Kipp&Zonen 2AP Sun Tracker - Manual (Page 42)

INSTALLATION AND SETUP
41
Figure 4.26: Shading Ball Rods Installation
4.5.5 Sun Sensor
The optional Sun Sensor accessory consists of a quadrant sensor fitted within a weather resistant
enclosure with 2AP mounting hard-ware and associated software. A 2AP with Sun Sensor can be
set to three different modes during operation:
1. Suntracking
mode:
Normal mode provides operation where the 2AP follows a calculated solar position and logs the
deviation to the measured position. Also the only 2AP suntracking mode if no Sun Sensor is
attached.
2. Active mode:
When the sun is present this mode provides operation where the 2AP follows a measured solar
position and logs the deviation to the calculated position.
3. Correcting Time:
When the sun is present this mode provides operation where the 2AP follows a measured solar
position and logs the deviation to the calculated position. This mode enables the 2AP to correct
for any possible clock drift of the controller board.