Today I was setting up a new Smartsolar 150/60 and I'm going to use the relay to control a Low Voltage Disconnect circuit. I've setup MPPT relay accordingly and tried to test it by setting the low voltage threshold higher than the Vbatt the MPPT was seeing, but I still could't make the relay change state. Some details:
- MPPT is new, this test was on bench, powered by a DC 48V supply
- No PV attached
- Tried the same configuration on a live system with 150/70 MPPT (with real Battery and PV) and I could make the relay change, as expected.
What am I forgetting with this new MPPT? Both MPPTs had same firmware, 1.59