Input Power Supply Circuit - Mitsubishi Electric Melservo MR-J3-A Instruction Manual

3. SIGNALS AND WIRING

3.1 Input power supply circuit

CAUTION
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
NFB
3-phase
200 to
230VAC
Emergency stop
(Note 4)
Note 1. Always connect P -P
1
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.
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.
Emergency
RA
stop
MC
(Note 1)
(Note 2)
Servo-on
. (Factory-wired.) When using the power factor improving DC reactor, refer to section 12.13.
2
ON
OFF
MC
MC
SK
Servo amplifier
CNP1
L
1
CNP3
L U
2
L V
3
N W
P
1
P
2
PE
CNP2
P
C
D
CN2
L
11
L
21
CN1 CN1
EMG
DOCOM
SON
DICOM
ALM
DOCOM
3 - 2
Servo motor
(Note 5)
U 2
Motor
V 3
W 4
1
(Note 3)
Encoder
Encoder cable
24VDC
RA Trouble
M
(Note 4)