[Nut-upsdev] Question about hardware failures / FSD

João Luis Meloni Assirati jlmassir at gmail.com
Tue Sep 29 21:13:58 BST 2020


The UPS I am developing a driver to is able to report several flags for
critical hardware conditions, like overheat, overload, inverter failure,
output short etc. What should be the correct policy of operation when such
a condition occurs? I think that the an UPS in such a condition is not
reliable and therefore a system shutdown should be called. However, the
developer's manual and all other drivers I inspected seem to call the FSD
flag only when there is a shutdown already in progress (say, a countdown
register is active).

So far none of my questions were answered, but I hope eventually someone
will have some time to spend helping me.

joão Luis.
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