Outdoor installation – Rockwell Automation 2711P-RDT12H High-bright Display Module User Manual
Page 4
4 High-bright Display Modules
Publication 2711P-IN026E-EN-P - September 2008
Outdoor Installation
When using the high-bright display module, catalog number 2711P-RDT12H,
outdoors, considerations in maximizing the field life of the front bezel and
display are:
•
selecting the proper enclosure.
•
orientation of the terminal.
Both ultraviolet and infrared radiation can reduce the field life of any electronic
device. While the materials used in the terminal bezels provide long field life, that
life can be improved by proper installation.
Ultraviolet (UV) radiation from the sun causes all plastics to fade or yellow and
become brittle over time. Using an antiglare overlay, catalog number 2711P-RGT12,
will protect the front of the terminal from direct exposure to UV radiation and
greatly increase its field life.
When installing the high-bright display module in an environment where the front
of the terminal will be in direct sunlight during the hottest part of the day and the
external ambient temperature can exceed 40 °C (104 °F), use the visor kit, catalog
number 2711P-RVT12. The visor reduces the solar load on the front of the display
and helps to maintain internal temperatures within specification.
The high-bright display module has a built-in temperature sensor that automatically
reduces the backlight intensity if the temperature inside the cabinet exceeds 55 °C
(131 °F). This reduces the risk of damage to the display.
The paint color, size, and power dissipated by the internal components of an
enclosure affect the temperature rise inside the cabinet. Hoffman, a Rockwell
Automation Encompass Partner, has information to assist you with enclosure
selection and heating/cooling accessories to meet the temperature requirements of
the installed equipment. See websi
.
Stirring fans or active cooling may be required in high altitude and high ambient
temperature locations to keep the internal enclosure temperature below
55 °C (131 °F). Use a heater in installations where the ambient temperature is below
0 °C (32 °F).
The backlight of the high-bright display generates a significant amount of heat
when set to full intensity. To minimize the amount of heat generated and extend
the life of the backlight, decrease the display intensity by using the screen saver
with a 5…10 minute delay.
Avoid placing the terminal on the south (north in the southern hemisphere) or west
side of the cabinet, if possible. This will reduce the heat rise due to solar loading
during the hottest part of the day.
Mount the terminal vertically to minimize solar loading on the display. Do not
mount the terminal in a sloped enclosure if it will be exposed to direct sunlight.