FL20-C Series
44
4.1
Main circuit wiring
4.1.1
Names and functions of Main circuit wiring terminals
1)
220V names and functions of main circuit wiring terminals
Terminal Symbol
Terminal Name
Function
L1/R
，
L2/S
，
L3/T
Main circuit power
input terminals
Connect 3-phase 220V input power
Connect 1-phase 220V power supply between L1 and
L3.
(2kW and above drive only connects to 3-phase power
supply)
L1C
，
L2C
Control power input
terminals
Connect any 2 phase in 3-phase power supply or
single-phase power supply.
B1/P
，
B2/B
，
B3
B2
，
B3
：
Built-in
braking resistor
connecting terminal
Terminals are shorted by default. Use built-in brake
resistor. (built-in braking resister for the drive of M2
and above cover)
B1/P
，
B2/B
：
External
braking resistor
connecting terminal
Normally no need to connect.
If built-in braking capacity is insufficient, remove the
jumper between B2 and B3, and connect external
braking resistor between B1 and B2.
N+
，
N-
DC reactor
connecting terminals
Terminals are shorted by default.
Connect DC reactor between both terminals when
restraining power harmonic.
U
，
V
，
W
Servo motor
connection terminals
Connect to servo motor.
，
Ground terminal
The servo drive must be grounded.
2)
380V names and functions of main circuit wiring terminals
Terminal Symbol
Terminal Name
Function
R/L1
，
S/L2
，
T/L3
Main circuit power
input terminals
Connect 3-phase 380V input power supply
(R, S, T are the main circuit power input terminals of
M4 and above drives )
L1C
，
L2C
Connection forbidden
Disabled
B1/P
，
B2/B
，
B3
B2
，
B3
：
Built-in braking
resistor connecting
terminal
Terminals are shorted by default. Use built-in brake
resistor. (no built-in braking resistor for 7.5kW and
above drives)
B1/P
，
B2/B
：
External braking
resistor connecting
terminal
Normally no need to connect.
If the built-in braking capacity is insufficient, remove
the jumper between B2 and B3, connect external
braking resistor between B1 and B2.
N+
、
N-
、
—
DC bus reference
terminal
Forbidden to ground or connect to zero line.
U
，
V
，
W
Servo motor
connection terminals
Connect to servo motor.
