Emerson/Vertiv R48-series CAN programming?

[Etx]

Input power limit? You mean 03 F0 00 19? Set to 121%.
DC Output - i've sent packets to bring it to ON state, nothing...

 

[dominik h]

AC input current limit, called Diesel power limit, that gives the possibility to reduce the overall power of the rectifier
03 F0 00 1A 40 A0 00 00 AC-input current is held at 5A
floating point to hex conversion 40 A0 00 00 = 5

If there is no output voltage without load than there are probably the output fuses dead or the rectifier itself is damaged

 

[Etx]

I found the root cause.
The “compatible” backplane/power supply board I purchased from Tao is slightly misaligned relative to the connector (approximately 0.2 mm offset).
As a result, one of the two “DC Enable” contacts (located opposite the CAN pins) does not make proper contact with DC- when the board is inserted.

After temporarily bridging this pin to DC- with a thin wire, the rectifier started immediately and has been operating normally since.
So the issue was purely mechanical (connector alignment), not a firmware or CAN-related problem.

 

[Etx]

So, the "fixed" board looks like this... Note the offset of the contact traces in the second photo.
I used a piece of 0.16 mm thick strip from a JST connector.