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Main circuit terminal specifications
FR-A740-75K, 90K FR-A720-75K, 90K
FR-A740-110K to 185K
FR-A740-220K to 500K
CAUTION
· The power supply cables must be connected to R/L1, S/L2, T/L3. (Phase sequence needs not to 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. At this time, turning ON the forward rotation switch (signal) rotates the
motor in the counterclockwise direction when viewed from the motor shaft.
· When wiring the inverter main circuit conductor of the 220K or higher, tighten a nut from the right side
of the conductor. When wiring two wires, place wires on both sides of the conductor. (Refer to the
drawing on the right.) For wiring, use bolts (nuts) provided with the inverter.
• Handling of the wiring cover
(FR-A720-15K, 18.5K, 22K, FR-A740-18.5K, 22K)
For the hook of the wiring cover, cut off the necessary
parts using a pair of long-nose pliers etc.
IM
R/L1 S/L2 T/L3
N/-
P/+
R1/L11 S1/L21
DC reactor
Power
supply
Motor
Jumper
Charge lamp
P/+
R/L1 S/L2 T/L3
N/-
P/+
R1/L11 S1/L21
P/+
P/+
IM
Jumper
Charge lamp
Motor
For option
DC reactor
Power
supply
IM
R/L1 S/L2 T/L3
N/-
R1/L11 S1/L21
P/+
P/+
Jumper
Charge lamp
Motor
Power supply
DC reactor
CAUTION
Cut off the same number of lugs as wires. If parts where
no wire is put through has been cut off (10mm or more),
protective structure (JEM1030) becomes an open type
(IP00).