Removal Of Knockouts For Extra Cables; Connection To Mains And Earthing - Danfoss VLT AutomationDrive FC 300 Design Manual

Electrical Installation
7.1.1 Removal of Knockouts for Extra
Cables
1. Remove cable entry from the frequency converter
(Avoiding foreign parts falling into the frequency
converter when removing knockouts)
2. Cable entry has to 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 frequency converter.

7.1.2 Connection to Mains and Earthing

NOTE
The plug connector for power is plugable on frequency
converters up to 7.5 kW.
1. Fit the two screws in the de-coupling plate, slide
it into place and tighten the screws.
2. Make sure the frequency converter is properly
earthed. Connect to earth 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 labelled
MAINS at the bottom of the frequency converter.
4. Attach mains wires to the mains plug connector.
5. Support the cable with the supporting enclosed
brackets.
NOTE
Check that mains voltage corresponds to the mains
voltage of the name plate.
CAUTION
IT Mains
Do not connect 400 V frequency converters with RFI-filters
to mains supplies with a voltage between phase and earth
of more than 440 V.
CAUTION
The earth connection cable cross section must be at least
2
10mm or 2 x rated mains wires terminated separately
according to EN 50178.
The mains connection is fitted to the mains switch if this is
included.
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®
VLT AutomationDrive FC 300 Design Guide, 0.25-75 kW
3 Phase
power
input
Illustration 7.1 Mains Connection
Mains connection for frame sizes A1, A2 and A3:
Illustration 7.2 Fitting the Mounting Plate
Illustration 7.3 Tightening the Earth Cable
®
MG33BE02 - VLT is a registered Danfoss trademark
91 (L1)
92 (L2)
93 (L3)
95 PE
113
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