Omron VARISPEED E7 User Manual page 51

Wiring the Output Side of Main Circuit
Observe the following precautions when wiring the main output circuits.
Connecting the Inverter and Motor
Connect output terminals U/T1, V/T2, and W/T3 respective to the motor lead wires U, V, and W.
Check that the motor rotates forward with the forward run command. Switch over any two of the output termi-
nals to each other and reconnect if the motor rotates in reverse with the forward run command.
Never Connect a Power Supply to Output Terminals
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Never connect a power supply to output terminals U/T1, V/T2, and W/T3. If voltage is applied to the output
terminals, the internal circuits of the Inverter will be damaged.
Never Short or Ground Output Terminals
If the output terminals are touched with bare hands or the output wires come into contact with the Inverter cas-
ing, an electric shock or grounding may occur. This is extremely hazardous. Do not short the output wires.
Do Not Use a Phase Advancing Capacitor
Never connect a phase advancing capacitor to an output circuit. The high-frequency components of the
Inverter output may overheat and be damaged and may cause other parts to burn.
Do Not Use an Electromagnetic Switch
Never connect an electromagnetic switch (MC) between the Inverter and motor and turn it ON or OFF during
operation. If the MC is turned ON while the Inverter is operating, a large inrush current will be created and the
inverter's overcurrent protection will operate.
When using a MC to switch for instance between two motors, stop the Inverter output before operating the
MC.
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