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the bulk set point you have entered, automatically calculates this depleted value set point to protect (as
much as possible) the battery from an over-discharge.
Please note: A lead-acid battery’s life is greatly reduced when the level of discharge is quite deep or the
battery is allowed to enter into a “dead battery” state. You should familiarize yourself with the parameters
for your particular battery before setting these advanced parameters.
4. The View Submenu: The view menu allows you to view the real time voltage and amperage of the connected
solar and or turbine energy sources. The controller incorporates two shunts, allowing it to measure both solar
and turbine amperages simultaneously. This feature is new to the HVAD, whereas previous controllers were
only able to display the amperage for a single input.
Note: If you do not utilize both wind and turbine inputs, it is possible (perhaps likely), that there will be a
small amount of current that is displayed for the unused input. For instance, if you are using only the solar
input, the controller may sense a few tenths of an amp on the turbine input. This is normal as there are stray
currents in any system where large amperages are involved.
Please note these very important electrical concepts: When the solenoid is not enabled, the solar panels are
effectively wired directly to the batteries through the normally closed contacts of the solenoid, just as if you
had hooked the positive of the solar panel directly to the positive of the battery bank. This means that the solar
voltage and the battery voltage will be identical at that time. The solar panels will move the voltage of the
batteries up and the batteries will have moved the solar panel voltage down until they reach an equilibrium
based on ohms law. This means, the controller cannot report the VOC (voltage open circuit) of the solar panel
input when it is connected to the batteries. The solar VOC reading will only be accurate when the solenoid is
enabled! Hint: Run the test cycle to watch how the enable/disable of the solenoid affects the solar voltage.
This same concept applies to the turbine input; however, the turbine input is never disconnected from the
batteries, therefore the turbine voltage is always identical to the battery voltage and therefore it is not reported
separately by the controller.
Another concept to understand is that the solar voltage will always be the same as the battery (and turbine)
voltage when you do not have an active solar input. This seems impossible, yet due to the same fact that the
solar input is tied to the battery positive via the normally closed contacts of the solenoid, the controller will
“see” the battery voltage on the solar input, with no way to determine if it is battery voltage or solar voltage.
When the solenoid is enabled, the solar voltage will be “floating” (it is not connected to anything) without an
active input and may not be considered accurate at that time, as there can be stray inductances present.
Essentially, if you do not have any solar hooked up, then just ignore any voltage readings the controller may
display for the solar input.
The current reading (amperage) of the solar and turbine inputs will be zero (or very close to zero), if there is no
active input for that source. When the solenoid is enabled, the solar current will drop to zero. When the
solenoid is not enabled, the solar input will be at its maximum. Both turbine and solar amperage readings
should always be accurate within a few percent, regardless of the active inputs (solar only, turbine only, or
both active). Voltages can be misleading due to the concepts discussed above, so using amperages is the key
to determining the performance of the inputs.
Other Menus and Submenus:
In addition to changing the charging parameters, the menu system can be used to view the maximum voltages and
amperages reached during the active charge cycle. These values are reset each time the charge mode is changed (a
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