AZ-225 Install Manual
AZ-225 Install Manual
AZ-225 Install Manual
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Section<br />
7<br />
Power Connection to the Tracker Controller<br />
7.1) MAKING A DECISION ABOUT POWERING THE WATTSUN CONTROLLER<br />
NOTE: The azimuth-tracking limit switches are preset at the factory to accommodate the maximum<br />
range of East-West azimuth tracking.<br />
OPTION 1: Array Technologies recommends that you power your Wattsun Tracker Controller from a battery<br />
bank or grid-tied power source. The tracker will return to the East at sunset and the tracker has 270 degrees<br />
of azimuth tracking available. The dip-switch, sensor override features built into the controller are always<br />
available when you have constant power.<br />
OPTION 2: (Discouraged with the <strong>AZ</strong>-SeriesTrackers!) If you power the controller from the array, the<br />
tracker returns East in the morning. The tracker is limited to only 180 degrees of azimuth tracking arc. You<br />
will have to reset the Azimuth Motor limit switch cams to reduce the East-West travel. The dip-switch,<br />
sensor override features built into the controller will only be available during the day.<br />
The diagram shows the hourly sun position for 40 Degrees North Latitude. During the winter, a tracker that<br />
is powered from an array returns in the morning and captures nearly all the 117-degree azimuth-tracking arc.<br />
However, during the summer, 242-degree azimuth-tracking arc is available. A tracker that is powered from<br />
an array only captures a 180-degree portion of that arc, and proportionally less power too - even if the<br />
tracker limits are set to their extremes.<br />
7.2) On most Azimuth Trackers, the controller is already mounted to the drive head at the factory. The remote<br />
sensor and azimuth motor connections are already pre-wired and tested.<br />
Your installer should provide the appropriate fusing or DC breaker to protect any long wire runs and<br />
to disconnect to the controller power input.<br />
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