Hitachi L100 Instruction Manual page 12

Cautions for Operations and Monitoring
Warnings and Cautions for Troubleshooting and Maintenance
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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.
CAUTION: The heat sink fins will have a high temperature. Be
careful not to touch them. Otherwise, there is the danger of getting
burned.
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.
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.
CAUTION: It is possible to damage the inverter or other devices in
your application if the maximum current or voltage characteristics
of a connection point are exceeded.
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: Make sure that only qualified personnel will perform
maintenance, inspection, and part replacement. (Before starting to
work, remove any metallic objects from your person (wristwatch,
bracelet, etc.). Be sure to use tools with insulated handles. Other-
wise, there is a danger of electric shock and/or injury to personnel.
WARNING: Never remove connectors by pulling on its wire leads
(wires for cooling fan and logic p.c.board). Otherwise, there is a
danger of fire or injury due to wire breakage.
CAUTION: When removing connectors, never pull the wires (wires
for the cooling fan and logic P.C. board. Otherwise, there is danger
of fire due to wire breakage and/or injury to personnel.
CAUTION: Never test the withstand voltage (HIPOT) on the
inverter. The inverter has a surge protector between the main circuit
terminals above and the chassis ground.
ix
L100 Inverter
......... 4–16
........... 4–2
........... 4–2
........... 4–2
........... 4–4
........... 6–2
........... 6–2
........... 6–2
........... 6–2
......... 6–12