Safety Information; Warnings Against Unintended Start - Danfoss VLT 5000 Instruction Manual

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
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.
Touching electrical parts may be fatal, even after equipment has
been disconnected from AC line. To be sure that capacitors have
fully discharged, wait 14 minutes after power has been removed
before touching any internal component.
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 of the motor or
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.
Electronic components of BACLink portal 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.