20 Safety
Safe start-up and operation
These warnings are intended for all who plan the operation, start up or operate the
drive.
Electrical safety
Permanent magnet synchronous motor drives
These warnings concern permanent magnet synchronous motor drives. Ignoring the
instructions can cause physical injury or death, or damage to the equipment.
WARNING! It is not recommended to run the permanent magnet synchronous
motor over 1.2 times the rated speed. Motor overspeed may lead to
overvoltage which may permanently damage the drive.
General safety
WARNING! Ignoring the following instructions can cause physical injury or
death, or damage to the equipment.
• Before adjusting the drive and putting it into service, make sure that the motor and
all driven equipment are suitable for operation throughout the speed range
provided by the drive. The drive can be adjusted to operate the motor at speeds
above and below the speed provided by connecting the motor directly to the
power line.
• Do not activate automatic fault reset functions if dangerous situations can occur.
When activated, these functions will reset the drive and resume operation after a
fault.
• Do not control the motor with an AC contactor or disconnecting device
(disconnecting means); use instead the control panel start and stop keys and
or external commands (I/O or fieldbus). The maximum allowed number of
charging cycles of the DC capacitors (ie, power-ups by applying power) is two per
minute and the maximum total number of chargings is 15 000.
Note:
• If an external source for start command is selected and it is ON, the drive will start
immediately after an input voltage break or fault reset unless the drive is
configured for 3-wire (a pulse) start/stop.
• When the control location is not set to local (LOC not shown on the display), the
stop key on the control panel will not stop the drive. To stop the drive using the
control panel, first press the LOC/REM key and then the stop key .
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