DF5 Operation
09/01 AWB8230-1412GB
48
Operational warning message
Warning!
If the supply voltage recovers after a brief failure, the
motor may restart automatically if a start signal is still
present. If personnel are endangered as a result, an
external circuit must be provided which excludes a restart
after voltage recovery.
Warning!
If the frequency inverter has been configured so that the
stop command is not issued via the OFF key on the LCD
keypad, pressing the OFF key will not switch off the
motor. A separate Emergency-Stop switch must be
provided in the case.
Warning!
Maintenance and inspection of the frequency inverter
may only be undertaken at least 5 minutes after the
supply voltage has been switched off. Failure to observe
this point can result in electric shock as a result of the high
voltages involved.
Warning!
Never pull on the cable to unplug connectors (e.g. for
fan or circuit boards).
Warning!
If a malfunction is responded to by a reset, the motor
will start automatically if a start signal is applied at the
same time. To avoid the risk of serious or fatal injury to
personnel, you must ensure that the start signal is not
present before acknowledging an error message with a
reset.
Warning!
When the supply voltage for the frequency inverter is
applied when 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!
Cables or plug connectors may not be connected or
disconnected 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 para-
meters of the frequency inverter have been configured
accordingly (a Section ”Setting the frequency and start
command parameters”, Page 78).
h
Before operating motors at frequencies above the stan-
dard 50 or 60 Hz, contact their manufacturers to verify
that the motors are suitable for operation at higher
frequencies. The motors could otherwise incur damage.
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