Im having issues with assistant settings to trigger ac input ignore more than once.
I want my system to run in off grid inverter only mode most of the time.
I only want to trigger ess once soc goes above 95% ,this is so that excess solar can go out to the grid from my pv inverters to keep my generation meter running as i have a feed in tariff (no smart meter)
I also want to go back on grid as ess once soc falls below 20% so i can use grid power once the batteries have run down too low.
I set assistants as , relay, general flag, ac ignore, and have set the general flag relay to turn off (meaning not to ignore ac in)when the batteries reach 95%soc, and this is working perfectly, (when they go below 95%soc the ac ignore kicks back in again) but at the low end ive set general flag to turn off at 20% but its not doing it. So instead i set it as general flag to turn on at 20% but that too does not work.
So what im asking is, can the soc be controlled twice on a programmable relay?
What am i setting wrong if two relay options should work?
Maybe not what you’re looking for but I control the off grid inverter only mode with Node-Red.
Try wire the gx relay to the temp or aux.
Set the temp/ aux to drive the primary relay.
Set the relay as Gen start stop.
Could you or anyone possibly let me know the node configuration needed for what im trying to do as in my drawing?
ESS is designed for what you describe?. Why do you need to totally ignor Ac between certain Soc % when Ess would use dc to supply Ac, if dc sufficiently available.
Because it keeps putting power out into the grid which uses my battery power, and takes power from the grid which i have to pay for. Ive set the grid setpoint to -30 but it still jumps between -200w to +200 on occasions but mostly between 50w ±, and throughout the day this mounts up. So i would prefer to be off grid if the soc allows.
To set the configuration in your pic with Assistants, you would use 3x instances of Programmable Relay. Eg…
PR#1 -Ignore Ac (sets a default state)
PR#2 -Above 95%, AC ON
PR#3 -Below 20%, AC ON
The order is important, you may get a different result if you mix that up.
How this works with ESS (also an Assistant) I have no idea. But I’d be inclined to try them after ESS. General Flag can go anywhere.
@mfred868
Have you worked with node red before?
Is this a different way to ignore ac in, or do i still need set general flag as ignore ac in, then set programmable relay to genral flag?
I briefly gave it a go, but soon gave up, its too complicated for me
It certainly is alot to take in.
I can write a small flow for you, but it does not always translate to another system you would need to be able to check on it.
The simplest way for non software people is the assistant to drive the primary relay using the GX generator relay.
It has been mentioned before but use the GX generator start stop. Wire the relay to the aux of the multiplus. I have it configured this way as I don’t want any feedback to the grid and ESS always lets some slip by.
Ok thanks guys, ill try the generator function with the gx relay wired aux1 on the mp, so can you please tell me how to configure the mp to acknowledge that i want the ac in relay set to off between 20% to 95% soc?
Which relay is regarded as the “primary relay” and do i still need to use general flag-ac ignore?
A flow configuration chart would help the world.
Thanks again
I’m not a Node-Red expert an use almost only the function node which is … javascript.
So, to fix your problem, just use if then.
So ive just tried using generator start stop on gx wired to mp aux and controlling general flag ac ignore.
I set it to ignore ac in from 20% up to 95%, so during this area the generator is set an on, but ti trigger the ac ignore, so once it reaches 95% it gpes back into ess mode and allows excess to be exported, but the trouble is that the generator function stays off (not triggering ac ignore) all the way unil it reaches 20% again, then ac in becomes ignored and the battery continues draining below 20%.
This method obviously will not work for what i want the system to do.
I basically need two on off areas, one at the top and one at the bottom end. Can this be done?
Of course it can be done. To Ignore AC you need 2 PR Assistants, one to Ignore, the other to Not Ignore. To make another decision you need a third PR Assistant.
See my post above. The one you said was “too complicated”…
This is exactly what i did with the assistants, i assigned general flag to ignore ac input. Then programmable relay-general flag , off when soc lower than 20% and also off (off meaning ac in is active) when soc reaches 95%
I had it working just for one switch on the 95% area, it switched general flag off and allowed ac in to activate again, then when it dropped below 95% it switched back to ac ignore. I then waited a few days with bad weather to let it drop to 20% but the ac in was never reactivated and it remained as ac ignore until i cancelled it before the batteries went too low. Ive attached a summary photo of my assistants. Can anyone please draw me out a flow diagram of the way i should set my assistants for this to work, being that it should?
Only one General Flag instance is necessary.
You have no PR Assistant to Set Relay ON. Put that before the other two OFF instances. No conditions required to switch ON, the later ones set the conditions.
I have added a programmable relay assigned to general flag - ac in ignore to on, without choosing a soc value. Shiuld this work?
Just realised i put it after the two offs, ill correct this late, im not uploading it to the mp until after work, dont want a power cut while working lol