Mitsubishi Electric MELSERVO-J3 Series Handbook page 213

Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
(b) MR-J3-DU_B/MR-J4-DU_B
MR-J3-DU_B
Converter unit
(Note 6)
MCCB
MC
3-phase
200 to 230 V AC
50/60 Hz
(Note 4)
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
R1 S1 R1
(Note 3)
Drive unit Servo motor
Forced stop
trouble thermal relay
RA1 RA2 RA3 RA4
Converter Controller
unit trouble forced stop
Note 1. For the MR-RB137. For the MR-RB137, three units are used as one set
(permissible wattage: 3900 W).
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. Keep the wiring connector for the magnetic contactor connected to CNP1
of the converter unit. Unconnected status may cause an electric shock.
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.
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.
(Note 7)
Drive unit
External
TE2-1
TE2-2
dynamic brake
L+
L+
(optional)
L-
L-
L
1
CN40 CN40A
L
2
MR-J3CDL05M
L
U
3 cable
CN40B U
Termination
L V
11
connector V
L MR-J3-TM W
21
W
(Option)
Encoder cable
CNP1 CN1
CN2
1 1
DICOM
MCCB
24 V DC
BU
2 5
DOCOM
(Note 5)
BV
Power
6 DICOM
supply
BW
(Note 2)
2 ALM
RA 2
P
1
7 EM1
P
2
OHS1
(Note 3)
9
DOCOM
C
CN3
C P C
10
DICOM
G4 G3 G4
15 ALM
R A1
Regenerative
24 V DC
option (Note 1)
5 DICOM
Cooling fan
3
DOCOM
S1 R1 S1
20 EM1
(Note 3)
SD
L Plate
11
L
21
24 V DC
Operation
RA 3
-ready
(EM1)
OFF
ON
MC
MC
SK
Converter unit
Drive unit
malfunction
RA1
Servo motor
M
MCCB
3-phase
200 V AC to
240 V AC
Encoder
Cooling fan
(Note 10)
OHS2
Servo
motor
thermal
relay
Power factor improving
DC reactor (optional)
24 V DC
G3
Regenerative
Cooling fan
R1
Note 1. This is for MR-RB137. For the MR-RB137, 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. Always connect the magnetic contactor wiring connector to CNP1 of the
converter unit. If the connector is not connected, an electric shock may
occur.
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 circuit power 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, refer to chapter 6. 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. 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 - 18
MR-J4-DU_B
Optional Operation ready
Emergency stop
malfunction thermal
switch
OFF
RA2 RA3
Converter unit
Drive unit
TE2-2
TE2-1
(Note 5)
L+
L+
MC
L1 L-
L-
L2 CN40 CN40A
MR-J3CDL05M
L3
cable
L11
(Note 12)
L21
(Note 10)
(Note 3)
CNP1 CN1
(Note 12)
CN2
MC1 1 1
DICOM
24 V DC
5
MC2 2
DOCOM
6
DICOM
(Note 9)
(Note 2) 2 ALM
RA3 RA2
P1
7 EM1
P2
CN8
9
DOCOM
C
CN3
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
S1 R1 S1 R1 S1
L11
Plate
L21
ON
MC
MC
SK
(Note 7, 14)
External
dynamic brake
(optional)
Servo motor
(Note 13)
U
U
M
V
V
W
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)
10
DICOM
15 ALM
RA1
24 V DC
5
DICOM
3
DOCOM
20 EM2
(Note 6)
SD Main circuit
power supply