Rockwell Automation 1794-ASB/E Remote I/O Adapter Module User Manual - Manual (Page 3)

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ATTENTION
!
Environment and Enclosure
This equipment is intended for use in a Pollution
Degree 2 industrial environment, in overvoltage
Category II applications (as defined in IEC publication
60664–1), at altitudes up to 2000 meters without
derating.
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
enclosures. 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.
ATTENTION
!
FLEX I/O is grounded through the DIN rail to chassis
ground. Use zinc plated, yellow chromated steel DIN
rail to assure proper grounding. Using other DIN rail
material (e.g. aluminum, plastic, etc.) which can
corrode, oxidize or are poor conductors can result in
improper or intermittent platform grounding.