[RE-wrenches] SW AGS

Wed Aug 7 15:24:04 PDT 2013

Hi Chris,
"Stop absorb" ramps up to the BULK voltage, which replaces approx 80% of 
capacity. Running the gen thru the 
absorption stage will allow for a full charge, but is a waste of fuel 
(most of abs is at reduced rate), and users want to 
charge the rest of the way with RE. The SW uses "Absorption Time" for stop 
parameter, but if set to "0" would accomplish
 the same as stop absorb.
Eric
_____________________________________________________________________________________ 

Eric Bentsen  |   Schneider Electric   |  Solar Business  |   UNITED 
STATES  |   Technical Support Representative 
Phone: +(650) 351-8237 ext. 001#  |   
Email: eric.bentsen at schneider-electric.com  |   Site: 
www.schneider-electric.com/solar  |   Address: 250 South Vasco Rd., 
Livermore, CA 94551 

*** Please consider the environment before printing this e-mail 

From:
"Chris Worcester" <chris at solarwindworks.com>
To:
"'RE-wrenches'" <re-wrenches at lists.re-wrenches.org>
Date:
08/07/2013 03:17 PM
Subject:
Re: [RE-wrenches] SW AGS
Sent by:
re-wrenches-bounces at lists.re-wrenches.org

Now there is a useful setting, just being a little sarcastic, this would 
be hard to diagnose. Was that available on the SW’s AGS menu too?

Chris Worcester
Solar Wind Works
NABCEP Certified PV Installer
Office 530-582-4503
Cell 530-448-9692
Fax 530-582-4603
www.solarwindworks.com
chris at solarwindworks.com

From: re-wrenches-bounces at lists.re-wrenches.org [
mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of jay peltz
Sent: Wednesday, August 07, 2013 2:30 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] SW AGS

HI Eric,

Sounds like the "stop absorb" might have been enabled.
This will stop the AGS when the battery volts reach absorb setpoint.

But has no impact if starting the generator manually.

jay

peltz power

Sounds like you talked to the right guy, that's his info...except that he 
has, according to what he told me, an SW not an XW. I'm assuming he's 
maybe at 50% capacity on his original 1260Ah bank based on everything he 
told me this morning. He did say that his bank will last him through the 
night and that he has some pretty hefty air conditioning loads. He also 
said he had equalized in the past but not in the last 18 months. I'm just 
not convinced that his batteries are shot. But all this battery talk may 
be beside the point if he's not experiencing the same on/off cycling 
problem when he manually starts the genny, right? That is, assuming the 
disco settings remain in effect regardless of start mechanism. Thanks for 
indulging me tocayo.

Eric
SunHarvest
001.530.798.3738 (Cell)
----- Original Message -----
From: Eric.Bentsen at schneider-electric.com
To: RE-wrenches
Sent: Wednesday, August 07, 2013 12:54 PM
Subject: Re: [RE-wrenches] SW AGS

Hi Eric, 
 Sounded like bad batteries to me also (I think he called in this AM). He 
has (2) XW6048 units that are 
capable of 200ADC between them, and he also has 1260Ah of flooded 
capacity. DC Start V is set for 46.5V, so if we assume he was close to 50% 

discharge (depending on load), it should take almost 2 hours to reach the 
bulk voltage (80% replaced). His batteries were ramping up to bulk 
in just a couple of minutes, meaning the batteries were not absorbing the 
charge. I have heard varying opinions on the symptoms of sulfation, 
but it does sound like a battery issue (5 yrs old). He was advised to 
equalize to try and recover them (he has never done this), or replace 
them. 
Rgds, 

_____________________________________________________________________________________ 

Eric Bentsen  |   Schneider Electric   |  Solar Business  |   UNITED 
STATES  |   Technical Support Representative 
Phone: +(650) 351-8237 ext. 001#  |   
Email: eric.bentsen at schneider-electric.com  |   Site: 
www.schneider-electric.com/solar  |   Address: 250 South Vasco Rd., 
Livermore, CA 94551 

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From:
"SunHarvest" <eric at harvesthesun.com>
To:
"RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Date:
08/07/2013 12:39 PM
Subject:
[RE-wrenches] SW AGS
Sent by:
re-wrenches-bounces at lists.re-wrenches.org

I read through the archives on the XW AGS thread but have a query on 
behalf of a customer with an SW AGS issue. I'm heading out to the remote 
site tomorrow and would like, if possible, to show up knowing what I might 
be up against. 

The customer recently replaced his AGS for his two SW 6048s and then 
upgraded his firmware a week later. He reported that his problem with the 
AGS began after firmware upgrade. Here's the particular issue: 

AGS will try to start the 15.8kW Multi-Quip genny due to low battery 
voltage (event 306 DCV start). After about 5 minutes the AGS will stop the 
genny due to battery absorption level reached (event 313 ABS stop). The 
AGS will go through this event 306/313 cycle on and off until the 
homeowner shuts down the AGS. To me this sounds like bad batteries. But, 
the homeowner says this cycling does not occur when he manually starts the 
generator. This doesn't sound like a complicated problem but so far I'm 
unfamiliar with the SW AGS. So, I would greatly appreciate any insight you 
guys can offer me. 

Thanks!! 

Eric
SunHarvest
001.530.798.3738 (Cell) 

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