ROGUE MPT-3024, Инструкция по установке и руководство пользователя

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with the limited resolution of analog-to-digital conversion and the dither used
by the MPPT algorithm to locate and track the maximum power point.
7. Remote Battery Temperature Sensor
The remote temperature sensor included with the MPT-3024 will automatically
alter absorb and float setpoints based on the temperature of the batteries
being charged. For each degree Celsius above 25 degrees, the setpoints will be
lowered approximately 5mV per 2 volt cell (30mV for a 12-volt battery, or
60mV for a 24-volt battery). For each degree Celsius below 25 degrees, the
setpoints will be raised approximately 5mV per 2 volt cell, up to a maximum
charging voltage of 16.0v or 32.0v, depending on system voltage. At 25
o
C,
there will be no change. The remote temperature sensor does not affect any
setpoints other than absorb and float. The temperature sensor will not function
accurately below -20
o
C (-4
o
F).
!
It is recommended not to charge, use, or store batteries at
temperatures less - or greater - than necessary. While a lower temperature
will increase the life of the battery, capacity is reduced and there is a risk
of the battery freezing at very low temperatures. A higher temperature
increases battery capacity, but will shorten its life. Batteries which regularly
operate at 49
o
C (120
o
F), for example, will incur an almost-80% reduction
in useful life versus a battery that operates at 25
o
C (77
o
F).
Since the LCD display is capable of 0.1 volt resolution, small changes made to
the absorb and float setpoints due to battery temperature might not be
reflected in the battery voltage as displayed on the LCD during absorb and float
modes. For instance, a two degree increase in battery temperature beyond
25
o
C will cause the absorb and float setpoints to be decreased by approxi-
mately 0.06 volts (60mV) for a 12-volt battery bank. This is less than the
resolution of the display, and so the battery voltage as read on the display at
the time of transition to float or absorb modes may not register the decrease.
The actual battery temperature will be displayed on the LCD when the remote
temperature sensor is plugged in. Below 0
o
C (32
o
F), the temperature reading
will cease to display actual temperature, and will instead read “< 0
o
C”.
The remote temperature sensor also monitors maximum battery temperature,