4 - 2
4. SIGNALS AND WIRING
4.1 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 (RYn0) 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-J3-10T to MR-J3-350T
RA
NFB
MC
L
1
L
2
L
3
ALM
RA
P
1
P
2
P
DICOM
DOCOM
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
DOCOM
Forced
stop
3-phase
200 to
230VAC
Servo amplifier
(Note 1)
(Note 2)
(Note 4) Forced stop
Servo motor
(Note 5)
Motor
(Note 3)
Encoder cable
Encoder
Trouble
EMG
CN6
CN6
(Note 4)
Note 1. Always connect P
1
-P
2
. (Factory-wired.) When using the power factor improving DC reactor, refer to section 14.11.
2. Always connect P-D. (Factory-wired.) When using the regenerative option, refer to section 14.2.
3. For encoder cable, use of the option cable is recommended. Refer to section 14.1 for selection of the cable.
4. For the sink I/O interface.
For the source I/O interface, refer to section 4.8.3.
5. Refer to section 4.10.
Summary of Contents for MELSERVO MR-J3-xT
Page 22: ...8 MEMO ...
Page 156: ...4 46 4 SIGNALS AND WIRING MEMO ...
Page 276: ...7 26 7 MR Configurator MEMO ...
Page 324: ...10 16 10 SPECIAL ADJUSTMENT FUNCTIONS MEMO ...
Page 418: ...14 66 14 OPTIONS AND AUXILIARY EQUIPMENT MEMO ...