FC 300 Instruction Manual
Safety Instructions and General Warning
" 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 comply with the
instructions in this manual as well as local and national rules and safety regulations .
" Safety Instr uc tion s
• Make sure the FC 300 is properly conne cted 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 in clude d in the default settings. To ad d this function, set parameter
1-90 Motor thermal protection to value ETR trip or ETR warning. For the North American market:
ETR functions provide class 20 motor overload protection, in accordance with NEC.
• The ground leakage current exceeds 3.5 mA.
• The [OFF] key is not 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 an d 89
3. Wait at least 4 minutes
4. Remove motor plugs
" High start torque
While FC 300 is connected to AC line, the motor can be started/stoppe
dusingdigital
commands, bus commands, references or a loca l stop.
• Disconnect the FC 300 from AC line w hene ver pe rsonal safety considerations make
it necessary to avoid unintended start.
• To avoid unintended start, always activate the [OFF] key b
efore changing parameters.
• Unless terminal 37 is turned off, an electronic fault, temporary overload, a fault in the AC line
supply, or lost motor connection may cause a stopped motor to start.
" Safe Stop of FC 302
The FC 302 can perform the Designated Safety Function Uncontrolled Stopping by removal of power. (as
defined by draft IEC 61800-5-2) or Stop Category
0 (as defined in EN 6020 4-1). It is designed and approved
suitable for the requ irem ents of Safety Cate gory 3 in EN 954-1. This functional ity is called Safe Stop.
In order to install an d u se the Safe Stop function in accordance w ith the requirements of Safety
Category 3 in EN 954-1, the related information and instructions of the FC 300 Design Guide
MG.33.BX.YYmustbefollowed! Theinform
ation and instructio ns of the Instruction Manual a re
not sufficient for a correct and safe use of the Safe Stop functionality!
8
MG.33.A4.22 - VLT is a registered Danfoss trademark
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