FC 300 Operating Instructions
Safety Instructions and General Warning
High Voltage Warning
The voltage of the FC 300 is dangerous whenever the converter is connected to mains. Incorrect
fitting of the motor or VLT 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 and
national rules and safety regulations.
Safety Instructions
•
Make sure the FC 300 is properly connected to earth.
•
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 settings. To add 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 earth 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 mains
2.
Disconnect DC bus terminals 88 and 89
3.
Wait at least 4 minutes
4.
Remove motor plugs
Avoid Unintended Start
While FC 300 is connected to mains, the motor can be started/stopped using digital commands, bus
commands, references or via the LCP.
•
Disconnect the FC 300 from mains 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 fault, temporary overload, a fault in the mains supply, or
lost motor connection may cause a stopped motor to start.
7
MG.33.A2.02 - VLT is a registered Danfoss trademark