Connection Example - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

Connection example

• EM2 has the same function as EM1 in the torque mode.
• Connecting PR terminal of the brake unit to P+ terminal of the servo amplifier results in brake unit
malfunction. Always connect the PR terminal of the brake unit to the PR terminal of the resistor unit.
Combination with FR-BR-(H) resistor unit
■When connecting a brake unit to a servo amplifier
• 200 V class
MCCB
Power
*1
supply
Main circuit
*10
power supply
24 V DC *12
*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). For the servo amplifier of 11 kW to 22 kW, do not connect a supplied regenerative resistor to the 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 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.
*10 Configure a circuit to turn off EM2 when the main circuit power is turned off to prevent an unexpected restart of the servo amplifier.
*11 When wires used for L11 and L21 are thinner than wires used for L1, L2, and L3, use a molded-case circuit breaker.
*12 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.
ALM
OFF
RA1
Emergency stop switch
Servo amplifier
MC *9
L1
CN3
L2
3
L3
L11
15
L21
*11
P3
CN3
P4
EM2 20
5
P+
DICOM
*7
10
DICOM
N-
C
ON
MC
MC
SK
24 V DC *12
DOCOM
ALM
RA1
*3
*2
11 OPTIONS AND PERIPHERAL EQUIPMENT
FR-BR
*5
TH1
P
TH2
PR
FR-BU2
PR MSG
P/+ SD
*4
A
N/-
B
C
BUE
*6
*8
SD
11.3 FR-BU2-(H) brake unit
11
355