Danfoss VLT 2800 Series Operating Instructions Manual page 3

å High Voltage Warning
Rotating shafts and electrical equipment
can be hazardous. Therefore, it is strongly
recommended that all electrical work
conform to National Electrical Code (NEC) and all local
regulations. Installation, start-up and maintenance
should be performed only by qualified personnel.
Motor control equipment and electronic controls are
connected to hazardous line voltages. When servicing
å Warnings Against Unintended Start
1. While the drive is connected to the AC line, the
motor can be brought to a stop by means of
external switch closures, serial bus commands or
references. If personal safety considerations make
it necessary to ensure that no unintended start
occurs, these stops are not sufficient.
2. During programming of parameters, the motor
may start. Be certain that no one is in the area
å Electrostatic discharge (ESD)
Electronic components are sensitive to
electrostatic discharge (ESD). ESD can
reduce performance or destroy sensitive
electronic components. Follow proper ESD procedures
during installation or servicing to prevent damage.
MG.10.S1.22 - VLT is a registered Danfoss trademark
VLT® Serie 2800 and VLT® Serie 6000 Modbus RTU
drives and electronic controls, there will be exposed
components at or above line potential. Extreme care
should be taken to protect against shock. Stand on
an insulating pad and make it a habit to use only one
hand when checking components. Always work with
another person in case of an emergency. Disconnect
power whenever possible to check controls or to
perform maintenance. Be sure equipment is properly
grounded. Wear safety glasses whenever working
on electric control or rotating equipment.
of the motor or adjustable frequency drive driven
equipment when changing parameters
3. A motor that has been stopped may start
unexpectedly if faults occur in the electronics of the
drive, or if an overload, a fault in the supply AC line or
a fault in the motor connection or other fault clears.
4. If the "Local/Hand" key is activated, the motor
can only be brought to a stop by means of the
"Stop/Off" key or an external safety interlock.
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