Danfoss VLT FC Series Service Guide

11.2.5 AC Input Busbars
To remove the AC input busbars, use the following steps.
The AC input busbars can look dierent when the drive
includes extra input options, such as RFI lter or mains
fuses. Illustration 11.3 shows the AC input busbars
congured to include mains fuses.
1. Remove the air
bae by removing 4 screws (T25)
and 2 nuts (13 mm).
2. The next step diers based on the input options
present in the drive. Select the appropriate
procedure for the drive:
•
No options
•
Mains fuses only
•
RFI lter only
•
Mains fuses and RFI lter
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 lter only
1. Remove 3 nuts (13 mm) at the top of the RFI
lter, 1 per bus phase.
2. Remove 6 nuts (13 mm) at the bottom of the RFI
lter, 2 per bus phase
3. Remove 4 thread-cutting screws (T20), which
connect the RFI lter 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 lter from the drive module.
AC fuses and RFI lter
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
lter, 1 per bus phase.
3. Remove 4 thread-cutting screws (T20), which
connect the RFI lter 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 lter 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
1111

Danfoss VLT FC Series Specifications

General

Category	DC Drives
Series	VLT FC Series
Output Voltage	0-100% of input voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Short circuit, Overtemperature, Motor overload
Communication Interfaces	CANopen, PROFIBUS, Ethernet
Cooling Method	liquid-cooled
Enclosure Rating	IP20, IP21, IP55
Ambient Temperature	-10°C to +40°C (14°F to 104°F) without derating