4 Operational
4.2 Operational hazard warnings
DC1…20… and DC1…OE1 Variable Frequency Drives 02/20 MN040059EN www.eaton.com 123
NOTICE
Any contactors and switching devices on the line side are not to
be opened during motor operation. Inching operation using the
mains contactor is not permitted.
Contactors and switchgear (repair and maintenance switches)
on the motor side must not be opened while the motor is in
operation.
Inching operation of the motor with contactors and switching
devices in the output of the variable frequency drive is not
permissible.
NOTICE
Make sure that there is no danger in starting the motor.
Disconnect the driven machine if there is a danger in an
incorrect operating state.
￫
If motors are to be operated with frequencies higher than the
standard 50 or 60 Hz, then these operating ranges must be
approved by the motor manufacturer. The motors could be
damaged otherwise.
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