Analog Input for battery faults? (Dev request?)

[edstratford]

I have EarthX batteries for both my main and backup batteries. Both offer a fault indicator signal (which can also be connected to a simple bulb). I would like to use Analog Inputs for these fault indicators, preferably for warnings titled 'Main Battery Fault' and 'Backup Battery Fault' that would behave like "No GPS Position' or the like. Is this possible?

I believe the provided signal goes to ground to indicate fault.

Thanks in advance.

[GRT_Jeff]

We don't have built-in warnings set up for that but you can configure a custom input for now.

You can connect the "To EFIS Input" wire directly to an analog input on the EFIS. You can use the internal pull-up in the EFIS models that have one if you don't wire in the external one in the diagram.

We don't have a specific warning input function for a discrete like this, so you have to configure it as an aux voltage.

Example for Analog Input 1
SET MENU, General Setup
Analog 1 Function: Aux (EIS compatible)
Analog 1 Internal Pull-Up: If wired with a pull-up like in the diagram, set to Off. If no external pull-up is used, set to On to use the internal one.
Analog 1 Scale Factor: 25
Analog 1 Offset: 0
Analog 1 Sensing: Forward
Analog 1 Integer/Decimal: Decimal
Analog 1 Aux Function: Aux
Analog 1 Aux Name: ETX Flt

This will convert the fault input to a voltage reading with one decimal place. It will read around the pull-up voltage when there's no fault. It will read around zero in Fault State 1, and it will cycle between these voltages in Fault State 2.

To get an alarm on the EFIS, you can set the minimum limit in SET MENU, Engine Limits
Min Analog 1 (ETX Flt): 2.5

If you're going to display it on a bar graph, you can set the min and max for the graph in SET MENU, Graphical Engine Display:
ETX Flt Graph Min Level: 0.0
ETX Flt Graph Max Level: 12.0

The bar graph will normally be green and mostly filled if there's no fault.

[edstratford]

Thanks! This worked great!