[Nut-upsuser] turn UPS off after PC shutdown

[Dario Novakovic]

I am using truenas with Cyber power CP900EPFCLCD UPS. All is well, server shuts down after power loss in specified time.

Problem is that UPS remains ON. I would like UPS to turn OFF and I will turn it on, when the power comes back. I tried many various configuration but it does not affect the UPS.

Before I send all my config files and everything, I would like to understand how it works. 

I have been messing with nut for days, setting various "delay"s, tried many different settings and configs but I feel like I am missing something. I have couple of general questions:

1. Is it possible to turn the UPS off, after PC shut down.
2. If yes, how does it work? What makes UPS go off, when PC is off? What kind of command or information is sent to UPS to make it turn off
3. What is the purpose of "ups.delay.shutdown". Documentation says "Interval to wait after shutdown with delay command (seconds)". "Wait" for what exactly?


Thanks,
Dario