Solis inverter settings

what is the BMS telling to the inverter ? Is this the battery’s BMS or what? If you see 7A BMS then the batteries controller is the problem not the inverter

note that from certain percentage the batteries limit what you can charge to them. Currently my batteries from 95% upwards report the usual max charge but the inverter will only push 50% of that total the batteries. I have a ticket with them to get that solved as that is their firmware new behaviour ( that is not good ! )

charging from 95% onwards will only happen at 50% of what the BMS allows. They have a bug in the firmware.

Hi

I had the same issue that is now solved but I forgot to update this thread.

You need to disable “Battery Saving” in the Battery settings section.

For some reason, it defaults to Enabled in the latest firmware update.

As far as I understand it; this setting allows the inverter to use the grid to power itself rather than taking battery power to do it, hence the name “Battery Saving”.

Once disabled, I found a grid Export Calibration offset value of 5W is perfect to ensure there is no unwanted import from the grid.

Hi guys

Trying to configure my solis to discharge the battery to 10% right before the cheap pinergy ev window at 2am.

Ive set a discharge period of 00:30 to 02:00. There are two scenarios I’d like a solution to:

1. Discharge window insufficient to fully discharge battery. Eg. SOC goes from 80% to just 30%. I can extend the window but that increases the occurrence of scenario 2 below…
   
2. Battery SOC started the window lower at say 50% and discharges to 10% well before 2am which means the house load gets supported by the expensive grid import.
   

Any suggestions? Can I use the SolisCloud API to change the window daily?

I'm using Home Assistant to do this; normal discharge time is from 00:30 to 1:59, to 10% (my Wecos will drop to this from say 70% within the time), but I have an automation that stops this if the time is before 1:30 and the charge hits 15% to leave some juice. So if it is already below 15% at 00:30 it won't force discharge at all.

Have been using the Solis integration at https://github.com/hultenvp/solis-sensor until now; after an inverter and datalogger update I have had lots of trouble with SolisCloud timing out so will be moving to local control with a diiferent integration imminently using the older datalogger than allows this. The firmware I used to be on switched slots off by having the same start/end time, so the "turn off" automation sets the end time to 00:30 to match the start time. And then I have an automation that runs the next day to pop it back to 1:59. I now have that repeat later in the day in case my datalogger has a wobble the first time.

On the new firmware with six slots and an on/off switch now so may move to using the switch if that is exposed rather than my current end time approach. Am VERY much looking forward to local control and real-time reporting.

Here's the automation that set's the end slot to 00:30 (was done using the GUI, originally):

alias: Solis - set discharge time to 00:30
description: ""
triggers:

• trigger: numeric_state
  entity_id:
  • sensor.solis_remaining_battery_capacity
    below: 15
    enabled: true
    conditions:
• condition: time
  after: "18:30:00"
  before: "01:30:00"
  actions:
• action: time.set_value
  metadata: {}
  data:
  time: "00:30:00"
  target:
  entity_id: time.solis_timed_discharge_end_1_2
• action: button.press
  metadata: {}
  target:
  device_id: MYIDNUMBERWASHERE
  data: {}
  mode: single

Thanks to you both, really appreciate the detail.

Unfortunately I have the newer data logger which does not support RS485 over TCP.

Is the SolisCloud API that bad as to be not fit for purpose?

Quick question please, on the solis app I can see that the charge time slot is between 02.00 - 06.00, if I change that to 02.00 - 08.00 will that ensure that the battery doesn’t allow discharge before 08.00 or is there another way to do it.

A few of us are in the house & well up before 08.00 to shower / breakfast so I’m thinking no need to be taking anything from the battery before 08.00 as the same tariff is available from the grid that I used to charge the battery overnight

Thanks

What value do folks use for house load in home assistant for Solis?

I'm using sensor.solis_inverter_123_solis_plant_total_consumption_power (123 replaced with my device) it doesn't always appear to accurately reflect the house load though

Probably the way to go..

They do work, but a wrinkle is that once you hit the stated SOC it is then going to start pulling from the grid to cover load for the rest of the slot, rather than continuing to keep discharging from battery to load down to your entry for the battery's limit of SOC as you might think. Or at least it did for me. Hence the need to responsively turn off the discharge slot in some way via an automation.

Would like to see those scripts!

Is there a way to show actual daily profit in the android app. So like after all exports minus imports, it has all the info about my tariff and times.

Yeah @josip the inverter can spike when you get a mix of sun and clouds at peak. Plus when you have spare capacity in the battery and an oversized array it's inclined to go above the listed output specification as it can push dc load to the battery with spare capacity for ac . Today I had a few periods of over 7 kw