3 - 14
3. SIGNALS AND WIRING
(b) MR-J2S- B4
CN1
MC
L
1
L
2
L
3
L
11
L
21
NFB
13 COM
12 VDD
8
ALM
3
SE
5
SG
RA3
P
N
P
N
N
P
N
CN5
CN5A
CN2
RA2
OSH1
BW
BV
BU
M
P
C
P
1
P
2
RA3
RA2
EMG
OFF
ON
MC
MC
SK
OHS2
P
V
U
W
CN5B
L
11
L
21
V
U
W
S400
R400
G4
G3
P
C
S400
R400
G4
G3
P
C
S400
R400
G4
G3
P
C
NFB
MR-HCN2
3-phase
380 to
480VAC
50/60Hz
Converter unit
Servo amplifier
MR-A-TM
termination
connector
(Option)
MR-J2HBUS
M cable
Servo motor
Dynamic
brake
Fan
Encoder
24VDC
power
supply
Servo motor
thermal relay
Motor thermal
relay
Operation-ready
Step-
down
trans-
former
Fan
(Note1)
Regenerative
brake option
Fan
Fan
(Note1)
Regenerative
brake option
(Note1)
Regenerative
brake option
(Note2)
Encoder cable
Converter
Power factor improving
DC reactor (Option)
3-phase
380 to 460VAC
50/60Hz
(Note3)
Note 1. For the MR-RB138-4. For the MR-RB138-4, three units are used as one set (permissible wattage: 3900W).
2. When using the Power factor improving DC reactor, disconnect the short bar across P1-P2.
3. Configure up the circuit so that power is switched off in the external sequence at servo alarm occurrence.
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