20
1 FUNCTIONS AND CONFIGURATION
1.2 Function block diagram
200 V class
■
MR-J4-500GF(-RJ) or less
Model position
Current
control
Actual
position
control
Actual
speed
control
Virtual
motor
Virtual
encoder
L11
L21
Cooling fan
*3
Encoder
N-
C
D
L3
L2
L1
Dynamic
brake
circuit
Power factor improving
DC reactor
*6
Current
detection
Overcurrent
protection
Voltage
detection
Power
supply
*2
MC
MCCB
Base
amplifier
STO
circuit
CN5
USB
USB
Personal
computer
Controller or
servo amplifier
Controller or
servo amplifier
CN1A
CN1B
D/A
Analog monitor
(2 channels)
Position
command
input
CN3
Servo amplifier
U
V
W
U
V
W
P3
P4
*4
Diode
stack
Relay
P+
+
+
B
RA
24 V DC
B1
B2
Battery
(For absolute position
detection system)
CN4
STO
switch
Model speed Model torque
M
CN2
CN8
Control
circuit
power
supply
Model
position
control
Model
speed
control
I/F Control
Servo motor
CHARGE
lamp
Regene-
rative
TR
Current
detector
Digital I/O
control
Regenerative
option
U
U
U
Step-
down
circuit
Electromagnetic
brake
*1
*5
External encoder
CN2L
Summary of Contents for MELSERVO-J4 series
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