J5 external temperature sensor

LibreSolar / mppt-2420-rc

Solar/Wind MPPT charge controller for DIN rail mounting

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J5 external temperature sensor #9

Closed BernhardEllmann closed 4 years ago

BernhardEllmann commented 4 years ago

what happens if J5 remains open?

If I want to use J5:

what sensor do i need to use?
what connector matches with J5? Please specify

martinjaeger commented 4 years ago

The firmware assumes 25°C if no external sensor is connected. And as Li-Ion charging voltages are not temperature-dependent, it's only relevant for lead-acid batteries.

You can use any wired 10k NTC with a connector from Phoenix Contact FMC 1,5 3,81 series (or similar one from other brands). A suitable Phoenix Contact part number is 1745894.

Thanks for the remark, I will add this to the schematic.

BernhardEllmann commented 4 years ago

ok, fine, thanks a lot!