Mitsubishi Electric MELSERVO-J4 Instruction Manual page 61

3. SIGNALS AND WIRING
(1) MR-J4-60A4(-RJ) to MR-J4-350A4(-RJ)
3-phase
380 V AC or
480 V AC
Forced stop 2
(Note 4)
Servo-on
Note 1. Always connect between P3 and P4 terminals. (factory-wired) When using the power factor improving DC reactor, refer to
section 9.8. Use either the power factor improving DC reactor or the power factor improving AC reactor.
2. Always connect between P+ and D terminals. (factory-wired) When using the regenerative option, refer to section 9.2.
3. For the encoder cable, use of the option cable is recommended. For selecting cables, refer to "Servo Motor Instruction
Manual (Vol. 3)".
4. This diagram is for sink I/O interface. For source I/O interface, refer to section 3.9.3 in MR-J4-_A(-RJ) Servo Amplifier
Instruction Manual.
5. For connecting servo motor power wires, refer to "Servo Motor Instruction Manual (Vol. 3)".
6. 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.
7. Configure a circuit to turn off EM2 when the main circuit power is turned off to prevent an unexpected restart of the servo
amplifier.
8. When not using the STO function, attach the short-circuit connector came with a servo amplifier.
9. 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 9.7.)
10. Connecting a servo motor for different axis to U, V, W, or CN2 of the servo amplifier may cause a malfunction.
11. Stepdown transformer is required when the coil voltage of the magnetic contactor is 200 V class.
12. The illustration of the 24 V DC power supply is divided between input signal and output signal for convinence. However,
they can be configured by one.
Malfunction
RA1
Emergency stop switch
(Note 11)
Step-down
transformer
(Note 6)
MCCB
MC
(Note 9) (Note 1)
(Note 2)
(Note 7)
Main circuit power supply
24 V DC (Note 12)
(Note 8)
Short-circuit connector
(Packed with the servo amplifier)
OFF
ON
MC
Servo amplifier
CNP1
(Note 10)
N-
CNP3
U
L1
V
L2
W
L3
P3
P4
CNP2
P+
C
(Note 10)
D
CN2
L11
L21
CN1
EM2
CN1
SON
DOCOM
ALM
DICOM
CN8
3 - 4
MC
SK
Servo motor
(Note 5)
U
Motor
V
M
W
(Note 3)
Encoder
Encoder cable
24 V DC (Note 12)
Malfunction
RA1
(Note 4)