Introduction; General Warning - Danfoss VLT 5000 Series Manual

I General warning
The voltage of the frequency converter
is dangerous whenever the converter is
connected to mains. Incorrect fitting of the
motor or frequency converter 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.
1. The VLT 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] or [OFF/STOP] key on the
control panel of the VLT 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. On VLT 6000, set parameter 117 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
(see Operating manual).
Touching the electrical parts may be fatal - even after the
equipment has been disconnected from mains.
Also make sure that other voltage inputs have been disconnected,
such as external 24 V DC, load-sharing (linkage of DC intermediate
circuit), as well as the motor connection for kinetic back-up.
Using VLT 5300-5500 / 6350-6550 /8350-8550:
2
VLT
6. Do not remove the plugs for the motor and
7. Please note that the VLT frequency converter has
I Warning against unintended start
1. The motor can be brought to a stop by
2. While parameters are being changed, the
3. A motor that has been stopped may start if faults
Warning:
wait at least 15 minutes
®
5000/6000/8000 Series
For the North American market: The ETR
functions provide class 20 motor overload
protection in accordance with NEC.
mains supply while the VLT frequency converter
is connected to mains. Check that the mains
supply has been disconnected and that the
necessary time has passed before removing
motor and mains plugs.
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.
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.
motor may start. Consequently, the stop key
[STOP/RESET] or [OFF/STOP] must always be
activated, following which data can be modified.
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.
MG.56.A2.02 - VLT is a registered Danfoss trademark