Ac Input Busbars - Danfoss VLT FC Series Service Manual

D2h/D4h/D7h/D8h/J9 Unit Dis...

11.2.5 AC Input Busbars

To remove the AC input busbars, use the following steps.
The AC input busbars can look different when the drive
includes extra input options, such as RFI filter or mains
fuses. Illustration 11.3 shows the AC input busbars
configured to include mains fuses.
1. Remove the air baffle by removing 4 screws (T25)
and 2 nuts (13 mm).
2. The next step differs based on the input options
present in the drive. Select the appropriate
procedure for the drive:
No Options
1. Remove 3 nuts (13 mm), 1 from the top of each
AC input busbar.
2. Remove 3 nuts (13 mm), 1 from the bottom of
each AC input busbar.
3. Remove the busbars from the drive module.
AC fuses only
1. Remove AC fuses by removing 6 nuts (13 mm), 1
from each end of the 3 fuses.
11 11
2. Remove 3 nuts (13 mm), 1 from the top of each
AC input busbar.
3. Remove the AC input busbars from the drive
module.
192
•
No options
•
Mains fuses only
•
RFI filter only
•
Mains fuses and RFI filter
Danfoss A/S © 02/2019 All rights reserved.
®
VLT FC Series, D1h–D8h, Da2/Db2/Da4/Db4, E1h–E4h, J8/J9
RFI filter only
1.
2.
3.
4.
5.
AC fuses and RFI filter
1.
2.
3.
4.
5.
Reassembly
Reinstall in reverse order of these procedures. Tighten
fasteners according to chapter 14.1 Fastener Torque Ratings.
Remove 3 nuts (13 mm) at the top of the RFI
filter, 1 per bus phase.
Remove 6 nuts (13 mm) at the bottom of the RFI
filter, 2 per bus phase
Remove 4 thread-cutting screws (T20), which
connect the RFI filter to the side channels of the
drive module.
Unplug the RFI cable from the MK100 connector
on the RFI printed circuit card.
Lift the RFI filter from the drive module.
Remove AC fuses by removing 6 nuts (13 mm), 1
from each end of the 3 fuses.
Remove 3 nuts (13 mm) from the top of the RFI
filter, 1 per bus phase.
Remove 4 thread-cutting screws (T20), which
connect the RFI filter to the side channels of the
drive module.
Unplug the RFI cable from the MK100 connector
on the RFI printed circuit card.
Lift the RFI filter from the drive module.
MG94A502