15
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 L1 and N.
2.2.2
Terminal arrangement of the main circuit terminal, power supply and the motor
wiring
Three-phase 400V class
Single-phase 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) or
power regeneration common converter (FR-CV).
U, V, W
Inverter output
Connect a three-phase squirrel-cage motor.
+, PR
Brake resistor connection
Connect a brake transistor (FR-ABR, MRS) across ter and PR.
(The brake resistor can not be connected to the FR-D720S-008 and 014.)
+, -
Brake unit connection
Connect the brake unit (FR-BU2), power regeneration common converter (FR-CV)
or high power factor converter (FR-HC).
+, P1
DC reactor connection
Remove the jumper across ter and P1 and connect a DC reactor.
Earth (Ground)
For earthing (grounding) the inverter chassis. Must be earthed (grounded).
FR-D740-012 to 080
FR-D740-120, 160
FR-D720S-008 to 042
FR-D720S-070, 100
NOTE
Make sure the power cables are connected to the R/L1, S/L2, T/L3. (Phase need not be matched.) Never connect the
power cable to the U, V, W of the inverter. Doing so will damage the inverter.
Connect the motor to U, V, W. Turning on the forward rotation switch (signal) at this time rotates the motor
counterclockwise when viewed from the load shaft.
-
+
PR
R/L1 S/L2 T/L3
Screw size
(M4)
Motor
Power supply
IM
Jumper
Screw size (M4)
-
+
PR
R/L1 S/L2 T/L3
Screw size (M4)
Screw size
(M4)
Motor
Power supply
Jumper
IM
Screw size
(M3.5)
Motor
Power supply
-
+
PR
IM
Jumper
Screw size (M3.5)
L1
N
-
+
PR
L1
N
Screw size
(M4)
Motor
Power supply
IM
Jumper
Screw size (M4)
Summary of Contents for FR-D700 Series
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