Mitsubishi Electric 700 Series Installation Manualline page 12

CAUTION
To prevent a malfunction due to noise, keep the signal cables more than 10cm away from the power cables. Also separate the main
circuit wire of the input side and the output side.
After wiring, wire offcuts must not be left in the inverter. Wire offcuts can cause an alarm, failure or malfunction. Always keep the
inverter clean. When drilling mounting holes in an enclosure etc., take care not to allow chips and other foreign matter to enter the
inverter.
Set the voltage/current input switch correctly. Different setting may cause a fault, failure or malfunction.
3.2 Main circuit terminal
3.2.1 Main circuit terminal specifications
Terminal
Terminal Name
Symbol
R/L1,
S/L2, AC power input
T/L3
U, V, W Inverter output
R1/L11, Power supply for
S1/L21 control circuit
DC reactor
P/+, P1
connection
P/+, N/– —
Earth (Ground)
3.2.2 Terminal layout and wiring
FR-A770-355K, 560K-79
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 clockwise direction when viewed on the motor shaft. (The phase sequence must be matched.)
When wiring the inverter main circuit conductor, 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.
Description
Connect to the commercial power supply.
Connect a three-phase squirrel-cage motor.
Connected to the AC power supply terminals R/L1 and S/L2. To retain the fault display and fault
output, remove the jumpers across terminals R/L1 and R1/L11 and across S/L2 and S1/L21,
and apply external power supply of 380 to 480VAC to these terminals.
Connect the DC reactor.
Non-connection
For earthing (grounding) the inverter chassis. Must be earthed (grounded).
Charge lamp
Jumper
P/+
M
P/+
3~
Motor
DC reactor
WIRING
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