Mitsubishi Electric MELSERVO MR-J3 A Series, Instruction Manual

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3 - 2
3. SIGNALS AND WIRING
3.1 Input power supply circuit
CAUTION
When the servo amplifier has become faulty, switch power off on the servo
amplifier power side. Continuous flow of a large current may cause a fire.
Use the trouble signal to switch power off. Otherwise, a regenerative transistor
fault or the like may overheat the regenerative resistor, causing a fire.
During power-on, do not open or close the motor power line. Otherwise, a
malfunction or faulty may occur.
Wire the power supply and main circuit as shown below so that the servo-on (SON) turns off as soon as alarm
occurrence is detected and power is shut off.
A no-fuse breaker (NFB) must be used with the input cables of the power supply.
(1) For 3-phase 200 to 230VAC power supply to MR-J3-10A to MR-J3-350A
RA
NFB MC
L
1
L
2
L
3
RA
P
1
P
2
P
SK
MC
ON
OFF
MC
L
11
L
21
N
D
C
U
V
W
CNP1
CNP3
PE
CNP2
U
V
W
2
3
4
1
M
CN2
24VDC
Emergency
stop
Servo amplifier
(Note 1)
(Note 2)
Emergency stop
Servo-on
Servo motor
(Note 5)
Motor
(Note 3)
Encoder cable
Encoder
Trouble
DOCOM
DICOM
DOCOM
(Note 4)
(Note 4)
CN1
EMG
SON
CN1
ALM
3-phase
200 to
230VAC
Note 1. Always connect P
1
-P
2
. (Factory-wired.) When using the power factor improving DC reactor, refer to section 12.13.
2. Always connect P-D. (Factory-wired.) When using the regenerative option, refer to section 12.2.
3. For encoder cable, use of the option cable is recommended. Refer to section 12.1 for selection of the cable.
4. For the sink I/O interface.
For the source I/O interface, refer to section 3.8.3.
5. Refer to section 3.10.