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1. FUNCTIONS AND CONFIGURATION
1.2 Function block diagram
The function block diagram of this servo is shown below.
(1) MR-J3-350A or less
MR-J3-200A4 or less
CD
L
11
CN5 CN3 CN6
I/F
USB RS-422 D/AA/D
USB RS-422
CN4
MR-J3BAT
CN1
P
1
P
2
P( ) N( )
B
NFB
(Note 2)
Power
supply
MC
RA
24VDC
B1
B2
L1
L
2
L
3
L
21
Servo amplifier
U
V
W
U
V
W
Diode
stack
Regenerative
option
Power factor
improving DC
reactor
CHARGE
lamp
Regene-
rative TR
(Note 1)
Current
detector
M
Servo motor
Dynamic
brake circuit
Electro-
magnetic
brake
Encoder
Base
amplifier
Voltage
detection
Overcurrent
protection
Current
detection
Control
circuit
power
supply
(Note 3) Cooling fan
Relay
Pulse input
Model position
control
Model speed
control
Virtual
encoder
Virtual
motor
Model
position
Model
speed
Model torque
Actual position
control
Actual speed
control
Current
control
Optional battery
(for absolute position
detection system)
Analog monitor
(2 channels)
Personal
computer
D I/O control
Servo on
Command pulse train input
Start
Failure, etc
.
Analog
(2 channels)
Controller
CN2
Note 1. The built-in regenerative resistor is not provided for the MR-J3-10A(1).
2. For 1-phase 200 to 230VAC, connect the power supply to L
1, L2 and leave L3 open.
There is no L
3 for 1-phase 100 to 120VAC power supply. For the specification of power supply, refer to section 1.3.
3. Servo amplifiers MR-J3-70A or greater have a cooling fan.