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3. SIGNALS AND WIRING
(8) MR-J3-11KB4 to MR-J3-22KB4
BW
BV
BU
Cooling fan
(Note 7)
(Note 8)
Cooling fan
power supply
Dynamic
break
(Option)
OFF
Forced
stop
ON
MC
MC
SK
(Note 4)
Alarm
RA1
Controller
forced stop
RA2
Servo amplifier
NFB MC
L
1
L
2
L3
3-phase
380 to
480VAC
P
C
TE1
PE
L
11
L
21
U
V
W
M
Encoder
CN2
(Note 3)
Encoder cable
(Note 6)
P
1
(Note 1)
(Note 2)
Regenerative
resistor
24VDC
power supply
OHS2OHS1
Servo motor
thermal relay
Servo motor
thermal relay
RA3
RA3
U
V
W
Servo motor
EM1
ALM RA1
DICOM
DOCOM
24VDC
DOCOM
Forced stop
CN3CN3
(Note 5)
Trouble
(Note 4)
(Note 5)
(Note 9)
Stepdown
transformer
NFB
Note 1. Always connect P1 and P. (Factory-wired.) When using the power factor improving DC reactor, refer to section 11.13.
2. When using the regenerative option, refer to section 11.2.
3. For the encoder cable, use of the option cable is recommended. Refer to section 11.1 for selection of the cable.
4. If deactivating output of trouble (ALM) with parameter change, configure up the power supply circuit which switches off the
magnetic contactor after detection of alarm occurrence on the controller side.
5. For the sink I/O interface. For the source I/O interface, refer to section 3.7.3.
6. Refer to section 3.10.
7. Servo amplifiers does not have BW when the cooling fan power supply is 1-phase.
8. For the cooling fan power supply, refer to section 3.10.2 (3) (b).
9. Stepdown transformer is required for coil voltage of magnetic contactor more than 200V class.