Rockwell Automation 1748 DataSite Configured Panel Installation Instructions - Manual (Page 49)

49 Publication 1748-IN001B-EN-P - May 2009
Appendix
B
Solar Panel
This appendix provides the following information:
• Mounting
• Sizing
Mounting Solar panel output is a function of the overall available power output from the
panel, angle of incidence of sun light on the panel, and ambient temperature of
the solar panel array. Solar panels are rated at their peak power output when
sunlight strikes the panel at a 90 degree angle. Any deviation of this will cause a
decrease in the amount of available energy output from the panel. As the
temperature of the solar array increases, the solar panel becomes less efficient
at converting sunlight energy into usable electrical energy.
In order to reduce the ambient temperature of the solar panels, necessary
mounting measures should be considered when mounting the panels. For
example, solar panels should be mounted in areas where radiated heat can be
eliminated or reduced. This ensures the solar panels remain at a low ambient
temperature while the greatest number of sunlight hours is still maintained. Do
not place the solar panels onto a paved surface or near a large source of heat
such as an exhaust fan.
Sizing Since the angle of sunlight as well as the number of sunlight hours will affect
the amount of charging energy for the DataSite configured panels, we suggest
sizing the solar panel array properly to ensure reliable operation of the system.
The average number of sunlight hours expected from a region will help to
determine the size of the solar panel needed.
This table shows the suggested sizes of the solar panels to be used based on
the average number of sunlight hours available.
Suggested Solar Panel Sizing
Average number of
sunlight hours Suggested Kyocera solar
panel size Kyocera solar panel
part number
> 5 hours 43 W KC40T
3.3…4.9 hours 65 W KC65T
2.5…3.2 hours 87 W KC85T
1.7…2.4 hours 130 W KC130TM
< 1.7 hours Not recommended —