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Main circuit terminal specifications
2.2 Main circuit terminal specifications
2.2.1
Specification of main circuit terminal
2.2.2
Terminal arrangement of the main circuit terminal, power supply and the motor
wiring
200V class
Terminal
Symbol
Terminal Name
Description
R/L1,
S/L2,
T/L3
AC power input
Connect to the commercial power supply.
Keep these terminals open when using the high power factor converter
(FR-HC, MT-HC) or power regeneration common converter (FR-CV).
U, V, W
Inverter output
Connect a three-phase squirrel-cage motor.
R1/L11,
S1/L21
Power supply for
control circuit
Connected to the AC power supply terminals R/L1 and S/L2. To retain the
fault display and fault output or when using the high power factor converter
(FR-HC, MT-HC) or power regeneration common converter (FR-CV),
remove the jumpers from terminals R/L1-R1/L11 and S/L2-S1/L21 and
apply external power to these terminals.
The power capacity necessary when separate power is supplied from R1/
L11 and S1/L21 differs according to the inverter capacity.
P/+, N/-
Brake unit
connection
Connect the brake unit (FR-BU2, FR-BU, BU and MT-BU5), power
regeneration common converter (FR-CV), high power factor converter (FR-
HC and MT-HC) or power regeneration converter (MT-RC).
P/+, P1
DC reactor
connection
For the 55K or less, remove the jumper across terminals P/+ - P1 and
connect the DC reactor. (Be sure to connect the DC reactor supplied with
the 75K or more.)
PR, PX
Please do not remove or use terminals PR and PX or the jumper connected.
Earth (ground)
For earthing (grounding) the inverter chassis. Must be earthed (grounded).
FR-F720-0.75K, 1.5K
FR-F720-2.2K to 5.5K
15K or less
18.5K
22K or more
200V class
60VA
80VA
80VA
400V class
60VA
60VA
80VA
R/L1 S/L2 T/L3
N/-
P/+
PR
PX
R1/L11 S1/L21
Charge lamp
As this is an inside cover fixing screw,
do not remove it.
Jumper
Screw size (M4)
Screw size
(M4)
Jumper
Motor
Power supply
IM
R/L1 S/L2 T/L3
N/-
P/+
PR
PX
R1/L11 S1/L21
IM
Charge lamp
Jumper
Screw size (M4)
Screw size
(M4)
Jumper
Motor
Power
supply