3.3.1. Removal of Knockouts for Extra Cables
1.
Remove the cable entry from the adjustable frequency drive (prevent foreign parts from
falling into the adjustable frequency drive when removing knockouts)
2.
The cable entry must be supported around the knockout you intend to remove.
3.
The knockout can now be removed with a strong mandrel and a hammer.
4.
Remove burrs from the hole.
5.
Mount cable entry on adjustable frequency drive.
3.3.2. Connection to Line Power and Grounding
NOTE
The plug connector for power is pluggable on the FC 300 up to 10 hp [7.5 kW].
1.
Insert the two screws into the de-coupling plate, and then slide it into place and tighten
the screws.
2.
Make sure the FC 300 is properly grounded. Connect to the ground connection (terminal
95). Use the screw from the accessory bag.
3.
Place plug connector 91(L1), 92(L2), 93(L3) from the accessory bag onto the terminals
labeled MAINS at the bottom of the FC 300.
4.
Attach the line wires to the line power plug connector.
5.
Support the cable with the enclosed supporting brackets.
NOTE
Make sure that the line voltage corresponds to the given line voltage on the FC 300
nameplate.
IT Line
Do not connect 400 V adjustable frequency drives with RFI filters to line supplies
with a voltage between phase and ground of more than 440 V.
The ground connection cable cross-section must be at least 0.016 in.
2
[10 mm
2
] or
2 x rated line wires terminated separately according to EN 50178.
The line connection is fitted to the line switch if this is included.
3. How to Install
VLT
®
AutomationDrive FC 300 Instruction
Manual
22
MG.33.A9.22 - VLT is a registered Danfoss trademark
3
