Unfortunately, there is no official documentation for the PI-800 Programming parameters.
The various parameters listed in the PI-800 interface will vary according to the controller that is actually connected, therefore many of the voltage parameter settings shown in your attached screenshot are not available with the MP Edge controller.
The default values for the three voltage related parameter settings available for the MP Edge are shown below:
With a 48V battery, the
Overvoltage protection value (V) will only accept values from 61V to 65V, and the
Undervoltage protection value (V) will only accept values from 34V to 48V.
Alan