Operating the DF6
01/02 AWB8230-1413GB
52
Operational warnings
Warning!
If the supply voltage recovers after an intermittent
failure, the motor may restart automatically if a start
signal is still present. If personnel is endangered as a
result, an external circuit must be provided which
prevents a restart after voltage recovery.
Warning!
If the frequency inverter has been configured so that the
stop signal is not issued through the OFF key on the LCD
keypad, pressing the OFF key will not switch off the
motor.
Warning!
Before carrying out maintenance and inspection work on
the frequency inverter, wait at least five minutes after the
supply voltage has been switched off. Failure to observe
this point can result in electric shock due to high
equipment voltages.
Warning!
Never pull on the cable to unplug connectors (e.g. for fan
or circuit boards).
Warning!
If a reset is issued after a malfunction, the motor will start
automatically if a start signal is also present. To avoid the
risk of serious or fatal injury to personnel, you must ensure
that the start signal is not present before acknowledging
a fault message with a reset.
Warning!
When the supply voltage for the frequency inverter is
applied while the start signal is active, the motor will
start immediately. Make sure that the start signal is not
active before the supply voltage is switched on.
Warning!
Do not connect cables or connectors during operation
when the supply voltage is switched on.
Caution!
To prevent a risk of serious or fatal injury to personnel,
never interrupt the operation of the motor by opening the
contactors installed on the primary or secondary side.
h
The ON key is functional only if the corresponding
parameters of the frequency inverter have been
configured accordingly (a section “Setting the
frequency and start signal parameters”, page 107).
h
Before operating motors at frequencies above the
standard 50 or 60 Hz, contact their manufacturer to
verify that the motors are suitable for operation at
higher frequencies. The motors could otherwise incur
damage.
efesotomasyon.com - Klockner Moeller - inverter
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