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:[email protected]
<mailto:[email protected]>] *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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