[RE-wrenches] Looking for TM500 shunt board

[Ryan]

To the best of My knowledge Robin had no knowledge of that issue. I also
remember that issue and it was aggravating to troubleshoot.

Ryan

-----Original Message-----
From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Howie
Michaelson
Sent: Tuesday, December 18, 2012 9:49 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Looking for TM500 shunt board

Luke,

Don't know if you found your 48v shunt, but I've been meaning to mention
that if you are using the TM500 in a 48v system along with a C40 Charge
controller, you may run into charging problems.  My memory from many years
ago was that the shunt board set up some noise on the DC bus that confused
the C40 and it stopped charging.  This was a problem that Xantrex only
finally admitted to after 1 1/2 years of traveling to a remote site to
figure out why the clients system was not getting an appropriate amount of
solar gain and talking to about every tech and engineer that I could get
through to.  It was the final straw in my decision to never use Xantrex
equipment again - not that they had a problem, but that they would not admit
it to me until I wasted enormous amounts of time going back and forth,
finally getting some low level tech to tell me that the issue was identified
some 6 months earlier.  To date they have never issued a tech note on this.
The TM500 is a bastardization of the Trimetric, and I was told that Xantrex
was warned to not put some of the electronics onto the shunt, but they
decided to do so anyway.  I think that boB or Robyn were long gone from
Xantrex by the time this issue was identified, but I'd be curious to hear if
they knew anything about it...

-- Rant off --
Howie
--
Howie Michaelson
NABCEP Certified Solar PV InstallerT

Catamount Solar, LLC
Renewable Energy Systems Sales and Service VT Solar Electric & Hot Water
Incentive Partner http://www.CatamountSolar.com
802-272-0004


On Thu, November 29, 2012 4:47 pm, Luke Christy wrote:
> Hi Folks,
> I have an old Xantrex TM500 energy meter that I'm repurposing for a 
> personal PV project. The unit was originally set up with the TM48 48v 
> adapter/shunt board (This thing has an RJ-11 connector for the comm 
> cable to the TM500 and screws directly to the kelvin terminals on a 500A
shunt).
> The 48V shunt board went bad, which is why I ended up with the TM500 
> unit, but that's ok because I need it to work with a 24V system now. 
> The low-voltage shunt  board for 12 and 24V systems was smaller and 
> simpler (as far as I can tell), but I haven't been able to find one
anywhere.
> Anyone out there have an old low-voltage shunt board that you want to 
> sell? If so please contact me off-list.
> Thanks.
>
> Luke Christy
>
> NABCEP Certified PV InstallerT: Certification #031409-25 NABCEP 
> Certified Solar Heating InstallerT: Certification #ST032611-03 CoSEIA 
> Certified PV Installer
>
> Solar Gain Services, LLC
> Monte Vista, CO
> SGSRenewables at Gmail.com
> 719.588.3044
> www.sgsrenewables.com
>
>
>
>
>
>
>
>
>
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