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13. SERVO AMPLIFIERS WITH A LARGE CAPACITY (30k TO 55kW)
(b) 400V class (MR-J3-DU30KB4 to MR-J3-DU55KB4)
3-phase
380 to 480VAC
50/60Hz
(Note 6)
Power
supply
S400R400S400R400 S400R400
MR-J3CDL05M
cable
Termination
connector
MR-J3-TM
(Option)
L
L
Encoder cable
Converter unit Drive unit
MC
L
1
L
2
L
3
L11
L
21
NFB
1MC1
2MC2
CN40 CN40A
CN2
Dynamic
brake
(Option)
Servo motor
thermal relay
RA3
OHS1
BW
BV
BU
M
OHS2
Encoder
V
U
W
CN40B
24VDC
power supply
V
U
W
Servo motor
NFB
TE2-2
L
L
TE2-1
C
P
1
P
2
(Note 2)
L
11
L
21
G4G3
PC
G4G3
PC
G4G3
PC
Regenerative
option(Note 1)
CNP1
CN1
1
DICOM
5
DOCOM
6
DICOM
RA22ALM
7EM1
9
DOCOM
CN3
EM1
3
20
SDPlate
DICOM
10
ALM15
DOCOM
5
DICOM
RA1
Regenerative
option(Note 1)
Regenerative
option(Note 1)
(Note 3)
(Note 3)
Cooling fan Cooling fan Cooling fan
Cooling fan
RA1 RA2 RA3
Converter
unit
Motor
thermal relay
Operation
-ready
Drive
unit
EM1
SK
RA4
Controller
forced stop
MC
(Note 3)
Forced stop
OFF
ON
MC
(Note 5)
Power factor improving
DC reactor (Option)
24VDC
24VDC
(Note 4)
Stepdown
transformer
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
1-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 200V class.
5. Attach connector for magnetic contactor wiring on the converter unit. Unattached state may cause an electric shock.
6. For specifications of cooling fan power supply, refer to section 13.3.8.