Input Plate With Busbars - Danfoss VLT FC Series Service Manual

E1h–E4h Drive Disassembly a...

13.2.9 Input Plate with Busbars

CAUTION
COMPONENT WEIGHT
The input plate can weight up to 20 kg (44 lb), depending on the input options. To avoid injury, lift the plate only with
assistance.
Standard E1h–E4h drives include 3 input busbars mounted on a single input plate. Only IP00/IP20 drives without input
options have a single input plate, all others have 2 plates. To remove or reinstall the input plate with attached busbars, use
the following steps. Refer to Illustration 13.8.
If the drive includes optional components such as fuses, disconnect, or RFI filter, the input plate is split into an upper plate
and lower plate. To remove the split input plate and options, refer to chapter 13.2.10 Split Input Plate with Options.
Disassembly
The AC input busbars can remain attached when the input
plate is removed.
1. Unplug in-line connector attaching the mixing
fan cables to the fans on the back of the input
plate. E1h/E3h drives have 2 fans; E2h/E4h drives
have 1 fan.
2. Release the cables from the cable retaining clips.
3. Remove 3 nuts (17 mm) and bolts, 1 from each
input terminal connection (L1, L2, L3) at the
bottom of the AC input busbars.
4. Remove 6 nuts (13 mm), 2 from the upper end of
each AC input busbar.
5. Remove 10 nuts (8 mm) from the input plate
edges.
6. Lift the plate and attached busbars from the
drive.
MG94A502
Service Guide
NOTICE
UNIQUE TORQUE VALUES
Tighten nuts (8 mm), which attach the input plate to the
mounting rail, to the unique torque value specified in
the following steps. Tighten remaining fasteners
according to chapter 14.1 Fastener Torque Ratings.
Reassembly
1.
2.
3.
4.
5.
6.
Danfoss A/S © 02/2019 All rights reserved.
Position the input plate and attached busbars in
the drive.
Secure 10 nuts (8 mm) around the edges of the
input plate. Torque nuts that attach the input
plate to the mounting rail to 3.91 Nm (34.6 lb-in).
Reattach in-line connector attaching the mixing
fan cables to the fans on the back of the input
plate. E1h/E3h drives have 2 fans; E2h/E4h drives
have 1 fan.
Secure cables with cable retaining clips.
Secure 6 nuts (13 mm), 2 at the upper end of
each AC input busbar.
Secure 3 nuts (17 mm) and bolts, 1 for each input
terminal (L1, L2, L3) at the bottom of the AC
input busbars.
13 13
275