Hitachi SJ700B SERIES Quick Reference Manual page 4

Safety Instructions
3. Operation
- While power is supplied to the inverter, do not touch any terminal or internal part of the inverter, check signals, or
connect or disconnect any wire or connector. Otherwise, you run the risk of electric shock or fire.
- Be sure to close the terminal block cover before turning on the inverter power. Do not open the terminal block
cover while power is being supplied to the inverter or voltage remains inside. Otherwise, you run the risk of
electric shock.
- Do not operate switches with wet hands. Otherwise, you run the risk of electric shock.
- While power is supplied to the inverter, do not touch the terminal of the inverter, even if it has stopped. Otherwise,
you run the risk of injury or fire.
- If the retry mode has been selected, the inverter will restart suddenly after a break in the tripping status. Stay
away from the machine controlled by the inverter when the inverter is under such circumstances. (Design the
machine so that human safety can be ensured, even when the inverter restarts suddenly.) Otherwise, you run the
risk of injury.
- Do not select the retry mode for controlling an elevating or traveling device because output free-running status
occurs in retry mode. Otherwise, you run the risk of injury or damage to the machine controlled by the inverter.
- If an operation command has been input to the inverter before a short-term power failure, the inverter may restart
operation after the power recovery. If such a restart may put persons in danger, design a control circuit that
disables the inverter from restarting after power recovery. Otherwise, you run the risk of injury.
- The [STOP] key is effective only when its function is enabled by setting. Prepare an emergency stop switch
separately. Otherwise, you run the risk of injury.
- If an operation command has been input to the inverter before the inverter enters alarm status, the inverter will
restart suddenly when the alarm status is reset. Before resetting the alarm status, make sure that no operation
command has been input.
- While power is supplied to the inverter, do not touch any internal part of the inverter or insert a bar in it. Otherwise,
you run the risk of electric shock or fire.
- Do not touch the heat sink, which heats up during the inverter operation. Otherwise, you run the risk of burn injury.
- The inverter allows you to easily control the speed of motor or machine operations. Before operating the inverter,
confirm the capacity and ratings of the motor or machine controlled by the inverter. Otherwise, you run the risk of
injury.
- Install an external brake system if needed. Otherwise, you run the risk of injury.
- When using the inverter to operate a standard motor at a frequency of over 60 Hz, check the allowable motor
speeds with the manufacturers of the motor and the machine to be driven and obtain their consent before starting
inverter operation. Otherwise, you run the risk of damage to the motor and machine.
- During inverter operation, check the motor for the direction of rotation, abnormal sound, and vibrations.
Otherwise, you run the risk of damage to the machine driven by the motor.
4. Maintenance, inspection, and parts replacement
- Before inspecting the inverter, be sure to turn off the power supply and wait for 10 minutes or more. Otherwise,
you run the risk of electric shock.
(Before inspection, confirm that the Charge lamp on the inverter is off and the DC voltage between terminals P
and N is 45 V or less.)
- Commit only a designated person to maintenance, inspection, and the replacement of parts.
(Be sure to remove wristwatches and metal accessories, e.g., bracelets, before maintenance and inspection work
and to use insulated tools for the work.)
Otherwise, you run the risk of electric shock and injury.
5. Others
- Never modify the inverter. Otherwise, you run the risk of electric shock and injury.
- Do not discard the inverter with household waste. Contact an industrial waste management company in your area
who can treat industrial waste without polluting the environment.
WARNING
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CAUTION
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WARNING
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WARNING
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CAUTION
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