2-9
2-2 Wiring
2
Design
Wiring to the Power Supply and Motor
•Do not connect the power supply other than to R/L1, S/L2, or T/L3.
•Do not remove the short-circuit bar between P/+2 and +1, except when a DC reactor is connected.
Note 1: Install an earth leakage breaker on the power supply input side.
(Select an earth leakage breaker having a larger high-frequency sensed current and avoid
unnecessary operation.)
If the wiring between the Inverter and the motor is too long (longer than 10 m), the thermal
relay may malfunction due to harmonics. Install an AC reactor on the Inverter output side,
or use a current sensor instead of the thermal relay.
R/L1S/L2 T/L3
Power supply
Ground
U/T1 V/T2
W/T3
N/- P/+2 +1
Motor
Motor
earth
Main circuit terminal block (input side)
Main circuit terminal block (output side)
(Example) 3G3JX-A2004
R/L1 S/L2 T/L3
Power supply
Ground
U/T1V/T2
W/T3
N/- P/+2 +1
Motor
earth
Motor
Main circuit terminal block (input side)
Main circuit terminal block (output side)
(Example) 3G3JX-A2037
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