Some background info and guesses are below:
From earlier posts:
This helps make sense of the power supply connections.
Looks like the control board monitors and controls the power supply.
From OpenGlow:
Details of the power supply connection from the Control Board on “Power” page 3.
OpenGlow_P2-R1_2018-07-23_DRAFT.pdf (752.3 KB)
The control board schematic show various TP’s [wherever they are] to measure individual DC voltages.
The schematic and the block diagram shows one part # for the supply GF-ECA-008282 but your picture shows two modules.
Note that there are 12V and 40V enables coming from the control board. One might assume that those should be asserted to enable the supplies.
Don’t know if you have seen this or if it is similar to your problem: Info on power board? - OpenGlow Control Board - OpenGlow