Install - Cable mount current sensor for the HD
Installations and wiring instructions for the 900 A, bidirectional, cable mounted current sensor
The HD current sensor is a HASS 300-S from LEM. The Elithion part number is 2CS0900KA.
It is powered by 5 V only (unlike the current sensors for the Pro, which take +/- 15 V).
It has a range of +/- 900 A. (the "300" in the part number refers to its range with the best performance.)
Its output has an offset of 2.5 V at 0 current, and swings up above 2.5 V when the battery is charging, and below 2.5 V wgen discharging.
The current sensor is already installed in the 40-way HD harness available from Elithion.
Otherwise, it may installed in the field.
The biggest wire that fits in the opening in the cable mounted current sensor can carry far more current than the sensor can detect. So, if your cable doesn't fit, the wire is oversized for the application (e.g.: you're using a wire for 2000 A average when it only carries 100 A average).
Regardless, if the cable is too large for the opening on the sensor, you may:
Bar-mounted current sensor
In the GUI, in the Configure tab / Meausure tab / Current sensor box, Load Sensor box, click the "HD" preset box, which will set the gain at 240 A / V and the offset midway at 4095.
(The current sensor itself has a gain of 480 A / V; however, there is a mismatch between the Lithiumate software and the HD hardware that results in an extra factor of 2, hence, the value entered is 240 A / V.)
You can tweak the gain to match actual readings, and the offset to calibrate the reading at 0 current.
Remember to click the "Write to BMS" button to save the settings.