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David at SolutionCentre

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  1. Sorry - should have given model number! It is MKS-5K-B I have been given some useful help by Yani who writes the MultSIB software. Happy to share setup details. The one remaining problem is that the system correctly swaps to GRID (USB) after using batteries at night, but then does not swap back to SBU mode in the morning. I am trying to get the system to set higher priority for the battery than Utility, but the mode remains stuck in SUB (Solar-utility-battery). I can manually switch to SBU but that means it would not automatically use batteries for the first part of the night. You will note that the system is currently in SUB mode which happened at approx 8h10 when solar PV was enough to take over the load. It would be nice for the system to be in SBU mode! Has anyone else succeeded in an automatic switch to SBU?? David.
  2. We have recently commissioned a solar project - It consists of - 2x Axpert 5kW inverters 2x Pylontech 3000C batteries 24 x 465W PV panels (2x 5085W banks) We installed the MultiSIB software on RS232 and RS485 and configured change over from grid to battery - it works in one direction (to grid - SUB mode) but does not switch back to battery (SBU mode). Settings are as follows - Charge - solar only Source to utility change 47V Source to battery change 48V Battery low/cut off 45.9V Battery type USER Bulk charge 53.2V Float charge 52.5V Mode control in MultiSIB SOC to grid 35% Grid mode SUB/Solar First Time to change 10:00 ANY SOC - to SBU So - here's the issue -> Change to SBU does not work - we have to set SBU mode manually every day. The change back to Grid works fine and low voltage and low SOC also appears to work fine. Any recommendations are welcome!
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