diy solar

diy solar

Megarevo RxLNA Discussion

That is exactly what it is. My battery is 560 ah (2x 280Ah). I changed that setting and immediately the fan ramped up and I'm charging 95A. I flashed back to old firmware and it works there too.
 
Does anyone know why grid current is always so high. Because of this the daily energy purchased value increases when nothing is being consumed from grid. The correct values are the consumption currents. I don't think it's abug of solarman because the statistics are also on the lcd. I measured with a clamp meter.

The CTs are facing towards grid and anti reverse is enabled.
 

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flygeek said:
Starting work on decoding the communications between the Solarman stick-logger and the Megarevo. Not going quite as smoothly as I'd hoped, but some pieces are coming together.

I pulled apart the stick-logger and attached the circular adapter connectors to a breadboard and injected a Waveshare RS485 <-> Ethernet connector into the mix. I've tried having a Modbus conversation with the device, per the Goodwe spec mentioned earlier in this thread - but I've obviously got something configured incorrectly. What's giving me a little bit of hope is the fact that in one of the returned bytestreams the inverter serial number appeared.



I've also found the firmware version and 8K as a string.

There are a bunch of attached pictures of the components of the stick-logger + the unit plugging into the inverter once disassembled.

More details to come...
Click to expand...
Have you gotten this to work yet? I can’t seem to get any response using a usb rs485 adapter to read the modbus on the inverter using the pins the SOLARMAN uses.
 
Slvrsky07 said:
Are you charging batteries?
Click to expand...
No not charging batt. The energy meter isnt moving. But it showed such a high current. I think i have figured it out. Just need a few days to confirm. One of the CTs was facing the wrong direction.
The leadacid battery soc issue still remains.
 
vinaytje94 said:
No not charging batt. The energy meter isnt moving. But it showed such a high current. I think i have figured it out. Just need a few days to confirm. One of the CTs was facing the wrong direction.
The leadacid battery soc issue still remains.
Click to expand...
Maybe the SoC feature only works when communicating with a bms.
 
Hello. Is there someone who can help me and explain. My megarevo 8k brought this program from the factory and I turned it off so that it would not export. But it continues exporting even if the disable option is present. Is there something else I have to do to make it not export. Thanks in advance.
 

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jsmetalcraft said:
Anti Reverse Enabled?
I wonder if your wire is to small for the CT to read correctly?
Never hurts to turn them around and see what happens.
Click to expand...
is reading well. What happens is that the anti-reverse is disabled, however it wants, it sends the current to the counter and the count is in reverse. On the counter physically. I don't get carried away by the graph. Only physically on the counter.
 
Slvrsky07 said:
Maybe the SoC feature only works when communicating with a bms.
Click to expand...
That's really stupid tho, it should be able to calculate this based on the capacity and voltage. The deye inverters whom they desperately tried to copy does this automatically when selecting leadacid
 
Pale1290 said:
is reading well. What happens is that the anti-reverse is disabled, however it wants, it sends the current to the counter and the count is in reverse. On the counter physically. I don't get carried away by the graph. Only physically on the counter.
Click to expand...
No update has been done either. It's from the factory.
 
vinaytje94 said:
That's really stupid tho, it should be able to calculate this based on the capacity and voltage. The deye inverters whom they desperately tried to copy does this automatically when selecting leadacid
Click to expand...
Did you make sure the voltage settings are right on lead acid? You would think it would be based off of voltage like you said in that mode
 
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