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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)

Motor

Power supply

N/-

P/+

R/L1 S/L2 T/L3

Jumper

Screw size (M3.5)

Screw size

(M4)

Motor

Power supply

N/-

P/+

R/L1 S/L2 T/L3

Jumper

Screw size (M4)

Power supply Motor

Screw size (M5)

Jumper

N/-

P/+ PR R/L1 S/L2 T/L3