Danfoss VLT FC 300 Service Manual

7.4.5.2 RFI Only
1. Remove three nuts (0.5 in [13 mm]) at the top of
the RFI filter, one per bus phase.
2. Remove six nuts (0.5 in [13 mm]) at the bottom
of the RFI filter, two per phase.
3. Remove four mounting screws (T20 thread-
cutting) connecting the RFI filter to the side
channels of the adjustable frequency drive.
4. Remove the RFI filter and unplug the RFI cable
from MK100 on the printed circuit board
assembly.
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.
7.4.5.3
Fuses and RFI
1. Remove electrical fuses by removing six nuts (0.5
in [13 mm]), one at each end of each fuse.
2. Remove three nuts (0.5 in [13 mm]) at the top of
the RFI filter, one per phase.
3. Remove four mounting screws (T20 thread-
cutting) connecting the RFI filter to the side
channels of the adjustable frequency drive.
4. Remove the RFI filter and unplug the RFI cable
from MK100 on the printed circuit board
assembly.
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.
7.4.5.4
No Options
1. Remove three nuts (0.5 in [13 mm]) at the top of
the bus bars, one per phase.
2. Remove six nuts (0.5 in [13 mm]) at the bottom
of the bus bars, two per phase.
3. Remove the bus bars.
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.
7.4.6
Line Power Input Terminal Block
1. Disconnect the customer input power wiring.
2. Remove the AC input bus bars in accordance
with chapter 7.4.5 AC Input Bus Bars.
3. Remove the two screws (T25) at the bottom of
the terminal block.
4. Free current sensor wiring from the captive
retaining clips (not shown).
5. Remove the terminal by sliding it down to
disengage it from the metal clips holding it in
place.
Refer to Figure 7.13.
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.
7.4.7
EMC Shield
1. Remove one screw (T20).
2. Remove the EMC shield.
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.
7.4.8
Brake Terminal (optional)
1. Disconnect the customer brake wiring.
2. Remove the R(+) terminal by removing one screw
(T25 thread-forming) at the terminal block, and
one screw (T40).
3. Remove the R(-) terminal by removing one screw
(T25 thread-forming) at the terminal block, and
one nut (0.5 in [13 mm]).
4. Remove the brake terminal block by removing
two nuts (0.5 in [13 mm]).
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.
7.4.9
Motor Terminal Block
1. Remove the input terminal block in accordance
with chapter 7.4.6 Line Power Input Terminal Block
and the brake terminal (if equipped) in
accordance with chapter 7.4.8 Brake Terminal
(optional).
2. Disconnect customer motor wiring.
3. Remove the U output bus bar by removing the
one screw (T25 thread-forming) in the center of
the bus bar and the one bolt (T40) at the current
sensor end.
Disassembly and Assembly In...
Service Manual
MG94A222 Danfoss A/S © Rev. 2014-02-10 All rights reserved. 105
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Danfoss VLT FC 300 Specifications

General

Brand	Danfoss
Model	VLT FC 300
Category	DC Drives
Language	English