13.2.8 SCR/Diode Modules
E1h–E4h drives have 3 SCR/diode modules. To remove or
reinstall an SCR/diode module, use the following steps.
Refer to Illustration 13.7.
Disassembly
1. Remove the inrush card frame and rectier bus
plates. Refer to chapter 13.2.7 Inrush Card Frame
and Rectier Bus Plates.
2. Remove the input plate option. Refer to
chapter 13.2.10 Split Input Plate with Options.
3. Remove 1 screw (T40), which connects the SCR
input busbar to the SCR.
4. Remove 1 nut (8 mm) from the SCR input busbar.
Remove the busbar from the drive.
5. Disconnect the cable from the SCR/diode module.
6. Remove 4 screws (T25), 1 from each corner of the
SCR/diode module.
7. Remove the SCR/diode module from the drive.
Reassembly
For reassembly, use the SCR/diode module spare part
instructions that come with the parts kit.
E1h–E4h Drive Disassembly a... Service Guide
MG94A502 Danfoss A/S © 02/2019 All rights reserved. 273
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