Search found 4006 matches

by tallgirl
Wed Apr 16, 2014 8:50 pm
Forum: Off Grid Applications
Topic: Experimenting with active tracking.
Replies: 19
Views: 10812

Re: Experimenting with active tracking.

billvon wrote:That will work for a little while, then fail when that battery becomes discharged and all the other batteries become overcharged.
+1.
by tallgirl
Wed Apr 16, 2014 8:49 pm
Forum: Grid Tie Applications
Topic: Sell Current versus Output Current
Replies: 1
Views: 2284

Re: Sell Current versus Output Current

There are two values, and only two values, that are reported by the Mate / Mate 3 / AXS Port

1). Power being bought or sold.
2). Power being inverted or used or charging.

The other two values (exported and loads) are derived from those two values.

The problem is ... the inverters are NOT accurate.
by tallgirl
Wed Apr 16, 2014 8:46 pm
Forum: FLEXnet DC
Topic: SOC suddenly jumps to 100%
Replies: 106
Views: 111200

Re: SOC suddenly jumps to 100%

As long as the FNDC Charge Parameters Met Time is not set to zero, a scan by the charge controller should not fool the FNDC into believing the charge parameters are met when in fact they aren't. Considering that Outback has acknowledged in private conversations that there is undocumented logic invo...
by tallgirl
Tue Apr 15, 2014 6:58 pm
Forum: FLEXnet DC
Topic: SOC suddenly jumps to 100%
Replies: 106
Views: 111200

Re: SOC suddenly jumps to 100%

Tim, I did look at your charts. My conclusion was that you didn't have good enough resolution to know what all was going on. What I've seen with systems, especially when they really are close to fully charged, is that the sweep of the array by the charge controller can create a false "parameters met...
by tallgirl
Tue Apr 15, 2014 6:48 pm
Forum: Off Grid Applications
Topic: VFX3524 Battery Setup
Replies: 3
Views: 1898

Re: VFX3524 Battery Setup

krogerssolar wrote:Any one have any information that i could use


Thanks
Everything sounds great, except the part about not replacing them all at once.

You only need a single RTS, if you have a hub. As you stated, it goes into whatever is plugged into port 1.
by tallgirl
Tue Apr 15, 2014 6:46 pm
Forum: Backup Applications
Topic: Charging batteries from the grid with gvfx3648
Replies: 4
Views: 6775

Re: Charging batteries from the grid with gvfx3648

Thanks Julie. I think you got it. Maybe it┬┤s a too simple question. I┬┤m starting on this system so I don┬┤t know how to tweak it to do what I want. So, if I don't have sun, command Charge Controller to do a Bulk Charge makes GVFX provide energy from grid? regards Fabiano Fabiano, I forget off-han...
by tallgirl
Mon Apr 14, 2014 8:50 pm
Forum: Backup Applications
Topic: Charging batteries from the grid with gvfx3648
Replies: 4
Views: 6775

Re: Charging batteries from the grid with gvfx3648

Configure the charger.
Tell the charger to do a bulk charge.

That's it.

Surely I'm missing something about the question.
by tallgirl
Mon Apr 14, 2014 8:25 pm
Forum: Off Grid Applications
Topic: automatic transfer switch
Replies: 2
Views: 2194

Re: automatic transfer switch

It sounds like you need an ATS that is open for couple of cycles to allow L1 and L2 to go dead because the inverters haven't sync to the generator yet.

Did I get that right?
by tallgirl
Mon Apr 14, 2014 8:22 pm
Forum: FLEXnet DC
Topic: SOC suddenly jumps to 100%
Replies: 106
Views: 111200

Re: SOC suddenly jumps to 100%

Tim,

The SOC jumps to 100% when the charge parameters are met. If that happens to coincide with when your reach 0 uncompensated amp-hours, so be it.

And my hourly rate is $150/hour.
by tallgirl
Sun Apr 13, 2014 1:43 pm
Forum: Off Grid Applications
Topic: Experimenting with active tracking.
Replies: 19
Views: 10812

Re: Experimenting with active tracking.

Since those are junk batteries you're just experimenting with, you can pretty much do anything you want.

However, if you don't want them becoming less junky with time, you'll need a proper DC-to-DC converter to produce a 12 volt supply.
by tallgirl
Sun Apr 13, 2014 9:57 am
Forum: FLEXnet DC
Topic: SOC suddenly jumps to 100%
Replies: 106
Views: 111200

Re: SOC suddenly jumps to 100%

Aloha, ...why should they respond, their Flexmax DC is performing exactly how they designed it to! ...sorry, David David, I disagree. I can't believe that anyone would have intentionally designed it to work that way. However, it is working exactly the way it was programmed to do, and apparently Out...
by tallgirl
Tue Apr 08, 2014 9:40 am
Forum: Mate3 / Mate3s
Topic: Mate 3 board distroyed by lightning
Replies: 1
Views: 1706

Re: Mate 3 board distroyed by lightning

That's usually a "Can't fix except by replacement".

That and, add lighting arrestors and other such gear so you don't have a repeat.
by tallgirl
Tue Apr 08, 2014 9:39 am
Forum: OutBack
Topic: Too Much or Not Enough?!?
Replies: 8
Views: 5584

Re: Too Much or Not Enough?!?

Three words -- HUP Solar 1. They are about 2,000Ah per pod. Two pods will have done this MUCH better. Peak charging current is about 250 amps. 4400 / 250 = C/18. System has too little array and too much battery. That explains the charging problems. In Spades. I'd replace those 18 strings of batterie...
by tallgirl
Mon Apr 07, 2014 5:15 pm
Forum: Off Grid Applications
Topic: Regulated 48 VDC Loads
Replies: 9
Views: 7904

Re: Regulated 48 VDC Loads

Not that anyone "needs" to do much of anything, besides eat and breath, but you need to figure out why the Deka gels died. Two years from a bank of batteries is really close to "not at all."
by tallgirl
Sun Apr 06, 2014 3:14 pm
Forum: OutBack
Topic: invertor throws the breaker
Replies: 7
Views: 4013

Re: invertor throws the breaker

I do! If we got the full rated 100% from the panels we'd have 4200 plus watts. As it is, we appear to have (at peak) about 3800 watts. It's my plan to add a slaved inverter but have to take things in steps. If the problem is producing to much wattage, is there a setting or a method (I guess I could...
by tallgirl
Sun Apr 06, 2014 1:11 pm
Forum: OutBack
Topic: invertor throws the breaker
Replies: 7
Views: 4013

Re: invertor throws the breaker

If I'm reading this correctly, you're producing more DC power than the inverter can deal with.

Could you provide the total DC power more clearly -- it sounds like you have more than 4kW DC on the system.
by tallgirl
Sun Apr 06, 2014 12:17 am
Forum: FLEXnet DC
Topic: SOC suddenly jumps to 100%
Replies: 106
Views: 111200

Re: SOC suddenly jumps to 100%

David, Well ... my FNDC spends almost all the time working flawlessly. The settings are "wrong" right now because I had a problem with some of the unrelated wiring and the charge controller was off-line for several days waiting for me to get the free time. Rather than screw around with the batteries...
by tallgirl
Sat Apr 05, 2014 8:20 am
Forum: FLEXnet DC
Topic: SOC suddenly jumps to 100%
Replies: 106
Views: 111200

Re: SOC suddenly jumps to 100%

VT - Yes, the FNDC is more than capable of "Garbage In, Garbage Out". This is not, however, the fault of the FNDC. The other issue, which must periodically be mentioned, is that the SOC and "Parameters Met" calculations are mostly independent. The two should serve as checks on each other, which is w...
by tallgirl
Sat Apr 05, 2014 7:27 am
Forum: FLEXnet DC
Topic: SOC suddenly jumps to 100%
Replies: 106
Views: 111200

Re: SOC suddenly jumps to 100%

David, Absorb time should be set based on what it take to flatten the charging curve. That's the "Gold Standard" for end-of-charge. Were I to design a battery monitor (something I keep thinking about doing, but never have the time, and really don't have the time now), I'd say to hell with all the st...
by tallgirl
Fri Apr 04, 2014 7:55 pm
Forum: Mate3 / Mate3s
Topic: mate3 datastream with VisualMATE by WattPlot
Replies: 12
Views: 11064

Re: mate3 datastream with VisualMATE by WattPlot

Most forum readers will be familiar with this, but anyone following this thread should be aware that the MATE3 now has an optional USB card that offers a very rich command set. :smile: You can even query and program various MATE3 settings, control individual device AUX ports, etc. :eek: The command...
by tallgirl
Tue Apr 01, 2014 9:09 pm
Forum: RADIAN Series
Topic: Does Radian have Generator Support?
Replies: 13
Views: 15542

Re: Does Radian have Generator Support?

Here's the sort of project that would likely be handy for those of you with generators -- http://duino4projects.com/power-quality-meter-using-arduino/ Something like that, which could report real-time line-frequency back to a monitoring program would provide excellent feedback about how a generator ...
by tallgirl
Tue Apr 01, 2014 1:34 pm
Forum: Mate3 / Mate3s
Topic: OutBack MATE3 Jepefe's On-Line Monitor new version
Replies: 15
Views: 17404

Re: OutBack MATE3 Jepefe's On-Line Monitor new version

Imagine a small black box with a USB port and a CAT5 connection. Plug the MATE3 USB into the box, the box into the network, and voila - remote monitoring and control from anywhere. I haven't looked into it yet but I was thinking it would be hard to make the MonitorMate project I work on also functi...
by tallgirl
Tue Apr 01, 2014 1:32 pm
Forum: Mate3 / Mate3s
Topic: OutBack MATE3 Jepefe's On-Line Monitor new version
Replies: 15
Views: 17404

Re: OutBack MATE3 Jepefe's On-Line Monitor new version

There's some interesting USB-Ethernet open source out there, but I don't think they have eliminated the full-size processor at both ends yet. Could be wrong though... Once more, with feeling. I make stuff that doesn't require computers. Embedded firmware is all it takes to get rid of those full-siz...
by tallgirl
Tue Apr 01, 2014 1:59 am
Forum: Mate3 / Mate3s
Topic: OutBack MATE3 Jepefe's On-Line Monitor new version
Replies: 15
Views: 17404

Re: OutBack MATE3 Jepefe's On-Line Monitor new version

Rob,

One of the goals for greenHouse Gas and Electric this year is open-sourcing all sorts of gadgetry. Is there really a demand for converting the USB serial output back to UDP?
by tallgirl
Tue Apr 01, 2014 1:55 am
Forum: RADIAN Series
Topic: Does Radian have Generator Support?
Replies: 13
Views: 15542

Re: Does Radian have Generator Support?

Are you sure you're not confusing what I've described with something else? I might ask the same question. In regards to the original topic, you did catch that we were talking about Generator AC In, not Radian AC Out, right? Yes, I did. But again, irrelevant. I don't know the Radian firmware well en...