FC 300 Instruction Manual
Safety Instructions and General Warning
FC 300
Instruction Manual
Software version: 3.5x
This instruction manual c an be used for all FC 300 Series a djustable frequency drives (AFD)
with software version 3.5x.
Thesoftwareversionnumbercanbeseenfromparameter15-43.
" High voltage warning
The voltage of the FC 300 is dangerous whenever the converter is connected to electrical
power. Incorrectfittingofthemotororadjustablefrequencydrivemaycausedamageto
the equipment, serious injury or death. Consequently, it is essential to c omply with the
instructions i n this manual as well as local and n ational rules and safety regulations.
" Safety Instr uc tion s
• Make sure the FC 300 is properly connected to ground.
• Do not remove mains 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 included in the default setti ngs. To add this function, se t p arameter
1-90 Motor thermal protection to value ETR trip or ETR warning. For the North American market:
ETR functions provide class 20 m otor overload protection, in accordance with NEC.
• The ground leakage current exceeds 3.5 mA.
• The [OFF] key is n ot a safety switch. It does not disconnect the FC 300 from mains.
" Before Commencing Repair Work
1. Disconnect FC 300 from AC line.
2. Disconnect DC bus terminals 88 a n d 89
3. Wait at least 15 minutes
4. Remove motor cable
" High start torque
While FC 300 is connected to AC line, the motor can be started /stopped using digital
commands, bus c ommands, references or a local stop.
• Disconnect the FC 300 from AC line whenever personal safety considerations make
it necessary to avoid unintended start.
• To avoid unintended start, always activate the [OFF] key before changing parameters.
• Unless terminal 37 is turned off, an electronic faul t, temporary overload, a fault in the AC line
supply, or lost motor connection m ay cause a stopped moto r to start.
8
MG.33.A6.22 - VLT is a registered Danfoss trademark
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