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Warnings and Cautions for Troubleshooting and Maintenance
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.
… 6-2
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. Otherwise, there is a danger of electric shock and/or injury to
personnel.
… 6-2
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 due to wire breakage
and/or injury to personnel.
… 6-2
CAUTION: Do not connect the megger to any control terminals such as intelligent
I/O, analog terminals, etc. Doing so could cause damage to the inverter.
… 6-10
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.
… 6-10
CAUTION: Do not connect the megger to any control circuit terminals such as
intelligent I/O, analog terminals, etc. Doing so could cause damage to the inverter.
… 6-10
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.
… 6-10
HIGH VOLTAGE: Be careful not to touch wiring or connector terminals when
working with the inverters and taking measurements. Be sure to place the
measurement circuitry components above in an insulated housing before using
them.
… 6-14
General Warnings and Cautions iv
WARNING: Never modify the unit. Otherwise, there is a danger of electric shock and/or injury.
CAUTION: Withstand voltage test and insulation resistance tests (HIPOT) are executed before
the units are shipped, so there is no need to conduct these tests before operation.
CAUTION: Do not attach or remove wiring or connectors when power is applied. Also, do not
check signals during operation.
CAUTION: Be sure to connect the grounding terminal to earth ground.
CAUTION: When inspecting the unit, be sure to wait five minutes after turning OFF the power
supply before opening the cover.
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