Mitsubishi Electric FR-A720-0.4K Instruction Manual page 29

Main circuit terminal specifications
FR-A740-75K, 90K
R1/L11 S1/L21
R/L1 S/L2 T/L3
Power
supply
FR-A740-220K to 500K
R1/L11 S1/L21
R/L1 S/L2 T/L3 N/-
Power supply
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.
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).
18
Charge lamp
Jumper
N/- P/+
P/+
IM
Motor
DC reactor
Charge lamp
Jumper
P/+
P/+
IM
Motor
DC reactor
FR-A720-75K, 90K
FR-A740-110K to 185K
R1/L11 S1/L21
R/L1 S/L2 T/L3 N/-
P/+
Power
supply
For option
Charge lamp
Jumper
P/+
P/+
IM
Motor
DC reactor