Mitsubishi Electric MELSERVO-JN Series, Instruction Manual

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3 - 3
3. SIGNALS AND WIRING
Wire the main circuit power supply as shown below so that the servo-on (SON) turns off as soon as alarm
occurrence is detected and power is shut off.
A molded-case circuit breaker (MCCB) must be used with the input cables of the main circuit power supply.
SON
EM1
L
1
L
2
Main circuit power supply
1-phase 200 to 230VAC
or
1-phase 100 to 120VAC
ALM
P
C
DICOM
+24V
0V
U
V
W
Control circuit power supply
CNP1
Servo amplifier
CNP2
U
V
W
M
Motor
Encoder
CN2
Encoder cable
CN1 CN1
24VDC
Trouble
MC (Note 6)
MCCB
RA
Servo motor
Forced stop (Note 5)
Servo-on
OFF
Trouble
RA
MC
ON
MC
SK
Forced stop (Note 5)
Circuit protector
(Note 4)
(Note 2)
(Note 3)
(Note 3)
24VDC (Note 7)
(Note 1)
Built-in regenerative
resistor
DOCOM
DOCOM
Note 1. The built-in regenerative resistor is provided for MR-JN-20A(1) and MR-JN-40A. (Factory-wired.) When using the regenerative
option, refer to section 11.2.
2. For encoder cable, use of the option cable is recommended. Refer to section 11.1 for selection of the cable.
3. For sink I/O interface.
For source I/O interface, refer to section 3.8.3.
4. Refer to section 3.10.
5. Configure the circuit to shut off the main circuit power supply by an external sequence simultaneously with the forced stop
(EM1) turning OFF.
6. Be sure to use a magnetic contactor (MC) with an operation delay time of 80ms or less. The operation delay time is the time
interval between current being applied to the coil until closure of contacts.
7. Use the enhanced insulation power supply for the control circuit power supply 24VDC. In addition, do not use a power supply
with an output voltage starting time of one second or more.