Guillosurf
New Member
hello greetings in which page can I download the firm Thank you
Megarevo 8K Firmware Update
- Thread starter Beene Brothers
- Start date
jsmetalcraft
New Member
- Joined
- Jul 7, 2021
- Messages
- 185
Beene Brothers
Owner
I don't remember who it was but they mentioned with the updated firmware I uploaded in this thread while it allowed parallel operation if he tried to use more than 8kw the inverter(s) would give an overload error. I Just installed a second r8klna and can confirm the same behavior. I moved to the EG4 "generator" version and it works ok. I'll have to see if on a cloudy day the MPPT still works ok as that was the reason to upgrade the firmware in the first place. As of now I have my whole house behind the 16kw of inverter. 3 ton conventional AC upstairs and 3 ton inverter drive downstairs. dual 4.5kw water heaters, electric dryer, oven, stove top, etc. No gas in this house. I'm sure we will hit some overload scenarios but I'm curious how well it will operate.
According to Sense monitoring my peak is about 24kw. That's usually in the winter with the heat strips in the conventional ac kicking on in very cold weather when other loads are high as well.
Another annoying thing. With two inverters trying to do peak shift (loads are not behind the inverter, relying on CT's to know how much power to send to the main breaker panel) each inverter is supposed to have its own CT's running back to the main breaker panel. They cannot share even though there's an option for that in the settings. I played with it some and it was definitely being wonky trying to use one set of CT's. I don't have room for another set! Seems silly to have a set for every inverter. This is what was told to me by Megarevo.
According to Sense monitoring my peak is about 24kw. That's usually in the winter with the heat strips in the conventional ac kicking on in very cold weather when other loads are high as well.
Another annoying thing. With two inverters trying to do peak shift (loads are not behind the inverter, relying on CT's to know how much power to send to the main breaker panel) each inverter is supposed to have its own CT's running back to the main breaker panel. They cannot share even though there's an option for that in the settings. I played with it some and it was definitely being wonky trying to use one set of CT's. I don't have room for another set! Seems silly to have a set for every inverter. This is what was told to me by Megarevo.
it is for a 7.6Kw, but have a video to show how
Beene Brothers
Owner
Thanks. I am able to change the firmware though. It's just the only two versions I have are buggy. I imagine all of them are buggy
.
Beene Brothers
Owner
I overlooked a setting in the paralleling menu of the master inverter. You can set the overall max charge and discharge rates. I suspect this will solve my current issue. Thanks to the Megarevo folk for pointing it out.
NCSolarGarage
13.2kW Off-Grid
- Joined
- Sep 23, 2021
- Messages
- 209
I was the one having that 8kw overload error. Please let us know if the low 3/4 has been solved with the generator version. My older MR parallel firmware works great, but I have low 3/4.
I read a while ago that MR was going to release a firmware update to allow for only 1 set of CTs, but I haven't seen much as far as new firmware lately.
Beene Brothers
Owner
Looks like the low input on overcast conditions is back unfortunately. For inputs 3 and 4.
fromport
Solar Addict
I have 2 strings currently connected
One to 2 and one to 3
After reading your post I moved PV3 input string to PV1.
I did not see any difference in the ratio between PV2 -> PV3 vs PV2-> PV1
purple (PV3) became blue (PV1)
Beene Brothers
Owner
Very interesting, thank you for trying that. Here's what I saw today MPPT1 on each inverter is a 7 panel string of 395w panels facing the same direction:
MPPT4 on the first inverter is the third string of 7 panels on that same roof plane:
Earlier in the day we had some full sun and all three strings would hit 1.6kw at the same time. I'll continue keeping an eye on it.
MPPT4 on the first inverter is the third string of 7 panels on that same roof plane:
Earlier in the day we had some full sun and all three strings would hit 1.6kw at the same time. I'll continue keeping an eye on it.
Hi guys
Anyone knows if there is a firmware to correct the inverter to export from the battery to the grid?
I have net metering and my inverter is selling the excess to the grid. My issue is that when battery reach 100% the inverter drain the battery to 95% exporting energy to the grid.
As you can see in the picture there are several peaks from 100% to 95% in the battery.
Right now I have firmware V22 with the advance settings and still doing the same thing.
I tested many combinations of settings and I'm still with the issue. I'm using Signature Solar Manual 1.4 as a reference manual.
Anyone knows if there is a firmware to correct the inverter to export from the battery to the grid?
I have net metering and my inverter is selling the excess to the grid. My issue is that when battery reach 100% the inverter drain the battery to 95% exporting energy to the grid.
As you can see in the picture there are several peaks from 100% to 95% in the battery.
Right now I have firmware V22 with the advance settings and still doing the same thing.
I tested many combinations of settings and I'm still with the issue. I'm using Signature Solar Manual 1.4 as a reference manual.
Beene Brothers
Owner
I'm trying to get Megarevo to address this. However I haven't been able to test it as I don't have enough solar right now to get my battery full during the day! I presume you are running in self consumption mode? Do you have one inverter or multiple?
One inverter and self consumption.
Also Advanced Setting in Sell First Mode with Time of Use disable.
My concern is the battery life I have a 10KW lifepo4 power wall from GSL, the system is discharging and charging multiple times per day. I use the battery for backup only I don't want to use the battery daily and I cannot deactivate Battery Grid DOD, the minimum value is 10%.
Beene Brothers
Owner
Where are you seeing those advanced settings? I feel like I might be missing that menu. Or I'm just dumb and don't see it
.Where are you seeing those advanced settings? I feel like I might be missing that menu. Or I'm just dumb and don't see it
I just discovered this weekend.
I'm using a firmware that @fromport post in his page. Number 20230414, this firmware contains the advanced setting.
Megarevo 8K Firmware Update
Turns out that my firmware does NOT have the generator sub menu. Do you know where I can get that version? Did you find it?
diysolarforum.com
Signature Solar already have the manual with the advanced setting : https://eg4electronics.com/wp-content/uploads/2023/06/EG4-8KEXP-240-Manual-Ver.-1.4.0-1.pdf
Beene Brothers
Owner
Well then. Looks like I'm behind a bit on firmware. I don't want to update it tonight since I won't be here tomorrow but I'll likely try the newest on Thursday morning to see how it operates.
Beene Brothers
Owner
Pleaded to MR last night and they tried to update my inverters. I was told before hand but neither of us considered that the inverters were powering the modem. Anyway after I took my laptop in and upgraded them both we got TOU settings put in. Sure does add a lot more flexibility. I can now set it up to charge from the grid at a specified wattage which was an all or nothing thing before. And today it ran in self consumption mode so that once the battery was full it started exporting power to the grid. Only thing to nail down now is it only discharging the battery to 50% but I think it's just the daytime TOU needs to be 0-10%. Confirming with MR before I change it.I just discovered this weekend.
I'm using a firmware that @fromport post in his page. Number 20230414, this firmware contains the advanced setting.
Megarevo 8K Firmware Update
Turns out that my firmware does NOT have the generator sub menu. Do you know where I can get that version? Did you find it?
Signature Solar already have the manual with the advanced setting : https://eg4electronics.com/wp-content/uploads/2023/06/EG4-8KEXP-240-Manual-Ver.-1.4.0-1.pdf
This is on the latest, as of today, firmware HybridInverter8KSNA_v1.4.13.B03D25_20230427
It has the advanced settings, CT ratio setting, generator settings, parallel settings. So far I haven't run into a bug but it's only been less than 24 hours
.It seems that when using advanced settings it ignores the previous menu of self consumption/peak shift/battery first setting. Still wrapping my head around it all.
Planning to try this same fw out on dad's Eg4 8K setup, since we can't get the grid to charge the EG4 battery bank at night in Self Consume mode (Battery priority will do it but, we have/need Zero Export enabled).Pleaded to MR last night and they tried to update my inverters. I was told before hand but neither of us considered that the inverters were powering the modem. Anyway after I took my laptop in and upgraded them both we got TOU settings put in. Sure does add a lot more flexibility. I can now set it up to charge from the grid at a specified wattage which was an all or nothing thing before. And today it ran in self consumption mode so that once the battery was full it started exporting power to the grid. Only thing to nail down now is it only discharging the battery to 50% but I think it's just the daytime TOU needs to be 0-10%. Confirming with MR before I change it.
This is on the latest, as of today, firmware HybridInverter8KSNA_v1.4.13.B03D25_20230427
It has the advanced settings, CT ratio setting, generator settings, parallel settings. So far I haven't run into a bug but it's only been less than 24 hours
It seems that when using advanced settings it ignores the previous menu of self consumption/peak shift/battery first setting. Still wrapping my head around it all.
Spoke with SigSolar Support (Brent & Markus) about some of our issues and found out that the MR Fw is compatible/same but Eg4/SigSolar haven't released that version officially b/c Gen Input function supposedly wasn't working correctly... But we need to get that advanced menu #16 options more than we care about a Gen Input (to enable Grid Charge features)... Fun! We'll sell how it goes I guess this weekend.
If anyone with the MR /EG4 8k , Grid tie, PV & battery setup has any input on getting the advanced settings dialed in, feel free to chime in. See our Setup Post here and Grid Charge Issue here.
Beene Brothers
Owner
What scenario exactly are you looking to achieve? For me I have free nights so I'm charging nice and slow 8pm to 5am then running self consumption 5am to 8pm or until the battery is dead.
Updated bottom of previous post with links.
Basically what you're doing sounds like what we need to do. Just not sure how to set that up.
Currently run off solar during day in Self Consume (~20-24 Kwh pV generated per day, with ~33 Kwh usage, & 6x LifePower4 batteries) .... So battery ends up running down to about 25-40% SoC and never gets topped of by solar... Then at night it runs down until it hits 20% SoC and pulls from grid for load... And doesn't charge back to 100% or any thing higher unless switched manually to battery priority.
Would like to be able to self Consume from PV as much as possible and charge from Grid at night... Not much extra capacity with current 16 panel setup (2 strings of 8pnls) to charge from after supplying the critical loads panel at the moment until more funds are available for 2 more strings.
It's been suggested by SigSolar to move up the 18Kpv unit.
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