1 - 2
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
Dynamic
brake
Current
detector
CHARGE
lamp
Control
circuit
power
supply
(MR-J3-70A or more)
Cooling fan
Electro-
magnetic
brake
Servo motor
D
C
P
Regenerative
option
NFB
MC
L
1
L
2
L
3
L
11
L
21
B2
Servo amplifier
U
V
W
U
V
W
M
B1
(Note1)
Regene-
rative
TR
P
1
P
2
Power factor
improving DC
reactor
N
(Note 2)
Power
supply
Diode
stack Relay
(Note 3)
Base
amplifier
Voltage
detection
Overcurrent
protection
Encoder
A/D
CN1
I/F
Model position
control
Model speed
control
Pulse
input
Model
position
Actual position
control
Actual speed
control
Current
control
Model torque
Virtual
motor
Virtual
encoder
CN2
MR-J3BAT
Optional battery
(for absolute position
detection system)
Current
detection
Model
speed
CON1
CN5
USB
CN3
RS-422
CN6
D/A
D I/O control
Servo on
Start
Failure, etc.
Analog
(2 channels)
USB
Personal
computer
RS-422
Controller
Analog monitor
(2 channels)
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
, L
2
and leave L
3
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.
Содержание MELSERVO MR-J3 A Series
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