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8.1.1 Removal of Knockouts for Extra Cables
1.
Remove the cable entry from the adjustable frequency drive (this prevents 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.
8.1.2 Connection to Line Power and Grounding
NOTE!
The plug connector for power is plugable on adjustable frequency drives up to 10 hp [7.5 kW].
1.
Insert the two screws into the de-coupling plate, slide it into place and tighten the screws.
2.
Make sure the adjustable frequency drive is properly grounded. Connect to ground connection (terminal 95). Use 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 adjustable frequency
drive.
4.
Attach the line wires to the line power plug connector.
5.
Support the cable with the enclosed supporting brackets.
NOTE!
Ensure that AC line voltage corresponds to the AC line voltage on the nameplate.
IT Line Power
Do not connect 400 V adjustable frequency drives with RFI filters to line power 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 power wires terminated separately
according to EN 50178.
The AC line input connections are fitted to the line power switch if this is included.
8 Electrical Installation
FC 300 Design Guide
8-2
MG.33.BC.22 - VLT
®
is a registered Danfoss trademark
8