ROGUE MPT-3024, Installation Manual And Owner'S Manual, Page: 40 / 52

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charge in the batteries and will cause a greater accumulation in the watt-hour
and amp-hour meters. A more accurate comparison between log entries may
therefore be made by taking the amount of time spent in the absorb and float
modes into consideration. Less time spent in these modes means that more
time has been spent in the MPPT mode, which will generally result in a greater
accumulation of watt-hours and amp-hours for a given amount of solar
insolation.
The data log may be accessed from the main status display at any time by
pressing the “DATA” key. It may also be accessed once the MPT-3024 has
entered sleep mode by pressing any key.
“Wh” is the accumulated PV watt-hours for that day. If the value is greater than
999, the number will appear as kilowatt-hours (kWh).
“Ah” is the accumulated Amp-hours as output to the batteries for that day.
“Pk-W” represents the peak input power (in watts) recorded for that day. This
is the highest power that was measured during operation for the period
represented by each entry.
“FULL” will be followed by either a “Y” or an “N” — indicating whether or not
the batteries were fully charged for that day.
The third row of data tallies the amount of time that the controller spent in the
absorb and float modes for that day, rounded to the nearest five minutes. Up to
16 hours maybe be logged in both timers. In the unlikely event that the 16 hour
limit is exceeded, the timer will roll over to zero and will begin counting again.
The format for these timers is HH:MM, where H is hours and M is minutes.
Log entries may be scrolled through by using the “UP” and “DN” keys. All log
data may be erased by pressing the “ERASE” key. Any request for erase will be
confirmed before the erase command is executed.
15. Battery Equalization
As a string of batteries ages, one or more cells may become stronger and
attempt to draw more than their share of charging current. In order to force the
weaker cells into competition with the stronger cells, the entire string of
batteries may be subject to an overcharge. This will also help to eliminate