Replies: 11 comments 32 replies
-
|
I'm not aware of a way to get the backup interface status through modbus, so right now it's not possible. If someone is able to find out registers for the backup interface I will be happy to add it to the integration. |
Beta Was this translation helpful? Give feedback.
-
|
@CH-Tefi For the time being you could compare the current states on the grid side and inverter side to detect if the backup interface is in backup mode. |
Beta Was this translation helpful? Give feedback.
-
|
I handled this with an ESP8266 + a Photoelectric sensor, and a bit of YAML attached to the green LED on the front of the BU interface. The light will normally flash with a cadence of about 800ms, and will change to solid ON when in backup mode. I even added a second 'device' within the same physical sensor that can detect if the light goes out for more than 2000ms and can alert that there's a problem. For completeness sake I don't trigger unless the light is solid ON for more than 1200ms. It's not the most ideal solution but it's been pretty steady through a couple outages. -darkwind |
Beta Was this translation helpful? Give feedback.
-
|
My LED indicators are quite different: https://knowledge-center.solaredge.com/sites/kc/files/se-home-backup-interface-three-phase-quick-installation-guide.pdf |
Beta Was this translation helpful? Give feedback.
-
|
Nice that they've separated the backup LED into its own. That would have made my project so much easier! I have the 1ph variant (and what looks to be the older model of backup interface) -- To the topic at hand I'd love to help get the registers so we can get the info over modbus but that is above my grade. I'm also fighting with what looks like firmware 4.20.32 has caused modbus to not respond to @WillCodeForCats's integration. I'll leave that for a separate topic. Currently I use a mix of the status LED + the cloud API (with a check if it is available and a delayed action if it becomes 'unavailable') to determine battery levels and if I need to shed any load. The loads in my house do not require immediate shed if I go to backup but I do try and stage some limits to extend battery longevity if possible. -darkwind |
Beta Was this translation helpful? Give feedback.
-
|
Just to reply to myself -- I isolated the firmware issue to looking like the auto-detection is causing the inverter to close the TCP connection with " AsyncModbusTcpClient.close() got an unexpected keyword argument 'intern'" (my bad for keeping the auto-detect features for batteries and additional entities :)) Guessing Solaredge is adding features to close connections if the query isn't 100% what is expected. -darkwind |
Beta Was this translation helpful? Give feedback.
-
|
That's probably a new pymodbus bug. |
Beta Was this translation helpful? Give feedback.
-
|
if it helps this is the snippet of debug log that I was troubleshooting with. If you need any more let me know: File "/usr/local/lib/python3.12/site-packages/pymodbus/client/base.py", line 179, in async_execute |
Beta Was this translation helpful? Give feedback.
-
|
I came to this thread looking for the exact same answer to the same question as I now also have a backup interface and have setup dynamic reserve allocations based on weather warnings. I was wanting to power off some high power devices if running on backup. What data/information would be required to explore the option of exposing this information via the module? I'm happy to poke about and gather anything which might be viable and of use |
Beta Was this translation helpful? Give feedback.
-
|
Hi, I can confirm that the AC frequency and current both register no value when running on the battery during power cut, as the enclosed screenshots show. Hope that helps to build an automation. 
|
Beta Was this translation helpful? Give feedback.
-
|
Morning @smithy70, amazing thank you. Do you happen to know from your HA logs or entity history what values those sensors report during the outage period? I'm wondering if it reported as Unknown/Unavailable rather than a numerical value, thus can use those conditions in an automation. I'll have to go turn off our mains at some point to validate as well, but need to coordinate with the mrs to keep the peace :) |
Beta Was this translation helpful? Give feedback.
-
|
Hi, History attached, looks like it reports unknown. |
Beta Was this translation helpful? Give feedback.
-
|
you hero @smithy70 , thank you for taking the time to share the info and double check the value in your log, I appreciate it. I think I'll look to build an automation using both of those entities to make it less likely to get a false positive result. I think I'll also have it wait for a short period in case it's a temporary glitch before it decides to power items down. |
Beta Was this translation helpful? Give feedback.
-
|
I'm also looking into this. I had a grid power outage this morning for approx 15minutes, and my battery kicked in during this time. I also noted what @smithy70 mentioned; the AC goes to a non-numerical value during this time. For a loss of grid power with the battery running - the AC was "unknown". However I can also see a previous outage, where I lost grid power and my battery was already empty, and that the AC was "unavailable" - because my HomeAssistant also has a UPS, so it kept the power, but the inverter itself was offline. So "unknown" means your inverter has power, but no mains, and "unavailable" means your inverter has no mains power (or you lost the network connection). Secondly - I can confirm that my battery actually stayed in "B_STATUS_CHARGE" before, during, and after the outage. The reason is because the outage occurred mid morning and was a particularly sunny day here - so the battery was charging even with the outage due to my solar production exceeding my requirements during the outage. So you cant use the battery status to determine if you have lost grid power. So is it possible to have a "grid power available yes/no" entity built into this module, based purely off if the AC is a number vs unavailable? That alone is probably going to be the right answer. And then using that entity, we can build various automations if it changes etc. Secondly - SolarEdge itself must be detecting this "somehow" - because their app alerted me of a power outage, and when the power was restored, even though the battery kicked in. So either this is an extra official sensor somewhere in the inverter we dont know about, or they are also using the loss of AC as the indicator. In addition - I have a single phase house. Even with single phase, the other 2x phases that are normally "0" also reported a non-number value during the grid outage. See photos. Then all the various "AC Voltage XX" numbers entities also showed gaps. See photos.
|
Beta Was this translation helpful? Give feedback.
-
|
For now in NodeRed I'm just doing an "event state" node change, and checking the M1 AC Current node. If it reports a non-numercial value using the regex, I mark a toggle "mains outage in progress" as true. Then all my other functions are set to react to a "mains outage true" event and respond accordingly (i.e. turn off things I dont want to run on battery during an outage).
|
Beta Was this translation helpful? Give feedback.
-
|
I've setup the following, but yet to test it properly.
I added a delay incase of false positives and to stop ping/pong in case of power up/down events rapidly. |
Beta Was this translation helpful? Give feedback.
-
|
If you see my post above - you might want to accept both "Unknown" and "Unavailable". For the delay - I noticed my polling of the Solaredge is only once every 5minutes, which is the default, so I lowered it to 2minutes. So you wont ping/pong faster than your poll rate. However, funnily enough, as I did that, the entity went briefly offline as HA reset the status, so it triggered my "mains power outage" boolean. I'll leave it for now - see if it happens often or not before I add a delay. For me, if the battery kicks in due to power outage, I want to react quickly to turn off some of my heavy power things... |
Beta Was this translation helpful? Give feedback.
-
|
I have my polling setup once every 2 minutes, thus the timing of 2:10 to avoid any possible one time glitches whihc may corrcect with the next update. I'll have to test this at some point, however currently waiting on some more storage to arrive for my HA server since it ran out of space and b0rked :/ |
Beta Was this translation helpful? Give feedback.
-
|
Yeah - I've just added a 180s delay. I had a "false positive" instance today where the modbus failed for a single poll randomly, so it became So now I'll just do a 180s delay with the ability to be cancelled if power returns before then, and see how it goes.
|
Beta Was this translation helpful? Give feedback.
-
|
I was wondering if the meter event referenced on p19 of the pdf attached able to be added as a sensor? M_EVENT_Power_Failure 0x00000004 Loss of power or phase |
Beta Was this translation helpful? Give feedback.
-
|
It already is. |
Beta Was this translation helpful? Give feedback.
-
|
Yes, I found it, thanks. Mine is and has only ever reported "0", do you think there is a difference between the Home Backup Interface built in meter compared to the SolarEdge SE-WND-3Y400-MB-K2 standalone device? |
Beta Was this translation helpful? Give feedback.
-
|
I have a SE Battery, 2x SE5000H-AUS3MBX14 inverters and a SE-MTR-3Y-400V-A, all connected to home assistant. None of these reported a "M_EVENT_Power_Failure" in any of the logs of my outage. I just double checked. The M1 Meter events are only ever Is it perhaps not using the flag hex correctly and displaying integers instead of the raw hex values underneath? |
Beta Was this translation helpful? Give feedback.
-
|
It's actually a bitfield, but the sensor will display as an integer. Each bit corresponds to an event. In the attributes you will see Events and Bits. Events is a list of active events or an empty list Here's an example from my simulator: 
|
Beta Was this translation helpful? Give feedback.
-
|
Example with multiple events: 
It would be easy to make these all individual binary sensors in the integration if that's useful instead of the bitfield sensor. |
Beta Was this translation helpful? Give feedback.
-
|
Ok - thanks. FYI in my history the attributes remain at 0x000000 and there are no events, even when the power outage occurred. Are the bits been captured the raw output of the sensor? Can we capture the raw output somehow and I can trigger a fake power outage on my system with my electrician who's coming around next week for a different reason? See if we can capture anything to help work out why its not working? |
Beta Was this translation helpful? Give feedback.
-
|
Sunspec length of 105 doesn't include itself or ahead of it, so 105 meter data points plus 1 for DID and 1 for length is 107 total. In |
Beta Was this translation helpful? Give feedback.
-
|
Thanks for clarifying. |
Beta Was this translation helpful? Give feedback.
-
|
To confirm: I did some testing and read modbus address 40293 (2 registers) directly from the inverter and when I cut the grid still 0 (zero) is read from this address. This is for the Backup Interface integrated meter. So be it. |
Beta Was this translation helpful? Give feedback.
-
|
I haven't personally tried anything with my meter to see if it will report any meter events. I was going to try removing one voltage line and remove a CT to see if it reports any error conditions. Note to anyone thinking about trying this: if the current transformer doesn't have a built in resistor, disconnecting a CT under load is dangerous and the CT leads must be shorted to remove it from the meter. I wanted to get a WND-M1-MB to try out since that model of meter has separate power input from the line voltage sensing inputs. It also has error registers on its modbus list. |
Beta Was this translation helpful? Give feedback.
-
|
Three weeks ago I asked SE support why this inverter register never is set. The status of this case/request is: 'In Progress'. Will report back here... |
Beta Was this translation helpful? Give feedback.
-
|
Please try Release v2.4.17-pre.3 for Grid Power Available binary sensor. |
Beta Was this translation helpful? Give feedback.
-
|
Thank you! update and try this out |
Beta Was this translation helpful? Give feedback.
-
Good morning
I've installed a backup interface on my solaredge.
How can I detect, if the backup interface in backup mode, to reduce the power consumption via an automation in HA?
many thanks for any help
Beta Was this translation helpful? Give feedback.
All reactions