With Optional Brake; Igbts; Ac Power Size - Danfoss VLT FC 100 Service Manual

Disassembly and Assembly In...
1. Remove the power card mounting plate in
accordance with chapter 7.4.3 Power Card
Mounting Plate.
2. Remove the power terminal mounting plate in
accordance with chapter 7.4.10 Power Terminal
Mounting Plate.
3. Remove the two screws (T40) at the top end of
the bus bar, one per bus bar.
4. From the other end of the bus bar, remove the
four nuts (0.4 in [10 mm]), two per bus bar.
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.

7.4.18.2 With Optional Brake

7 7
333 mm (13.11 In)
Figure 7.20 DC bus rails with brake option
1 (+) DC bus rail
2 (-) DC bus rail
3 T40 screw
4 13 mm nut
5 IGBT gate drive card
Table 7.20 Legend to Figure 7.20
1. Remove the power card mounting plate in
accordance with chapter 7.4.3 Power Card
Mounting Plate.
2. Remove the power terminal mounting plate in
accordance with chapter 7.4.10 Power Terminal
Mounting Plate.
110
Service Manual
378 mm(14.88 In)
353 mm (13.90 In)
322 mm (12.68 In)
9 mm (0.35 In)
9 mm (0.35 In)
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
3. Remove the 2 screws (T40) at the top end of the
bus bar, one per bus bar.
4. From the other end of the bus bar, remove the 4
nuts (10 mm), two per bus bar.
5. Remove 1 nut (13 mm) on the (+) DC bus rail,
near the center.
6. Remove 1 screw (T40) from the (-) DC bus rail,
near the center.
7. Remove the IGBT gate drive card in accordance
with chapter 7.4.14 IGBT Gate Drive Card.
Reinstall in reverse order of this procedure and tighten
hardware according to chapter 1.7 General Torque
Tightening Values.

7.4.19 IGBTs

Figure 7.21 IGBTs
1 (+) DC bus rail
2 IGBT
3 IGBT output bus bar
4 T25 IGBT mounting screw
5 T40 IGBT terminal screw
Table 7.21 Legend to Figure 7.21
7.4.19.1 400 V AC Power Size
1. Remove the gate drive card in accordance with
chapter 7.4.14 IGBT Gate Drive Card.
2. Remove the balance/high frequency card in
accordance with chapter 7.4.13 Balance/High
Frequency Card.
3. Remove the DC bus rails in accordance with
chapter 7.4.18 DC Bus Rails.
6 (-) DC bus bar
7 T40 IGBT terminal
screw
8 0.4 in [10 mm] nut
9 Snubber capacitor
10 T20 screw
MG94A222