Mitsubishi Electric MELSERVO-J4 series Instruction Manual page 83

3. SIGNALS AND WIRING
(5) MR-J4-11KB(-RJ)/MR-J4-15KB(-RJ)/MR-J4-22KB(-RJ)
MCCB
3-phase
200 V AC to
240 V AC
(Note 10)
(Note 8)
Main circuit power supply
(Note 5) Forced stop 2
(Note 9)
Short-circuit connector
(Packed with the servo amplifier)
Note 1. Between P3 and P4 is connected by default. When using the power factor improving DC reactor, remove the short bar
between P3 and P4. Refer to section 11.11 for details. Additionally, a power factor improving DC reactor and power factor
improving AC reactor cannot be used simultaneously.
2. When using the regenerative option, refer to section 11.2.
3. For the encoder cable, use of the option cable is recommended. For selecting cables, refer to "Servo Motor Instruction Manual
(Vol. 3)".
4. If disabling ALM (Malfunction) output with the parameter, configure up the power supply circuit which switches off the magnetic
contactor after detection of alarm occurrence on the controller side.
5. This diagram is for sink I/O interface. For source I/O interface, refer to section 3.8.3.
6. For connecting servo motor power wires, refer to "Servo Motor Instruction Manual (Vol. 3)".
7. Use a magnetic contactor with an operation delay time (interval between current being applied to the coil until closure of
contacts) of 80 ms or less. 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.
8. Configure a circuit to turn off EM2 when the main circuit power is turned off to prevent an unexpected restart of the servo
amplifier.
9. When not using the STO function, attach the short-circuit connector came with a 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. (Refer to
section 11.10.)
11. Connecting a servo motor of the wrong axis to U, V, W, or CN2 of the servo amplifier may cause a malfunction.
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.
13. For the servo motor with a cooling fan.
14. For the cooling fan power supply, refer to "Servo Motor Instruction Manual (Vol. 3)".
(Note 4)
Malfunction
RA1
EMG stop switch
Servo amplifier
MC
(Note 7)
L1
L2
L3
P+
C
(Note 2)
L11
L21
N-
P3
(Note 1)
P4
CN3
EM2
DICOM
24 V DC (Note 12)
CN8
OFF
ON
MC
MC
SK
External
dynamic
brake (optional)
(Note 11)
U
V
W
(Note 6)
(Note 11) (Note 3)
Encoder
CN2
cable
24 V DC (Note 12)
CN3
DOCOM
ALM
3 - 8
Servo motor
U
Motor
V
M
W
Encoder
BU
BV
BW
Cooling fan
Malfunction (Note 4)
RA1
(Note 14)
Cooling fan
power supply
MCCB
(Note 13)
(Note 5)