Changes From Mr-J3W Series To Mr-J4 Series - Mitsubishi Electric MELSERVO-J3 Series Handbook

Part 1: Summary of MR-J3/MR-J3W Replacement

3.1.4 Changes from MR-J3W series to MR-J4 series

Changes Check items
Servo Connector
amplifier
Parameter
Dimensions
Dynamic brake coasting
distance
Forced stop deceleration
Initializing time
Options and Molded-case circuit breaker
peripheral Fuse
equipment
Magnetic contactor
Power factor improving AC
reactor
Regenerative option
Setup software (SETUP221E)
Battery
Encoder cable
Wire
EMC filter
POINT
The following table summarizes the changes from MR-J3W series to MR-J4
series. For details, refer to the reference document/items.
Connector shape, pin arrangement, signal abbreviation,
and location are different.
For SSCNETIII interface, the MR-J3 compatibility mode is
available with the MR-J4 series and parameters do not
need to be changed.
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.
The servo motor has a different dynamic brake coasting
distance.
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.
The time it takes to reach servo-on from power-on is
different.
Those for MR-J3W may not be usable. Select those for
MR-J4.
Those for MR-J3W may not be usable. Select those for
MR-J4.
Those for MR-J3W may not be usable. FR-HAL is
recommended.
Some regenerative options cannot be used for MR-J4.
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.
Use MR-BT6VCASE, MR-BAT6V1 for MR-J4.
MR-J3W cables can be used as they are.
An HIV wire is recommended for MR-J4.
Some EMC filters cannot be used for MR-J4.
Impact
1 - 7
Reference
document/items
Part 4, Section 3.6
Part 6, Section 1.2.2
Part 4, Section 3.7
Part 6, Section 2.1.5
Part 6, Section 1.2.3
Part 6, Section 1.2.4
MR-J4W2-_B_
Servo Amplifier
Instruction Manual
Part 6, Section 1.2.6
Part 8, Section 4.3
Part 8, Section 4.3
Part 8, Section 7.2
Part 8, Section 7.5
Part 8, Chapter 1
Part 8, Chapter 8
Part 8, Chapter 5
Part 6, Section 1.2.2
Part 8, Chapter 3
Part 8, Chapter 4
Part 8, Chapter 6