Safety Precautions - Hitachi SJ/L-EN Ethernet Communications Module Instruction Manual

Chapter1

SAFETY PRECAUTIONS

HIGH VOLTAGE: This symbol indicates high voltage. It calls your attention to items or operations
that could be dangerous to you and other persons operating this equipment. Read the message and
follow the instructions carefully.
WARNING: Indicates a potentially hazardous situation that, if not avoided, can result in serious
injury or death.
CAUTION: Indicates a potentially hazardous situation that, if not avoided, can result in minor to
moderate injury, or serious damage to the product. The situation described in the CAUTION may, if
not avoided, lead to serious results. Important safety measures are described in CAUTION (as well as
WARNING), so be sure to observe them.
HIGH VOLTAGE: Motor control equipment and electronic controllers are connected to hazardous
line voltages. When servicing drives and electronic controllers, there may be exposed components
with housings or protrusions at or above line potential. Extreme care should be taken to protect
against shock. Stand on an insulating pad and make it a habit to use only one hand when checking
components. Always work with another person in case an emergency occurs. Disconnect power
before checking controllers or performing maintenance. Be sure equipment is properly grounded.
Wear safety glasses whenever working on electronic controllers or rotating machinery.
WARNING: This equipment should be installed, adjusted, and serviced by qualified electrical
maintenance personnel familiar with the construction and operation of the equipment and the hazards
involved. Failure to observe this precaution could result in bodily injury.
WARNING: HAZARD OF ELECTRICAL SHOCK. DISCONNECT INCOMING POWER
BEFORE WORKING ON THIS CONTROL.
WARNING: Wait at least five (5) minutes after turning OFF the input power supply before
performing maintenance or an inspection. Otherwise, there is the danger of electric shock.
WARNING: Do not install or remove the SJ/L-EN Ethernet module while the inverter is energized.
Otherwise there is the danger of unpredictable inverter operation.
WARNING: Never modify the unit. Otherwise, there is a danger improper and/or unpredictable
inverter operation.
CAUTION: Be sure to secure the SJ/L-EN module with the supplied mounting screws. Make sure all
connections are made securely; otherwise there is danger of a loose connection and unpredictable
operation.
CAUTION: Alarm connection may contain hazardous live voltage even when inverter is
disconnected. When removing the front cover for maintenance or inspection, confirm that incoming
power for alarm connection is completely disconnected.
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