Danfoss VLT FC Series, Руководство по обслуживанию

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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
•
Mains fuses only
•
RFI filter only
•
Mains fuses and RFI filter
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.
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.
RFI filter only
1. Remove 3 nuts (13 mm) at the top of the RFI
filter, 1 per bus phase.
2. Remove 6 nuts (13 mm) at the bottom of the RFI
filter, 2 per bus phase
3. Remove 4 thread-cutting screws (T20), which
connect the RFI filter to the side channels of the
drive module.
4. Unplug the RFI cable from the MK100 connector
on the RFI printed circuit card.
5. Lift the RFI filter from the drive module.
AC fuses and RFI filter
1. Remove AC fuses by removing 6 nuts (13 mm), 1
from each end of the 3 fuses.
2. Remove 3 nuts (13 mm) from the top of the RFI
filter, 1 per bus phase.
3. Remove 4 thread-cutting screws (T20), which
connect the RFI filter to the side channels of the
drive module.
4. Unplug the RFI cable from the MK100 connector
on the RFI printed circuit card.
5. Lift the RFI filter from the drive module.
Reassembly
Reinstall in reverse order of these procedures. Tighten
fasteners according to
chapter 14.1 Fastener Torque Ratings .
D2h/D4h/D7h/D8h/J9 Unit Dis...
VLT
®
FC Series, D1h–D8h, Da2/Db2/Da4/Db4, E1h–E4h, J8/J9
192 Danfoss A/S © 02/2019 All rights reserved. MG94A502
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