Mitsubishi Electric MELSERVO-J4 Instruction Manual page 20

1. FUNCTIONS AND CONFIGURATION
(1) MR-J4-350B4(-RJ) or less
Servo amplifier
MCCB MC
L1
(Note 1)
U
L2
Power
supply
U
L3
L11
L21
STO
switch
Controller or
servo amplifier
Note 1. Refer to section 1.2.2 for the power supply specification.
2. Servo amplifiers MR-J4-200B4(-RJ) or more have a cooling fan.
3. MR-J4 servo amplifier has P3 and P4 in the upstream of the inrush current suppression circuit. They are different from P1 and
P2 of MR-J3 servo amplifiers.
4. This is for MR-J4-_B4-RJ servo amplifier. MR-J4-_B4 servo amplifier does not have CN2L connector.
5. The power factor improving AC reactor can also be used. In this case, the power factor improving DC reactor cannot be used.
When not using the power factor improving DC reactor, short P3 and P4.
(Note 5)
Power factor
Regenerative
improving
DC reactor
P3 P4 (Note 3)
Diode
stack
Relay
+
U
Cooling fan
(Note 2)
Control
+
circuit
power
STO
supply
circuit
amplifier
Position
command
Model
input
position
control
Model position
Actual
position
control
IF Control
CN1A CN1B
Servo amplifier
or cap
option
P+ C D N-
Regene-
rative
TR
Charge
lamp
Base Voltage
Overcurrent
detection
protection
Virtual
encoder
Model
speed
control
Virtual
motor
Model speed Model torque
Actual
Current
speed
control
control
USB
CN5
Personal
Analog monitor
computer
(2 channels)
USB
1 - 7
Dynamic
brake
circuit
U U
V V
Current
detector
W W
RA
24 V DC
Current
detection
Step-
down
circuit
MR-BAT6V1SET
Optional battery
(For absolute
position detection
system)
External encoder
(Note 4)
D/A
CN3
Digital I/O
control
Servo motor
M
B1
Electromagnetic
B
brake
B2
Encoder