Rockwell Automation 1715-OF8I Redundant I/O System User Manual - Manual (Page 53)

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 53
Installation Instructions Chapter 2
Power Requirements
A 24V DC power supplied is required. See Install the Power Supply on page 63
for complete details.
Cooling Requirements
The 1715-AENTR adapter module is designed to operate in its specified
environment without forced air cooling. Forced air cooling can be needed in
individual circumstances, such as when the system shares its enclosure with other
heat producing equipment.
Adequate ventilation must be provided for the system and the ambient
temperature in the enclosure must not be higher than the maximum operating
value of 60 °C (140 °F).
The adapter module dissipates all of the power it uses as heat. This is the power
supplied to the terminals on the 1715-A2A adapter base unit. The I/O modules
dissipate some of the power they take from the field power source as heat. The
actual amount of heat depends on the number of channels in use.
The 1715-AENTR adapter module is open-type equipment that is rated IP20.
This provides protection against solid objects over 12 mm (0.47 in.), but does not
provide protection against liquids.
Heating Requirements
If enclosure is in colder environments, temperatures must be kept at
-20 °C (-4 °F) or above.
ATTENTION: To comply with the CE Low Voltage Directive (LVD), all connections
to this equipment must be powered from a source compliant with the
following:
– S afety Extra Low Voltage (SELV) or Protected Extra Low Voltage (PELV)
IMPORTANT Cooling by Convection: For correct cooling of the equipment, fit the base units
in the vertical plane and orientate so the modules are upright, with their
ventilation slots at the top and bottom.