Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 175

Part 5: Review on Replacement of MR-J2S-30 kW or Higher Capacity Models with MR-J4-DU_
(4) SSCNET interface 400 V class
MR-J2S-_KB4
Converter unit
P
N N
CN5
NFB
MC
3-phase L
1
380 to
L
2
480 V AC
50/60 Hz
L
3
CN1
L
11
13
L
21
12
8
3
Power factor improving
DC reactor (Option)
5
P
1
(Note2)
P
2
P C
P C P C
G3 G4 G3 G4
(Note1) (Note1)
Regenerative Regenerative
brake option brake option
Fan Fan
R400 S400 R400S400
Step-
down
Motor thermal
Operation-ready
trans-
relay
ON
EMG OFF
former
(Note3) RA3 RA2
Converter MC
Note 1. For MR-RB138-4. Use three MR-RB138-4s in a set, which
provides permissible regenerative power of 3900 W.
2. When using a power factor improving DC reactor, remove the
short-circuit bar between P1 and P2.
3. Shut off the power supply by using an external sequence when a
servo alarm occurred.
4. Use a step-down transformer when the coil voltage of the
magnetic contactor is 200 V class.
5. Use an MR-J2HBUS_M_ SSCNET cable as a protection
coordination cable.
6. Use an external dynamic brake to this servo amplifier. Without an
external dynamic brake, the servo motor keeps running at an
emergency stop in a free run state, leading to an accident. Take as
many safety measures as possible in the system.
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 section 8.6 for details.
3. A step-down transformer is required when the coil voltage of the magnetic contactor is 200 V class.
4. 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 section "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 5.3.)
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.
17. The converter unit and the drive unit can be connected to the control circuit power supply (L11/L21) by daisy chain. Refer to section 5.2 for the
wire size and the selection of the overcurrent protection device.
NFB
3-phase
380 to 460 V AC
50/60 Hz
Servo amplifier
P P P
N N
Dynamic
CN5A
MR-J2HBUS brake
M cable
CN5B
MR-A-TM
termination
Servo motor
connector
(Option)
U
U
M
V
V
W
W
COM
CN2
VDD
MR-HCN2
ALM RA3 Encoder
SE
Encoder cable
SG
Fan
OSH1
24 V DC
power
supply
RA2
P C
G3 G4
(Note1)
Regenerative
brake option
Fan
R400 S400
L
11
L
21
MC
SK
When magnetic contactor drive output is enabled (factory setting)
Drive unit
malfunction
RA1
(Note 3)
Step-down
transformer
(Note 6)
MCCB MC
3-phase
380 V AC to
480 V AC
BU
BV
(Note 11, 17)
(Note 11, 17)
BW
Power factor improving
OHS2
DC reactor (optional)
Servo motor
thermal relay
RA3
24 V DC
P C
G3 G4
(Note 1)
Regenerative
option
Cooling fan
R400 S400
When magnetic contactor drive output is disabled
Drive unit
malfunction
RA1
(Note 3)
Step-down
transformer
MCCB
3-phase
380 V AC to
480 V AC
(Note 11, 17)
Power factor improving
DC reactor (optional)
24 V DC
5 - 14
MR-J4-DU_B4
Converter unit
Optional
Emergency stop
Operation ready
thermal
malfunction
switch
OFF/ON
RA2 RA3
Resistance regeneration
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 13)
V
L2
W
L3
(Note 13)
CN1
CN2
L11 1
DICOM
24 V DC
L21
5
DOCOM
6
DICOM
(Note 10)
(Note 2)
2 ALM
RA2
P1
7 EM1
P2
CN8
9
DOCOM
C
CN3
P C P C
10
G3 G4 G3 G4
(Note 1)
(Note 1)
Regenerative 15
Regenerative
option
option
Cooling fan Cooling fan
5
R400 S400 R400 S400
3
20
L11
Plate
L21
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, 17)
(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
CN8
9
DOCOM
C
CN3
P C P C P C
G3 G4 G3 G4 G3 G4
(Note 1) (Note 1) (Note 1)
Regenerative Regenerative Regenerative
option option option
Cooling fan Cooling fan Cooling fan
R400 S400 R400 S400 R400 S400
L11
Plate
L21
MC
SK
(Note 8, 16)
External
dynamic brake
(optional)
(Note 14) Servo motor
U
M
V
W
(Note 8) Encoder cable
MCCB
BU
Encoder
(Note 5)
BV
Power
supply
BW
Cooling fan
(Note 12)
Short-circuit connector
(packed with the drive unit)
DICOM
ALM
RA1
24 V DC
DICOM
DOCOM
EM2
(Note 7)
Main circuit
SD
power supply
ON
MC
MC
SK
(Note 8, 16)
External
dynamic brake
(optional)
(Note 14) Servo motor
U
U
M
V
V
W
W
(Note 9) Encoder cable
MCCB
BU
Encoder
(Note 5)
BV
Power
supply
BW
Cooling fan
(Note 12)
Short-circuit connector
(packed with the drive unit)
10
DICOM
ALM
15
RA1
24 V DC
5
DICOM
3
DOCOM
EM2
20
(Note 7)
SD Main circuit
power supply