Safety Instructions - Danfoss VLT Automation Drive FC 300 Operating Instructions Manual

2. Safety Instructions and General Warning
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2.1.3. Safety Instructions

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2.1.4. General Warning
2.1.5. Before Commencing Repair Work
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Installation in high altitudes
At altitudes above 2 km, please contact Danfoss Drives regarding PELV.
Make sure the frequency converter is properly connected to earth.
Protect users against supply voltage.
Protect the motor against overloading according to national and local regulations.
Motor overload protection is not included in the default settings. To add this function,
Motor thermal protection
set parameter 1-90
North American market: ETR functions provide class 20 motor overload protection, in
accordance with NEC.
The earth leakage current exceeds 3.5 mA.
The [OFF] key is not a safety switch. It does not disconnect the frequency converter from
mains.
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.
When using the frequency converter: wait at least 40 minutes.
Shorter time is allowed only if indicated on the nameplate for the specific unit.
Leakage Current
The earth leakage current from the frequency converter exceeds 3.5 mA. To ensure
that the earth cable has a good mechanical connection to the earth connection (ter-
minal 95), the cable cross section must be at least 10 mm
terminated separately.
Residual Current Device
This product can cause a D.C. current in the protective conductor. Where a residual
current device (RCD) is used for extra protection, only an RCD of Type B (time de-
layed) shall be used on the supply side of this product. See also RCD Application
Note MN.90.Gx.02 (x=version number).
Protective earthing of the frequency converter and the use of RCD's must always
follow national and local regulations.
Disconnect the frequency converter from mains
Wait for discharge of the DC-link. See period of time on the warning label.
Disconnect DC bus terminals 88 and 89
Remove motor cable
MG.33.U1.02 - VLT
Operating Instructions High Power
ETR trip
to value or
2
® is a registered Danfoss trademark
®
VLT Automation Drive FC 300
ETR warning
. For the
or 2 rated earth wires