog

(2 channels)

Position

command

input

Model

position

control

Actual

position

control

CN1

DI/O control

•Servo-on

•Input command pulse.

•Start

•Malfunction, etc

Model position

I/F

Model
speed
control

Model speed Model torque

Actual
speed
control

USB

CN5 CN3 CN6

Personal

computer

USB

Controller

RS-422/

RS-485

Note 1. Refer to section 1.3 for the power supply specification.

2. MR-J4 servo amplifier has P3 and P4 in the upstream of the inrush current suppression circuit. They are different from P1 and
P2 of MR-J3 servo amplifiers.

3. This is for MR-J4-_A4-RJ servo amplifier. MR-J4-_A4 servo amplifier does not have CN2L connector.

4. Use an external dynamic brake for this servo amplifier. Failure to do so will cause an accident because the servo motor does
not stop immediately but coasts at an alarm occurrence for which the servo motor does not decelerate to stop. Ensure the
safety in the entire equipment. For alarms for which the servo motor does not decelerate to stop, refer to chapter 8.

5. The power factor improving AC reactor can also be used. In this case, the power factor improving DC reactor cannot be used.
When not using the power factor improving DC reactor, short P3 and P4.

6. The external dynamic brake cannot be used for compliance with SEMI-F47 standard. Do not assign DB (Dynamic brake
interlock) in [Pr. PD23] to [Pr. PD26], [Pr. PD28], and [Pr. PD47]. Failure to do so will cause the servo amplifier to become
servo-off when an instantaneous power failure occurs.

1 - 9

1. FUNCTIONS AND CONFIGURATION

(3) 100 V class

Regenerative option

(Note 2)
Power
supply

STO

switch

Servo amplifier

MCMCCB

L1

L2

L11

L21

CN8

U

Relay

Position

command

input

Diode
stack

+

Control

circuit
power

Model

position

control

U

V

W

RA

Servo motor

M

B1

Electromagnetic

B

brake

B2

P+

(Note 1)

+

Charge

lamp

Regene-

+

rative
TR

N-CD

Dynamic brake

circuit

Current

encoder

U

V

W

24 V DC

STO

circuit

Base

amplifier

Voltage

detection

Overcurrent

protection

Current

detection

CN2

Encoder

Model
speed

control

Virtual

motor

Virtual

encoder

Step­down

circuit

Model position

Actual

position

control

Model speed Model torque

Actual

speed

control

Current

control

(Note 3)

RS-422/

RS-485

Controller

RS-422/

RS-485

D/AA/D

Analog monitor

(two channel)

Analog

(two channel)

I/F

CN1

DI/O control

•Servo-on

•Input command pulse.

•Start

•Malfunction, etc

Personal

computer

USB

USB

CN5 CN3 CN6

Note 1. The built-in regenerative resistor is not provided for MR-J4-10A1(-RJ).

2. Refer to section 1.3 for the power supply specifications.

3. This is for MR-J4-_A1-RJ servo amplifier. MR-J4-_A1 servo amplifier does not have CN2L connector.

CN4

Battery
(For absolute
position detection
system)

External encoder

CN2L

1 - 10

1. FUNCTIONS AND CONFIGURATION

1.3 Servo amplifier standard specifications

(1) 200 V class

Model: MR-J4-_(-RJ) 10A 20A 40A 60A 70A 100A 200A 350A 500A 700A 11KA 15KA 22KA

Output

Main circuit
power supply
input

Control circuit
power supply
input

Interface power
supply

Control method Sine-wave PWM control, current control method

Dynamic brake Built-in

Fully closed loop control Compatible (Note 9)
Load-side encoder interface (Note 10) Mitsubishi high-speed serial communication

Communication function

Encoder output pulses Compatible (A/B/Z-phase pulse)
Analog monitor Two channels

Position control
mode

Speed control
mode

Torque control
mode

Positioning mode

Protective functions

Functional safety STO (IEC/EN 61800-5-2)

Safety
performance

Rated voltage 3-phase 170 V AC
Rated current [A] 1.1 1.5 2.8 3.2 5.8 6.0 11.0 17.0 28.0 37.0 68.0 87.0 126.0

Voltage/Frequency

Rated current
(Note 11)

Permissible voltage
fluctuation

Permissible frequency
fluctuation

Power supply
capacity

Inrush current [A] Refer to section 10.5.
Voltage/Frequency 1-phase 200 V AC to 240 V AC, 50 Hz/60 Hz
Rated current [A] 0.2 0.3
Permissible voltage

fluctuation
Permissible frequency

fluctuation
Power

consumption
Inrush current [A] Refer to section 10.5.
Voltage 24 V DC ± 10%
Current capacity [A] (Note 1) 0.5 (including the CN8 connector signals)

Max. input pulse
frequency

Positioning feedback
pulse

Command pulse
multiplying factor

In-position range setting 0 pulse to ±65535 pulses (command pulse unit)
Error excessive ±3 revolutions
Torque limit Set by parameter setting or external analog input (0 V DC to +10 V DC/maximum torque)
Speed control range Analog speed command 1: 2000, Internal speed command 1: 5000
Analog speed command

input

Speed fluctuation ratio

Torque limit Set by parameter setting or external analog input (0 V DC to +10 V DC/maximum torque)
Analog torque command

input
Speed limit Set by parameter setting or external analog input (0 V DC to 10 V DC/rated speed)

Standards certified by CB

Response performance 8 ms or less (STO input off → energy shut off)
(Note 3)
Test pulse input (STO)
Mean time to dangerous

failure (MTTFd)
Diagnosis coverage (DC) Medium (90% to 99%)
Average probability of

dangerous failures per
hour (PFH)

[A] 0.9 1.5 2.6

[kVA] Refer to section 10.2.

[W] 30 45

3-phase or 1-phase

200 V AC to 240 V AC,

50 Hz/60 Hz

3-phase or 1-phase

170 V AC to 264 V AC

USB: Connection to a personal computer or others (MR Configurator2-compatible)

4 Mpulses/s (for differential receiver) (Note 6), 200 kpulses/s (for open collector)

0 to ±10 V DC/rated speed (The speed at 10 V is changeable with [Pr. PC12].)

±0.01% or less (load fluctuation: 0% to 100%), 0% (power fluctuation: ±10%)

±0.2% or less (ambient temperature: 25 °C ± 10 °C) when using analog speed command

Refer to "MR-J4-_A_-RJ Servo Amplifier Instruction Manual (Positioning Mode)" section 1.1.

The positioning mode is used by MR-J4-_A_-RJ servo amplifier with software version B3 or later.

Overcurrent shut-off, regenerative overvoltage shut-off, overload shut-off (electronic thermal),

servo motor overheat protection, encoder error protection, regenerative error protection,

undervoltage protection, instantaneous power failure protection, overspeed protection,

error excessive protection, magnetic pole detection protection, and linear servo control fault protection

3.2

(Note 5)

RS-422/RS-485: 1:n communication (up to 32 axes) (Note 7, 13)

Encoder resolution (resolution per servo motor revolution): 22 bits

Electronic gear A:1 to 16777215, B:1 to 16777215, 1/10 < A/B < 4000

0 V DC to ±8 V DC/maximum torque (input impedance 10 kΩ to 12 kΩ )

EN ISO 13849-1 category 3 PL d, IEC 61508 SIL 2, EN 62061 SIL CL 2,

3.8 5.0 10.5 16.0 21.7 28.9 46.0 64.0 95.0

1-phase 170 V AC to 264 V AC

and EN 61800-5-2 SIL 2

Test pulse interval: 1 Hz to 25 Hz

Test pulse off time: Up to 1 ms

3-phase 200 V AC to 240 V AC, 50 Hz/60 Hz

3-phase 170 V AC to 264 V AC

Within ±5%

Within ±5%

100 years or longer

-10

1.68 × 10

[1/h]

External option

(Note 8, 12)

1 - 11