Kipp&Zonen 2AP Sun Tracker - Manual (Page 104)

SOLVING PROBLEMS
103
8.2 TROUBLE SHOOTING
Table 11:
Troubleshooting.
PROBLEM CORRECTIVE ACTION
Win2AP software fails to communicate with
the 2AP. Check to ensure that the 2AP is connected to the correct serial
port and that the correct baud rate is set.
2AP is not responding and will not move. Check AC power fuse, see chapter 3.
After initial sighting, 2AP gradually drifts off
target.
Check to ensure that the 2AP has been levelled accurately on its
mounting structure and that the time is set correctly to GMT.
Verify the location variables (longitude, latitude).
VMAX and AMAX values will not change with
CMD commands.
No action is required, the 2AP is suntracking (FU 4 through FU 7).
Motor reference position in log is significantly
different from initial setting. Check to ensure that there are no hardware or cabling
obstructions causing the motors to slip.
Repeated occurrence of "sun sensor window
may need cleaning" in log.
No action is required if the occurrences are during sunrise and
sunset as this is normal due to atmospheric refraction, see section
6.6.
2AP fails to Start Suntracking The 2AP fails to start Suntracking if the time difference between
the 2AP and host PC is more than 100 seconds.
The 2AP also fails to start Suntracking if the longitude, latitude
and pressure values are set to the default values (all zero).
Ensure the time and location values are set correctly, sections
4.6.1 and 4.6.2.
The 2AP does not work properly due to
corrupt configuration values in the 2AP Perform the 2AP Cold Start procedure and reconfigure the 2AP
with the backup configuration values stored on your PC (*.cfg file).
See section 4.8.