Installation Guide

3-34 975-0691-01-01 Revision B
5. Find the .csv file for the current day and open the file in your preferred
spreadsheet software. The data file is formatted by using a comma to delimit
items. The file can be opened and viewed by most popular spreadsheet
programs such as Microsoft® Excel® or a text editor (i.e. Notepad).
Mid-point Sensing
Mid-Point voltage sensing is a technique used to detect unbalanced battery
strings. The Battery Monitor is capable of sensing three voltage inputs - the main
battery string voltage and two additional voltages on the same battery string.
These two additional voltage measurement inputs can be used to keep track of
voltages across the cells in a string to determine various attributes of battery
health. By having more precise measurements, it is possible to detect issues
such as cell divergence or a dead cell. The voltage inputs are sensed every 5
seconds and updated for monitoring purposes, and they are stored in the log
files at a resolution of every 300 seconds.
Mid-point Sensing Configurations
To use the mid-point sensing feature, wire the battery bank using one of the 2
methods illustrated below, depending on the size of the battery bank. In both
examples, the Va1 and Va2 terminals are connected to the mid-point positive
terminals of the battery cells. Voltages are then measured with reference to the
negative terminal of the battery bank.
Figure 3-5 Example log file (CSV format)