Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers - Manual (Page 37)

1 Publication 1785-UM012D-EN-P - July 2005
Chapter
3
Placing System Hardware
Using This Chapter
Determining the Proper
Environment Place the controller in an environment with conditions that fall within these
guidelines:
Separate your programmable controller system from other equipment and
plant walls to allow for convection cooling. Convection cooling draws a
vertical column of air upward over the controller. This cooling air must not
exceed 60° C (140° F) at any point immediately below the controller. If the air
temperature exceeds 60° C, install fans that bring in filtered air or recirculate
internal air inside the enclosure, or install air-conditioning/heat-exchanger
units.
To allow for proper convection cooling in enclosures containing a
controller-resident chassis and remote I/O chassis, follow these guidelines.
For Information About Go to Page
Determining the proper environment 3-1
Protecting your controller 3-3
Avoiding electrostatic damage 3-3
Laying out your cable raceway 3-4
Laying out your backpanel spacing 3-5
Grounding your system 3-6
Environmental Condition Acceptable Range
Operating temperature 0 to 60° C (32 to 140° F)
Storage temperature -40 to 85° C (-40 to 185° F)
Relative humidity 5 to 95% (without condensation)