Motor Start; Safety Regulations; Warning Against Unintended Start - Danfoss VLT 2800 Series Operating Instructions Manual

Set the control location to Local [1].
Local/remote operation = Local [1] Par. 002
Set the motor speed by adjusting the Local refer-
ence
Local reference Parameter 003

Motor start

Press [Start] to start the motor. Set the motor speed by
adjusting parameter 003 Local reference.
Check whether the direction of rotation of the motor
shaft is clockwise. If not, exchange any two phases on
the motor cable. Press [STOP/RESET] to stop the mo-
tor. Press [QUICK MENU] to return to display mode.
(QUICK MENU] + [+] keys must be pressed simulta-
neously to give access to all parameters.

Safety regulations

The voltage of the frequency converter
can be fatal whenever it is connected to
mains. Incorrect installation of the motor
or the frequency converter may lead to
damage to the equipment, serious per-
sonal injury or death.
Consequently, the provisions of this Quick Setup, as
well as national and local rules and safety regulations,
must be complied with.
Touching the electrical parts may be fatal, even after
the equipment has been disconnected from mains:
wait at least 4 min.
1. The mains supply to the frequency converter
must be disconnected if repair work is to be
carried out.
2. The [STOP/RESET] key on the control panel
of the frequency converter does not discon-
nect the mains supply and is thus not to be
used as a safety switch.
3. Correct protective earthing of the unit 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 current is higher than 3.5
mA.
5. Protection against motor overload is not in-
cluded in the factory setting. If this function is
required, set parameter 128 Motor thermal
4
®
VLT 2800 Series
protection to data value ETR Trip or ETR
Warning.
6. Check that the mains supply has been dis-
connected before removing the motor and
mains plugs.

Warning against unintended start

The motor can be brought to a stop by
means of digital commands, bus com-
mands, references or local stop, while the
frequency converter is connected to
mains. If personal safety considerations
make it necessary to ensure that no unin-
tended start occurs, these stops are not
sufficient.
While parameters are being programmed,
the motor may start. Consequently, the
stop key [STOP/RESET] must always be
activated, following which data can be
modified.
A motor that has been stopped may start
if faults occur in the electronics of the fre-
quency converter, or if a temporary over-
load, a fault in the supply mains or a fault
in the motor connection ceases.
NB!
Indicates something to be noted by the
reader.
Indicates a general warning.
Indicates a high-voltage warning.
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MG.27.A2.02 - VLT is a registered Danfoss trademark