Danfoss VLT FC Series Service Guide

13.2.7 Inrush Card Frame and Rectier Bus Plates
To remove or reinstall the inrush card frame and the
rectier bus plates, use the following steps. Refer to
Illustration 13.6.
Disassembly
1. Remove the inrush card. Refer to
chapter 13.2.6 Inrush Card.
2. Remove 3 nuts (7 mm), 1 from each inrush
busbar, and remove the busbars.
3. Remove 4 nuts (7 mm) from the plastic inrush
card frame, and remove the frame.
4. Remove 4 screws (T40), 1 from each SCR module
and 1 from the DC coil. The screw in the DC coil
is a smaller diameter.
5. If load share/regen option is present, remove 2
additional screws (T40). See Illustration 13.5.
6. Remove the rectier(-) bus plate from the drive.
7. Remove the insulator sheet.
8. Remove 4 screws (T40), 1 from each SCR module
and 1 from the DC coil. Remove the
rectier(+)
bus plate from the drive.
Reassembly
Tighten fasteners according to chapter 14.1 Fastener Torque
Ratings.
1. Place the rectier(+) bus plate in its original
position. Secure with 4 screws (T40), placing the
smaller screw at the top of the bus plate.
2. Place the insulator sheet on the bus plate
alignment pins.
3. Place the rectier(-) bus plate in its original
position. Secure with 4 screws (T40), placing the
smaller screw at the top of the bus plate.
4. If load share/regen option is present, secure 2
additional screws (T40). See Illustration 13.5.
5. Replace the plastic inrush card frame, and secure
the frame with 4 nuts (7 mm).
6. Replace the 3 inrush busbars. Secure with 3 nuts
(7 mm), 1 in each busbar.
7. Reinstall the inrush card.
E1h–E4h Drive Disassembly a... Service Guide
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Danfoss VLT FC Series Specifications

General

Brand	Danfoss
Model	VLT FC Series
Category	DC Drives
Language	English