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Hi can someone tell me what the bulk protection mode does on the MPPT and why it is active?
Over VRM or the console is nothing apparent but via grafana is the solarcharger/State = Bulk Protection. Now I wonder if something is wrong with the system or if I reach a limit somewhere and therefore lose solar energy.
Hi @MrYoshii
This is just a wild guess, but if you're running a Multi/Quattro and ESS it might be related to the tickbox 'Stop after excessive bulk' (in the Multi charger section).
hmm im not sure it says "Stop after excessive bulk" but for me it was chargeing with 2500W. In the manuel it says: If the absorption voltage has not been reached after 10 hours, the battery may be faulty and the charger will switch off for safety reasons. So i think its not that but thanks for the input
I would also like to know what Bulk protection means.
I am still trying to program a relay to switch a load on when battery enters absorption so I want to "drive a relay based on CHARGE STATE" (NOT state of charge!) so this could be useful to me.
In Ve.configure there is an option to drive a relay on charge state in the relay assistant but there isn't any simple "bulk, absorption, float" triggers available in there, only "Bulk protection activated" and "general system failure". So I need to know what Bulk protection is to see if it would be useable.
