Instruction manual

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 brake
transistor fault or the like may overheat the regenerative brake resistor, causing a
fire.
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
SON
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
Emergency
stop
3-phase
200 to
230VAC
Servo amplifier
(Note 1)
(Note 2)
Emergency stop
Servo-on
Servo motor
(Note 3)
Motor
(Note 3)
Encoder cable
Encoder
Trouble
EMG
CN1
CN1
(Note 4)
(Note 4)
Note 1. Always connect P
1
-P
2
. (Factory-wired.) When using the power factor improving DC reactor, refer to Section 12.10.
2. Always connect P-D. (Factory-wired.) When using the regenerative brake option, refer to Section 12.2.
3. For connection of the servo amplifier and servo motor, 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.