LS ELECTRIC L7NHF Series, User Manual

Page: 28 / 409

2. Wiring and Connection
2-6
2.3
Internal Block Diagram of the Servo Drive
2.3.1
L7NHF Drive Block Diagram
(L7NHFA010U and
L7NHFA035U)
Analog output connection
Diode
L3
AC200~230V
3-phase
Power Input Input
L1
L2
Lamp
Chage
Thermistor
P/C insulation I/F
Input/Output connection (I/O)
Digital input
(6 points)
Digital output
(3 points)
POWER circuit connection
PWM signal SC
detection circuit
MCU / FPGA
Regenerative
braking drive
circuit
Encoder 1
U and V current
detection circuit
DB drive
circuit
ENCODER
M
IGBT
Regeneration brake
resistor
W
Current
sensor
U
V
B
B+
BI
E
PO PI
IGBT
temperature
detection circuit
C1
C2
S
M
P
S
T1 T2
Thermistor
Relay drive
circuit
Single-phase
Power Input
AC200~230V
USB
communi
cation
USB
ECAT IN/OUT
USB OTG FS
Quadrature
Internal
temperature
detection circuit
Thermistor
Control power phase
loss detection circuit
Main power phase
loss detection
circuit
Safety function
input (2 points)
Safety device connection (STO)
ESC
A/D
conversion
BiSS-B, BiSS-C
TAMAGAWA
EnDat
Main control
DC voltage
detection
circuit
Safety function
output (1 point)
EtherCAT
Communication
U, V current
DC voltage
0
5
x10
5
x1
0
Note 1) Note 2)
Note 3)
Analog Output
(2 Points)
Sinusoidal,
AnalogHall
Encoder 2
ENCODER2
N
Note 4)
Note 1) To use a DC reactor, connect it to the PO and PI pins.
Note 2) To use an external regeneration brake resistor, remove the B and BI short-circuit pins and connect
the resistor to the B+ and B pins.
Note 3) L7NHFA010U and L7NHFA035U models are cooled by a DC 24 V cooling fan.
Note 4) Use N terminals to connect the external capacitor. The product may burn if a commercial power
supply is connected to N terminals. Always contact the customer center or agency when it is
necessary to connect the external capacitor.