Function Block Diagram; Servo Amplifier - Mitsubishi Electric Melservo-J3 Series MR-J3-B Instruction Manual

1. FUNCTIONS AND CONFIGURATION

1.2 Function block diagram

The function block diagram of this servo is shown below.
(1) MR-J3-350B or less MR-J3-200B4 or less

Servo amplifier

Diode
stack Relay
NFB MC
L
1
(Note 2)
L
2
Power
supply
L
3
L
11
L
21
servo amplifier
Note 1. The built-in regenerative resistor is not provided for the MR-J3-10B (1).
2. For 1-phase 200 to 230VAC, connect the power supply to L
There is no L for 1-phase 100 to 120VAC power supply. Refer to section 1.3 for the power supply specification.
3
3. Servo amplifiers MR-J3-70B or greater have a cooling fan.
Power factor
improving DC Regenerative
reactor option
P( )
P P
1 2
CHARGE
lamp
(Note 3)Cooling fan
Control
circuit
power
supply
amplifier
Position
command
input
Model position
control
Model
position
Actual position
control
I/F Control
CN1A CN1B
Controller or Servo amplifier
or cap
N( )
C D
(Note 1)
Current
detector
Regene-
rative
TR
Base Voltage Overcurrent
detection protection
Model speed
control
Virtual
motor
Model
speed
Actual speed Current
control control
USB
CN5
Personal
Analog monitor
computer
(2 channels)
USB
, L and leave L
1 2
1 - 2
Dynamic
brake
Current
detection
Virtual
encoder
Model
torque
D/A
CN3
Digital I/O
control
open.
3
Servo motor
U U
V V
M
W W
B1
Electro-
magnetic
B2
brake
Encoder
MR-J3BAT
Optional battery
(for absolute position
detection system)