Mitsubishi Electric Melservo-J3 Series MR-J3-B Instruction Manual page 325

13. SERVO AMPLIFIERS WITH A LARGE CAPACITY (30k TO 55kW)
(b) 400V class (MR-J3-DU30KB4 to MR-J3-DU55KB4)
NFB
3-phase
380 to 480VAC
50/60Hz
Power factor improving
DC reactor (Option)
P
G3
Regenerative
option(Note 1)
Cooling fan
R400
(Note 4)
Drive
Stepdown
unit thermal relay
transformer
RA1 RA2
Converter
unit
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 P
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 200V class.
5. For specifications of cooling fan power supply, refer to section 13.3.8.
Converter unit
TE2-2
L
L
CN40
MC
L
1
L
2
L
3
CN1
L
11
1
L
21
5
CNP1
MC1 1 6
MC2 2 2
7
9
P
1
(Note 2)
P
2
C
C P C
G4 G3 G4
Regenerative
option(Note 1)
Cooling fan
S400 R400 S400
Motor
(Note 3)
Forced stop
EM1
RA3 RA4
Controller
forced stop
Drive unit
TE2-1
L
L
CN40A
MR-J3CDL05M
cable
CN40B
Termination
connector
MR-J3-TM
(Option)
DICOM
24VDC
DOCOM
CN2
DICOM
ALM RA2
EM1
(Note 3)
DOCOM
P C
CN3
G3 G4
Regenerative
option(Note 1)
Cooling fan
R400 S400
L
11
L
21
Operation
Plate
-ready
OFF/ON
MC
SK
13 - 28
(Note 5)
Power
supply
Dynamic
brake
(Option)
Servo motor
U
U
V
V
W
W
Encoder cable
Cooling fan
OHS1
24VDC
power supply
RA3
10
DICOM
RA1
15 ALM
24VDC
5
DICOM
3
DOCOM
20 EM1
(Note 3)
SD
-P .
1 2
NFB
Dynamic
brake
(Option)
M
BU
Encoder
BV
BW
OHS2
Servo motor
thermal relay