Mitsubishi Electric MELSERVO-J3 Series Handbook page 215

Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
(b) MR-J3-DU_B4/MR-J4-DU_B4
MR-J3-DU_B4
(Note 7)
MCCB MC
3-phase
380 to 480 V AC
50/60 Hz
(Note 5)
MC1
MC2
Power factor improving
DC reactor (Option)
P C P
G3 G4 G3
Regenerative Regenerative
option (Note 1) option (Note 1)
Cooling fan Cooling fan
R400 S400 R400 S400
(Note 4)
Stepdown
Drive unit Servo motor Forced stop
transformer
trouble thermal relay
RA1 RA2 RA3 RA4
Converter Controller
unit trouble forced stop
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 turns off the drive unit forced stop (EM1) and
the converter unit forced stop (EM1) at the same time.
4. Stepdown transformer is required for coil voltage of magnetic contactor
more than 200 V class.
5. Keep the wiring connector for the magnetic contactor connected to CNP1
of the converter unit. Unconnected status may cause an electric shock.
6. For specifications of cooling fan power supply, refer to "MR-J3-_B_ Servo
amplifier instruction manual".
7. Be sure to use a magnetic contactor with an operation delay time of 80
ms or less. The operation delay time is the time interval between current
being applied to the coil until closure of contacts.
8. Use an external dynamic brake for the drive unit. Failure to do so will but
cause an accident because the servo motor does not stop immediately
coasts at an emergency stop and such conditions. Ensure the safety in
the entire system.
(Note 6)
Power
supply
Converter unit
Drive unit (Note 8)
External
TE2-2 TE2-1
dynamic brake
L+
L+
(optional)
L-
L L-
1 Servo motor
CN40 CN40A
L
2
MR-J3CDL05M
cable
L U
3
CN40B U
Termination
L V
11
connector V
MR-J3-TM
L W
21
W
(Option)
Encoder cable
CNP1 CN1
CN2
1 1
DICOM
2 5
DOCOM
6
DICOM
Cooling fan
(Note 2) 2 ALM
RA2
P
1
7 EM1
P
2 OHS1
(Note 3)
9
DOCOM
C
CN3
C P C
10
DICOM
G4 G3 G4
15 ALM
RA1
Regenerative
24 V DC
option (Note 1)
5
DICOM
Cooling fan
3
DOCOM
R400 S400
20 EM1
(Note 3)
Plate SD
L
11
L
21
24 V DC
(Note 3)
Operation
RA3
-ready
(EM1)
OFF
ON
MC
MC
SK
MCCB
Drive unit
malfunction
RA1
(Note 3)
Step-down
transformer
MCCB
3-phase
380 V AC to
M
480 V AC
(Note 11)
Encoder
BU
BV
BW
Power factor improving
DC reactor (optional)
OHS2
Servo
motor 24 V DC
thermal
relay
G3
Regenerative
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 7.4" for details.
3. A step-down transformer is required when the coil voltage of the magnetic
contactor is 200 V class.
4. Always connect the magnetic contactor wiring connector to CNP1 of the
converter unit. If the connector is not connected, an electric shock may
occur.
5. For specifications of the cooling fan power supply, refer to "Servo Motor
Instruction Manual (Vol. 3)".
6. 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.
7. To prevent an unexpected restart of the drive unit, configure a circuit to
turn off EM2 in the drive unit when the main circuit power is turned off.
8. 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, refer to chapter 6.
For wiring of the external dynamic brake, refer to "MR-CV_/MR-
CR55K_/MR-J4-DU_(-RJ) instruction manual".
9. For the encoder cable, use of the option cable is recommended. For
selecting cables, refer to "Servo Motor Instruction Manual (Vol. 3)".
10. This diagram shows sink I/O interface. For source I/O interface, refer to
"MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) instruction manual".
11. Install an overcurrent protection device (molded-case circuit breaker or
fuse) to protect the branch circuit. (Refer to section 7.3.)
12. When not using the STO function, attach the short-circuit connector
supplied with the drive unit.
13. 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.
14. For connecting servo motor power wires, refer to "Servo Motor Instruction
Manual (Vol. 3)".
15. For the MR-J4-DU30K_4(-RJ) and MR-J4-DU37K_4(-RJ), the terminal
block is TE2.
16. 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 - 20
MR-J4-DU_B4
Converter unit
Optional Operation ready
Emergency stop
malfunction thermal
switch
OFF
RA2 RA3
Converter unit Drive unit
TE2-2
TE2-1 (Note 15)
(Note 6)
L+
L+
MC
L1 L-
L-
L2 CN40 CN40A
MR-J3CDL05M
L3
cable
L11
(Note 13)
L21
(Note 11)
(Note 4)
CNP1 CN1 (Note 13)
CN2
MC1 1 1
DICOM
24 V DC
MC2 2 5
DOCOM
6
DICOM
(Note 10)
(Note 2)
2 ALM
RA3 RA2
P1
7 EM1
P2
9
DOCOM
C
P C P C P C
G4 G3 G4 G3 G4
(Note 1) (Note 1) (Note 1)
Regenerative Regenerative
option option option
Cooling fan Cooling fan Cooling fan
R400 S400 R400 S400 R400 S400
L11
L21
ON
MC
MC
SK
(Note 8, 16)
External
dynamic brake
(optional)
Servo motor
(Note 14)
U
U
M
V
V
W
W
(Note 9) Encoder cable
MCCB
BU
Encoder
(Note 5)
BV
Power
supply
BW
Cooling fan
CN8
(Note 12)
Short-circuit connector
(packed with the drive unit)
CN3
10
DICOM
ALM
15
RA1
24 V DC
5
DICOM
3
DOCOM
20 EM2
(Note 7)
Plate SD Main circuit
power supply