Mitsubishi Electric Melservo-J4 MR-J4-DU*B4-RJ100 Series User manual

General-Purpose AC Servo
SSCNET III/H Interface
Drive Unit Instruction Manual
-MR-J4-DU_B4-RJ100

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".
Note that the CAUTION level may lead to a serious consequence depending on 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.
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.
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
minor or moderate injury or property 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 .

2
[To prevent electric shock, note the following]
[To prevent fire, note the following]
WARNING
●Before wiring, turn off the power and wait for 20 minutes or more until the charge lamp turns off. Then,
confirm that the voltage between L+ and L- is safe with a voltage tester or 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 converter unit.
●Ground the converter unit, drive unit, 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 converter unit, drive unit, and servo motor until they have been installed.
Otherwise, it may cause an electric shock.
●Do not operate the 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 converter unit and the drive unit.
Otherwise, it may cause an electric shock.
●Do not operate the converter unit and the drive unit with the front cover removed. High-voltage
terminals and charging area are exposed and you may get an electric shock.
●Except for wiring or periodic inspection, do not remove the front cover of the converter unit and the
drive unit even if the power is off. The converter unit and the drive unit are charged, and you may get
an electric shock.
●To prevent an electric shock, be sure to connect the protective earth (PE) terminal (marked ) of the
converter unit and the drive unit to the protective earth (PE) of the cabinet.
●To avoid an electric shock, insulate the connections of the power supply terminals.
CAUTION
●Install the converter unit, the drive unit, the servo motor, and the regenerative resistor on
incombustible material. Installing them directly or close to combustibles will lead to smoke or a fire.
●Be sure to connect a magnetic contactor between the power supply and the main circuit power supply
(L1/L2/L3) of the converter unit, in order to configure a circuit that shuts off the power supply by the
magnetic contactor. If the magnetic contactor is not connected, a continuous flow of a large current
may cause smoke or a fire when the converter unit or the drive unit malfunctions.
●Be sure to connect a magnetic contactor for each converter unit between the power supply and the
power supply (L1/L2/L3) of the converter unit, in order to configure a circuit that shuts off the power
supply by the magnetic contactor. If a molded-case circuit breaker or fuse is not connected, a
continuous flow of a large current may cause smoke or a fire when the converter unit malfunctions.
●When using the regenerative resistor, shut the power off with an alarm signal. Otherwise, a
regenerative transistor malfunction or the like may overheat the regenerative resistor, causing smoke
or a fire.
●Provide adequate protection to prevent screws and other conductive matter, oil and other combustible
matter from entering the converter unit, the drive unit, and the servo motor.

3
[To prevent injury, note the following]
[Additional instructions]
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 heat sink of the converter unit and drive unit, the regenerative resistor, the servo motor, etc. may
be hot while 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.
The following instructions should also be fully noted. Incorrect handling may cause a malfunction, injury, electric shock, fire,
etc.

4
[Transportation and installation]
CAUTION
●Transport the products correctly according to their mass.
●Use the eyebolts of the converter unit and of the drive unit only for transporting. Do not use the
eyebolts for transporting with the converter unit and the drive unit mounted on a machine.
●Do not overtighten the eyebolts of the converter unit and of the drive unit. Tightening too hard may
damage the tap.
●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 converter unit and drive unit.
Otherwise, it may drop.
●Install the converter unit, the drive unit, 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 converter unit/drive unit and the inner surfaces of a control
cabinet or other equipment.
●Do not install or operate the converter unit, the drive unit, and the servo motor which have been
damaged or have any parts missing.
●Do not block the intake and exhaust areas of the converter unit and the drive unit. Otherwise, it may
cause a malfunction.
●Do not drop or apply heavy impact on the converter units, the drive units, 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.
●When the equipment has been stored for an extended period of time, contact your local sales office.
●When handling the converter unit and the drive unit, be careful with the sharp edges of the converter
unit and drive unit.
●The converter unit and the drive unit must be installed in a 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 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.
Item Environment
Ambient
temperature
Operation
Storage
Ambient
humidity
Operation
Storage
Ambience
Altitude
Vibration resistance
0 °C to 55 °C (non-freezing)
-20 °C to 65 °C (non-freezing)
5 %RH to 90 %RH (non-condensing)
Indoors (no direct sunlight), free from corrosive gas, flammable gas, oil mist, dust, and dirt
2000 m or less above sea level (Contact your local sales office for the altitude for options.)
5.9 m/s
2
, at 10 Hz to 55 Hz (X, Y, Z axes)

5
[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 drive unit
output side.
●To avoid a malfunction of the servo motor, connect the wires to the correct phase terminals (U/V/W) of
the drive unit and the servo motor.
●Connect the drive unit power outputs (U/V/W) to the servo motor power inputs (U/V/W) directly. Do not
connect a magnetic contactor and others between them. Otherwise, it may cause a malfunction.
●The connection diagrams in this Instruction Manual are shown for sink interfaces, unless stated
otherwise.
●Install the surge absorbing diode to the DC relay for control output signals in the converter unit and the
drive unit 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.
●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 drive unit may cause a
malfunction.
●To prevent an unexpected restart of the drive unit, configure a circuit to turn off EM2 or EM1 when the
main circuit power is turned off.
●To prevent malfunction, avoid bundling the power lines (input/output) of the converter unit and the
signal cables together or running them in parallel to each other. Separate the power lines from the
signal cables.
U
Servo motor
MV
W
U
V
W
Drive unit
U
Servo motor
MV
W
U
V
W
Drive unit
DOCOM
Control
output signal
Control
output signal
24 V DC
Converter unit
Drive unit
RA
For sink output interface
DOCOM
24 V DC
Converter unit
Drive unit
RA
For source output interface

6
[Test run and adjustment]
[Usage]
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.
CAUTION
●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 drive unit is off 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 converter unit and the drive unit.
●Do not burn or destroy the converter unit and the drive unit. Doing so may generate a toxic gas.
●Use the converter unit and the drive unit with the specified servo motor.
●Correctly wire options and peripheral equipment, etc. in the correct 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.

7
[Corrective actions]
[Maintenance, inspection and parts replacement]
[General instruction]
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.
●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 converter unit and drive unit, 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.
●To prevent an electric shock, injury, or fire from occurring after an earthquake or other natural
disasters, ensure safety by checking conditions, such as the installation, mounting, wiring, and
equipment before switching the power on.
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 converter unit and the drive unit be replaced every 10 years when it is
used in general environment.
●When using a converter unit or a drive unit whose power has not been turned on for a long time,
contact your local sales office.
●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.
Servo motor
Electromagnetic brake
B
U
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

8
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 converter unit and the drive unit 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
STO FUNCTION OF THE DRIVE UNIT
When using the STO function of the drive unit, refer to chapter 13 of “MR-J4-_A_(-RJ) Servo Amplifier Instruction Manual".
For the MR-J3-D05 safety logic unit, refer to app. 5 of “MR-J4-_B_(-RJ) Servo Amplifier Instruction Manual".
COMPLIANCE WITH GLOBAL STANDARDS
For compliance with global standards, refer to "MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) Instruction Manual".

9
ABOUT THE MANUALS
You must have this Instruction Manual and the following manuals to use this servo. Be sure to prepare all the instruction
manuals necessary to use the servo safely.
Relevant manuals
*1 It is necessary for using an MR-D30 functional safety unit.
This Instruction Manual does not describe the following items. Refer to the section of the detailed explanation field for details.
"MR-J4-_B_" means "MR-J4-_B_(-RJ) Servo Amplifier Instruction Manual". "MR-J4-DU_B_" means "MR-CV_/MR-CR55K_/
MR-J4-DU_(-RJ) Instruction Manual".
*1 For parallel drive systems, the one-touch tuning is unavailable.
*2 A combination of the MR-CV55K4_ power regeneration converter unit and drive unit does not comply with SEMI-F47 standard. For the
advanced vibration suppression control II and the adaptive filter II, "Automatic setting” is invalid. Only "Manual setting" is valid.
*3 For absolute position detection systems, connect an optional battery to only the drive unit of the encoder master servo amplifier. Do not
connect the optional battery to the drive units of the encoder slave servo amplifiers.
CABLES USED FOR WIRING
Wires mentioned in this Instruction Manual are selected based on the ambient temperature of 40 .
U.S. CUSTOMARY UNITS
U.S. customary units are not shown in this manual. Convert the values if necessary according to the following table.
Manual name Manual No.
MELSERVO MR-J4-_B(-RJ) Servo Amplifier Instruction Manual SH(NA)030098
MELSERVO MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) Instruction Manual SH(NA)030145
MELSERVO-J4 Servo amplifier Instruction Manual (Troubleshooting) SH(NA)030108
MELSERVO MR-D30 Instruction Manual*1 SH(NA)030131
MELSERVO Servo Motor Instruction Manual (Vol. 3) SH(NA)030099
EMC Installation Guidelines IB(NA)67310
Item Detailed explanation
Normal gain adjustment *1 MR-J4-_B_ chapter 6
Special adjustment functions *2 MR-J4-_B_ chapter 7
Dimensions MR-J4-DU_B_ chapter 7
Absolute position detection system *3 MR-J4-_B_ chapter 12
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 [] × 9/5 + 32 N []

10
CONTENTS
SAFETY INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
DISPOSAL OF WASTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
EEP-ROM LIFE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
STO FUNCTION OF THE DRIVE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
COMPLIANCE WITH GLOBAL STANDARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
ABOUT THE MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
CABLES USED FOR WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
U.S. CUSTOMARY UNITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
CHAPTER 1 FUNCTIONS AND CONFIGURATION 12
1.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.2 Model designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.3 Combinations of power regeneration converter units, drive units, and servo motors . . . . . . . . . . . . . . . 13
1.4 Compatible controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.5 Function list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.6 Configuration including peripheral equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
CHAPTER 2 INSTALLATION 16
2.1 Installation direction and clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
CHAPTER 3 SIGNALS AND WIRING 20
3.1 Connection example of power circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2 Alarm occurrence timing chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
When you use the forced stop deceleration function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
When you do not use the forced stop deceleration function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.3 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
CHAPTER 4 STARTUP 32
4.1 Switching power on for the first time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.2 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CHAPTER 5 PARAMETERS 35
CHAPTER 6 TROUBLESHOOTING 41
6.1 Troubleshooting for MR-CV_ power regeneration converter unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Explanation for the lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Alarm list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Warning list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.2 Troubleshooting for drive unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Explanation for the lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Alarm list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Warning list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
CHAPTER 7 CHARACTERISTICS 55
7.1 Overload protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.2 Power supply capacity and generated loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7.3 Dynamic brake characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.4 Inrush currents at power-on of main circuit/control circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

11
CONTENTS
Inrush currents of the power regeneration converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Inrush current of the drive unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
CHAPTER 8 OPTIONS AND PERIPHERAL EQUIPMENT 61
8.1 MR Configurator2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Using the parallel drive system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
How to select the model name of the servo amplifier registered. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8.2 AC reactor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
8.3 External dynamic brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
CHAPTER 9 USING STO FUNCTION 72
CHAPTER 10 APPLICATION OF FUNCTIONS 74
10.1 Compatible with MR-D30 functional safety unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
CHAPTER 11 APPENDIX 78
11.1 Analog monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
REVISIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
TRADEMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

12 1 FUNCTIONS AND CONFIGURATION
1.1 Description
1FUNCTIONS AND CONFIGURATION
The following items are the same as those for MR-J4-_B_(-RJ). Refer to the section of the detailed explanation field for
details. "MR-J4-DU_B_" means "MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) Instruction Manual".
*1 Do not connect an external encoder to the CN2L connector of the MR-J4-DU_B4-RJ100 drive unit.
1.1 Description
This Instruction Manual describes MR-J4-DU_B4-RJ100 drive units and MR-CV55K4_ power regeneration converter units
compatible with parallel drive systems.
Parallel drive systems drive a servo motor with multiple MR-J4-DU_B4-RJ100 drive units and MR-CV55K4_ power
regeneration converter units connected. The encoder cables are wired by the daisy chain method. Delivering the encoder
information to all servo amplifiers, from encoder master servo amplifiers to encoder slave servo amplifiers, ensures reduced
wiring. A encoder distribution unit is not required.
The following shows a system that drives a servo motor with four MR-J4-DU_B4-RJ100 drive units and four MR-CV55K4_
power regeneration converter units connected. For the number of drive units required to be connected to one servo motor,
refer to the following.
Page 13 Combinations of power regeneration converter units, drive units, and servo motors
Item Detailed explanation
Function block diagram MR-J4-DU_B_ section 3.1
Standard specifications MR-J4-DU_B_ section 1.4
Structure *1 MR-J4-DU_B_ sections 3.2 and 5.1
Encoder slave servo amplifier 3Encoder slave servo amplifier 2Encoder slave servo amplifier 1
SSCNET III/H
Servo system
controller
Power
regeneration
converter unit 1
Drive
unit 1
Power
regeneration
converter unit 2
Drive
unit 2
Power
regeneration
converter unit 3
Drive
unit 3
Power
regeneration
converter unit 4
Drive
unit 4
Encoder master servo amplifier
Servo motor

1 FUNCTIONS AND CONFIGURATION
1.2 Model designation 13
1
1.2 Model designation
This section describes MR-J4-DU_B4-RJ100 drive units only. For MR-CV55K4_power regeneration converter
units, refer to section 1.2 in "MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) Instruction Manual".
Rating plate
The following shows an example of the rating plate for explanation of each item.
Model
The following describes what each block of a model name indicates. Not all combinations of the symbols are available.
1.3 Combinations of power regeneration converter
units, drive units, and servo motors
Power regeneration converter unit Drive unit Rotary servo motor
Two units of MR-CV55K4 Two units of MR-J4-DU55KB4-RJ100 HG-JR110K24W0C
Four units of MR-CV55K4 Four units of MR-J4-DU45KB4-RJ100 HG-JR150K24W0C
HG-JR180K24W0C
Four units of MR-CV55K4 Four units of MR-J4-DU55KB4-RJ100 HG-JR200K24W0C
HG-JR220K24W0C
Serial number
Model
Capacity
Applicable power supply
Rated output current
Standard, Manual number
Ambient temperature
IP rating
KC certification number
The year and month of manufacture
Country of origin
TOKYO 100-8310, JAPAN MADE IN JAPAN
DATE: 2017-12
MR-J4-DU55KB4-RJ100
SER. A7Z001001
AC SERVO
POWER
INPUT
OUTPUT
STD.: IEC/EN 61800-5-1 MAN.: IB(NA)0300228
Max. Surrounding Air Temp.: 55°C
IP20 (Terminal block IP00)
: 55kW
: DC513-648V 113.7A
: 3PH323V 0-360Hz 143.0A
MSIP-REI-MEK-TC301A013G52 BC343U843
Symbol Power supply
Series
43-phase 380 V AC to 480 V AC
Symbol Rated output [kW]
Rated output
Power supply
Interface
45K 45
55K 55
Indicates drive unit
B
Symbol Interface
SSCNET III/H
Symbol Special specifications
-RJ100
Special specifications
-MR - J 4 DU KB 4 - R J 15500
Compatible with parallel drive system

14 1 FUNCTIONS AND CONFIGURATION
1.4 Compatible controller
1.4 Compatible controller
*1 Motion controllers with a special operating system can be used. Motion controllers with a standard operating system cannot drive
ultrahigh capacity servo motors. For details, contact your local sales office.
1.5 Function list
For the drive unit functions not mentioned in this section, refer to section 1.5 in "MR-J4-_B_(-RJ) Servo Amplifier Instruction
Manual".
Motion controller Operating system Remark
Q173DSCPU SW8DNC-SV22S87QJ Special operating system *1
Q172DSCPU SW8DNC-SV22S87QL Special operating system *1
Function Description Detailed explanation
Advanced vibration
suppression control II
For parallel drive systems, "Automatic setting" is invalid. Only "Manual setting" is valid.
This function suppresses vibration and residual vibration at an arm end.
Page 35 PARAMETERS
Adaptive filter II For parallel drive systems, "Automatic setting" is invalid. Only "Manual setting" is valid.
The servo amplifier detects mechanical resonance and sets filter characteristics automatically
to suppress mechanical vibration.
Page 35 PARAMETERS
Scale measurement function For parallel drive systems, the scale measurement function is unavailable. 
J3 compatibility mode For parallel drive systems, the J3 compatibility mode is unavailable. 
Machine analyzer function For parallel drive systems, the machine analyzer function is unavailable. 
Test operation mode For parallel drive systems, the test operation mode is unavailable. 
Linear servo system For parallel drive systems, the linear servo system is unavailable. 
Direct drive servo system For parallel drive systems, the direct drive servo system is unavailable. 
Fully closed loop system For parallel drive systems, the fully closed loop system is unavailable. 
One-touch tuning For parallel drive systems, the one-touch tuning is unavailable. 
SEMI-F47 function A combination of the MR-CV55K4_ power regeneration converter unit and drive unit does not
comply with SEMI-F47 standard.
Page 35 PARAMETERS
Tough drive function The tough drive function includes two types: the vibration tough drive and the instantaneous
power failure tough drive. For parallel drive systems, only the vibration tough drive is available.
This function makes the equipment continue operating even under the condition that an alarm
occurs.
Page 35 PARAMETERS
STO function This function is a functional safety that complies with IEC/EN 61800-5-2. You can create a
safety system for the equipment easily.
Page 72 USING STO
FUNCTION
Power monitoring function When checking the power in the parallel drive system, use the servo system controller. This
function calculates the power running energy and the regenerative power from the data in the
servo amplifier such as speed and current. In the SSCNET III/H system, the data are sent to a
servo system controller for analyzing and displaying the power consumption on a display.

MR-D30 functional safety unit By using MR-D30 together, the safety observation function can be expanded. STO, SS1, SS2,
SOS, SLS, SSM, and SBC can be used.
Page 74 APPLICATION
OF FUNCTIONS
MR-J3-D05 safety logic unit For parallel drive systems, the MR-J3-D05 safety logic unit is unavailable. 
MR-CR_ resistance
regeneration converter unit
For parallel drive systems, the MR-CR_ resistance regeneration converter unit is unavailable. 

1 FUNCTIONS AND CONFIGURATION
1.6 Configuration including peripheral equipment 15
1
1.6 Configuration including peripheral equipment
The diagram shows a system that drives a servo motor with four MR-J4-DU_B4-RJ100 drive units and four MR-CV55K4_
power regeneration converter units connected.
*1 Connect the grounding wire of the servo motor to only the first drive unit. If the grounding wire of the servo motor is connected to two or
more drive units, the circulating current may pass through the grounding wire depending on wiring conditions. When connecting
grounding wires to two or more drive units, be sure to twist the wires of the drive unit power outputs (U/V/W) for safety reasons.
*2 For the power supply, one molded-case circuit breaker, one AC reactor (MR-AL-55K4-L), and one magnetic contactor are required for
each power regeneration converter unit.
*3 Since the system is connected via SSCNET III/H, use a servo amplifier near the Motion controller as an encoder master servo amplifier,
and use the remaining servo amplifiers as encoder slave servo amplifiers. Connect the encoder master servo amplifier and slave servo
amplifiers in series to the same SSCNET III/H system.
*4 The encoder cables between drive units should be within 5 m.
*5 Supply power to all the servo amplifiers (power regeneration converter units and drive units) from the same power source. If power is
supplied from different power sources, a difference may be generated between outputs of the encoder master servo amplifier and
encoder slave servo amplifiers. This may cause the servo motor to operate unpredictably.
*6 Even if an AC reactor is installed on the power regeneration converter unit, the functions operate normally.
*7 Switch on the control circuit power supplies of all the servo amplifiers (power regeneration converter units and drive units)
simultaneously.
*8 Stop all the drive units with the emergency stop of the controller if an alarm occurs.
AC reactor
*6
(MR-AL-55K4-L)
Power supply
*2, *5
3-phase
380 V AC to
480 V AC
Power supply
*2, *5
3-phase
380 V AC to
480 V AC
Power supply
*2, *5
3-phase
380 V AC to
480 V AC
Power supply
*2, *5
3-phase
380 V AC to
480 V AC
Encoder slave
servo amplifier 3
*3
AC reactor
*6
(MR-AL-55K4-L)
Encoder slave
servo amplifier 2
*3
AC reactor
*6
(MR-AL-55K4-L)
Encoder slave
servo amplifier 1
*3
SSCNET III/H
Fit a cap
(standard accessory)
on the unused connector.
Servo system
controller
*8
Dynamic brake
(DBU-P55K-4-B)
Dynamic brake
(DBU-P55K-4-B)
Dynamic brake
(DBU-P55K-4-B)
Dynamic brake
(DBU-P55K-4-B)
Power
regeneration
converter unit 1
Drive
unit 1
Power
regeneration
converter unit 2
Drive
unit 2
Power
regeneration
converter unit 3
Drive
unit 3
Power
regeneration
converter unit 4
Drive
unit 4
AC reactor
*6
(MR-AL-55K4-L)
Magnetic
contactor
(MC)
Magnetic
contactor
(MC)
Magnetic
contactor
(MC)
Molded-case
circuit breaker
(MCCB)
Molded-case
circuit breaker
(MCCB)
Molded-case
circuit breaker
(MCCB)
Magnetic
contactor
(MC)
Molded-case
circuit breaker
(MCCB)
Encoder master servo amplifier
*3
*7 *7 *7 *7
*4 *4 *4
*1
Servo motor

16 2 INSTALLATION
2INSTALLATION
The following items are the same as those for MR-J4-_B_(-RJ). Refer to the section of the detailed explanation field for
details. "MR-J4-_B_" means "MR-J4-_B_(-RJ) Servo Amplifier Instruction Manual". "MR-J4-DU_B_" means "MR-CV_/MR-
CR55K_/MR-J4-DU_(-RJ) Instruction Manual".
WARNING
• To prevent electric shock, ground each equipment securely.
CAUTION
• 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 converter unit and drive unit. Otherwise, it may drop.
• Install the equipment on incombustible material. Installing them directly or close to combustibles will lead to a fire.
• Install the converter unit, the drive unit, 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.
• Use the equipment within the specified environment. For the environment, refer to section 1.4 in "MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) Instruction
Manual".
• Provide adequate protection to prevent screws and other conductive matter, oil and other combustible matter from entering the converter unit and the drive
unit.
• Do not block the intake and exhaust areas of the converter unit and the drive unit. Otherwise, it may cause a malfunction.
• Do not drop or apply heavy impact on the converter units, the drive units, and the servo motors. Otherwise, it may cause injury, malfunction, etc.
• Do not install or operate the converter unit and the drive unit which have been damaged or have any parts missing.
• When the equipment has been stored for an extended period of time, contact your local sales office.
• When handling the converter unit and the drive unit, be careful with the sharp edges of the converter unit and drive unit.
• The converter unit and the drive unit must be installed in a 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 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.
Item Detailed explanation
Keeping out of foreign materials MR-J4-DU_B_ section 2.2
Encoder cable stress MR-J4-_B_ section 2.3
SSCNET III cable laying MR-J4-_B_ section 2.4
Inspection items MR-J4-DU_B_ section 2.3
Parts having service life MR-J4-DU_B_ section 2.4
Restrictions when using this product at altitude exceeding 1000 m and up to 2000 m above sea level MR-J4-DU_B_ section 2.5

2 INSTALLATION
2.1 Installation direction and clearances 17
2
2.1 Installation direction and clearances
Installation
Make sure to connect a drive unit to the right side of a power regeneration converter unit. Since the units require a cooling
mechanism outside the cabinet, an opening must be provided in each mounting surface as shown below.
The TE2-1 terminal block of the drive unit and the TE2 terminal block of the power regeneration converter unit are connected
using a bus bar. Thus, remove the supplied cover on the right side of the power regeneration converter unit.
■Clearance between sets of combined power regeneration converter units and drive units
mounted side by side
*1 A clearance of at least 120 mm is required. Leave a clearance, taking into consideration the flexibility of the cable.
CAUTION
• The equipment must be installed in the specified direction. Otherwise, it may cause a malfunction.
• Maintain specified clearances between the converter unit/drive unit and the inner surfaces of a control cabinet or other equipment. Otherwise, it may cause a
malfunction.
Cooling
fan
exhaust
80 mm
or more
SideFront
100 mm
or more
120 mm
or more *1
Drive unitConverter unit Drive unitConverter unit
30 mm
Top
Bottom

18 2 INSTALLATION
2.1 Installation direction and clearances
■Clearance between sets of combined power regeneration converter units and drive units
mounted above each other
*1 Take measures, such as installing a shield, to prevent cooling fan exhaust of the lower unit from affecting the cooling fan on the upper
unit.
*2 A clearance of at least 120 mm is required. Leave a clearance, taking into consideration the flexibility of the cable.
80 mm
or more
100 mm
or more
220 mm
or more
220 mm
or more *1
120 mm
or more *2
30 mm
30 mm
Cooling
fan
exhaust
Cooling
fan
exhaust
Side
Drive unitConverter unit
Drive unitConverter unit
Top
Bottom