Figure 10: OptiSpeed system architecture (Model VSD 790 shown, similar to 608, 658, and 704
models)
Callout Description
1 Filter line voltage isolation board
2 Drive logic board
3 Filter power unit
4 Filter logic board
5 SCR trigger board
6 Service hole
7 Filter input current transformer
8 Drive power unit
9 Drive output current transformer
10 Cooling coil fan
29Liquid-Cooled OptiSpeed Compressor Speed Drive
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