Removal Of Knockouts For Extra Cables; Connection To Line And Grounding - Danfoss VLT FC 102 Series Design Manual

Electrical Installation
6.1.2 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. Cable entry has to be supported around the
knockout to be removed.
3. The knockout can now be removed with a strong
mandrel and a hammer.
4. Remove burrs from the hole.
6 6
5. Mount the cable entry on the adjustable
frequency drive.

6.1.3 Connection to Line and Grounding

NOTICE!
The plug connector for power can be plugged on
adjustable frequency drives of up to 10 hp [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 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.
NOTICE!
Ensure that AC line voltage corresponds to the AC line
voltage on the nameplate.
CAUTION
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.
94
Design Guide
The ground connection cable cross-section must be at
least 10 mm
separately according to EN 50178.
The AC line input connection is fitted to the line power
switch if this is included.
Figure 6.1 AC line input connections
AC line input connection for enclosure types A1, A2
and A3:
Figure 6.2 Fitting the Mounting Plate
Danfoss A/S © Rev. 06/2014 All rights reserved.
CAUTION
2 or 2 x rated line power wires terminated
MG11BC22