Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 362

■400 V class
Step-down
transformer
MCCB
Power
supply *1
Main circuit power supply
24 V DC
*1 For power supply specifications, refer to the following.
Page 30 Servo amplifier standard specifications
*2 Between P3 and P4 is connected by default. When using the power factor improving DC reactor, remove the short bar between P3 and
P4. Additionally, a power factor improving DC reactor and power factor improving AC reactor cannot be used simultaneously.
Page 407 Power factor improving DC reactors
*3 Connect P/+ and N/- terminals of the brake unit to a correct destination. Incorrect connection destination results in servo amplifier and
brake unit malfunction.
*4 Contact rating: 1a contact, 110 V AC, 5 A/220 V AC, 3 A
Normal condition: TH1-TH2 is not conducting. Abnormal condition: TH1-TH2 is conducting.
*5 Contact rating: 230 V AC, 0.3 A/30 V DC, 0.3 A
Normal condition: B-C is conducting./A-C is not conducting. Abnormal condition: B-C is not conducting./A-C is conducting.
*6 Do not connect more than one cable to each P+ and N- terminals of the servo amplifier.
*7 Always connect BUE and SD terminals. (factory-wired)
*8 Depending on the main circuit voltage and operation pattern, bus voltage decreases, and that 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.
*9 Configure a circuit to turn off EM2 when the main circuit power is turned off to prevent an unexpected restart of the servo amplifier.
*10 When wires used for L11 and L21 are thinner than wires used for L1, L2, and L3, use a molded-case circuit breaker.
*11 The illustration of the 24 V DC power supply is divided between input signal and output signal for convenience. However, they can be
configured by one.
11 OPTIONS AND PERIPHERAL EQUIPMENT
360
11.3 FR-BU2-(H) brake unit
ALM
RA1
Emergency stop switch
Servo amplifier
MC *8
L1
L2
L3
L11
L21
*10
CN3
*9
EM2 20
DICOM 5
*11
10
DICOM
OFF
ON
MC
CN3
24 V DC *11
3
DOCOM
15 ALM
RA1
P3
*2
P4
P+
*6
N-
RA2
MC
SK
MT-BR5-H
TH1
*4
P
TH2
PR
FR-BU2-H
PR MSG
P/+ SD
*3
A
N/-
B
C
BUE
*5
*7
SD
SK
RA2