[RE-wrenches] Fronius IG4000 problem

[Jennifer Bryce]

boB


That is a good point! That is why we use MS Tristar PWM controllers to  
PWM the load instead of a Bang on/off load control from a relays.
It seems to work much better because of the rapidly changing input  
from the wind turbine. The Tristar seems fast enough to respond well  
in a coupling application for load management.
The Xantrex C-60 do not works as well. Of course that is all for  
nothing if the grid is weak.

Logan

On Apr 19, 2009, at 11:41    -Apr 19, boB Gudgel wrote:

> Mark Dickson wrote:
>
> >> the array output climbs above 3000 or so watts, we continually  
> get a “State 108” code and shut down cycles each time a relay trips  
> on a diversion load...
>
> Sounds to me like your diversion load may be too small and/or the  
> grid is weak at the Fronius end. When the diversion loads suddenly  
> go away due to
> their "relays tripping", the Fronius', having lots of power to sell,  
> raising the AC grid voltage right out of the UL1741 / IEEE Voltage  
> window limit (132V ?).
> It hen has to shut down and disconnect in order to stop the apparent  
> islanding condition. That's probably what state 108 is trying to  
> tell you ?
>
> Looks like your Fronius inverter is most likely working just fine ?
> boB
>
>
>
>
>> Larry,
>>
>> I am having a somewhat similar problem with a recently installed  
>> IG5100. I have it installed in conjunction with an Outback battery  
>> based system for AC coupling. We have it set up to divert its loads  
>> to an electric ice melter and then to a large electric heater as  
>> the battery voltages climb. A third relay cuts the array power  
>> between the Fronius and the AC panel if the battery voltage  
>> continues to climb to unsafe levels.
>>
>> When we have heavy sunshine and low house loads (second home) and  
>> the array output climbs above 3000 or so watts, we continually get  
>> a “State 108” code and shut down cycles each time a relay trips on  
>> a diversion load. I have worked with both Outback and Fronius (who  
>> have been great!) but at this point we are all baffled. I think my  
>> next step, especially after reading the above post is to replace  
>> the Fronius. Then as a last resort swap the IG5100 out to a couple  
>> of SMA 3000US’s (a 6000US does not configure well with the 28  
>> evergreens).
>>
>> Any input from you guys would be greatly appreciated!
>>
>> Mark Dickson
>>
>> Oasis Montana Inc.
>>
>> ------------------------------------------------------------------------
>>
>> *From:* re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches-bounces at lists.re-wrenches.org 
>> ] *On Behalf Of *William Miller
>> *Sent:* Sunday, April 19, 2009 7:59 PM
>> *To:* RE-wrenches
>> *Subject:* Re: [RE-wrenches] Fronius IG4000 problem
>>
>> Larry:
>>
>> We've installed about 20 IG/LV series inverters. Some failures  
>> required only replacement of GF cards, most required replacement  
>> inverters. We've had several DOA when new, one was replaced by  
>> Fronius with a rebuild even when we warned in writing that we would  
>> not accept a rebuild (it had multiple KOs pulled in the chassis --  
>> just not acceptable). As of right now, we have 7 in non-operational  
>> status awaiting replacement. No kidding.
>>
>> There maybe be one or two that have not failed, but this is offset  
>> by those that have failed multiple times. The biggest failure rate  
>> is of the 6 LV4550s on an exterior north wall 2 blocks from the  
>> beach (http://millersolar.com/Portfolio/Commercial/Voler/ 
>> voler.html). These have been replaced three or four times each and  
>> are coming out as soon as we finalize the paperwork, with 3 10K  
>> Plus series inverters going in. This will require extensive rework,  
>> but we are being paid for our time. The Fronius staff has been very  
>> nice, but pretty slow to respond.
>>
>> I hate to report bad reviews to this forum, but it is what it is.
>>
>> William Miller
>>
>>
>>
>>
>> At 02:51 PM 4/19/2009, you wrote:
>>
>> William,
>>
>> 100% of what quantity? Are there any special conditions that may  
>> have contributed? Were they minor problems?
>>
>> Larry
>>
>> ------------------------------------------------------------------------
>>
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