LS ELECTRIC L7NHF Series, User Manual

Page: 31 / 409

2. Wiring and Connection
2-9
2.4.1
Power Supply Wiring Diagram

Power Supply Wiring Diagram (L7NHFA010U and L7NHFA035U)
U
V
W
L1
L2
L3
C1
C2
B+
B
BI
9
11
I/O
RA
M
E
Alarm-
Alarm+
1Ry
RA
1SK
1Ry 1MC
+24
V
NF
1MC
R S T
Servo drive
AC 200~230[V]
Main
OFF Main
ON
Encoder
External
regenerati
ve resistor
NOTE 1)
NOTE 2)
PO PI
DC reactor
N
NOTE 3)
Note 1) It takes approximately 1 to 2 seconds until an alarm signal is output after you turn on the main power.
Press and hold the main power ON switch for at least 2 seconds.
Note 2) 1 kW and 3.5 kW drives have built-in regenerative resistors
of (100 W, 40 Ω) and (150 W, 13 Ω),
respectively. Short-circuit B and BI terminals before using them. If the regenerative capacity is high
because of frequent acceleration and deceleration, open the short-circuit pins (B and BI) and connect
an external regenerative resistor to B and B+.
Note 3) 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.
Note 4) Remove approximately 7 to 10 [
㎜
] of the sheathing from the cables for the main circuit power and
use the dedicated pressurized terminals. (Refer to Section 2.4.3, "Power Circuit Electrical
Components.”)
Note 5) For the [1 kW] drive, press the button on the drive terminal to attach or remove wires to the main
circuit power unit. For the [3.5 kW] drive, use a (-) flathead screwdriver to attach or remove the wires.