Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 360

MCCB
Power
*1
supply
Main circuit
power supply
24 V DC
*1 For the power supply specifications, refer to the following.
Page 30 Servo amplifier standard specifications
*2 When using the servo amplifier of 7 kW or less, make sure to disconnect the wiring of built-in regenerative resistor (5 kW or less: P+ and
D, 7 kW: P+ and C).
terminals.
*3 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
*4 Connect P/+ and N/- terminals of the brake unit to a correct destination. Incorrect connection destination results in servo amplifier and
brake unit malfunction.
*5 Contact rating: 1b contact, 110 V AC, 5 A/220 V AC, 3 A
Normal condition: TH1-TH2 is conducting. Abnormal condition: TH1-TH2 is not conducting.
*6 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.
*7 Do not connect more than one cable to each P+ and N- terminals of the servo amplifier.
*8 Always connect BUE and SD terminals. (factory-wired)
*9 Connect MSG and SD terminals of the brake unit to a correct destination. Incorrect connection destination results in servo amplifier and
brake unit malfunction.
*10 For connecting P+ and N- terminals of the servo amplifier to the terminal block, use the cable indicated in the following section.
Page 362 Cables for connecting the servo amplifier and a distribution terminal block when connecting two sets of the brake unit
*11 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.
*12 Configure a circuit to turn off EM2 when the main circuit power is turned off to prevent an unexpected restart of the servo amplifier.
*13 When wires used for L11 and L21 are thinner than wires used for L1, L2, and L3, use a molded-case circuit breaker.
*14 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
358
11.3 FR-BU2-(H) brake unit
ALM
RA1
Emergency stop switch
Servo amplifier
MC *11
L1
L2
L3
L11
L21
*13
CN3
*12
EM2 20
5
DICOM
*14
10
DICOM
For the servo amplifier of 11 kW to 22 kW, do not connect a supplied regenerative resistor to the P+ and C
OFF
ON
MC
MC
SK
CN3
*14
24 V DC
3
DOCOM
15 ALM
RA1
P3
*3
P4
*10
P+
*7
N-
C
Terminal
block
*2
FR-BR
TH1
*5
P
TH2
PR
FR-BU2
PR MSG
*9
P/+ SD
*4
A
N/-
B
C
BUE
*6
*8
SD
FR-BR
TH1
*5
P
TH2
PR
FR-BU2
PR MSG
*9
P/+ SD
*4
A
N/-
B
C
BUE
*6
*8
SD