@dennypage It seems I can't adjust that value:
upsrw -l ups
[driver.debug]
Current debug verbosity level of the driver program
Type: NUMBER
Value: 0
[driver.flag.allow_killpower]
Safety flip-switch to allow the driver daemon to send UPS shutdown command (accessible via driver.killpower)
Type: NUMBER
Value: 0
[input.transfer.high]
High voltage transfer point (V)
Type: STRING
Maximum length: 10
Value: 140
[input.transfer.low]
Low voltage transfer point (V)
Type: STRING
Maximum length: 10
Value: 90
[ups.delay.shutdown]
Interval to wait after shutdown with delay command (seconds)
Type: STRING
Maximum length: 10
Value: 20
[ups.delay.start]
Interval to wait before (re)starting the load (seconds)
Type: STRING
Maximum length: 10
Value: 30
I tried any way the admin user and password found in /usr/local/etc/nut/upsd.users and this was the output:
Unexpected response from upsd: ERR READONLY
Which I think confirms the admin/password is correct since any other credentials return ERR ACCESS-DENIED or ERR PASSWORD-REQUIRED
I guess I will have to test and see how the current configuration behaves.
The good news is that it seems I can adjust the delay shutdown and start directly in the UPS as per the output above, I didn't knew that!
I will test the whole system one of these days and definitely take note of the timing for the various NUT clients.
Your input has been very helpful, thank you.