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General Warnings and Cautions
General Warnings and Cautions
WARNING: Never modify the unit. Otherwise, there is a danger of electric shock and/
or injury.
CAUTION: Withstand voltage tests 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: Do not stop operation by switching off electromagnetic contactors on the
primary or secondary sides of the inverter.
When there has been a sudden power failure while an operation instruction is active, then
the unit may restart operation automatically after the power failure has ended. If there is
a possibility that such an occurrence may harm humans, then install an electromagnetic
contactor (Mgo) on the power supply side, so that the circuit does not allow automatic
restarting after the power supply recovers. If the optional remote operator is used and
the retry function has been selected, this will also cause automatic restarting when an
operation instruction is active. So, please be careful.
HIGH VOLTAGE: Be careful not to touch wiring or connector
terminals when working with the inverters and taking measure-
ments. Be sure to place the measurement circuitry above in an
insulated housing before using them.
........ 6–13
Power
Input
Inverter
L1, L2, L3
Earth leakage
breaker
U, V, W
Motor
P24
FW
Technologies Inc.
Toll Free: voice: 1-877-539-2542 fax: 1-800-539-2542 www.mgitech.com