Rockwell Automation 1785-l11B, -L20B, -L30B, -L40B, -L40L, -L60B, -L60L, -L80B Enhanced PLC-5 Programmable Controllers Installation Instructions - Manual (Page 4)

Publication 1785-IN062A-EN-P - May 2005
4 Enhanced PLC-5 Programmable Controllers
Environment and Enclosure
ATTENTION
• 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.
NOTE: 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.