Mitsubishi Electric Melservo-J3 Series MR-J3-B Instruction Manual page 389

13. SERVO AMPLIFIERS WITH A LARGE CAPACITY (30k TO 55kW)
(b) Combination with MT-BR5-(H) resistor unit
1) When connecting a brake unit to a converter unit
NFB
(Note 1)
Power supply
(Note 5)
Drive
unit
RA1 RA2
Converter
unit
Note 1. For power supply specifications, refer to section 13.1.3.
2. Configure the circuit to turn OFF the forced stop (EM1) of the drive unit and the converter unit at the same time.
3. Always connect between P
section 13.9.6.
4. Connect P/ and N/
brake unit malfunction.
5. For the converter unit and the drive unit of 400V class, a stepdown transformer is required.
6. Contact rating: 1b contact, 110VAC_5A/220VAC_3A
Normal condition: TH1-TH2 is not conducting. Abnormal condition: TH1-TH2 is conducting.
7. Contact rating: 230VAC_0.3A/30VDC_0.3A
Normal condition: B-C is conducting/A-C is not conducting. Abnormal condition: B-C is not conducting/A-C is conducting.
8. Connect the thermal relay censor of the servo motor.
9. Do not connect more than one cable to each L
10. Always connect between BUE and SD terminals (Factory-wired).
Converter unit
L
L
MC
L
1
L
2
L
CN1
3
L
11
L
21
CNP1
MC1 1
MC2 2
L
(Note 9)
L
(Note 2)
Controller
Forced stop
forced stop
EM1
RA3 RA4 RA5
Servo motor
thermal relay
(Note 8)
and P terminals (Factory-wired). When using the power factor improving DC reactor, refer to
1 2
terminals of the brake unit to a correct destination. Wrong connection results in the converter unit and
Drive unit
L
L
P
1
(Note 3)
P
2
1 DICOM
24VDC
5
DOCOM
6 DICOM
2 ALM
RA2
7 EM1
(Note 2)
9
DOCOM
L
11
L
21
MC
Operation
ready
SK
OFF/ON
and L terminals of TE2-1 of the converter unit.
13 - 92
CN3
15 ALM
RA1
10 DICOM
24VDC
5 DICOM
3
DOCOM
20 EM1
Forced stop
Plate SD
(Note 2)
MT-BR5-(H)
(Note 6)
P
PR
FR-BU2-(H)
PR
P/
(Note 4)
N/
BUE
(Note 7)
(Note 10)
SD
SK
TH1
RA5
TH2
MSG
SD
A
B
C