Illustration 3.81: Mounting of EMC shield.
3.5.12. Mains connection
Mains must be connected to terminals 91, 92 and 93. Earth/ground is connected to the terminal
to the right of terminal 93.
Terminal No.
Function
91, 92, 93
94
Mains R/L1, S/L2, T/L3
Ground/Earth
Check the name plate to ensure that the mains voltage of the frequency converter
matches the power supply of your plant.
Ensure that the power supply can supply the necessary current to the frequency converter.
If the unit is without built-in fuses, ensure that the appropriate fuses have the correct current
rating.
3.5.13. External Fan Supply
In case the frequency converter is supplied by DC or if the fan must run independently of the
power supply, an external power supply can be applied. The connection is done to the power card.
Terminal No.
Function
100, 101
102, 103
Auxiliary supply S, T
Internal supply S, T
The connector located on the power card provides the connection of line voltage for the cooling
fans. The fans are connected from factory to be supplied form a common AC line (jumpers be-
tween 100-102 and 101-103). If external supply is needed, the jumpers are removed and the
supply is connected to terminals 100 and 101. A 5 Amp fuse should be used for protection. In UL
applications this should be LittelFuse KLK-5 or equivalent.
3. How to Install
VLT
®
Automation Drive FC 300
Operating Instructions High Power
56
MG.33.U1.02 - VLT
®
is a registered Danfoss trademark
3
