FC 300 Operating Instructions
Safety Instructions and General Warning
FC 300
Operating Instructions
Software version: 4.0x
These Operating Instructions can be used for all FC 300 frequency converters w ith software
version 4.0x.
Thesoftwareversionnumbercanbeseenfromparameter15-43.
" High Voltage Warning
The voltage of the FC 300 is dangerous whenever the converter is connected to mains.
Incorrect fitting of the motor or frequency converter may cause damage to the equipment,
serious injury or death. Consequently, it is essential to comply with the instructions in
this manual as well as local a nd national rules and safety regulations.
" Safety Instr uc tion s
• Make sure the FC 300 is properly connected to ea rth.
• Do not remove m ains plugs or motor plugs while the FC 300 is connected to mains.
• Protect users against supply voltage.
• Protect the motor against overloading according to national and local regulations.
• Motor overload protection is not i n cluded in the default settings. To ad d this function, set p a rameter
1-90 Motor thermal protection to value ET R trip or ETR warning. For the 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 FC 300 from mains.
General warning
Warning:
Touching the electrical parts may be fatal - even after the e quipment has
been disconnected 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 Automa ti onDrive FC 30 0: wait at least 15 minutes.
Shorter time is allowed only if indicated on the name plate for the specific unit.
Leakage Current
The earth leakage current from the FC 300 exceeds 3.5 mA. To ensure that the earth cable has
a good mechanical connection to the earth connection (t erm inal 95), the cable cross section
must be at least 10 mm
2
or 2 times rated earth wires 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 RC D of Type B (time delayed) shal l be used on the
supply side of this product. See also RCD Application Note MN.90.GX.02.
Protective earthing of the FC 300 and the use of RCD’s must always follow national and local regulations.
8
MG.33.A7.02 - VLT is a registered Danfoss trademark
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