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Main circuit terminal specifications
2.2 Main circuit terminal specifications
2.2.1 Specification of main circuit terminal
* When using single-phase power input, terminals are R/L1 and S/L2.
2.2.2 Terminal arrangement of the main circuit terminal, power supply and the motor
wiring
Three-phase 200V class
* For wiring to earth (ground) terminals of FR-D720-238 and 318, use the earthing cable wiring space (marked with an arrow) to route the wires.
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) or
power regeneration common converter (FR-CV).
U, V, W Inverter output Connect a three-phase squirrel-cage motor.
P/+, PR Brake resistor connection
Connect a brake resistor (FR-ABR, MRS type, MYS type) across terminals P/+ and PR.
(The brake resistor can not be connected to the FR-D720-008 and 014 and FR-
D720S-008 and 014.)
P/+, N/- Brake unit connection
Connect the brake unit (FR-BU2), power regeneration common converter (FR-CV)
or high power factor converter (FR-HC).
P/+, P1 DC reactor connection Remove the jumper across terminals P/+ and P1 and connect a DC reactor.
Earth (Ground) For earthing (grounding) the inverter chassis. Must be earthed (grounded).
FR-D720-008 to 042 FR-D720-070 to 165
FR-D720-238, 318
Screw size
(M3.5)
MotorPower supply
N/-
P/+ PR
IM
R/L1 S/L2 T/L3
Jumpe
r
Screw size (M3.5)
Screw size
(M4)
Motor
Power supply
N/-
P/+
PR
IM
R/L1 S/L2 T/L3
Jumper
Screw size (M4)
Power supply Motor
IM
Screw size (M5)
Screw size (M5)
Jumper
N/-
P/+ PR
R/L1S/L2 T/L3