Setting The Az Motor Limits - Wattsun AZ-225 Installation Manual

Section

Setting the AZ Motor Limits

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KEEP YOUR FINGERS AND TOOLS AWAY FROM THE GEARING BENEATH THE PROTECTIVE COVER OF
THE DRIVE!
The limits for your tracker are preset at the factory. Please contact Array Technologies if you want to change your
settings.
However, for clarification please review the images below. There are two cams: one stacked atop the other. The
bottom cam controls the East limit and the top cam controls the West limit. As the tracker motor operates and
moves the tracker, the cams rotate too. Eventually, a "nub" on the cam contacts a limit switch and stops the
tracker. The tracker is free to rotate in the opposite direction if the sensor tells it to or if you are in the manual
control mode.
The East cam is preset to the maximum East (wide open) position at the factory and acts as a reference for the
West cam. The cams are held and meshed together with a retaining spring. Rotate the West cam (top cam)
clockwise decrease the westward travel of the array. Make your adjustments in small increments. And always
Test the range of motion after making any adjustment!
Do not exceed 135 degrees of rotation West of South or the Worm Gear Assembly will hit a welded safety stop. If
you hit the stop the tracker motors will draw too much current and a self-resetting fuse in the controller will shut off
the power to the azimuth motor. Turn the tracker controller off using Dip Switch #1, let the fuse cool for 3 minutes,
adjust the West cam to reduce the west travel and flip Dip Switch #1 back to the normal operating position.
Repeat this process if necessary.
Always test the tracker range of motion after adjusting the cams! Then test it again!
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