MidNite Classic - Regulatory Approval and Pinouts; Regulatory Approval Details; RS232 Jack Pin Out

Classic Manual Rev L
34 | P a g e 1 0 - 0 0 1 - 1 R E V L
You will need to select a wind curve from the list of pre-loaded curves or build your own.
Selecting Pre-loaded Wind Curve
To access the list of wind curves, follow these steps:
 Depress the MAIN MENU key.
 Scroll left or right until MODE is highlighted and depress ENTER.
 Set the status to OFF.
 Depress RIGHT ARROW key, highlight mode under the header FUNCTION. Use UP/DOWN
ARROW keys till it reads WIND TRACK.
 Depress the RIGHT SOFT key to select GRAPH.
 Using the LEFT SOFT key, select MEM.
 Scroll up/down through the menu and select the curve that was designed for your
turbine.
 Once you find the correct power curve, use the RIGHT SOFT key to select RECALL.
 Depress ENTER to save this power curve to the Classic’s memory.
Building Custom Wind Curve
The Classic uses a 16-step wind curve for holding the turbine output at the Maximum Power
Point for increased efficiency and turbine RPM control. The curve is specific to the turbine
output characteristics. Each step consists of two variables: 1) the input voltage from the
turbine; and, 2) the current output to the battery. The output current is the variable the
Classic watches; the input voltage is the variable the Classic adjusts. As the current on the
output side of the controller changes, the input voltage is adjusted to match the curve you
programmed.
Step 1 is always the wake-up voltage of the Classic at 0A. Step 2 is the cut-in voltage of the
turbine and the expected current at cut-in. Step 16 is the maximum input voltage (less than
150V for the Classic 150; less than 200V for the Classic 200, and less than 250V for the
Classic 250) and maximum current output. The steps in between connect the dots, so to
speak. Keep in mind that the minimum voltage of Step 1 must be above the wake-up voltage
of the Classic, which is 33% higher than the battery voltage. It is recommended to start with
an initial curve and then fine tune it over time. Keep in mind that increasing voltage and/ or
decreasing current on the first few steps can help increase turbine RPM to improve low wind
speed output. Decreasing voltage on the last step or two can decrease turbine RPM.
To build a custom wind curve, it is easiest to load a pre-built curve, then modify as follows:
 Follow steps above to load a pre-built wind curve (Do not save yet).
 Notice in upper right corner of MNGP, it reads X=, Y=, and Step XX. Below Step XX is AMPS
or VOLTS.
 Curve should load at Step 01. If not, use LEFT/RIGHT ARROW keys to reach Step 01.
 Since Step 01 will always be at 0A, depress the RIGHT SOFT key to change to VOLTS.
 Use UP/DOWN ARROW keys to change Step 01 volts.
 Depress RIGHT ARROW key to Step 02.
 If VOLTS is present in lower right corner of MNGP, set volts for Step 02. Depress RIGHT
SOFT key for AMPS. Set amps for Step 02.
 Continue through all 16 steps.