All you need to do is set the EXT IOx controlling that inverter to type 0 and the inverter should turn OFF this will show that remote ON/OFF works correctly then if you want the inverter to work up to UV lock or OV lock then set it as type 6 but not sure why you will want that.
There will be probably just a few extra minutes between the normal UV set default at 2.8V and the UV lock set at 2.5V so I do not see what will be gained from this. There is really no energy left between 2.8V (UV) and 2.5V (UV lock)
Maybe there is an extra 2% SOC at best so even with a small inverter and basically no load on that inverter that will not last long.
Best will be to set the large inverter as type 4 and set say a 30% SOC limit and have the small inverter set as type 2 so it will turn OFF at UV that way at UV all loads will be turned OFF and battery can survive until next day when sun can recharge the battery. If you discharge to UV lock 2.5V there is a risk that until charge source is available maybe a few hours the battery will self discharge to much and no longer accept a charge getting damaged.
On Monday, June 7, 2021 at 1:30:57 AM UTC-6 Dave Festing wrote: