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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
alarm display and alarm 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.
Do not turn off the power supply for control circuit (R1/L11, S1/L21) with the
main circuit power (R/L1, S/L2, T/L3) on. Doing so may damage the
inverter. The circuit should be configured so that the main circuit power (R/
L1, S/L2, T/L3) is also turned off when the power supply for control circuit
(R1/L11, S1/L21) is off.
P/+, N/-
Brake unit
connection
Connect the brake unit (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
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