Recent content by mmx01

So the prototype is up. I have tested adding modules and removing modules with inverter running. Inverter recognizes this ok and adjusts settings as expected. When all modules are disconnected but the bridge is still transmitting, it defaults to empty frames 0x00 which disables...

Pylontech V1.3 these are alike with goodwee's etc. and in the same document there are references to v1.0, v1.3 so it could mean anything. Pylontech v1.0 from 2016 does not have 0x70 and 0x371 frames but the one in the link below does. https://solaranzeige.de/phpBB3/download/file.php?id=2373

Good point, JK-BMS on alarm condition sets charging current to 0 so avg of amps / modules cnt pushed out is adjusted but not all BMSes may work like this and indeed referencing this to alarms makes sense to make it universal. I was looking for more info on this since newer protocol supports...

I am moving on with the project. After playing with Victron smart shunt, it is good for SOC/V/A but it has no idea of knowing how many battery modules are active when configured in parallel. Let's say any one is cut by BMS due alarm condition and with 3 modules we reduce charging capacity by...

Exactly. My growatt even ignores BMS alarms with can comm established. I tested sending to it various fabricated alarm inputs from over temp to over power or requesting bulk charging but it does not care. When set to Li it really only cares about SOC & Vbat. I tested this via CAN but also RS485...

It absolutely makes sense. Same batteries on shared bus should effectively have the same voltages/currents & SOC. This complexity comes from wanting to see more granular data such as individual alarms from each of BMS (since there are two) as to current/temperature etc. for pack under its...

Thanks, I did not want to miss something out before starting experimenting. Battery packs are of course of the same cells/voltages/capacity. I will then build a bridge system with 3x CAN transcievers: 2x downstream to pull data from batteries via 0x305 which the bridge will be managing. Data...

Hi, I am looking to connect two battery packs in parallel and would like to keep BMS communication with the inverter via CAN instead of just voltage/current. I saw that pylon is doing this via LV-HUB module where serial strings connect in parallel and their BMSes are connecting to this hub...

Hello All, I saw these questions popping up about exceeding inverter's PV watt rating but I have another variant of that question. The inverter at question has two MPPT inputs, SOFAR HYD3600-ES. AC output 3,6kW, PV max DC input 4000W but it says up to 2400W per MPPT? I don't get it since it...