Mitsubishi Electric MELSERVO-J3 Series Handbook page 209

Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
(2) 400 V class
(a) MR-J3-DU_A4/MR-J4-DU_A4
MR-J3-DU_A4
Converter unit
TE2-2
L+
L-
CN40
(Note 6)
NFB MC
L
1
3-phase
L
380 to 480 V AC
2
50/60 Hz
L
3
CN1
L
11
1
L
21
5
CNP1
MC1 1 6
MC2 2 2
Power factor improving
7
DC reactor (Option)
9
P
1
(Note 2)
P
2
C
P C P C
G3 G4 G3 G4
Regenerative Regenerative
option(Note 1) option(Note 1)
Cooling fan Cooling fan
R400S400 R400S400
(Note 4)
Stepdown
Drive Servo motor Operation
transformer
unit trouble thermal relay -ready
RA1 RA2 RA3 OFF/ON
Emergency stop
Converter
SK
(EMG/EM1)
unit trouble
(Note 3)
Note 1. For the MR-RB138-4. For the MR-RB138-4, three units are used as one
set (permissible wattage: 3900W).
2. When using the Power factor improving DC reactor, disconnect the short
bar across P1 and P2.
3. Make up a sequence that will concurrently turn off the Emergency stop
(EMG) of the drive unit and the Forced stop (EM1) of the converter unit,
and shut off the main circuit power supply by the external sequence.
4. Stepdown transformer is required for coil voltage of magnetic contactor
more than 200V class.
5. For specifications of cooling fan power supply, refer to "MR-J3-_A_ Servo
amplifier instruction manual".
6. Be sure to use a magnetic contactor with an operation delay time of 80ms or
less. The operation delay time is the time interval between current being
applied to the coil until closure of contacts.
7. Use an external dynamic brake for the drive unit. Failure to do so will
cause an accident because the servo motor does not stop immediately
but coasts at an emergency stop and such conditions. Ensure the safety
in the entire system.
(Note 5)
Power
supply
Drive unit
TE2-1
L+
(Note 7)
L-
External
dynamic brake
CN40A
(Option)
MR-J3CDL05M
cable
CN40B
Termination
Servo motor
connector
MR-J3-TM
(Option)
U
U
V
DICOM
V
24 V DC
W
W
DOC OM
Encoder cable
DICOM CN2
Encoder
ALM
RA2
EM1
(Note 3)
Cooling fan
DOC OM
OHS1
P C
CN1
G3 G4
Regenerative
21
DICOM
option(Note 1)
Cooling fan
48 ALM
RA1
R400S400
24 V DC
20
DICOM
46
DOC O M
L
11
42 EMG (Note 3)
L
21
15 SON
Plate SD
MC
24 V DC
RA3
NFB
Drive unit
malfunction
RA1
Resistance regeneration
(Note 3)
Step-down
transformer
M
(Note 5)
MCCB MC
3-phase
380 V AC to
480 V AC
BU
(Note 10) (Note 10)
BV
BW
Power factor improving
DC reactor (optional)
OHS2
Servo RA3
24 V DC
motor
thermal
relay
P C
G3 G4
(Note 1)
Regenerative
option
Cooling fan
R400 S400
Note 1. This is for MR-RB13V-4. For the MR-RB13V-4, three units are used as
one set (permissible regenerative power: 3900 W).
2. P1 and P2 are connected by default. When using the power factor
improving DC reactor, connect P1 and P2 after removing the short bar
across them. Refer to "Part 8: section 7.3" for details.
3. A step-down transformer is required when the coil voltage of the magnetic
contactor is 200 V class.
4. For specifications of the cooling fan power supply, refer to "Servo Motor
Instruction Manual (Vol. 3)".
5. Use a magnetic contactor with an operation delay time (interval between
current being applied to the coil until closure of contacts) of 80 ms or less.
The bus voltage decreases depending on the main circuit voltage and
operation pattern, which may cause the forced stop deceleration to shift to
the dynamic brake deceleration. When dynamic brake deceleration is not
required, slow the time to turn off the magnetic contactor.
6. To prevent an unexpected restart of the drive unit, configure a circuit to
turn off EM2 in the drive unit when the main circuitpower is turned off.
7. Use an external dynamic brake for the drive unit. Failure to do so will
cause an accident because the servo motor does not stop immediately but
coasts at an alarm occurrence for which the servo motor does not
decelerate to stop. Ensure the safety in the entire equipment. For alarms
for which the servo motor does not decelerate to stop and for wiring of the
external dynamic brake, refer to "MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ)
instruction manual".
8. For the encoder cable, use of the option cable is recommended. For
selecting cables, refer to "Servo Motor Instruction Manual (Vol. 3)".
9. This diagram shows sink I/O interface. For source I/O interface, refer to
"MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) instruction manual".
10. Install an overcurrent protection device (molded-case circuit breaker or
fuse) to protect the branch circuit. (Refer to section 7.3.)
11. When not using the STO function, attach the short-circuit connector
supplied with the drive unit.
12. Do not connect the servo motor of a wrong axis to U, V, W, or CN2 of the
drive unit. Otherwise, a malfunction may occur.
13. For connecting servo motor power wires, refer to "Servo Motor Instruction
Manual (Vol. 3)".
14. For the MR-J4-DU30K_4(-RJ) and MR-J4-DU37K_4(-RJ), the terminal
block is TE2.
15. The external dynamic brake cannot be used for compliance with SEMI-F47
standard. Do not assign DB. Failure to do so will cause the drive unit to
become servo-off when an instantaneous power failure occurs.
5 - 14
MR-J4-DU_A4
Converter unit Optional
Emergency stop
Operation ready
thermal
malfunction
switch
OFF/ON
RA3
RA2
converter unit Drive unit
TE2-2
TE2-1 (Note 15)
CNP1
L+
L+
MC1 1
L-
L-
MC2 2
CN40 CN40A
MR-J3CDL05M
cable
U
L1 (Note 12)
V
L2
W
L3
(Note 12)
CN1
CN2
L11 1
DICOM
24 V DC
L21
5
DOCOM
6
DICOM
(Note 9)
(Note 2)
2 ALM
RA2
P1
7 EM1
P2
CN8
9
DOCOM
C
CN1
P C P C
46
DOCOM
G3 G4 G3 G4
(Note 1) (Note 1)
Regenerative 48
Regenerative
option
option
Cooling fan Cooling fan
42
R400 S400 R400 S400
15 SON
21
DICOM
L11
L21
MC
SK
(Note 7, 15)
External
dynamic brake
(optional)
(Note 13) Servo motor
U
M
V
W
(Note 8) Encoder cable
MCCB
BU Encoder
(Note 4)
BV
Power
supply
BW
Cooling fan
(Note 11)
Short-circuit connector
(packed with the drive unit)
24 V DC
ALM
RA1
EM2
(Note 6)
Main circuit power supply
24 V DC