Hi All,
Big shout out to REC and Tine for building this as a custom — it started as a specific request but I think it has broader relevance, which is why I'm sharing it here.
MODE 3 is a custom mode included in REC firmware 3.01. Prior to critical error induced BMS shutdown, the relay fires one and only one 400ms DC pulse which can be used to seamlessly connect an emergency battery via an ML-RBS 7700, keeping the system alive through what would otherwise be a hard cutoff. The pulse mimics the remote switch of the ML-RBS 7700 and activates the emergency battery automatically an instant before the LFP cuts out.
Cerbo GX users can also implement a Node-RED flow that manages the software transition to an emergency battery and associated settings — notably DVCC status and VE.Bus reset where necessary.
For anyone running critical installs, uninterrupted power is about safety and is a non-negotiable requirement for a vessel underway offshore or at night.
If interested in details feel free to contact me directly.
