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Iotawatt looks to be more powerful than Emporia, and if they have notifications, that's even better. Good luck with the new Growatt!

Ah, I wasn't aware of that model. Since Centerpoint is my power distribution company, it won't work. I have the Vue version with 16(?) branch sensor circuits and I love it. It already notified me twice when one of the freezers was off. I have other alerts set, such as if the well doesn't...

Not sure if it is called that, but I earn credits for what I generate in excess of what I use. The credits never expire so being a new system, I am anxious to see how it does from day to day. My first electric bill last week was $96. I generated about 800kwh and used 600. But the system...

That's a good skill to have. I've never written code, unless you consider ladder logic some 40 years ago.

Interesting. I've only heard from Vince, and usually he responds in the middle of the night.

Ha, you always reply and even your brief comments, like this one, are always helpful! Well that is promising, they seem to have come a long way. Well, I'll be! I had tried clicking on those icons, but I guess I gave up when I clicked on the Solar PV icon and nothing came up. Anyway, that's...

I have to say that after a week or so of playing with it, I'm not terribly impressed with Solar Assistant. Here's why: It doesn't provide net import or export info. It does provide grid used and grid exported, but you have to do the math for the net value. Plus, it is kind of buried. You...

I don't use Home Assistant (I use Smart Life), but I should look into it one of these days since it probably does more than Smart Life. I never thought of putting automation on the inverter, and since I only have one, as you say, not sure how it could help. UNLESS it could reboot the inverter...

Thanks, but this statement on the beta page got my attention: The risk of damaging your solar hardware is generally very low as the hardware doesn't allow setting invalid settings. Even though it sounds like you have had good experience, with my luck, I'm afraid I'll damage my new inverter...

That did it, thanks! I downloaded the latest software, but not sure if it is the beta version. It is version 2024-01-23. Also, don't know what it does, but should I have MQTT enabled?

I installed the USB adapter and it connected within 10 or 15 seconds, no sweat. There are some things about the app I'm not sure about so I emailed Vince at SA. For example, it only shows two of the four MPPT strings. I imagine you have either already figured out how to get the other strings...

Thanks guys. I ordered the Waveshare model since it was a bit cheaper.

I just bought Solar Assistant and I am having trouble connecting to my MIN11400 inverter. I am using pins 3 and 4 of the RJ45 jack on the Orange PI and connecting to the inverter as you show in your picture. I tried reversing polarity but still no communication. Should I be connecting to the...

If it were at 252 or less, I would accept it. But since it is always a few volts above 252, that is the question.

I know this is an old post, but did you ever resolve it? I am in Texas also (near Houston) and my grid voltage is typically 253 to 255V according to my DMM and the inverter as well. That is above the 5% upper limit of 252V that my utility (Centerpoint Energy) claims not to exceed. I've had...

I asked Growatt about the Export Power Limitation setting. Here is my question and their answer: Question: 1. There is a setting called export limitation power ratio (under system configuration). Now that my system has been approved by my utility, I played with it and I see that changing the...

I reached out to Growatt on the best settings for ramp rate (Growatt 11400 MIN series inverter). It comes from the factory at 15 percent, but I changed mine to 40. Now I may change it back to 15. Here is their response, if you can understand it, your Chinglish is better than mine. First of...

Sorry for the delayed response/update, I've been out of town. I have updated the 15V isolated supply schematic and am now 98% sure it is correct since it is working (that part of the inverter, anyway). I also ordered and installed the new gate drivers and h-bridges. There was no release of...

I've never looked for one, but I imagine a 72V 1kw power supply is either hard to find or expensive, or both. I saw they have other models that may work with 160 ft lift, but they won't work for me for other reasons. Thanks for the info.

Copy that. So is the controller powered by DC or AC? My water level is about 160'. Not sure what my GPM is, but with several acres of irrigation, probably similar to yours. Except no basements in Houston:-(

I looked at the RPS website and I see that they are for solar only. For some reason, I thought they ran on AC and used an inverter, like a VFD to drive the motor. It wouldn't work for me, but it sounds perfect for your application.

My understanding is that ramp rate adjusts how fast the inverter responds to changing loads, such as when a motor starts or stops. I'm only familiar with the MIN series of Growatt inverters; others may not have that setting. In the Growatt app, it is under the Grid Code menu.

That's too bad about the optimizers. Have you tried adjusting the ramp rate? Maybe that will minimize sudden current changes. I guess I could turn mine off too since the panels are on a metal roof and less chance of fire (although the supports are wood). If it continues, that's what I'll...

I actually did call Growatt and they lowered the sensitivity to the the lowest and it still happened. (Previously, they told me how to access service level functions, but I didn't try it myself as I didn't know it was adjustable). Since it never occurred for the past 3 months until I...

I have a Growatt MIN 11400, although this question may apply to any inverter with ACFI. Now that all my panels are installed in their permanent location, I rearranged the string wiring layout. I have 4 strings. The next day I got an AFCI fault, then again the following day. What would be a...

Great, thanks! I will try to keep them equal, but won't worry too much otherwise.

There are several discussions here about laying out panel strings, but not related to my question. I have a Growatt MIN inverter with 4 separate MPPT inputs. All thing being equal (sun exposure, wire length, etc) is there any benefit to having all strings the same number of panels? Right now...

I tested the circuit (as drawn in my sketch, also no H bridge modules installed) with 15V. The wave forms at the transformer were as shown below (400kHz). There was a slight voltage boost across TX1 as would be expected. Primary of TX1: Secondary A of TX1: There was no signal at the...

So if it won't work as drawn, would it work if they were both PNP or both NPN? If so, what would be the purpose of having two identical transistors in series? Not sure what you mean by if the emitters are not connected. Do you mean to a load? BTW, I found the circuit with the PNP and NPN...

If it is true that they are BJT I think chances are good that they are the transistors in the datasheet I uploaded. Per both datasheets, the PNP and NPN have identical pinouts. If thats the case, then it means my diagram is correct, with the possible exception of where the 5 ohm resistors go...

Sorry for the picture quality, but in person I can verify there is no solder bridge (also checked with DMM). I'm 95% certain that the damage was caused by the shorted gate drivers (caused by the shorted/open IGBT's). I tested the B-E and B-C junctions with the following results (essentially...

That's what I would have thought, but is that possible the way they are connected? The bases of each are definitely connected together, as are the emitters. I can see that visibly in the traces and verified with DMM. And the collectors are definitely connected as shown. The only uncertainty...

I spent the last two days (maybe 10 hours total) tracing the circuit. It answers a lot of questions I had but raises two others. Here it is, although there could be a few errors. BTW, I forgot to label the transformer; it is TX1. My main questions are regarding the two transistors driving...

The collector of Q42 goes to one of the winding terminals (primary?) of TX1. TX1 has two other separate windings. One goes to the Vee pin of U22 and U47, the other goes to U23 and U48 (those last two are the ones that are shorted Vcc to Vee). U22, etc are all UCC23313 gate drivers. BTW, They...

The only caps in the area are two 0.22uF 630V. Do you think the would be for boot strapping? Here are pics of both sides of the board: OK, I'll look for another opto isolator going to the TL2845B. The 15V comes from another board with a bunch of switching power supplies. I noted the...