Rockwell Automation Publication 440R-UM013G-EN-P - December 2022 15
Chapter 2 Installation
Help Prevent Excessive
Heat
For most applications, normal convective cooling keeps the safety relay within the specified
operating range. Verify that the specified temperature range is maintained. Proper spacing of
components within an enclosure is sufficient for heat dissipation.
In some applications, other equipment inside or outside the enclosure can produce a
substantial amount of heat. In this case, place blower fans inside the enclosure to help with air
circulation and to reduce “hot spots” near the controller.
Additional provisions for cooling are necessary when high ambient temperatures are
encountered. Do not bring in unfiltered outside air. Place the controller in an enclosure to help
protect it from a corrosive atmosphere. Harmful contaminants or dirt could cause improper
operation or damage to components. In extreme cases, you must use air conditioning to help
protect against heat buildup within the enclosure.
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