Download Chapter 3 - Using the TeleFlow 2

Chapter 3 - Using the TeleFlow 2-Run Menus (TF2RUN)
Note: These values affect the "Threshold Voltage," i.e., the battery voltage level at
which the charge regulator becomes active (connects a load to dissipate excess
energy produced by the solar panel). An increase in the "Threshold Voltage" occurs
with a decrease in temperature, and vice-versa. The Threshold Voltage (VTHRESHOLD) is
calculated by the TeleFlow firmware according to the following equation:
VTHRESHOLD = V77 - (VTC . (TBOARD - 77)
where:
VTHRESHOLD is the temperature compensated threshold voltage.
V77 is the threshold voltage at 77E F (25E C) = 14.4V (12V Battery) or 7.2V (6V
Battery).
VTC is the temperature coefficient = 20mV (12V Battery) or 10mV (6V Battery).
The temperature coefficient is always negative (when temperature increases, the
threshold voltage descreases). The temperature coefficient is entered as a
positive value; so it is subtracted in the formula.
Tboard is the TeleFlow CPU board temperature in degrees F. 77 is subtracted from
this number to normalize the equation to 0 degrees F.
CHARGE REGULATOR SET-UP
WARNING!! The following parameters are related to the battery charge
regulation system. Modification of these parameters should
only be performed by personnel knowledgeable of the battery
system installed.
CHARGE REGULATOR
REGULATOR DELAY
NOMINAL BATTERY VOLTAGE
ENABLE
__30.0
12VOLT
CHARGE VOLTAGE
TEMPERATURE COEFFICIENT
__14.4 VOLTS
__20.0 MV/DEG
MINS
If the calculated threshold voltage is greater than the ceiling voltage, the ceiling
voltage is substituted. The ceiling voltage helps guard against overvoltage which
might occur at cold temperatures. Every second, the battery voltage is compared to
the threshold voltage. If the battery voltage exceeds the threshold voltage, the
TeleFlow™
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2-Run (TF2RUN) Load and Menus