Danfoss VLT AutomationDrive FC 300 Operating Instructions Manual page 8

2. Safety Instructions and General Warning
2
Safety Regulations
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2.1.3. General Warning
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Installation in high altitudes
At altitudes above 2 km, please contact Danfoss Drives regarding PELV.
The voltage of the frequency converter is dangerous whenever connected to mains.
Incorrect installation of the motor, frequency converter or fieldbus may cause dam-
age to the equipment, serious personal injury or death. Consequently, the instruc-
tions in this manual, as well as national and local rules and safety regulations, must
be complied with.
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.
The [STOP/RESET] key on the control panel of the frequency converter does not dis-
connect the equipment from mains and is thus not to be used as a safety switch.
Correct protective earthing of the equipment must be established, the user must be pro-
tected against supply voltage, and the motor must be protected against overload in
accordance with applicable national and local regulations.
The earth leakage currents are higher than 3.5 mA.
Protection against motor overload is not included in the factory setting. If this function
is desired, set par. 1-90 to data value ETR trip or data value ETR warning.
Do not remove the plugs for the motor and mains supply while the 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.
Please note that the frequency converter has more voltage inputs than L1, L2 and L3,
when load sharing (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 commencing repair work.
Warning:
Touching the electrical parts may be fatal - even after the equipment has been dis-
connected from mains.
Also make sure that other voltage inputs have been disconnected, such as load-
sharing (linkage of DC intermediate circuit), as well as the motor connection for
kinetic back-up.
Using VLT ® AutomationDrive FC 300: wait at least 15 minutes.
Shorter time is allowed only if indicated on the nameplate for the specific unit.
MG.33.A9.02 - VLT is a registered Danfoss trademark
®
VLT AutomationDrive FC 300 Operating
Instructions