Decentral Solutions
Introduction to FCD
300
■
High voltage warning
The voltage of the adjustable frequency
drive is dangerous whenever the drive is
connected to electrical current. Incorrect
fitting of the motor or adjustable frequency drive may
cause damage to the equipment, serious injury or
death. Consequently, it is essential to comply with
the instructions in this manual as well as local and
national rules and safety regulations.
■
These rules concern your safety
1. The variable frequency drive must be disconnected
from the AC supply if repair work is to be
carried out. Check that the electrical supply
has been disconnected and that the prescribed
time has passed before removing the inverter
part from the installation
2. The [STOP/RESET] key on the optional control
panel does not disconnect the equipment from AC
supply and is thus not to be used as a safety switch.
3. The unit must be properly connected to the
ground, the user must be protected against
the supply voltage and the motor must be
protected against overloading pursuant to prevailing
national and local regulations.
4. The ground leakage currents are higher than 3.5 mA.
5. Protection against motor overload is not included
in the factory setting. If this function is required,
set parameter 128
Motor thermal protection
to
data value
ETR trip
or data value
ETR warning
. For
the North American market: The ETR functions
provide overload protection of the motor, class
20, in accordance with NEC.
■
Warning against unintended start
1. The motor can be brought to a stop by means of
digital commands, bus commands, references
or a local stop, while the variable frequency
drive is connected to AC line. If personal safety
considerations make it necessary to ensure
that no unintended start occurs, these stop
functions are not sufficient.
2. While parameters are being changed, the motor may
start. Consequently, the stop key [STOP/RESET] on
the optional control panel must always be activated,
following which data can be modified.
3. A motor that has been stopped may start if faults
occur in the electronics of the variable frequency
drive, or if a temporary overload or a fault in the
supply AC line or the motor connection ceases.
195NA194.10
Warning:
It can be extremely dangerous to touch the electrical parts
even when the AC line supply has been disconnected.
For FCD 300: wait at least 4 minutes.
MG.90.F2.22 - VLT is a registered Danfoss trademark
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