2 System Connection
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2
2 System Connection
Safety Information
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Do not perform wiring when the power is turned on. Failure to comply may result
in electric shock.
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Always keep breakers in OFF state.
Warning
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When installing the drive inside an enclosed cabinet, use cooling fan or air condi-
tioner to keep temperature below 50°C.Failure to comply may result in overheat-
ing or even a re.
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Cover the top of the drive with a temporary cloth or paper during installation so
as to prevent foreign matter such as metal shavings, oil and water from falling
into the drive. If any foreign matter falls into the drive, the drive may have a fault.
After the installation is completed, remove the temporary cloth or paper. If leaving
the cloth or paper on the drive, the drive may have abnormal heating due to poor
ventilation.
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Follow proper electrostatic discharge (ESD) procedures when operating the AC
drive. Failure to comply will damage the drive because of static electricity.
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Operating the motor at low speed lowers the cooling effect and increases the
motor temperature, which may result in damage to the motor. The motor heat
emission conditions shall be improved.
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The motor speed range is subject to the lubrication method and manufacturer.
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If the required motor speed range differs from that of the motor manufacturer,
contact them for advice.
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If the torque characteristic is different with drive operation compared with opera-
tion from a commercial power supply, check the load torque characteristic of the
connected machine.
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Pay attention to the load torque characteristic when selecting the drive capacity.
In addition, when there is a long distance between the motor and drive, use a ca-
ble with a large cross sectional area to connect between the motor and the drive
to prevent motor torque reduction.
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If the rated current of the pole-changing motor is different from that of a standard
motor, check the maximum current of the motor and select an appropriate AC
drive. Be sure to switch the pole after the motor stops.
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Do not lift the AC drive while the front cover is removed. Failure to comply may
result in damage to PCB and terminal block.
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