Gate drive
SW power
supply
Main circuit
control
Internal
control
power
supply
GR
L2C
L1C
L2
L3
L1
FUSE
CN A
+
−
~
~
+
−
~
~
~
15V
G1
VCC1
±VCC
G2
E5V
Over-
current
detection
Current
detection
Voltage
detection
Regene-
rative
control
Relay
drive
TH
GR
CN B
U
V
W
B1
B3
B2
Internal regeneration resistor
Cooling fan
Control I/O interface
MECHATROLINK-II
interface
Display/
setting circuits
RS-232
interface
CN6B
connector
CN6A
connector
CN3
connector
CN2 encoder signal connector
CN1 control I/O connector
RS
485
±S
+
E5V
+
BAT
EG
G
MPU & ASIC
Position, speed, and torque processor,
PWM control
Encoder
communications
interface
MECHATROLINK-II
communications line
RS-232
computer
Except for the
R88D-GN04L-ML2/-GN08H-ML2