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5
WARNING! PLEASE READ THIS GUIDE COMPLETELY BEFORE CONNECTING POWER TO THE
CONTROLLER. YOU CAN DAMAGE THE CONTROLLER OR INADVERTANTLY POWER UP THE TRACKER
AND CREATE A HAZARDOUS SITUATION. NEVER APPLY POWER TO THE CONTROLLER OUTPUT
WIRES! THE CONTROLLER WILL BE DAMAGED AND THE REPAIR CHARGE IS NOT COVERED UNDER
WARRANTY.
Array Technologies does not encourage the use of Dual-Axis Trackers in "low latitudes." Wattsun Single-
Axis Trackers are preferred in the tropics. Contact Array Technologies for performance data and
recommendations.
The azimuth tracker works by rotating the PV array about the pipe mast then tilting the array to the proper
elevation angle. Therefore, for installations near the equator it will be necessary to rotate the azimuth tracker 180
degrees twice a year. Depending upon the time of year, trackers in this region will find the sun anywhere from
north, south, or directly overhead of its location, making manual rotation necessary.
For example, at the equator rotation of the tracker will need to occur on the first day of spring and the first day of
fall. The array should point north on March 21st, and rotated 180 degrees to point south on September 23rd.
To rotate the tracker on the pipe mast, loosen the four set bolts on the azimuth drive, rotate the tracker and re-
tighten. Marking the pipe mast for the two yearly positions, aids in seasonal adjustment. You must also leave
sufficient output wire lengths from the array to allow for rotation.
24 VOLT TRACKER CONTROLLER SPECIFICATIONS
Controller input power specifications:
The input voltage range is 23 to 50 volts DC.
Use a Wattsun Voltage adapter to power the controller for nominal voltages other than 24 VDC.
Tracker controller wiring and drive motor wiring:
Do not connect the motor output wire harness to a power source! Connecting any of the controller output
wires to the PV array or a power source will cause permanent damage to the controller and void the
.
warranty
Power supply connection options:
The input power leads are Red (positive) and Black (negative) wires in the two-wire cable mounted on the
left-hand side of the controller chassis. The input wires are clearly marked with a tag.
Power consumption, including motors:
Less than 10 watt-hours per day.
Installing the Wattsun Solar Tracker Controller
For Installations in the Tropics:
(20 degrees North latitude to 20 degrees South latitude)
18
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