Danfoss VLT FC Series Service Manual page 214

D2h/D4h/D7h/D8h/J9 Unit Dis...
11.2.18.2 With Optional Brake
To remove or reinstall the DC bus rails with optional brake,
use the following steps. Refer to Illustration 11.12.
Disassembly
1. Remove the power card mounting plate. Refer to
chapter 11.2.3 Power Card Mounting Plate.
2. Remove the power terminal mounting plate. Refer
to chapter 11.2.11 Power Terminal Mounting Plate.
3. Remove 2 screws (T40) at the top end of the DC
bus rails, 1 per bus rail.
4. Remove 4 nuts (10 mm) from the lower end of
the DC bus rails, 2 per bus rail.
5. Remove 1 nut (13 mm) from the DC(+) bus rail,
near the center.
6. Remove 1 screw (T40) from the DC(-) bus rail,
near the center.
7. Remove the gate drive card. Refer to
chapter 11.2.14 Gate Drive Card.
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VLT FC Series, D1h–D8h, Da2/Db2/Da4/Db4, E1h–E4h, J8/J9
Reassembly
Tighten hardware according to chapter 14.1 Fastener Torque
Ratings.
1.
2.
3.
4.
5.
6.
7.
Danfoss A/S © 02/2019 All rights reserved.
Replace the gate drive card. Refer to
chapter 11.2.14 Gate Drive Card.
Fasten 1 screw (T40) in the DC(-) bus rail, near
the center.
Fasten 1 nut (13 mm) in the DC(+) bus rail, near
the center.
Secure 2 screws (T40) in the top end of the DC
bus rails, 1 per bus rail.
Secure 4 nuts (10 mm) in the lower end of the
DC bus rails, 2 per bus rail.
Replace the power terminal mounting plate. Refer
to chapter 11.2.11 Power Terminal Mounting Plate.
Replace the power card mounting plate. Refer to
chapter 11.2.3 Power Card Mounting Plate.
MG94A502