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SRNE 20KW parallel ASP journey.

empowered said:
what are all these abbreviations?
Click to expand...
Any specific?
This thread might help you.
svetz

Thread 'Commonly used Forum Acronyms & Abbreviations'

Solar is befuddling enough! Why use acronyms? Well, we're lazy typists.... :LOL:
  • xSyP - e.g., 2S2P, shorthand for how many cells in Series (S) and Parallel (P).
  • A - Amperes or amps. A measure of current. See warning.
  • AC - Air Conditioning, sometimes A/C.
  • AC - Alternating Current, a waveform of varying voltage with steady frequency.
  • AFAIK - As far as I know
  • AGM - Absorbent glass mat, a type of lead acid battery.
  • Ah - Amp Hours
  • AHJ -...
  • Like

Edit - forgot the link...
 
Last edited:
empowered said:
what are all these abbreviations?
Click to expand...
Those are the settings. If you look at the manual, that is how each setting is abbreviated. Go thru the manual and look at each setting and you will understand. For example- Sbu is Solar,battery, utility.

On my cheat sheet I have spaces in between the setting and it's description but the format here doesn't copy the spaces well.
 
42OhmsPA said:
Rain has been mostly overnight, outside peak sun cloud hours...
Click to expand...
We had crap like that all last week during the day. Rain snow, no sun, just crap. I thought I might have to turn on the grid breakers more than once.

Still managed to collect 200 Kwh for the week off the 8.8Kw array. I had a doctor appointment all day one day and a service call for half of another or I might have run out of power.
 
42OhmsPA said:
Any specific?
This thread might help you.
svetz

Thread 'Commonly used Forum Acronyms & Abbreviations'

Solar is befuddling enough! Why use acronyms? Well, we're lazy typists.... :LOL:
  • xSyP - e.g., 2S2P, shorthand for how many cells in Series (S) and Parallel (P).
  • A - Amperes or amps. A measure of current. See warning.
  • AC - Air Conditioning, sometimes A/C.
  • AC - Alternating Current, a waveform of varying voltage with steady frequency.
  • AFAIK - As far as I know
  • AGM - Absorbent glass mat, a type of lead acid battery.
  • Ah - Amp Hours
  • AHJ -...
  • Like

Edit - forgot the link...
Click to expand...
perfect, thank you!
 
Hi

I have been busy with my day job but ...
The system has been working flawlessly ... the 3 inverters are inverting and charging the batteries. sustained peak power up to 24 kw(!) with Oven, Cloth Drier and 5 split AC running at the same time .. No issues.
I haven't turned the inverters off yet, and am reluctant to do so... I don't like that feeling... Else I would have bought a fourth one, not that I need the power but for reliability purposes.

We need the generator to start once the batteries SOC is 10% and to shut down when they reach 90%.. I tend to think that battery voltage in Li chemistries is not a a good indicator of SOC, thus I need communications between inverter and batteries or ..
Use Solar Assistant ...
But I don't want to mess with the system.
I'll have to in the next few days :)

I understand the industry is in its infancy but, there needs to be a better way to manage inverters. Some inverters can work with Home Assistant but that involves a fair amount of fiddling and it is at this point an hobbyist/DIY/tinkerer solution. Another discussion for another time

Once I summon the courage to deal with communications, I'll share my findings with you.

Thanks to all

ZePrez.
 
Last edited:
ZePrez said:
Hi

I have been busy with my day job but ...
The system has been working flawlessly ... the 3 inverters are inverting and charging the batteries. sustained peak power up to 24 kw(!) with Oven, Cloth Drier and 5 split AC running at the same time .. No issues.
I haven't turned the inverters off yet, and am reluctant to do so... I don't like that feeling... Else I would have bought a fourth one, not that I need the power but for reliability purposes.

We need the generator to start once the batteries SOC is 10% and to shut down when they reach 90%.. I tend to think that battery voltage in Li chemistries is not a a good indicator of SOC, thus I need communications between inverter and batteries or ..
Use Solar Assistant ...
But I don't want to mess with the system.
I'll have to in the next few days :)

I understand the industry is in its infancy but, there needs to be a better way to manage those inverters. Some inverters can work with Home Assistant but that involves a fair amount of fiddling and it is at this point an hobbyist/DIY/tinkerer solution. Another discussion for another time

Once I summon the courage to deal with communications, I'll share my findings with you.

Thanks to all

ZePrez.
Click to expand...
This is great news! Congrats!
 
I may actually have to turn off communications. The inverter keeps cutting off the inverter when it perceives a low battery. For some reason I can't get the low voltage cutoff low enough, I believe because it's using communications and reading something from the server rack batteries. Haven't had time tho to figure out.
 
chamilun said:
I may actually have to turn off communications. The inverter keeps cutting off the inverter when it perceives a low battery. For some reason I can't get the low voltage cutoff low enough, I believe because it's using communications and reading something from the server rack batteries. Haven't had time tho to figure out.
Click to expand...
Common problem because SOC doesn't catch small drain on batteries etc. So you think you are at 50% and you are actually about to shutdown. I would suggest setting charger to come on at 48V.
 
chamilun said:
I believe because it's using communications and reading something from the server rack batteries. Haven't had time tho to figure out.
Click to expand...
I believe you are correct.
Setting 12 will help you with low voltage shutdown in open loop. Increase the time to compensate for heavy loads causing voltage sag.
 
42OhmsPA said:
I believe you are correct.
Setting 12 will help you with low voltage shutdown in open loop. Increase the time to compensate for heavy loads causing voltage sag.
Click to expand...
So every time I change setting 12 to 40.0, it automatically goes back to 44.6. is there another setting that trumps the over discharge setting?
 
chamilun said:
So every time I change setting 12 to 40.0, it automatically goes back to 44.6. is there another setting that trumps the over discharge setting?
Click to expand...
You need to have the settings in this order.

U

Post in thread 'SRNE 20KW parallel ASP journey.'

Regarding the V1.3 manual, I'm glad SRNE corrected the recommended battery cable gauge and added "The voltage setting logic: 【15】＜【12】＜【04】＜【14】＜【35】<【37】＜【05】＜【09/11】" text at the start of the settings section. Setting 68 (AC output phase mode) has a new "No N" (180-degree phase without neutral wire) option. Interesting.
  • Like
 
Zwy said:
You need to have the settings in this order.

U

Post in thread 'SRNE 20KW parallel ASP journey.'

Regarding the V1.3 manual, I'm glad SRNE corrected the recommended battery cable gauge and added "The voltage setting logic: 【15】＜【12】＜【04】＜【14】＜【35】<【37】＜【05】＜【09/11】" text at the start of the settings section. Setting 68 (AC output phase mode) has a new "No N" (180-degree phase without neutral wire) option. Interesting.
  • Like
Click to expand...
Yea. No matter what I do 12 and 15 will not change. Hmmm
 
Question. When in parallel and changing.settings. Should everything be off but the main id1 inverter ? Then restart everything?
 
chamilun said:
Question. When in parallel and changing.settings. Should everything be off but the main id1 inverter ? Then restart everything?
Click to expand...
No. Changes on one will carry over to the other.
Only time to isolate and power off would be if you are taking them out of parallel, changing frequency or AC voltage output.
 
chamilun said:
Yea. No matter what I do 12 and 15 will not change. Hmmm
Click to expand...
This is what I ran into when setting up the ASP's.

Start reading here and the post following it where I changed the settings shown in red.

Zwy

Post in thread 'SRNE 20KW parallel ASP journey.'

Setting 15, I can change it but it won't keep the setting, stuck on 40.0V. Setting 08 is USER.

I don't know why.

On a sidenote, I don't have a load on the AC output. Turned on PV and shortly after the screens went blank. WTF? was my first thought. Turned units off, disconnect PV and battery, then rebooted. Same thing occurred with only battery on, the screen would go blank after a period of time. Press the Enter button and screen comes back on. Screen must go to sleep.

Idle draw thru shunt is 3.97A so about 100W idle draw.

Settings are as follows, maybe someone sees something I...
  • Like
 
Hi

Before I forget:

Unit one at times was inverting but not charging. The reason was that it was connected to a part of the array that wasn't hitting the threshold of 90 volts due to some debris on those PVs... and the general cloudy weather we were experiencing at the time.. Not that this has been solved, and the second MPPT connected to a larger array (4200 Watts Max), no such problems.
I do however need to understand that issue of one of the inverter going to standby..

on this:

Question to @chamilun :
chamilun said:
I may actually have to turn off communications. The inverter keeps cutting off the inverter when it perceives a low battery. For some reason I can't get the low voltage cutoff low enough, I believe because it's using communications and reading something from the server rack batteries. Haven't had time tho to figure out.
Click to expand...
Emphasis and Italics are mine
"Cutting Off" in what way? The inverter goes to "standby" or ?? How can you tell it is "cut-off"?

Thanks in advance

Best.

ZePrez.
 
ZePrez said:
Hi

Before I forget:

Unit one at times was inverting but not charging. The reason was that it was connected to a part of the array that wasn't hitting the threshold of 90 volts due to some debris on those PVs... and the general cloudy weather we were experiencing at the time.. Not that this has been solved, and the second MPPT connected to a larger array (4200 Watts Max), no such problems.
I do however need to understand that issue of one of the inverter going to standby..

on this:

Question to @chamilun :

Emphasis and Italics are mine
"Cutting Off" in what way? The inverter goes to "standby" or ?? How can you tell it is "cut-off"?

Thanks in advance

Best.

ZePrez.
Click to expand...
Inverter turns off output. For only 10 seconds. Then back. No standby. It's all electronic switching. It will record the under voltage fault code.

When I get home Im gonna read the above fix and see if that works. Will report back.
 
So i set most of the settings to match what you guys are using. Which check it later.

Just noticed it won't allow user battery. With comms it defaults to lfp16. Probably need to turn comms off but trying to avoid.
 
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