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Megarevo RxLNA Discussion

jsmetalcraft said:
I think you want active Island enabled also? You don't want to feed grid when it goes down.
Grid% is irrelevant in your case where you are not feeding a panel before the MR. If you are feeding a main panel between meter and MR then the Grid% will limit what it feeds the main panel when it gets to, in your case 80%, capacity of the inverter.

The manual from Signature Solar is the best I have seen but still very lacking.
Click to expand...
The island setting would be a good thing to test. I have a feeling that not selected or having it selected for enable will both work.
 
Slvrsky07 said:
The island setting would be a good thing to test. I have a feeling that not selected or having it selected for enable will both work.
Click to expand...
Any inverter connected to the grid requires anti-islanding functionality.
That is not something you are allowed to turn off.

jsmetalcraft said:
I think you want active Island enabled also? You don't want to feed grid when it goes down.
Click to expand...
I do not think this is what you think it is , see above.

I think this has to do when this inverter is part of an "island" and freq shifting is used to control the amount of power generated.
If this unit is down stream of another hybrid inverter.
But technically the grid could do freq shifting as well, so this is again an odd setup option IMO and we should ask MR for an explanation.

jsmetalcraft said:
Grid% is irrelevant in your case where you are not feeding a panel before the MR. If you are feeding a main panel between meter and MR then the Grid% will limit what it feeds the main panel when it gets to, in your case 80%, capacity of the inverter.
Click to expand...

jsmetalcraft said:
The manual from Signature Solar is the best I have seen but still very lacking.
Click to expand...
I have been looking at and is basically is the general version I have from BlueSun (one of the OEM's) but with some screenshots of the display.
Full with spelling errors and wrong config examples.
 
Is anyone else seeing this?
I put my MR on "self consume"
Today my battery charged up a lot (not to full) and when sun set, it started using the battery again until it hit the low limit setting.
When I look at the meter to the grid I see this (when it is dark outside, so no PV support)
Screenshot from 2023-01-01 20-10-48.png
It is pushing 700+ watt into the grid.
That is not what I would assume a setting with "self consume"
Is anyone else seeing this kind of behavior as well ?
 
fromport said:
Is anyone else seeing this?
I put my MR on "self consume"
Today my battery charged up a lot (not to full) and when sun set, it started using the battery again until it hit the low limit setting.
When I look at the meter to the grid I see this (when it is dark outside, so no PV support)
View attachment 127434
It is pushing 700+ watt into the grid.
That is not what I would assume a setting with "self consume"
Is anyone else seeing this kind of behavior as well ?
Click to expand...
Mine does the same thing but when on peak shift. Self consume doesn’t do that for me.
 
I contacted MegaRevo about the issues I have with Self Consume mode.
They sent me the following new firmware as a reply.

Let me know if/when someone has flashed it.
Would like to know what the version shows on the display.
I won't be able to flash it until probably 2 days from now.
 

Attachments

  • firmware_8k_2022-dec-10.zip
    967.9 KB · Views: 34
I can give it a try. My latest firmware before this compares as below:

V14_20220907 (old)
V19_20221210

v1.4.13.B02D02 (old)
v1.4.13.B03D06
 
This version has parallel mode but does NOT have generator option.

I am also getting alarms:

06: Grid low vol
08: Grid low freq

(edit: these eventually went away)

Which makes sense since I'm off-grid, but these don't occur on the previous version.


Some changes..
Setting menu now has option for RSD Switch, and setting the CT Ratio. Anti-reverse is now called anti-reflux. Run setting now includes grid reconnect timer.

20230103_173908.jpg20230103_175037.jpg20230103_175017.jpg20230103_175011.jpg

A few more issues which apply to my setup. Shutting down or disconnecting the slave inverter will shut down EPS of the first inverter. Old firmware didn't do this, and its an issue for me because I used to be able to restart either inverter without losing power to the loads. Also, I cannot set parallel charge voltages separate. This normally wouldn't be an issue, but one of my inverters reads 0.5v higher and I'm not sure how to recalibrate it. I tried in the stream software, but it didn't save the setting. As a result, the slave inverter will stop charging the batteries earlier because it thinks the charge voltage has already been met.
 
Last edited:
Yes, I went back to the old firmware (again).

If you disconnect ethernet cable, or turn off the RSD switch, it will turn off (reboot?) the master unit.

On the old firmware I keep flashing back to, I am able to set charge voltages separately as well as power off either inverter and the other will continue to supply loads. These features are more important to me than the latest changes. Please feel free to share that feedback with them.

The firmware I keep going back to is
20220602.axf
v2411_para.out

I think this is the first widespread firmware with parallel, and it also doesn't have generator control. If situation arises where I need generator, I'll just swap firmware for that isolated instance. I am up to 840Ah of batteries, so hopefully that is not often.
 
Maybe Will can use his pull to get better software made since that was his biggest gripe in the video.
 
Slvrsky07 said:
Maybe Will can use his pull to get better software made since that was his biggest gripe in the video.
Click to expand...
I was/am hoping that Signature Solar would have more pull as they get a few units out. Not sure how generous they will be with sharing firmware.

I have stuck with the parallel release also.
20220602.axf
v2411_para.out

Glad to see someone is in contact with them. I think this is what we need, providing feedback with real time results.
 
jsmetalcraft said:
I was/am hoping that Signature Solar would have more pull as they get a few units out. Not sure how generous they will be with sharing firmware.

I have stuck with the parallel release also.
20220602.axf
v2411_para.out

Glad to see someone is in contact with them. I think this is what we need, providing feedback with real time results.
Click to expand...
I also think money (== sales) is more effective.
I am still in contact with them, will keep you posted
 
Does anyone know how i can solve this issue. The power analysis page in Solarman business is unable to calculate.

Screenshot_20230104_153229_SOLARMAN Business.jpg
 
I'm not sure why that happens. Some days it works, some days it doesn't. I don't think it provides much helpful data that isn't shown elsewhere.

1672874256037.png
 
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