[RE-wrenches] Troubleshooting Xanbus

[Jeff Clearwater]

Hi Mac and William,

This is interesting because I was having an issue of the Xanbus network 
not seeing the Battery Monitor until I replaced an ethernet cable.  My 
present theory is that the white ethernet cables being supplied by 
Schnieder are marginal.

Given that many of our systems locate the monitoring components close to 
the main battery DC Inverter cables and that the EMF noisy PV charge 
controls with their medium voltage DC are also nearby -  especially 
going through the tight quarters of a MidNite E-panel or equivalent - it 
strikes me that inductive currents or EMF noise could be the culprit.

I'm wondering if for future installs I should just make up my own cables 
from shielded CAT6 as a standard practice for all ethernet-based comm 
systems?  That said I've never had a problem with SMA - only Schnieder.

Thoughts?

Best,

Jeff

William Miller wrote on 1/31/20 8:15 AM:
>
> Mac:
>
> 1.We have had this issue for years.  Specifically this affects AGS 
> units. We were told that bus cables had to be a minimum of 6’ to avoid 
> “ringing.”  Later (after we purchased and replaced cables) we were 
> told there was no foundation for this claim.
>
> 2.Some Fluke advanced testers we have looked at have a “bus health” 
> test function.  I think this is in the 125B Scope Meter and I see 
> reference to the function with a BHT190 break out adapter.  The 
> literature indicates applications on the following bus architectures:  
> Profibus, Foundation, Modbus, CAN-bus, AS-i bus and RS-485.  I will 
> leave it to you to research if this function would be helpful.   BTW, 
> the Scopemeter is about $3K and hard to get in a hurry.  You could 
> probably rent one.
>
> I wish you good luck in resolving your issue.
>
> William
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com <http://www.millersolar.com/>
>
> CA Lic. 773985
>
> *From:*RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org 
> <mailto:re-wrenches-bounces at lists.re-wrenches.org>] *On Behalf Of *Mac 
> Lewis
> *Sent:* Friday, January 31, 2020 6:19 AM
> *To:* RE-wrenches
> *Subject:* [RE-wrenches] Troubleshooting Xanbus
>
> Hi Wrenches,
>
> Does anyone have a good way to locate intermittent Xanbus issues with 
> Schneider equipment?  We have a site that has been giving us a lot of 
> issues.  It seems like the AGS might be dropping in and out and 
> defaulting to "Off".  It works flawlessly when we are there of 
> course.  Cables are testing fine.  No other device seems to have these 
> issues.  All of these cables are factory made.
>
> Maybe there is another explanation for the AGS defaulting to "Off".
>
> Thanks in advance for your help
>
> -- 
>
> Mac Lewis**
>
> "Yo solo sé que no sé nada." *-Sócrates***
>
>
>
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-- 
~~~~~~~~~~~
Jeff Clearwater
Village Power Design
linkedin <https://www.linkedin.com/in/jeff-clearwater-0622a312/>
www.villagepowerdesign.com <http://www.villagepowerdesign.com>
cell - 413-559-9763
~~~~~~~~~~~~~~~~~~~~~~~
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