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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 FR-A740-04320 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.
Wiring cover and Handling (FR-A720-00760 (FR-A740-00440) or less)
1)
Remove the wiring cover of the inverter. Punch out a knockout by firmly tapping it with such as a hammer. Remove
any sharp edges and burrs from knockout holes of the wiring cover.
2)
Install conduits and fix with conduits clamps. Pass the cable always through the conduit.
CAUTION
When handling the wiring cover, care must be taken not to cut fingers or hands with sharp edges and burrs.
To avoid wire offcuts and other foreign matter to enter the inverter, conduits must be installed to the all knockout holes.
Do not wire without using conduits. Otherwise, the cable sheathes may be scratched by the wiring cover edges,
resulting in a short circuit or ground fault.
REMARKS
When using conduits for the FR-A720-00030 and 00050, fix the conduits to the wiring cover after connecting the earth cable to
the inverter earth terminal.
Wiring cover
WARNING
Main circuit terminal specifications
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