[RE-wrenches] Over voltage error message

[drake.chamberlin at redwoodalliance.org]

Hi Matt,

There is no additional data monitoring. I haven't been able to make it
out there yet to check the parameters. 

The main reason the client is so worried is that she got a  message
that I'm not familiar with that said something to the effect that the
problem  had to be solved before the event light could be turned off.
I did not see this personally, and haven't encountered this message
before. I will need to see if the manual can shed any light on how to
turn off the light. . 

Thanks,

Drake 

----- Original Message -----
From: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
To:"re-wrenches" <re-wrenches at lists.re-wrenches.org>
Cc:
Sent:Tue, 18 Jul 2017 05:56:15 -0400
Subject:[RE-wrenches] Over voltage error message

 Greetings Drake,

 This is interesting. I have Grid-tied OutBack Radian GS8048A with
 MidNite Classic 200 systems in the field, but don't believe I've seen
 this issue before. (But certainly have seen many strange MATE3 &
 OpticsRE issues)

 Here are a few questions that come to mind:

 What is the Radian "Sell" voltage set at? Has this setting been
 checked since this issue was reported? Have the Classic 200 settings
 been checked to make sure they are set where they should be?

 Does the system have any data monitoring on the charge controller
 and/or battery system independent of the Radian inverter? If so, any
 information similar to the Events logged on the MATE3?

 Does this system have the OutBack FLEXnet DC installed? There could
 be more data to review to try and get a sense of what the issue may
 be. (shunt data, historical VDC data, any battery charging via grid?)

 If the system has more than one Classic 200 are they connected and
set
 up in "Follow Me" mode?

 Any chance the charge controller or inverter/charger tried to
initiate
 an equalization charge?

 Does the system have any DC loads or generation sources (other than
 the charge controller and inverter/charger) connected directly to the
 battery system or anywhere on the DC bus?

 Best regards,

 ----MATT

 Matthew Sirum
 P.O. Box 1227
 Greenfield, MA 01302-1227 USA
 phone: +1.413.773.0611
 email: MatthewSirum at gmail.com

 ---------- Original Message Below ----------

 [RE-wrenches] Over voltage error message
 Drake drake.chamberlin at redwoodalliance.org
 Mon Jul 17 05:36:46 PDT 2017

 Hello Wrenches,

 My client reported seeing an overvoltage error message on her Mate 3
 on a Radian system. The Radian is selling to the grid and is being
 fed by a Midnite Classic 200. It has shown two spikes so far, the
 last one going to 67 volts and lasting 1 second. The batteries are
 Concorde AGM, 305 AH.

 Does this momentary spike seem like a problem or a warning of
problems to come?

 Thanks,

 Drake
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