Part 1: Summary of MR-J3/MR-J3W Replacement
1 - 7
3.1.4 Changes from MR-J3W series to MR-J4 series
POINT
The following table summarizes the changes from MR-J3W series to MR-J4
series. For details, refer to the reference document/items.
Changes Check
items
Impact
Reference
document/items
Servo
amplifier
Connector
Connector shape, pin arrangement, signal abbreviation,
and location are different.
Part 4, Section 3.6
Part 6, Section 1.2.2
Parameter
For SSCNETIII interface, the MR-J3 compatibility mode is
available with the MR-J4 series and parameters do not
need to be changed.
Part 4, Section 3.7
Dimensions
MR-J3W-22B/-44B
⇒
MR-J4W2-22B/-44B
: The dimensions are the same. The number of mounting
screws is different.
MR-J3W-77B/-1010B
⇒
MR-J4W2-77B/-1010B
: Note that the positions (clearances) and the number of
mounting screws have been changed to reduce the size
of external dimensions.
MR-J3W-0303BN6
⇒
MR-J4W2-0303B6
: The dimensions, the clearances and number of mounting
screw are the same.
Part 6, Section 2.1.5
Dynamic brake coasting
distance
The servo motor has a different dynamic brake coasting
distance.
Part 6, Section 1.2.3
Forced stop deceleration
For MR-J4, in the shipping status, the servo motor
decelerates to stop during a forced stop or when an alarm
has occurred. The stop method for MR-J4 is different from
the method of when an emergency stop or a forced stop of
MR-J3W is enabled.
Part 6, Section 1.2.4
MR-J4W2-_B_
Servo Amplifier
Instruction Manual
Initializing time
The time it takes to reach servo-on from power-on is
different.
Part 6, Section 1.2.6
Options and
peripheral
equipment
Molded-case circuit breaker
Fuse
Those for MR-J3W may not be usable. Select those for
MR-J4.
Part 8, Section 4.3
Magnetic contactor
Those for MR-J3W may not be usable. Select those for
MR-J4.
Part 8, Section 4.3
Power factor improving AC
reactor
Those for MR-J3W may not be usable. FR-HAL is
recommended.
Part 8, Section 7.2
Part 8, Section 7.5
Regenerative option
Some regenerative options cannot be used for MR-J4.
Part 8, Chapter 1
Setup software (SETUP221E)
Setup software (SETUP221E) cannot be used for MR-J4.
Use MR Configurator2.
"MR Configurator2" can also be used for MR-J4 series
and MR-J3W series.
Part 8, Chapter 8
Battery
Use MR-BT6VCASE, MR-BAT6V1 for MR-J4.
Part 8, Chapter 5
Encoder cable
MR-J3W cables can be used as they are.
Part 6, Section 1.2.2
Part 8, Chapter 3
Wire
An HIV wire is recommended for MR-J4.
Part 8, Chapter 4
EMC filter
Some EMC filters cannot be used for MR-J4.
Part 8, Chapter 6
Summary of Contents for Melservo MR-J3-100B
Page 17: ...8 MEMO ...
Page 18: ...Part 1 Summary of MR J3 MR J3W Replacement 1 1 Part 1 Summary of MR J3 MR J3W Replacement ...
Page 145: ...Part 3 Review on Replacement of MR J3 _B_ with MR J4 _B_ 3 48 MEMO ...
Page 195: ...Part 4 Replacement of MR J3W _B with MR J4W2 _B 4 50 MEMO ...
Page 277: ...Part 5 Review on Replacement of MR J3 DU_ with MR J4 DU_ 5 82 MEMO ...
Page 278: ...Part 6 Common Reference Material 6 1 Part 6 Common Reference Material ...
Page 418: ...Part 7 Review on Replacement of Motor 7 1 Part 7 Review on Replacement of Motor ...
Page 564: ...Part 9 Startup Procedure Manual 9 1 Part 9 Startup Procedure Manual ...
Page 567: ...Part 9 Startup Procedure Manual 9 4 MEMO ...
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