Mitsubishi Electric MELSERVO-J2S Series User manual

Transition from MELSERVO-J2-Super/J2M Series to J4 Series Handbook
Complete Support for Upgrading Your
MELSERVO-J2S/J2M to MELSERVO-J4
Transition from MELSERVO-J2-Super/
J2M Series to J4 Series Handbook
Transition from MELSERVO-J2-Super/J2M Series to J4 Series Handbook
Country/Region Sales office
USA Mitsubishi Electric Automation, Inc.
500 Corporate Woods Parkway, Vernon Hills, IL 60061, U.S.A.
Tel : [phone]
Mexico Mitsubishi Electric Automation, Inc. Mexico Branch
Boulevard Miguel de Cervantes Saavedra 301, Torre Norte Piso 5, Ampliacion Granada,
Miguel Hidalgo, Ciudad de Mexico, Mexico, C.P.11520
Tel : [phone]
Brazil Mitsubishi Electric do Brasil Comercio e Servicos Ltda.
Avenida Adelino Cardana, 293, 21 andar, Bethaville, Barueri SP, Brazil
Tel : [phone]
Germany Mitsubishi Electric Europe B.V. German Branch
Mitsubishi-Electric-Platz 1, 40882 Ratingen, Germany
Tel : [phone]
UK Mitsubishi Electric Europe B.V. UK Branch
Travellers Lane, UK-Hatfield, Hertfordshire, AL10 8XB, U.K.
Tel : [phone]
Italy Mitsubishi Electric Europe B.V. Italian Branch
Centro Direzionale Colleoni - Palazzo Sirio, Viale Colleoni 7, 20864 Agrate Brianza (MB), Italy
Tel : [phone]
Spain Mitsubishi Electric Europe B.V. Spanish Branch
Carretera de Rubi, 76-80-Apdo. 420, E-08174 Sant Cugat del Valles (Barcelona), Spain
Tel : [phone]
France Mitsubishi Electric Europe B.V. French Branch
25, Boulevard des Bouvets, 92741 Nanterre Cedex, France
Tel : [phone]
Czech Republic Mitsubishi Electric Europe B.V. Czech Branch, Prague Office
Pekarska 621/7, 155 00 Praha 5, Czech Republic
Tel : [phone]
Poland Mitsubishi Electric Europe B.V. Polish Branch
ul. Krakowska 48, 32-083 Balice, Poland
Tel : [phone]
Russia Mitsubishi Electric (Russia) LLC St. Petersburg Branch
Startovaya street, 8, BC “Aeroplaza”, office 607; 196210, St. Petersburg, Russia
Tel : [phone]
Sweden Mitsubishi Electric Europe B.V. (Scandinavia)
Hedvig Mollersgata 6, 223 55 Lund, Sweden
Tel : [phone]
Turkey Mitsubishi Electric Turkey A.S. Umraniye Branch
Serifali Mah. Kale Sok. No:41 34775 Umraniye - Istanbul, Turkey
Tel : [phone]
UAE Mitsubishi Electric Europe B.V. Dubai Branch
Dubai Silicon Oasis, P.O.BOX 341241, Dubai, U.A.E.
Tel : [phone]
South Africa Adroit Technologies
20 Waterford Office Park, 189 Witkoppen Road, Fourways, South Africa
Tel : [phone]
China Mitsubishi Electric Automation (China) Ltd.
Mitsubishi Electric Automation Center, No.1386 Hongqiao Road, Shanghai, China
Tel : [phone]
Taiwan SETSUYO ENTERPRISE CO., LTD.
6F, No.105, Wugong 3rd Road, Wugu District, New Taipei City 24889, Taiwan
Tel : [phone]
Korea Mitsubishi Electric Automation Korea Co., Ltd.
7F to 9F, Gangseo Hangang Xi-tower A, 401, Yangcheon-ro, Gangseo-Gu, Seoul 07528, Korea
Tel : [phone]
Singapore Mitsubishi Electric Asia Pte. Ltd.
307 Alexandra Road, Mitsubishi Electric Building, Singapore 159943
Tel : [phone]
Thailand Mitsubishi Electric Factory Automation (Thailand) Co., Ltd.
True Digital Park Building Sukhumvit 101 Sukhumvit Road, Bang Chak, Prakanong, Bangkok,
Thailand
Tel : [phone]
Indonesia PT. Mitsubishi Electric Indonesia
Gedung Jaya 8th Floor, JL. MH. Thamrin No.12, Jakarta Pusat 10340, Indonesia
Tel : [phone]
Vietnam Mitsubishi Electric Vietnam Company Limited
11th & 12th Floor, Viettel Tower B, 285 Cach Mang Thang 8 Street, Ward 12, District 10, Ho Chi
Minh City, Vietnam
Tel : [phone]
India Mitsubishi Electric India Pvt. Ltd. Pune Branch
Emerald House, EL-3, J Block, M.I.D.C., Bhosari, Pune - 411026, Maharashtra, India
Tel : [phone]
Australia Mitsubishi Electric Australia Pty. Ltd.
348 Victoria Road, P.O. Box 11, Rydalmere, N.S.W 2116, Australia
Tel : [phone]
Newpublication, effective March 2022.
Specificationsare subject to change without notice.
L(NA)03093ENG-F 2203<MEE>
mono

A - 1
SAFETY INSTRUCTIONS
Please read the instructions carefully before using the equipment.
To ensure correct usage of the equipment, make sure to read through this Replacement Manual, the
Instruction Manual, the Installation Guide, and the Appended Documents carefully before attempting to install,
operate, maintain, or inspect the equipment. Do not use the equipment until you have a full knowledge of the
equipment, safety information and instructions.
In this Replacement Manual, the safety instruction levels are classified under "WARNING" and "CAUTION".
WARNING Indicates that incorrect handling may cause hazardous conditions,
resulting in death or severe injury.
CAUTION Indicates that incorrect handling may cause hazardous conditions,
resulting in medium or slight injury to personnel or may cause physical
damage.
Note that the CAUTION level may lead to a serious consequence according to conditions.
Please follow the instructions of both levels because they are important to personnel safety.
What must not be done and what must be done are indicated by the following diagrammatic symbols.
Indicates prohibition (what must not be done). For example, "No Fire" is indicated by .
Indicates obligation (what must be done). For example, grounding is indicated by .
In this Replacement Manual, instructions of a lower level than the above, such as those that do not cause
physical damage or instructions for other functions, are classified under "POINT".
After reading this Instruction Manual, keep it accessible to the operator.

A - 2
1. To prevent electric shock, note the following
WARNING
Before wiring or inspection, turn off the power and wait for 15 minutes or more (when 30 kW or more is
used, 20 minutes or more) until the charge lamp turns off. Then, confirm that the voltage between P+ (P)
and N- (N) (when 30 kW or more is used, L+ and L-) 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. Doing so 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 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 a fire.
Be sure to connect a magnetic contactor between the power supply and the main circuit power supply
(L1/L2/L3) of the servo amplifier, in order to configure a circuit that shuts 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 servo amplifier malfunctions.
When using the regenerative resistor, switch power off with the alarm signal. Not doing so may cause
smoke and fire when a regenerative transistor malfunctions or the like may overheat the regenerative
resistor.
Provide adequate protection to prevent screws and other conductive matter, oil and other combustible
matter from entering the servo amplifier and servo motor.
Always connect one no-fuse breaker or one fuse for each servo amplifier between the power supply and
the main circuit power supply (L1/L2/L3) of the servo amplifier (including the converter unit) in order to
configure a power supply shut-off on the side of the servo amplifier's power supply. If a no-fuse breaker or
fuse is not connected, continuous flow of a large current may cause smoke and fire when the servo
amplifier malfunctions.

A - 3
3. Injury prevention
CAUTION
Only the voltage specified in the Instruction Manual should be applied to each terminal. Otherwise, a
burst, damage, etc. may occur.
The cables must be connected to the correct terminals. Otherwise, a burst, damage, etc. may occur.
Ensure that the 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 avoid accidentally touching the
parts (cables, etc.) by hand.
During operation, never touch the rotor of the servo motor. Otherwise, it may cause injury.
4. Additional instructions
The following instructions should also be fully noted. Incorrect handling may cause a malfunction, injury,
electric shock, fire, etc.
(1) Transportation/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.
Secure the prescribed distance between the servo amplifier and the inner surface of the cabinet or other
devices.
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.
Item Environment
Ambient
temperature
Operation 0 ˚C to 55 ˚C (non-freezing)
Storage -20 ˚C to 65 ˚C (non-freezing)
Ambient
humidity
Operation 90 %RH or less (non-condensing)
Storage
Ambience Indoors (no direct sunlight) and free from corrosive gas, flammable gas, oil mist, dust, and dirt
Altitude 1000 m or less above sea level
Vibration resistance 5.9 m/s2or less at 10 to 55 Hz (directions of X, Y, Z axes)
Contact your local sales if the product has been stored for an extended period of time.
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 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.

A - 4
(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 (optional FR-BIF) on the output side of
the servo amplifier.
Because installation of these items may cause the servo motor to malfunction, connect the wires to the
correct phase terminals (U/V/W) of the servo amplifier and servo motor power supply.
Directly connect the servo amplifier power output (U/V/W) to the servo motor power input (U/V/W). Do not
let a magnetic contactor, etc. intervene. Otherwise, it may cause a malfunction.
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.
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.
To avoid a malfunction, do not connect the U, V, W, and CN2 phase terminals of the servo amplifier to the
servo motor of an incorrect axis.
Configure a circuit to turn off EM2 or EM1 when the main circuit power is turned off to prevent an
unexpected restart of the servo amplifier.
(3) Trial run/adjustment
CAUTION
Before operation, check the parameter settings. Improper settings may cause some machines to operate
unexpectedly.
Never perform extreme adjustment or changes to the parameters; otherwise, the operation may become
unstable.
Keep away from moving parts in a servo-on state.
RA
RA
Servo amplifier Servo amplifier
DOCOM
Control output
signal
DOCOM
Control output
signal
24 V DC24 V DC
For sink output
interface
For source output
interface
U
M
V
W
U
V
W
U
M
V
W
U
V
W
Servo amplifier Servo motor Servo amplifier Servo motor

A - 5
(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.
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.
The effect of electromagnetic interference must be reduced by using a noise filter or by other means.
Electromagnetic interference may be given to the electronic equipment used near the servo amplifier.
Burning or disassembling a servo amplifier may generate toxic gases. 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
Ensure safety by confirming the power off, etc. before performing corrective actions. Otherwise, it may
cause an accident.
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 by an external EMG stop switch.
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.
B
U
Contacts must be opened with the ALM (malfunction)
off or the MBR (electromagnetic brake interlock) off.
Servo motor
Contacts must be opened with
the EMG stop switch.
Electromagnetic
brake
RA
24 V DC

A - 6
(6) Maintenance, inspection and parts replacement
CAUTION
Make sure that the emergency stop circuit operates properly such that an operation can be stopped
immediately and a power is shut off by the emergency stop switch.
It is recommended that the servo amplifier be replaced every 10 years when it is used in general
environment.
When using a servo amplifier whose power has not been turned on for a long time, contact your local
sales office.
(7) General precautions
To illustrate details, the equipment in the diagrams of this Replacement 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 Instruction Manual.

A - 7
Disposal of Waste
When disposing of this product, the following two laws are applicable, and it is necessary to consider each
law. In addition, because the following laws are effective only in Japan, local laws have priority outside Japan
(overseas). We ask that the local laws be displayed on the final products or that a notice be issued as
necessary.
1. Requirements of the Act on the Promotion of Effective Utilization of Resources
(Commonly known as: the Law for Promotion of Effective Utilization of Resources
Promotion Law)
(1) Please recycle this product whenever possible when it becomes unnecessary.
(2) It is recommended that this product be divided as necessary and sold to appropriate purchasers, as
recycled resources are usually divided into iron, electrical parts, and so on, which are then sold to
scrap processors.
2. Requirements of the Act on Waste Disposal & Cleaning (Commonly known as: The
Waste Disposal Treatment Cleaning Act)
(1) It is recommended to decrease waste through the sale of recyclables or through any other means as
shown in the preceding Paragraph 1.
(2) In case the unnecessary products cannot be sold and require disposal, such item falls under
Industrial waste in the above act.
(3) It is required that industrial waste be properly dealt with, including manifest management, by commissioning the
disposal to an industrial waste disposal contractor licensed under the act.
(4) Please dispose of batteries (primary batteries) used in servo amplifiers according to local regulations.
Measures against servo amplifier harmonics
This servo amplifier applies to "Harmonics control guidelines for customers receiving high voltage or special
high voltage power" (published by current Ministry of Economy, Trade and Industry). Consumers subject to
this guideline must check if a harmonic suppression measure is necessary, and measures must be enforced
when the limit level is exceeded.
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 condition in the absolute position detection system
STO function of the servo amplifier
Refer to the applicable "Servo Amplifier Instruction Manual" when using the STO function of the servo
amplifier.

A - 8
Dealing with overseas standards
Refer to the following relevant manuals concerning dealing with overseas standards.
«About the manual»
This Replacement Manual and the following Instruction Manuals are necessary when using this servo for
the first time. Ensure to prepare them to use the servo safely.
Relevant manuals
Manual name Manual number
MELSERVO-J4 Series Instructions and Cautions for Safe Use of AC Servos
(Packed with the servo amplifier)
IB(NA)0300175
MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting Edition) SH(NA)030108
MELSERVO Servo Motor Instruction Manual (Vol. 3) (Note 1) SH(NA)030099
MELSERVO Linear Servo Motor Instruction Manual (Note 2) SH(NA)030095
MELSERVO Direct Drive Motor Instruction Manual (Note 3) SH(NA)030097
MELSERVO Linear Encoder Instruction Manual (Note 2, 4) SH(NA)030096
EMC Installation Guidelines IB(NA)67303
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.
«Cables used for wiring»
The wiring cables mentioned in this Replacement Manual are selected based on an 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]
«Display»
The following abbreviations are used for the model names of the servo amplifiers in this Replacement
Manual.
[J2S-A]: MR-J2S-_A_
[J2S-B]: MR-J2S-_B_
[J2S-CP]: MR-J2S-_CP_
[J2S-CL]: MR-J2S-_CL_
[J2M-A]: MR-J2M-_A
[J2M-B]: MR-J2M-_B
[J4-A]: MR-J4-_A_
[J4-B]: MR-J4-_B_
Parameter No._ _: [Pr. _ _ ]

1
CONTENTS
Part 1: Summary of MR-J2S/MR-J2M Replacement 1-1 to 1-14
1. SUMMARY OF MR-J2S/MR-J2M REPLACEMENT............................................................................. 1-2
2. MAJOR REPLACEMENT TARGET MODEL........................................................................................ 1-2
2.1 Servo Amplifier Replacement Target Model.................................................................................. 1-2
2.2 Servo Motor Replacement Target Model....................................................................................... 1-2
3. FLOW OF REPLACEMENT ................................................................................................................. 1-3
3.1 Summary........................................................................................................................................ 1-3
3.2 Flow of Review on Replacement ................................................................................................... 1-3
3.3 Review on Replacement................................................................................................................ 1-7
3.3.1 Checking the system prior to replacement ........................................................................... 1-7
3.3.2 Determination of base replacement model........................................................................... 1-8
3.3.3 Mounting compatibility check.............................................................................................. 1-12
3.3.4 Detailed review on replacement model .............................................................................. 1-12
3.3.5 Peripheral equipment check ............................................................................................... 1-12
3.3.6 Startup procedure check..................................................................................................... 1-12
4. RELATED MATERIALS...................................................................................................................... 1-12
4.1 Catalog......................................................................................................................................... 1-12
4.2 Instruction Manual ....................................................................................................................... 1-12
4.3 Replacement Manual................................................................................................................... 1-13
4.4 Renewal Tool............................................................................................................................... 1-13
4.5 Replacement Tool for Replacing MR-J2S series with MR-J4 series........................................... 1-13
4.6 MITSUBISHI ELECTRIC FA Global Website .............................................................................. 1-13
Part 2: Review on Replacement of MR-J2S-_A_ with MR-J4-_A_ 2-1 to 2-46
1. SUMMARY............................................................................................................................................ 2-2
2. CASE STUDY ON REPLACEMENT OF MR-J2S-_A_......................................................................... 2-2
2.1 Review on Replacement Method................................................................................................... 2-2
2.2 Replacement Method..................................................................................................................... 2-2
3. DIFFERENCES BETWEEN MR-J2S-_A_ AND MR-J4-_A_................................................................ 2-4
3.1 Function Comparison Table........................................................................................................... 2-4
3.2 Function List .................................................................................................................................. 2-5
3.3 Comparison of Standard Connection Diagrams............................................................................ 2-6
3.4 List of Corresponding Connectors and Terminal Blocks ............................................................... 2-8
3.5 Comparison of Peripheral Equipment.......................................................................................... 2-13
3.6 Comparison of Parameters.......................................................................................................... 2-14
3.6.1 Setting requisite parameters upon replacement................................................................. 2-14
3.6.2 Parameter comparison list .................................................................................................. 2-16
3.6.3 Comparison of parameter details........................................................................................ 2-19
3.7 Important Points for Replacement (Command Pulse Logic Settings) ......................................... 2-45
Part 3: Review on Replacement of MR-J2S-_B_ with MR-J4-_B_ 3-1 to 3-32
1. SUMMARY............................................................................................................................................ 3-2
2. CASE STUDY ON REPLACEMENT OF MR-J2S-_B_......................................................................... 3-3
2.1 Review on Replacement Method................................................................................................... 3-3
2.2 Replacement Method..................................................................................................................... 3-4
3. DIFFERENCES BETWEEN MR-J2S-_B_ AND MR-J4-_B_................................................................ 3-7
3.1 Function Comparison Table........................................................................................................... 3-7
3.2 Function List .................................................................................................................................. 3-7

2
3.3 Comparison of Networks ............................................................................................................... 3-8
3.3.1 Comparison of servo system network specifications............................................................ 3-8
3.4 Comparison of Standard Connection Diagrams.......................................................................... 3-10
3.5 List of Corresponding Connectors and Terminal Blocks ............................................................. 3-11
3.6 Comparison of Peripheral Equipment.......................................................................................... 3-14
3.7 Comparison of Parameters.......................................................................................................... 3-15
3.7.1 Setting requisite parameters upon replacement................................................................. 3-16
3.7.2 Parameter comparison list .................................................................................................. 3-17
3.7.3 Comparison of parameter details........................................................................................ 3-19
3.8 Important Points for Replacement ............................................................................................... 3-31
Part 4: Review on Replacement of MR-J2S-_CP_/CL_ with MR-J4-_A_-RJ 4-1 to 4-52
1. SUMMARY............................................................................................................................................ 4-2
2. CASE STUDY ON REPLACEMENT OF MR-J2S-_CP_/CL_ .............................................................. 4-2
2.1 Consideration of Replacement Method ......................................................................................... 4-2
2.2 Replacement Method..................................................................................................................... 4-2
3. DIFFERENCES..................................................................................................................................... 4-4
3.1 Function Comparison Table........................................................................................................... 4-4
3.2 Function List .................................................................................................................................. 4-7
3.3 Comparison of Standard Connection Diagrams............................................................................ 4-9
3.4 List of Corresponding Connectors and Terminal Blocks ............................................................. 4-11
3.5 Comparison of Peripheral Equipment.......................................................................................... 4-14
3.6 Comparison of Parameters.......................................................................................................... 4-15
3.6.1 Setting requisite parameters upon replacement................................................................. 4-15
3.6.2 Parameter comparison list .................................................................................................. 4-17
3.6.3 Comparison of parameter details........................................................................................ 4-20
3.7 Comparison of Communication Commands................................................................................ 4-40
Part 5: Review on Replacement of MR-J2S-30 kW or Higher Capacity Models with MR-J4-DU_ 5-1 to 5-58
1. FUNCTIONS AND CONFIGURATION ................................................................................................. 5-2
1.1 Differences Between MR-J2S-30 kW or Higher Capacity Models and MR-J4-DU_ ..................... 5-2
1.2 Combination of Converter Unit, Drive Unit, and Servo Motor........................................................ 5-3
1.3 Configuration with Peripheral Equipment ...................................................................................... 5-4
1.4 Installation...................................................................................................................................... 5-6
1.5 Magnetic Contactor Control Connector (CNP1) [Exclusively for MR-J4-DU_].............................. 5-8
2. SIGNALS AND WIRING ..................................................................................................................... 5-10
2.1 Comparison of Standard Connection Diagrams.......................................................................... 5-10
2.2 Power-on Sequence .................................................................................................................... 5-15
2.3 List of Corresponding Connectors and Terminal Blocks ............................................................. 5-20
3. PARAMETERS ................................................................................................................................... 5-25
3.1 Comparison of Parameters.......................................................................................................... 5-25
4. CHARACTERISTICS.......................................................................................................................... 5-30
4.1 Capacity of Power Source Facility and Generation Loss ............................................................ 5-30
4.2 Inrush Current When Turning On the Main Circuit/Control Circuit Power Supply....................... 5-31
5. OPTIONS AND PERIPHERAL EQUIPMENT..................................................................................... 5-32
5.1 Comparison Table of Cable Option Combinations ...................................................................... 5-32
5.1.1 MR-J3CDL05M (0.5 m) Protection Coordination Cable ..................................................... 5-32
5.2 Wire Selection Example............................................................................................................... 5-33
5.2.1 MR-J2S-series power supply wire size............................................................................... 5-34
5.2.2 MR-J4-series, power supply wire size ................................................................................ 5-35

3
5.3 Selection of No-Fuse Breakers, Fuses, and Magnetic Contactors (example) ............................ 5-37
5.3.1 MR-J2S-series, no-fuse breakers and magnetic contactors (recommended).................... 5-37
5.3.2 MR-J4-series, no-fuse breakers, fuses, and magnetic contactors (recommended)........... 5-37
5.4 FR-BU2-(H) Brake Unit................................................................................................................ 5-39
5.4.1 Selection ............................................................................................................................. 5-39
5.4.2 Parameter setting of brake units......................................................................................... 5-40
5.4.3 Connection example ........................................................................................................... 5-40
5.4.4 Dimensions ......................................................................................................................... 5-56
5.5 Comparison of Peripheral Equipment.......................................................................................... 5-57
Part 6: Review on Replacement of MR-J2M with MR-J4 6-1 to 6-20
1. SUMMARY............................................................................................................................................ 6-2
2. CASE STUDY ON REPLACEMENT OF MR-J2M................................................................................ 6-2
2.1 Replacement Method..................................................................................................................... 6-2
2.2 Equipment Configuration ............................................................................................................... 6-2
3. DIFFERENCES BETWEEN MR-J2M-A AND MR-J4-_A_ ................................................................... 6-3
3.1 Function Comparison Table........................................................................................................... 6-3
3.1.1 General ................................................................................................................................. 6-3
3.2 Comparison of Standard Connection Diagrams............................................................................ 6-4
3.3 List of Corresponding Connectors and Terminal Blocks ............................................................... 6-5
3.4 Comparison of Peripheral Equipment............................................................................................ 6-8
3.5 Comparison of Parameters............................................................................................................ 6-8
3.5.1 Parameter comparison list .................................................................................................... 6-8
4. DIFFERENCES BETWEEN MR-J2M-B AND MR-J4-_B_ ................................................................. 6-11
4.1 Review on Replacement Method................................................................................................. 6-11
4.2 Replacement Method................................................................................................................... 6-12
4.3 Function Comparison Table......................................................................................................... 6-13
4.4 Comparison of Standard Connection Diagrams.......................................................................... 6-14
4.5 List of Corresponding Connectors and Terminal Blocks ............................................................. 6-15
4.6 Comparison of Peripheral Equipment.......................................................................................... 6-16
4.7 Comparison of Parameters.......................................................................................................... 6-17
4.7.1 Parameter comparison list .................................................................................................. 6-17
Part 7: Common Reference Material 7-1 to 7-102
1. SPECIFICATION DIFFERENCES........................................................................................................ 7-2
1.1 Detailed Specification/Function Differences.................................................................................. 7-2
1.2 Servo amplifier............................................................................................................................... 7-6
1.2.1 Main circuit terminal block .................................................................................................... 7-6
1.2.2 Comparison of encoder signals (CN2).................................................................................. 7-9
1.2.3 Dynamic brake: coasting distance ...................................................................................... 7-10
1.2.4 Forced stop deceleration function selection ....................................................................... 7-16
1.2.5 24 V DC power supply for interface: built-in ⇒outside supply requisite .......................... 7-17
1.2.6 Servo setup software: Setup software (SETUP161E) ⇒MR Configurator2 .................... 7-18
1.2.7 Communication I / F: RS-232C ⇒USB ............................................................................ 7-18
1.2.8 Servo amplifier initializing time ........................................................................................... 7-19
1.2.9 The pulse width of the encoder Z-Phase pulse .................................................................. 7-21
2. SERVO AMPLIFIER DIMENSIONS/ATTACHMENT DIFFERENCES ............................................... 7-22
2.1 MR-J2S
⇒MR-J4 Comparison Table of Servo Amplifier Dimensions/
Installation Differences ................................................................................................................ 7-22
2.1.1 General-purpose interface/SSCNET interface 200 V class (22 kW or less) ...................... 7-22

4
2.1.2 General-purpose interface/SSCNET interface 100 V class (0.4 kW or less) ..................... 7-22
2.1.3 Built-in positioning function/program supported 200 V class (7 kW or less) ...................... 7-23
2.1.4 Built-in positioning function/program supported 100 V class (0.4 kW or less) ................... 7-23
2.1.5 General-purpose interface drive unit/SSCNET interface drive unit 200 V class
(30 kW or more) .................................................................................................................. 7-27
2.1.6 General-purpose interface/SSCNET interface 400 V class (22 kW or less) ...................... 7-29
2.1.7 General-purpose interface drive unit/SSCNET interface drive unit 400 V class
(30 kW or more) .................................................................................................................. 7-32
2.2 MR-J2M-_
⇒MR-J4-_ Comparison Table of Servo Amplifier Dimensions/
Installation Differences ................................................................................................................ 7-35
2.3 MR-J2S-_A_/MR-J2S-_CP_/MR-J2S-_CL_ Parameter Diversion Procedure ............................ 7-39
2.3.1 Operation procedure of parameter conversion................................................................... 7-39
2.3.2 MR-J2S-_A_/MR-J2S-_CP_/MR-J2S-_CL_ parameter diversion procedure..................... 7-40
2.3.3 Parameter reading from the servo amplifier MR-J2S-_A_/MR-J2S-_CP_/MR-J2S-_CL_ . 7-41
2.3.4 Converting the parameters of MR-J2S-_A_/MR-J2S-_CP_/MR-J2S-_CL_ and
writing them to the MR-J4-_A_(-RJ) servo amplifier........................................................... 7-43
2.3.5 Conversion rules ................................................................................................................. 7-47
2.4 MR-J2S-_B_ Parameter Diversion Procedure ............................................................................ 7-82
2.4.1 Changing QD75M to QD77MS/LD77MS ............................................................................ 7-83
2.4.2 Changing the motion controller A series/Q17nCPU to Q17nDSCPU/Q170MSCPU(-S1).. 7-86
2.4.3 Conversion rules (MR-J2S-_B_ => MR-J4-_B_) ................................................................ 7-88
3. COMMON POINTS TO NOTE............................................................................................................ 7-94
3.1 Points to Note When Replacing a Battery ................................................................................... 7-94
3.1.1 Servo amplifier battery mounting method ........................................................................... 7-95
3.1.2 Disassembly method........................................................................................................... 7-96
3.1.3 Replacement procedure of MR-BAT6V1SET built-in battery ............................................. 7-96
4. HC-_FS /HA-_FS MOTOR DRIVE...................................................................................................... 7-97
4.1 Parameter setting ........................................................................................................................ 7-97
4.2 Corresponding Software Version................................................................................................. 7-98
4.2.1 Method for checking the software version ........................................................................ 7-101
4.3 Overload protection characteristics
(Important Points for Combining the drive unit MR-J4-DU55K_4 and HA-LFS motor) ............. 7-102
Part 8: Review on Replacement of Motor 8-1 to 8-68
1. SERVO MOTOR REPLACEMENT....................................................................................................... 8-2
1.1 Servo Motor Substitute Model and Compatibility .......................................................................... 8-2
2. COMPARISON OF SERVO MOTOR SPECIFICATIONS.................................................................. 8-12
2.1 Comparison of Servo Motor Mounting Dimensions ..................................................................... 8-12
2.2 Detailed Comparison of Servo Motor Mounting Dimensions....................................................... 8-16
2.3 Comparison of Mounting Dimensions for Geared Servo Motors................................................. 8-18
2.4 Comparison of Geared Servo Motors.......................................................................................... 8-24
2.4.1 Comparison of actual reduction ratios for geared servo motors......................................... 8-24
2.4.2 Comparison of reducer efficiency of geared servo motors ................................................. 8-24
2.5 Comparison of Moment of Inertia ................................................................................................ 8-25
2.6 Comparison of Servo Motor Connector Specifications................................................................ 8-36
2.7 Comparison of Servo Motor Torque Characteristics ................................................................... 8-53
Part 9: Review on Replacement of Optional Peripheral Equipment 9-1 to 9-52
1. COMPARISON TABLE OF REGENERATIVE OPTION COMBINATIONS.......................................... 9-2
1.1 Regenerative Options (200 V/100 V)............................................................................................. 9-3

5
1.1.1 Combination and regenerative power for the MR-J2S series............................................... 9-3
1.1.2 Combination and regenerative power for the MR-J2M series .............................................. 9-3
1.1.3 Combination and regenerative power for MR-J4 series (replacement model) ..................... 9-4
1.2 External Form Comparison............................................................................................................ 9-5
1.3 Regenerative Options (400 V class).............................................................................................. 9-6
1.3.1 Combination and regenerative power for the MR-J2S series............................................... 9-6
1.3.2 Combination and regenerative power for MR-J4 series (replacement model) ..................... 9-7
1.4 External Form Comparison............................................................................................................ 9-8
2. COMPARISON TABLE OF DYNAMIC BRAKE OPTION COMBINATIONS...................................... 9-10
2.1 External Form Comparison.......................................................................................................... 9-11
3. COMPARISON TABLE OF CABLE OPTION COMBINATIONS ........................................................ 9-12
4. POWER SUPPLY WIRE SIZE............................................................................................................ 9-13
4.1 Selection of Power Supply Wire Size (Example)......................................................................... 9-13
4.1.1 MR-J2S-series power supply wire size............................................................................... 9-13
4.1.2 MR-J4-series power supply wire size ................................................................................. 9-15
4.2 Selection Example of Crimp Terminals ....................................................................................... 9-18
4.2.1 MR-J2S-series crimp terminal ............................................................................................ 9-18
4.2.2 MR-J4-series crimp terminal............................................................................................... 9-19
4.3 Selection of Molded-Case Circuit Breaker, Fuse, and Magnetic Contactor (Example)............... 9-20
4.3.1 MR-J2S series, molded-case circuit breakers, fuses, and magnetic contactors................ 9-20
4.3.2 MR-J4 series, molded-case circuit breakers, fuses, and magnetic contactors
(recommended) ................................................................................................................. 9-21
5. BATTERY ........................................................................................................................................... 9-23
5.1 MR-J2S-Series Battery ................................................................................................................ 9-23
5.1.1 Battery replacement procedure .......................................................................................... 9-23
5.2 MR-J2M-Series Battery Unit ........................................................................................................ 9-23
5.3 MR-J4-Series Battery .................................................................................................................. 9-24
5.3.1 Battery replacement procedure .......................................................................................... 9-24
5.3.2 When using the MR-BAT6V1SET battery .......................................................................... 9-25
5.3.3 When using MR-BAT6V1BJ battery for junction battery cable........................................... 9-26
5.3.4 When using MR-BT6VCASE battery case ......................................................................... 9-27
6. EMC FILTER....................................................................................................................................... 9-28
6.1 MR-J2S-Series EMC Filter (200 V/100 V class).......................................................................... 9-28
6.1.1 Dimensions ......................................................................................................................... 9-28
6.2 MR-J2S-Series EMC Filter (400 V class) .................................................................................... 9-30
6.2.1 Dimensions ......................................................................................................................... 9-30
6.3 MR-J4-Series EMC Filter (Recommended) (200 V class)........................................................... 9-32
6.3.1 Connection example ........................................................................................................... 9-32
6.3.2 Dimensions ......................................................................................................................... 9-33
6.4 MR-J4-Series EMC Filter (Recommended) (400 V class)........................................................... 9-35
6.4.1 Combination with the servo amplifier.................................................................................. 9-35
6.4.2 Connection example ........................................................................................................... 9-35
6.4.3 Dimensions ......................................................................................................................... 9-35
7. POWER FACTOR IMPROVING AC REACTOR/POWER FACTOR IMPROVING DC REACTOR... 9-37
7.1 MR-J2S-Series Power Factor Improving AC Reactor (200 V/100 V class)................................. 9-37
7.2 MR-J2S-Series Power Factor Improving DC Reactor (200 V class) ........................................... 9-38
7.3 MR-J2S-Series Power Factor Improving AC Reactor (400 V class) ........................................... 9-39
7.4 MR-J2S-Series Power Factor Improving DC Reactor (400 V class) ........................................... 9-40
7.5 MR-J4-Series Power Factor Improving DC Reactor (200 V class) ............................................. 9-41
7.6 MR-J4-Series Power Factor Improving AC Reactor (200 V/100 V class) ................................... 9-43
7.7 MR-J4-Series Power Factor Improving DC Reactor (400 V class) ............................................. 9-45

6
7.8 MR-J4-Series Power Factor Improving AC Reactor (400 V class).............................................. 9-47
8. SETUP SOFTWARE .......................................................................................................................... 9-49
8.1 MR-J2S Series Setup Software................................................................................................... 9-49
8.1.1 Specifications...................................................................................................................... 9-49
8.2 MR-J4-Series MR Configurator2 ................................................................................................. 9-49
8.2.1 Specifications...................................................................................................................... 9-49
8.3 System Requirements ................................................................................................................. 9-50
8.3.1 Components........................................................................................................................ 9-50
8.3.2 Connection with servo amplifier.......................................................................................... 9-51
8.3.3 Points to note for use of the USB communication function ................................................ 9-51
Part 10: Startup Procedure Manual 10-1 to 10-2
1. STARTUP ........................................................................................................................................... 10-2
1.1 Switching power on for the first time............................................................................................ 10-2
1.1.1 Startup procedure ............................................................................................................... 10-2
Appendix 1 Summary of MR-J4_B_-RJ020 + MR-J4-T20 Appendix 1-1 to Appendix 1-74
1. SUMMARY............................................................................................................................ Appendix 1-2
1.1 Features......................................................................................................................... Appendix 1-2
1.1.1 Servo amplifier connectable to SSCNET compatible controller ........................... Appendix 1-2
1.1.2 SSCNET conversion unit "MR-J4-T20" ................................................................ Appendix 1-3
2. DIFFERENCES BETWEEN MR-J2S-_B_ AND MR-J4-_B_-RJ020 .................................... Appendix 1-4
2.1 Function Comparison Table........................................................................................... Appendix 1-4
3. SYSTEM CONFIGURATION................................................................................................ Appendix 1-6
4. I/O SIGNAL CONNECTION EXAMPLE ............................................................................... Appendix 1-7
5. PARAMETERS ..................................................................................................................... Appendix 1-9
6. RS-232C COMMUNICATION CABLE.................................................................................. Appendix 1-9
7. LIST OF SERVO MOTOR COMBINATIONS AND SOFTWARE VERSIONS ................... Appendix 1-11
8. LIST OF COMBINATIONS AND SOFTWARE VERSIONS FOR SERVO SYSTEM
CONTROLLERS................................................................................................................. Appendix 1-15
9. SAFETY PRECAUTIONS................................................................................................... Appendix 1-17
9.1 Replacing MR-J2S-_B_ Servo Amplifier with MR-J4-_B_-RJ020 Servo Amplifier...... Appendix 1-17
9.2 Differences with the MR-J2S Series............................................................................ Appendix 1-20
10. ALARM ............................................................................................................................. Appendix 1-29
10.1 Alarm/Warning List..................................................................................................... Appendix 1-29
11. DIMENSIONS................................................................................................................... Appendix 1-30
11.1 Comparison of Dimensions........................................................................................ Appendix 1-30
11.2 Dimensions ................................................................................................................ Appendix 1-31
11.2.1 Servo amplifier .................................................................................................. Appendix 1-31
11.2.2 Dimensions (MR-J4-T20).................................................................................. Appendix 1-32
11.2.3 Dimensions (MR-J4-_B_-RJ020 + MR-J4-T20)................................................ Appendix 1-33
12. MODE SWITCHING METHOD ........................................................................................ Appendix 1-41
12.1 Mode Switching Method from J2S Compatibility Mode to J4 Mode .......................... Appendix 1-41
12.2 Mode Switching Method from J4 Mode to J2S Compatibility Mode .......................... Appendix 1-42
13. OPTIONS AND PERIPHERAL EQUIPMENT .................................................................. Appendix 1-43
13.1 Encoder Cable Combination...................................................................................... Appendix 1-43
13.2 Encoder Cable List..................................................................................................... Appendix 1-44
13.3 Details on encoder cable ........................................................................................... Appendix 1-45
13.4 Large Capacity Servo Cable Connector Set.............................................................. Appendix 1-53
13.4.1 Cable connector set combination...................................................................... Appendix 1-53

7
13.4.2 MR-J3CDL05M (0.5 m) Protection Coordination Cable.................................... Appendix 1-54
13.5 Regenerative Options ................................................................................................ Appendix 1-55
13.5.1 Combination and regenerative power............................................................... Appendix 1-55
13.5.2 Regenerative option selection........................................................................... Appendix 1-59
13.5.3 Parameter setting.............................................................................................. Appendix 1-61
13.5.4 Connecting regenerative options ...................................................................... Appendix 1-62
13.6 External Dynamic Brake ............................................................................................ Appendix 1-67
14. SETTING PARAMETERS ADDED ON MR-J4-_B_-RJ020 SERVO AMPLIFIER ........... Appendix 1-68
14.1 Combination of Motion Controller and Peripheral Software ...................................... Appendix 1-68
14.2 Parameter Setting Procedure .................................................................................... Appendix 1-68
14.2.1 For MELSOFT MT Works2 ............................................................................... Appendix 1-68
14.2.2 For MT Developer (software version 00W or later)........................................... Appendix 1-71
14.2.3 For MT Developer (software version 00V or earlier) or SW3RNC-GSV........... Appendix 1-73
Appendix 2 Introduction to Renewal Tool Appendix 2-1 to Appendix 2-110
1. SUMMARY............................................................................................................................ Appendix 2-2
1.1 Compatible Models ........................................................................................................ Appendix 2-2
1.2 Features......................................................................................................................... Appendix 2-2
1.2.1 MR-J2S-_A_ renewal tool/MR-J2S-_CP_ renewal tool ........................................ Appendix 2-3
1.2.2 MR-J2S-_B_ renewal tool..................................................................................... Appendix 2-4
1.3 Renewal Tool Product Names..................................................................................... Appendix 2-12
1.4 Renewal Tool Configuration ........................................................................................ Appendix 2-14
2. RENEWAL TOOL PRODUCT LIST.................................................................................... Appendix 2-16
3. BASIC CONFIGURATION.................................................................................................. Appendix 2-18
3.1 Important Points to Note When Replacing .................................................................. Appendix 2-18
3.2 Selection of Products................................................................................................... Appendix 2-19
3.2.1 Replacement selection flow ................................................................................ Appendix 2-19
4. REPLACMENT COMBINATION LIST ................................................................................ Appendix 2-21
4.1 General-Purpose Interface Replacement Combination List (100 V/200 V Class)....... Appendix 2-21
4.2 SSCNET Interface Replacement Combination List (100 V/200 V Class) ................... Appendix 2-33
4.3 Built-in Positioning Function Replacement Combination List ...................................... Appendix 2-45
4.4 General-Purpose Interface Replacement Combination List (400 V Class) ................. Appendix 2-57
4.5 SSCNET Interface Replacement Combination List (400 V Class).............................. Appendix 2-61
5. RENEWAL TOOL CONNECTION DIAGRAM .................................................................... Appendix 2-66
5.1 SC-J2SJ4(CP)KT02K to 3K......................................................................................... Appendix 2-66
5.2 SC-J2S(CP)J4KT5K .................................................................................................... Appendix 2-68
5.3 SC-J2S(CP)J4KT7K .................................................................................................... Appendix 2-70
5.4 SC-J2SJ4KT15K, 22K ................................................................................................. Appendix 2-72
5.5 SC-J2SBJ4KT02K to 3K.............................................................................................. Appendix 2-74
5.6 SC-J2SBJ4KT5K ......................................................................................................... Appendix 2-76
5.7 SC-J2SBJ4KT7K ......................................................................................................... Appendix 2-78
5.8 SC-J2SBJ4KT15K, 22K............................................................................................... Appendix 2-80
6. SPECIFICATIONS.............................................................................................................. Appendix 2-82
6.1 Standard Specifications ............................................................................................... Appendix 2-82
6.2 Terminal Block Specifications...................................................................................... Appendix 2-82
6.3 Recommended 24 V DC Power Supply Specifications for Interface........................... Appendix 2-83
7. PARAMETER SETTING..................................................................................................... Appendix 2-84
7.1 List of General-Purpose Interface Setting Requisite Parameters................................ Appendix 2-84
7.2 List of SSCNET Interface Setting Requisite Parameters ............................................ Appendix 2-87
7.3 List of Built-in Positioning Function Setting Requisite Parameters.............................. Appendix 2-87
8. DIMENSIONS ..................................................................................................................... Appendix 2-90

8
8.1 Renewal Kit.................................................................................................................. Appendix 2-90
8.2 Conversion Cable ...................................................................................................... Appendix 2-107
8.2.1 Conversion cable on the servo amplifier side ................................................... Appendix 2-107
8.2.2 Power supply conversion cable on the motor side ........................................... Appendix 2-109
8.2.3 Encoder conversion cable on the motor side ................................................... Appendix 2-110
8.2.4 Conversion cable for the cooling fan on the motor side ................................... Appendix 2-110

Part 1: Summary of MR-J2S/MR-J2M Replacement
1 - 1
Part 1
Summary of MR-J2S/
MR-J2M Replacement

Part 1: Summary of MR-J2S/MR-J2M Replacement
1 - 2
This document describes the review items for replacing MR-J2S with MR-J4 and MR-J2M with MR-J4. Some
equipment may require review on items not described in this document. Please review those items after viewing the
Instruction Manual and the catalogs.
Part 1: Summary of MR-J2S/MR-J2M Replacement
1. SUMMARY OF MR-J2S/MR-J2M REPLACEMENT
In this document, the flow when replacing a system using the MELSERVO "MR-J2S/MR-J2M series" with the
"MRJ4 series" is explained.
After deciding the replacement strategy (simultaneous replacement, partial replacement of servo
amplifier/servo motor/controller), please proceed with replacement by referring to the corresponding parts of
this manual and the manual for each model.
2. MAJOR REPLACEMENT TARGET MODEL
2.1 Servo Amplifier Replacement Target Model
Series Servo amplifier model Series Servo amplifier model
MR-J2S
Series
MR-J2S-_A_
→MR-J4
Series
MR-J4-_A_
MR-J2S-_B_ MR-J4-_B_
MR-J2S-_CP_ MR-J4-_A_-RJ
MR-J2S-_CL_
MR-J2M
Series
MR-J2M-P8A+
MR-J2M-_DU MR-J4-_A_
MR-J2M-P8B+
MR-J2M-_DU MR-J4-_B_
2.2 Servo Motor Replacement Target Model
Series Servo motor model Series Servo motor model
Small
capacity
Low inertia
HC-_FS
Series
HC-KFS_
→HG
Series
HG-KR_
Ultra-low
inertia HC-MFS_ HG-MR_
Flat HC-UFS_ HG-KR_
Medium
capacity
medium
inertia HC-SFS_ HG-SR_
Low inertia HC-LFS_ HG-JR_
Ultra-low
inertia HC-RFS_ HG-RR_
Flat HC-UFS_ HG-UR_
Large
capacity Low inertia HA-_FS
Series HA-LFS_ HG-JR_
Note. For details, refer to "Part 8: Review on Replacement of Motor".
POINT
This document uses the terms "MR-J2S-compatible motor" and "MR-J2-
compatible motor" to distinguish the following motors.
MR-J2S-compatible motor: HC-_FS motor (series), HA-_FS motor (series)
MR-J2-compatible motor: HC-_F motor (series), HA-_F motor (series)

Part 1: Summary of MR-J2S/MR-J2M Replacement
1 - 3
3. FLOW OF REPLACEMENT
3.1 Summary
This section describes the flow of replacement when replacing a system using the MR-J2S/MR-J2M series
with a system using the MR-J4 series.
3.2 Flow of Review on Replacement
・・・Check the components of the system prior to replacement.
: Refer to "3.3.1 Checking the system prior to replacement" in this document.
・・・Determine the base replacement model for the servo amplifier/servo motor model
used for the system prior to replacement.
: Refer to "3.3.2 Determination of base replacement model" in this document.
・・・Determine the base replacement model and check the impact according to the
"specification/function" of the replacement model.
: Refer to "Part 7:Common Reference Material" in this document.
・・・Check the compatibility and the attachment differences in the "Mounting
compatibility" items in the list of base replacement models.
: Refer to "Part 7: Common Reference Material, 2. SERVO AMPLIFIER
DIMENSIONS / INSTALLATION DIFFERENCES", and "Part 8: Replacement of
Motor" in this document.
・・・Determine the replacement strategy and perform detailed designing.
: Refer to "Part 2: Review on Replacement of MR-J2S-_A_ with MR-J4-_A_",
"Part 3: Review on Replacement of MR-J2S-_B_ with MR-J4-_B_"
"Part 4: Replacement of MR-J2S-_CP_/CL_ with MR-J4-_A_RJ"
"Part 5: Review on Replacement of MR-J2S-30 kW or Higher Capacity
Models with MR-J4-DU_"
"Part 6: Review on Replacement of MR-J2M with MR-J4" and
"Part 8: Review on Replacement of Motor" in this document.
・・・Check the peripheral equipment that comes with the replacement.
: Refer to "Part 9: Review on Replacement of Optional Peripheral Equipment" in this
document.
・・・Check the startup procedure.
: Refer to "Part 10: Startup Procedure Manual" in this document.
Peripheral equipment check
Startup procedure check
Checking the system prior to replacement
Determination of base replacement model
Detailed specifications/functions difference check
Mounting compatibility check
Detailed review on replacement model