[RE-wrenches] Radian Glitch

Kent kent at coveoregon.com
Fri Jan 14 18:06:55 EST 2022 

Sounds like what you have run into is one of the bugs in the FNDC that 
causes the SOC indication to suddenly change. It should change to 100% 
when the charge conditions are met. It will also change to 100% in some 
circumstances when they are not met.
Here is a link to a post that I put on the Outback forum in 2014 about 
this issue:
https://forum.outbackpower.com/viewtopic.php?f=28&t=7448&hilit=Kent+Osterberg+FNDC 
<https://forum.outbackpower.com/viewtopic.php?f=28&t=7448&hilit=Kent+Osterberg+FNDC>
Folks are still complaining about this bug today. Just search for "SOC 
jumps to 100%". I believe that FNDCs are shipped with the same firmware 
now that they had then.
The fix is to not use the SOC start/stop trigger. If your customer 
insists on using SOC start/stop, you can reduce the likelihood that the 
bug will terminate the generator run cycle early by starting the 
generator at a lower SOC.

Kent Osterberg
Blue Mountain Solar


On 1/14/2022 12:42 PM, Tuss, Lones wrote:
>
> Hello Howie
>
> I  believe the situation was this.
>
> The gen would automatically start ..as it should.
>
> The inverter would accept the ac source… as it should.
>
> It would begin a charge sequence again …as it should.
>
> But
>
> The inverter would shut off the generator within a very short amount 
> of time.
>
> Usually this is caused by a start condition initiating a gen run.
>
> But some other stop condition causing the gen to be turned off.
>
> With 3 different run stop conditions used in the Mate3S it was just a 
> matter of making thing a little more simple. I disabled the SOC 
> run/stop in the Mate3S AGS just to see if that was the cause of the 
> stop command.
>
> Doing a 2 minute  voltage start will cause the  gen to run until the 
> absorb timer on the inverter has zeroed out. Indeed it did. The Soc 
> command was set to start at 80 or 82% (I forget which) and Stop at 90% 
> as requested by the customer.
>
> Both Mac and I agreed this was a bit crazy but it was what the 
> customer wanted.
>
> By looking in the Optics Event logs the shut down was attributed to 
> the Stop SOC condition being met.
>
> So eliminating SOC was a logical first step.
>
>     To me the only remaining question is I did not see the SOC reach 
> 90% but that is a pretty tight window in which to operate. A more 
> usual SOC start /stop condition would be 60%to 90% with a 100% charge 
> required every so often (user selectable). I believe this system was 
> set for 100% charge every 14 Days.
>
> I hope this helps explain without adding further confusion.
>
> Take Care All
>
> *From:* RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> *On 
> Behalf Of *Howie Michaelson
> *Sent:* Thursday, January 13, 2022 2:42 PM
> *To:* RE-wrenches <re-wrenches at lists.re-wrenches.org>
> *Subject:* Re: [RE-wrenches] Radian Glitch
>
>
> 	
>
> *CAUTION:*This email originated from outside of the Company. Do not 
> click links or open attachments unless you recognize the sender and 
> know the content is safe.
>
> Thanks for the update Lines. While it seems from turning off the soc 
> gen control, the generator is running as it should, I don't understand 
> how that explains the charging behavior, or why the inverter continued 
> to ruin the generator without using it's output.
>
> Howie
>
> Howie Michaelson
> Sun Catcher
> NABCEP Certified Solar PV Installer™
> Solar Electric & Heat Pumps Systems Sales & Service
> 802-272-0004
>
> On Thu, Jan 13, 2022, 1:32 PM Tuss, Lones <lones.tuss at enersys.com> wrote:
>
>     Hello Wrenches
>
>     I was able to contact Mac this morning. Luckily this system was on
>     optics so we were able to go look at the start and stop conditions
>     in the AGS programming and the Event logs.
>
>     The event logs stated the stop was caused by an SOC stop command.
>
>     In AGS this system is using 3 start conditions
>
>     Voltage start , Load start and  Soc start
>
>     At the customer’s request the Soc is set to start at 82 % and stop
>     at 90%
>
>     Which seems a little crazy to both Mac and I
>
>     But to test if the Soc was indeed the cause of the short run.
>
>     We disabled the SOC start/stop.
>
>     We then started a bulk cycle to set the absorb timer to the 2 hr
>     time limit as programmed in the inverter.
>
>     We raised the 2 minute timer above the current battery voltage to
>     initiate a gen run.
>
>     The gen did start and at this point the gen has run for
>     approximately 1.5 to 2 hours.
>
>     So it does appear that  SOC stop was the cause of the short run,
>     as indicated in the event Log.
>
>     What neither or Mac or myself can explain is the graph on the
>     Dashboard does not show the Soc above
>
>     80% I am not certain if it is due to a momentary spike that is too
>     quick to record. At this point that is just a guess (sorry). But
>     that is the situation.
>
>      I will say it was nice to have this on Optics as we could go
>     visit the site and do everything from our respective homes.
>
>     Mac thank you for returning my call and working through this issue.
>
>     Take Care All
>
>     *From:* RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org>
>     *On Behalf Of *Mac Lewis
>     *Sent:* Thursday, January 13, 2022 4:38 AM
>     *To:* RE-wrenches <re-wrenches at lists.re-wrenches.org>
>     *Subject:* [RE-wrenches] Radian Glitch
>
>
>     	
>
>     *CAUTION:*This email originated from outside of the Company. Do
>     not click links or open attachments unless you recognize the
>     sender and know the content is safe.
>
>     Good Morning Wrenches,
>
>     I have an Outback Radian 8048 site that is acting up.
>
>     This only happens when the generator is automatically started.
>
>     It will start the generator and warm it up normally and then
>     connect and start charging as it should.  After about 30 seconds
>     to 1 minute it will drop the AC input, and put the generator in
>     cool down mode and the charger will be disabled.  It will then
>     continue to run the generator until you turn it off manually,
>     presumably because it hasn't reached the stop trigger.
>
>     This system will charge normally when the generator is manually
>     started.  The firmware on the Mate3s is up to date.
>
>     Any ideas?
>
>     Thanks in advance
>
>     -- 
>
>     Mac Lewis
>
>     "Yo solo sé que no sé nada." *-Sócrates*
>
>
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