Mitsubishi Electric MELSERVO-J3W Series, Instruction Manual

Page: 342 / 500

14. USING A DIRECT DRIVE MOTOR
14 - 9
(2) Connection example
(Note 5)
Servo amplifier
(Note 9)
Power
supply
CNP1
CNP2
(Note 5)
CN2A
CNP3B
CN2B
CN3 CN3
CNP3A
PE( )
24VDC
(Note 4)
A-axis malfunction
(Note 3)
B-axis malfunction
(Note 3)
L
1
L
2
L
3
P
L
11
L
21
D
C
(Note 1)
A-axis direct drive motor
U
V
W
M
Motor
Encoder
(Note 2)
Encoder cable
EM1
DOCOM
(Note 4)
ALM-A
DICOM
DOCOM
U
V
W
M
Motor
ALM-B
RA1
RA2
MC MCCB
OFF
MC
ON RA3
RA1(A-axis)
RA2(B-axis)
Controller
forced stop
Forced stop
(Note 6)
Malfunction
SK
SW3 (Note 7)
ON
A-axis
B-axis
2
1
Fro
n
t s
ide
(Note 8)
B-axis direct drive motor
(Note 2)
Encoder cable
Encoder
U
V
W
U
V
W
(Note 3)
MC
(Note 6) Forced stop
(Note 10)
(Note 10)
Note 1. Always connect between P and D terminals. When using the regenerative option, refer to section 11.2.
2. Fabricate the encoder cables according to 14.8.1. When you use the cables for the absolute position detection system, absolute
position units are required.
3. If disabling malfunction (ALM-A/ALM-B) output with the parameter, configure up the power supply circuit which switches off the
magnetic contactor after detection of alarm occurrence on the controller side. This example is to continue the operation in another
axis even if an alarm occurs either A-axis or B-axis. When stopping operation of both axes at an alarm occurrence for one axis,
connect RA1 and RA2 in series.
4. This is for sink I/O interface. For source I/O interface, refer to section 3.7.3.
5. Refer to section 14.2 for wiring power lines.
6. Configure up the circuit which shuts off main circuit power with external circuit at forced stop 1 (EM1) off.
7. This connection example is for using a direct drive motor. Turn on SW3.
(Refer to section 3.14.)
8. Use a magnetic contactor with an operation delay time (interval between current being applied to the coil until closure of contacts) of
80ms or less.
9. For 1-phase 200VAC to 230VAC, connect the power supply to L1 and L2. Leave L3 open. Refer to section 1.3 for the power supply
specification.
10. Connecting a servo motor for different axis to the CNP3A or CNP3B connector may cause a malfunction.