Inrush Card; Igbt Gate Drive Card; Scr Input Bus Bars - Danfoss VLT FC 100 Service Manual

Disassembly and Assembly In...

7.3.13 Inrush Card

1. Remove the DC bus rails in accordance with
chapter 7.3.12 DC Bus Rails.
2. Unplug MK1802.
3. Remove five screws (T20).
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.
2
1 3
11
10
9
8
Figure 7.6 Inrush Card
1 Inrush card
2 T30 screw
3 (+) DC bus bar
4 T30 screw
5 T30 screw
6 (-) DC bus bar
Table 7.6 Legend to Figure 7.6
MG94A222
Service Manual
4
5
6
7
7 (-)DC bus bar DC Coil to
Capacitor Bank
8 0.4 in [10 mm] nut
9 (+)DC bus bar DC Coil to
Capacitor Bank
10 0.43 in [11 mm] threaded
standoff
11 Inrush Support Bracket
Danfoss A/S © Rev. 2014-02-10 All rights reserved.

7.3.14 IGBT Gate Drive Card

1. Remove the DC bus bars in accordance with
chapter 7.3.12 DC Bus Rails.
2. (Brake option only) Unplug MK201.
3. Unplug Connectors:
•
MK100
•
MK501
•
MK601
•
MK701
•
MK102
4. Remove six screws (T20 thread-forming).
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.

7.3.15 SCR Input Bus Bars

1. Remove the inrush card in accordance with
chapter 7.3.13 Inrush Card.
2. Remove three standoffs (0.4 in [11 mm] thread-
forming) one on each SCR AC input bus bar.
3. Remove the black plastic inrush support by
removing two screws (T25).
4. Remove three screws (T30) connecting the bus
bars to the SCR modules, one from each bus bar.
5. Remove bus bars.
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.
NOTICE!
Note for reassembly: Fasten all components hand-tight
and then place the inrush support to align all before
tightening the fasteners.
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