Megarevo RxLNA Discussion

That’s a possibility. I’m using win 10. Can you try running in compatibility mode?

Pale1290 said:

I'm using Windows 11. I don't know if that has anything to do with it.

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Slvrsky07 said:

That’s a possibility. I’m using win 10. Can you try running in compatibility mode?

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I got a computer with W10 and it worked. But I want to see on the cell phone and it says it's partially disconnected. Thanks.

Pale1290 said:

I got a computer with W10 and it worked. But I want to see on the cell phone and it says it's partially disconnected

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Thanks

Cheap 4-life said:

What happens if the battery is full but the loads in the main panel exceed the max possible output of the inverter? Will the inverter switch to bypass, or will the main panel simply use the extra power needed directly from the grid and the inverter keeps pumping out its max possible output?

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There is a setting "Grid Power". The inverter will supply the main panel and EPS up to that setting and then let grid supply the rest of the needs. Otherwise it will over load the inverter and it shuts down. I think I have mine set on 95%. I see the inverter supply 7500 watts and grid picks up any needs above that. I generally average 500 watts on the EPS panel and not had the MR ever fault out with overload, but when I first got the unit and "Grid Power" was set to 100% I did have an few occasions where it did shut down to overload. I don't see any extra use of grid until it starts to reach the 7-7.5kw range.

Cheap 4-life said:

So what do you currently do when the main water heater needs to be heated?

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Currently both heater are powered from the same breaker in the main panel. They are in parallel with a DPDT relay right before the heaters. So only one can come on at a time. The main heater should not cool down enough when the secondary heater is heating that it will make much difference. 99% of the time there is no hot water use midday when the secondary heater is heating. Looks like it takes an hour to heat from cold, so the main heater will only be off for an hour or maybe bit more. I see it cycles about every 2-3 hours so plenty of time.

Pale1290 said:

This is what it gives. It says there are no files

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Move the file to the root of the drive. Example C: xxxxx.axf or C:xxxxx.out

jsmetalcraft said:

Move the file to the root of the drive. Example C: xxxxx.axf or C:xxxxx.out

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With w11 it doesn't work. I was able to do it with another computer that has W10. Thank you. The problem I have is that it is giving me false readings in the app.

jsmetalcraft said:

There is a setting "Grid Power". The inverter will supply the main panel and EPS up to that setting and then let grid supply the rest of the needs. Otherwise it will over load the inverter and it shuts down. I think I have mine set on 95%. I see the inverter supply 7500 watts and grid picks up any needs above that. I generally average 500 watts on the EPS panel and not had the MR ever fault out with overload, but when I first got the unit and "Grid Power" was set to 100% I did have an few occasions where it did shut down to overload. I don't see any extra use of grid until it starts to reach the 7-7.5kw range.

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your saying as long as you restrict the inverter (like you did by setting to 95%) to not supply over its max output, that the inverter will not shut down due to over load? And the main panel can use as much extra power it needs from the grid at the same time? 500 watts on the EPS panel from the grid or the inverter?

jsmetalcraft said:

Currently both heater are powered from the same breaker in the main panel. They are in parallel with a DPDT relay right before the heaters. So only one can come on at a time. The main heater should not cool down enough when the secondary heater is heating that it will make much difference. 99% of the time there is no hot water use midday when the secondary heater is heating. Looks like it takes an hour to heat from cold, so the main heater will only be off for an hour or maybe bit more. I see it cycles about every 2-3 hours so plenty of time.

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they just come on whenever their thermostat calls for heat?

Cheap 4-life said:

your saying as long as you restrict the inverter (like you did by setting to 95%) to not supply over its max output, that the inverter will not shut down due to over load? And the main panel can use as much extra power it needs from the grid at the same time? 500 watts on the EPS panel from the grid or the inverter?

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Whether the need comes from the inverter or grid it's a combination of the two. I think I can say that the EPS is top priority to the inverter. In other words it supplies the EPS and any extra feeds into the main panel. If the main panel needs assistance then the grid supplements.

Yes the heater work as they normally would. When the thermostat calls for heat they turn on. Just in my case only one of the heaters has power at once, so even though they both call for power only the one that has power can heat. The other would be in standby because it has no power feeding it. Main tank is on NC and the secondary is on NO on the relay. If the battery is below 53.5 volts only the main heater has a connection to power. When the battery is above 53.5 the voltage monitor energizes the relay, the main heater is disconnected, and the secondary heater receives power.

My batteries reach near 55 volts when fully charged. When BMS tells charger that they have reached 100% SOC the inverter quits charging. Usually within an hour the batteries will settle at or below 53.5 volts but still be near 100% SOC. So it is when the batteries are getting close to full charge that the relay switches and allows the secondary heater to become a dump load. In theory, it should come on when batteries are within 90-95% SOC and on good days there is still some PV left to finish the battery and heat water. I have yet to have a good day that I can monitor how well this will work. I have 24kwh of battery and they are sitting at 10% so takes most all day to charge if there is some sun. In the summer they are charged by 1pm so will have plenty of time to heat a tank of water. Once the batteries are charged and settle to 53.5 the relay will switch, turning off the secondary or dump load and the main tank will have the connection.

Does anyone have a newer GSL version of this inverter? My in laws one just arrived. The manual says it’s a touch screen but it looks like mine just that theirs has a green stripe across it. Also it has a rs485 cable running to the screen and plugged into the meter port where as mine does not. We don’t have a way to power it up yet, just wondering what to expect with the screen.

minerva said:

Current firmware does not allow any tweaking of the export over zero. That will be available later supposedly.hello. w

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minerva said:

Current firmware does not allow any tweaking of the export over zero. That will be available later supposedly.

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Hello. What's the current latest version on the 8k megarevo?

askel said:

Hello. What's the current latest version on the 8k megarevo?

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Afaik:
hybrid_app8K_V14_20220907_gen.axf
HybridInverter8KSNA_v1.4.13.B02D02(1).out

fromport said:

Afaik:
hybrid_app8K_V14_20220907_gen.axf
HybridInverter8KSNA_v1.4.13.B02D02(1).out

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Thanks for the response. I installed that firmware and when I checked the inverter firmware afterwards it said the versions are ARM V1.03.06 and DSP V1.04.06. These numbers appear lower than the previous version. Previous version was 1.03.09 and 1.04.09 resp. I have a friend who installed an update on their 8k and the versions after the update were very different. His updated version is 1.03.12 and 2.04.12. So now I am confused as to which is the latest based on the numbers. Megarevo says that the ones ending in 06 are the latest. Any thoughts on that?

Hi Team

Can anyone say what is the latest firmware for the megarevo 8k and how much power does your inverter consume.
My inverter is consuming over 400w

Eg, pv 4890w , battery receiving 3970w and house consuming 497w
4890-3970-497=423w

Inveter consuming 423w

kramtulla said:

Hi Team

Can anyone say what is the latest firmware for the megarevo 8k and how much power does your inverter consume.
My inverter is consuming over 400w

Eg, pv 4890w , battery receiving 3970w and house consuming 497w
4890-3970-497=423w

Inveter consuming 423w

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Using Solarman as a guide on how much your inverter is using is useless at best.

I think the latest firmware is posted above, but reports are it has issues. The last post with the numbers make it confusing if the file is wrong or more then likley the programmer does not follow any reasonable numbering system. Might be reasonable to conclude why the progress of new functions/features are very slow.

jsmetalcraft said:

Using Solarman as a guide on how much your inverter is using is useless at best.















I think the latest firmware is posted above, but reports are it has issues. The last post with the numbers make it confusing if the file is wrong or more then likley the programmer does not follow any reasonable numbering system. Might be reasonable to conclude why the progress of new functions/features are very Slow.

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Thanks

My inverters seem to use around 70-80w each according to battery discharge.

Anyone having an issue with battery charging current? It seems my inverters are maxing at 56A to the battery. I can change the charge current lower, and the inverters will go right to that setting, but if I go above 56a, they won't go over. I know its not PV capacity because when I turn on more loads, the PV will increase to cover the load, but battery stays at 56a.

What does it say on the BMS info screen for charge amps?

NCSolarGarage said:

Anyone having an issue with battery charging current? It seems my inverters are maxing at 56A to the battery. I can change the charge current lower, and the inverters will go right to that setting, but if I go above 56a, they won't go over. I know its not PV capacity because when I turn on more loads, the PV will increase to cover the load, but battery stays at 56a.

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what is the temp on the batteries? are you using (canbus) communication with the batteries? that will also tell the temp of the batteries to inverter and would possibly limit the charge current.

This is my temp chart of yesterday of both inverter & batteries:

I see no limitation of charge current at my setup.

I'm using lead-acid mode, there is no reporting to inverter. Maybe that is the issue? Temperature is not an issue as my shop is heated. Maybe the inverter not seeing temp is limiting, though. I've tried changing settings and rebooting and nothing has helped so far. Looking back at the logs, it seems this has always been an issue, and I didn't realize it.

Here is battery current, for example.

I have had issues with the charging for long time. While I am able to get more then 56 amps, anything over a setting of about 65-70 the unit goes crazy at times. I now have two batteries connected so I have been running 125 amps. Charges great until the batteries get to 54.5 volts and then the MR starts it's crazyness. Have not figured it out yet. Running Lithium mode with canbus.

NCSolarGarage said:

Here is battery current, for example.

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Here is my charge current about a month ago

111 amps with no problems
I have 4x (15S so lower voltage) 120Ah batteries in parallel with canbus communication.