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<font face="Verdana">Hello Manuel,<br>
<br>
<blockquote type="cite">that looks perfectly fine</blockquote>
<br>
That one yes, but as I wrote, LB and FSD are happening on much
higher battery charge values - 90% or more, which is not fine.<br>
<br>
<blockquote type="cite">That's... surprisingly well, assuming your
multimeter indicates correct values. I would have expected
values well below 12V</blockquote>
<br>
My multimeter hasn't gone inspection recently, but I do not have
reasons to believe that the readings are wrong :-)<br>
<br>
<blockquote type="cite">Can you please show us all the
configuration files ? I can only suspect that there is something
wrong there because (from a hardware point of view) the UPS
behaves very very well, according to your tests and logs.</blockquote>
<br>
Which configuration files you'd like to see exactly? I haven't
made many configuration changes anyway. Isn't the UPS that reports
LB (Low Battery) and FSB (forcing shutdown of the machine)? I mean
if this is a configuration issue, then why I did not have this
problem before? Why the shutdown happens on different battery
charge levels?<br>
<br>
<br>
Regards,<br>
--<br>
Georgi<br>
</font><br>
<div class="moz-cite-prefix">On 27.1.2020 at 2:53, Manuel Wolfshant
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:43f304a7-7878-de73-fed5-5bcbaa28fc13@nobugconsulting.ro">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<div class="moz-cite-prefix">On 1/25/20 10:53 AM, Georgi D.
Sotirov wrote:<br>
</div>
<blockquote type="cite"
cite="mid:9344bd05-80b9-b4dc-6424-52a0c83e2d16@gmail.com">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
<div align="justify">OK, so yesterday evening I done a real test
cutting of the power to the UPS. And it went good... the UPS
supported my server for 28:50 minutes (i.e. the expected
runtime with this load), before forcing shutdown. The
batteries could still hold as charge was 30 % with about 15
minutes run time. And the UPS did hold for another full 10
minutes before powering off. These are the relevant lines from
/var/log/ups:<br>
<br>
<font face="Courier New, Courier, monospace">20200124 201318
32 0.0 12 [OB] NA 0.0<br>
<font color="#ff0000">20200124 201323 30 0.0 13 [ALARM OB
LB] NA 0.0</font><br>
20200124 201328 30 0.0 13 [FSD ALARM OB LB] NA 0.0<br>
20200124 201333 30 0.0 13 [FSD ALARM OB LB] NA 0.0<br>
20200124 201338 30 0.0 13 [FSD ALARM OB LB] NA 0.0<br>
20200124 201340 30 0.0 13 [FSD ALARM OB LB] NA 0.0</font><br>
</div>
</blockquote>
<p>that looks perfectly fine<br>
</p>
<p><br>
</p>
<blockquote type="cite"
cite="mid:9344bd05-80b9-b4dc-6424-52a0c83e2d16@gmail.com">
<div align="justify"> <br>
The server was shutdown properly, but for some reason it did
not power off. I saw an error from <font face="Courier New,
Courier, monospace">umount</font> about busy file system,
but I'm sure this doesn't always happen.<br>
</div>
</blockquote>
<p>the error is related to your linux system, not to nut<br>
</p>
<p><br>
</p>
<blockquote type="cite"
cite="mid:9344bd05-80b9-b4dc-6424-52a0c83e2d16@gmail.com">
<div align="justify"> <br>
With everything powered off, I extracted the original
batteries to check them and measure the voltage. The batteries
are Leoch DJW12-9.0 with one of them at 12.57 V and the other
at 12.64 V (measured without load after the discharge).<br>
</div>
</blockquote>
<p>That's... surprisingly well, assuming your multimeter indicates
correct values. I would have expected values well below 12V</p>
<p><br>
</p>
<p><br>
</p>
<blockquote type="cite"
cite="mid:9344bd05-80b9-b4dc-6424-52a0c83e2d16@gmail.com">
<div align="justify"> <br>
And this morning there was again a short power failure (not
more than 30 minutes, because the router connected to the
battery power from the UPS did hold up). With batteries
charged up to 91% the UPS supported the server for just 07:10
minutes and forced shutdown with 69% battery charge and over
20 minutes of run time...<br>
<br>
<font face="Courier New, Courier, monospace">20200125 021123
70 0.0 16 [OB] NA 0.0<br>
<font color="#ff0000">20200125 021128 69 0.0 16 [FSD ALARM
OB LB] NA 0.0</font><br>
20200125 021133 69 0.0 16 [FSD ALARM OB LB] NA 0.0<br>
20200125 021138 69 0.0 16 [FSD ALARM OB LB] NA 0.0<br>
20200125 021143 69 0.0 16 [FSD ALARM OB LB] NA 0.0<br>
20200125 021148 69 0.0 16 [FSD ALARM OB LB] NA 0.0<br>
20200125 021150 69 0.0 16 [FSD ALARM OB LB] NA 0.0</font><br>
<br>
So, it seems to me that my UPS forces shutdown pretty
randomly. Why the UPS is not waiting for the preset low
battery charge value of 15%? What is actually driving this FSD
ALARM and LB signal when batteries for sure could hold up
more?</div>
</blockquote>
<p><br>
</p>
<p>Can you please show us all the configuration files ? I can only
suspect that there is something wrong there because (from a
hardware point of view) the UPS behaves very very well,
according to your tests and logs.<br>
</p>
<p><br>
</p>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
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