Function Block Diagram - Mitsubishi Electric MR-J4-10A(-RJ) Instruction Manual

19. MR-D01 EXTENSION I/O UNIT

19.1 Function block diagram

The function block diagram of this servo is shown below.
The following illustration is an example of MR-J4-20A-RJ.
Servo amplifier
MCCB MC
L1
(Note 2)
U
L2
Power
supply
U
L3
L11
L21
STO
switch
command
D I/O control
Analog
(2 channels)
(Note 5)
Power factor
improving DC reactor
P3 P4 (Note 4)
Diode
stack Relay
+
U
Cooling fan
(Note 3)
Control
+
circuit
power
STO
supply
circuit
amplifier
Position
Model
input
position
control
Model position
Actual
position
control
A/D USB
I/F
CN1 CN5
Personal
computer
USB
Controller
RS-422
Servo-on
RS-485
Command pulse train input
Start
Malfunction, etc.
Regenerative
option
P+ C D N-
(Note 1)
Regene-
Charge
rative
lamp
TR
Base Voltage
Overcurrent
detection protection
Model
speed
control
Virtual
motor
Model speed Model torque
Actual
Current
speed
control
control
RS-422
D/A
RS-485
CN3 CN6
Analog monitor
(2 channels)
19 - 2
Dynamic
brake
circuit
U
V
Current
detector
W
24 V DC
Current
detection
Virtual
encoder
Step-
down
circuit
Battery
(for absolute position
detection system)
CN7
MR-D01
CN10 CN20
DI/O control
Analog input
Analog output
Servo motor
U
V
M
W
B1
RA
Electro-
magnetic
B
brake
B2
Encoder
External encoder