After yesterday's firmware update, Grid Support is supplying 280-310 in ALL cases, regardless of load, PV availability, or SOC%. Occurs when Grid Support menu item SOC% or Breaker is selected. Only way to stop and allow PV to supply the entire load is to shut off the AC Input breakers. Anybody else verify? Both the MNGP2 & Rosie were updated followed by a 'Factory Reset' of all parameters. The 'Hidden' menu items have been unlocked, but none of them selected. Mode select is Off-Grid.
Dave
Dave,
280-310 what? Watts? Are you saying the grid is supplying that power? Also grid sell is in the newest update? Doesn't say that in the description of the beta software.
From what I understand GRID SUPPORT was changed until some other solution could be decided on. Older Rosie code would "push back" at the grid to try and keep power from "coming in" but a lot of the time Rosie would "push back" past zero and actually "sell" or export up to 200 watts. This caused the "power police" to pay a visit to two of our testers and they got read the riot act on selling without permission aka a "Net Metering" agreement.
So from what I see in GRID SUPPORT mode the present code will stop at a positive power to avoid this. I hope to suggest that engineers add a setting so a user could adjust the incoming from 300W to 0 watts and let the user be the one to cause the slight sell issue and if they get a visit from the power police then they can tune it back.
Sell mode needs a little work for adjustments, it's really not ready for beta testing yet and you will violate your agreement if your installation has been permitted & inspected as Rosie does not yet have Listing from a NRTL to start selling.
I have SELL MODE on and set to use "voltage" set to 54.2V, my FLOAT setting. Rosie will export any power to maintain that setting up to 7000 VA and stop if there is not enough incoming battery charge to maintain 54.2V. I suspect the max sell will need to be decided on as well as it probably won't be 7000 watts, they need to consider power factor limits.
Using SOC% to sell will sell all day as long as the SOC% stays above the setting. I have tried 80% and what this does is sell during the day if SOC% is above 80% and will continue to sell after sundown until the battery is at 80%. Rosie won't start selling the next day until SOC% gets above the 80%, I don't know what the start % is but I would guess 2-3% above to provide hysteresis.
The main software engineer had to jump in and help the "Little Rosie" team get some code done so Little Rosie could get her NRTL Listing then he will be back on Big Rosie code. He needs to get Rosie Stack coordination tuned along with 3-Phase using 3 Rosie Inverters.
Quote from: Wizbandit on August 31, 2024, 07:06:23 AMFrom what I understand GRID SUPPORT was changed until some other solution could be decided on. Older Rosie code would "push back" at the grid to try and keep power from "coming in" but a lot of the time Rosie would "push back" past zero and actually "sell" or export up to 200 watts. This caused the "power police" to pay a visit to two of our testers and they got read the riot act on selling without permission aka a "Net Metering" agreement.
So from what I see in GRID SUPPORT mode the present code will stop at a positive power to avoid this. I hope to suggest that engineers add a setting so a user could adjust the incoming from 300W to 0 watts and let the user be the one to cause the slight sell issue and if they get a visit from the power police then they can tune it back.
Sell mode needs a little work for adjustments, it's really not ready for beta testing yet and you will violate your agreement if your installation has been permitted & inspected as Rosie does not yet have Listing from a NRTL to start selling.
GREAT INFO, thank you so much! I tried out the Grid Sell/Voltage today and it works like a champ. It appears the Grid Sell function made the 'older' Grid Support function inop. What I'm referring to is you could set Grid Support SOC% to a number and the AC IN would wait until you went below that SOC%, then would kick in power. Now, even w/Grid Sell 'disabled', it appears AC IN will supply the load regardless of SOC%/Voltage, so these options are tied to Grid Sell. A separate menu item for Grid Sell would be great and separate this out from 'normal' AC Grid support.
I did find a work-around for the Grid Support providing aprox 300 watts even when batteries are full and extra PV. Under AC Input Control, I set the Load Xfer to 5000 watts and Enabled. You could set any wattage above your 'normal' load to keep Rosie from providing AC Input. CAVEAT .... Grid Sell does OVERRIDE this setting, so if you try to Enable when Grid Sell is active, Rosie will Disable it.
I get why Midnite made this change to keep folks legal from pushing back power. Would be nice under a 'Grid Sell' menu to have a time menu to set on/off schedule. Then you could do the opposite time under the existing Xfer Start/Stop menu and these settings could co-exist.
Quote from: Wizbandit on August 31, 2024, 07:06:23 AMI have SELL MODE on and set to use "voltage" set to 54.2V, my FLOAT setting. Rosie will export any power to maintain that setting up to 7000 VA and stop if there is not enough incoming battery charge to maintain 54.2V. I suspect the max sell will need to be decided on as well as it probably won't be 7000 watts, they need to consider power factor limits.
So far, my system Export Max appears to be 5000 watts, when adding the AC Out load and the Export (-AC In) together. I have a 200 Classic that also contributes PV to the system (battery wires connect to the battery 'in' on the Hawkes Bay), and would contribute to the Rosie Export, but would throttle back once the 5000 watt limit was hit. I'll have to do a bit more testing to say this is true for all settings.
For referance, I'm using 'Off-Grid' for the Mode under SYSTEM CONFIG. Haven't tested Grid Tied or Grid Interactive yet as I don't know if they actually are functional yet, and if so, how they might interact w/other settings. Any insight on these settings would be greatly appreciated!
Thanks Midnite for pushing this to field for testing and improvements. Just keeps getting better and better! :)
Dave