Danfoss VLT 5000 FLUX, Руководство по эксплуатации, Страница: 4 / 158

VLT
®
5000 FLUX
The voltage of the frequency converter
is dangerous whenever the equipment
is connected to mains. Incorrect
installation of the motor or the frequency converter
may cause damage to the equipment, serious
personal injury or death.
Consequently, the instructions in this manual,
as well as national and local rules and safety
regulations, must be complied with.
■
Safety regulations
1. The frequency converter must be disconnected
from mains if repair work is to be carried out. Check
that the mains supply has been disconnected
and that the necessary time has passed before
removing motor and mains plugs.
2. The [STOP/RESET] key on the control panel of
the frequency converter does not disconnect
the equipment from mains and is thus not to
be used as a safety switch.
3. Correct protective earthing of the equipment
must be established, the user must be protected
against supply voltage, and the motor must be
protected against overload in accordance with
applicable national and local regulations.
4. The earth leakage currents are higher than 3.5 mA.
5. Protection against motor overload is not included
in the factory setting. If this function is desired,
set parameter 128 to data value ETR trip or
data value ETR warning .
Note: The function is initialised at 1.16 x rated
motor current and rated motor frequency. For
the North American market: The ETR functions
provide class 20 motor overload protection
in accordance with NEC.
6. Do not remove the plugs for the motor and main
supply while the frequency converter is connected
to mains. Check that the mains supply has been
disconnected and that the necessary time has
expired before removing motor and mains plugs.
7. Please note that the frequency converter has more
voltage inputs than L1, L2 and L3, when loadsharing
(linking of DC intermediate circuit) and external 24 V
DC have been installed. Check that all voltage inputs
have been disconnected and that the necessary
time has passed before repair work is commenced.
■
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 frequency
converter is connected to mains.
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] 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 frequency converter,
or if a temporary overload or a fault in the supply
mains or the motor connection ceases.
■
Installation of mechanical brake
Do not connect a mechanical brake to the output
from the frequency converter before the relevant
parameters for brake control are parameterised.
(Selection of output in parameter 319, 321,
323 or 326 and cut-in current and frequency
in parameter 223 and 225).
■
Use on isolated mains
See section RFI Switch regarding use on isolated mains.
It is important to follow the recommendations regarding
installation on IT-mains, since sufficient protection
of the complete installation must be observed.
Not taking care using relevant monitoring devices
for IT-mains may result in damage.
MG.55.A6.02 - VLT is a registered Danfoss trademark
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