Disassembly in E2h/E4h drives
In E2h/E4h drives, the DC snubber capacitors are located
under the Y-shaped busbars. Refer to Illustration 13.19.
1. Remove the input plate. Refer to
chapter 13.2.9 Input Plate with Busbars and
chapter 13.2.10 Split Input Plate with Options.
2. Remove 3 nuts (13 mm), 1 at the top of each
current sensor busbar.
3. Remove 6 nuts (13 mm), 2 at the top of each
IGBT output busbar. Remove the IGBT output
busbars from the drive.
4. Remove 12 nuts (40 mm), 4 each DC snubber
capacitor pair.
5. Remove the 3 DC snubber capacitor pairs from
the drive.
Reassembly in E2h/E4h drives
Tighten fasteners according to chapter 14.1 Fastener Torque
Ratings.
1. Place the DC snubber capacitor pairs in the drive.
2. Secure 12 nuts (40 mm), 4 in each DC snubber
capacitor pair.
3. Position the IGBT output busbars in the drive.
Secure 6 nuts (13 mm), 2 at the top of each IGBT
output busbar.
4. Secure 3 nuts (13 mm), 1 at the top of each
current sensor busbar.
5. Replace the input plate. Refer to
chapter 13.2.9 Input Plate with Busbars and
chapter 13.2.10 Split Input Plate with Options.
1 Y-shaped busbar 3 DC snubber capacitor pair
2 Nut (40 mm) 4 DC bus plates
Illustration 13.19 DC Snubber Capacitors in E2h/E4h Drives
E1h–E4h Drive Disassembly a...
VLT
®
FC Series, D1h–D8h, Da2/Db2/Da4/Db4, E1h–E4h, J8/J9
296 Danfoss A/S © 02/2019 All rights reserved. MG94A502
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