Rockwell Automation Discrete Machine Performance Solution - Manual (Page 16)

D ISCRETE M ACHINE P ERFORMANCE S OLUTION U SER ’ S G UIDE
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use only) and IEC IP66 only when mounted in a panel or enclosure having an equivalent
rating.
Environmental considerations
Follow these guidelines to help ensure that the computer provides safe and reliable
service.
„ Ensure that sufficient space is available around air inlets and outlets to provide the
circulation necessary for cooling. Never allow air passages to become obstructed.
„ Allow enough room within the enclosure for adequate ventilation. The ambient
temperature around the computer must be between 0-50 °C (32-122 °F). Also
consider heat produced by other devices in the enclosure. You may need a user-
supplied fan, heat exchanger, or air conditioner to meet this condition in some
installations.
Environment and enclosure
This equipment is intended for use in a Pollution Degree 2 industrial environment, in overfatigue
Category II applications (as defined in IEC publication 60664-1), at altitudes up to 2000 meters
without darting.
This equipment is considered Group 1, Class A industrial equipment according to IEC/CISPR
Publication 11. Without appropriate precautions, there may be potential difficulties ensuring
electromagnetic compatibility in other environments due to conducted, as well as radiated,
disturbance. This equipment is supplied as “open type” equipment. It must be mounted within an
enclosure that is suitably designed for those specific environmental conditions that will be present
and appropriately designed to prevent personal injury resulting from accessibility to live parts.
The interior of the enclosure must be accessible only by the use of a tool. Subsequent sections of
this publication may contain additional information regarding specific enclosure type ratings that
are required to comply with certain product safety certifications. See NEMA Standards
publication 250 and IEC publication 60529, as applicable, for explanations of the degrees of
protection provided by different types of enclosure. Also, see the appropriate sections in this
publication, as well as the Allen-Bradley publication 1770-4.1 (
Industrial Automation Wiring and
Grounding Guidelines), for additional installation requirements pertaining to this equipment.
Remember that heat rises. The temperature at the top of an enclosure is often much higher than
the rest of the enclosure if air is not circulating.
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