Hitachi L2002 User Manual

Hitachi

viii

Cautions for Operations and Monitoring

WARNING: Be sure not to touch the inside of the energized inverter or to
put any conductive object into it. Otherwise, there is a danger of electric
shock and/or fire.

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WARNING: If power is turned ON when the Run command is already
active, the motor will automatically start and injury may result. Before
turning ON the power, confirm that the RUN command is not present.

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WARNING: When the Stop key function is disabled, pressing the Stop
key does not stop the inverter, nor will it reset a trip alarm.

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WARNING: Be sure to provide a separate, hard-wired emergency stop
switch when the application warrants it.

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WARNING: If the power is turned ON and the Run command is already
active, the motor starts rotation and is dangerous! Before turning power
ON, confirm that the Run command is not active.

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WARNING: After the Reset command is given and the alarm reset
occurs, the motor will restart suddenly if the Run command is already
active. Be sure to set the alarm reset after verifying that the Run
command is OFF to prevent injury to personnel.

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CAUTION: The heat sink fins will have a high temperature. Be careful
not to touch them. Otherwise, there is the danger of getting burned.

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CAUTION: The operation of the inverter can be easily changed from low
speed to high speed. Be sure check the capability and limitations of the
motor and machine before operating the inverter. Otherwise, it may cause
injury to personnel.

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CAUTION: If you operate a motor at a frequency higher than the inverter
standard default setting (50Hz/60Hz), be sure to check the motor and
machine specifications with the respective manufacturer. Only operate
the motor at elevated frequencies after getting their approval. Otherwise,
there is the danger of equipment damage.

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CAUTION: It is possible to damage the inverter or other devices if your
application exceeds the maximum current or voltage characteristics of a
connection point.

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CAUTION: Be sure to turn OFF power to the inverter before changing
the SR/SK switch position. Otherwise, damage to the inverter circuitry
may occur.

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CAUTION: Be careful not to turn PID Clear ON and reset the integrator
sum when the inverter is in Run Mode (output to motor is ON). Other-
wise, this could cause the motor to decelerate rapidly, resulting in a trip.

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