Environment and enclosure – Rockwell Automation 1757-FFLDC4 ControlNet Foundation Fieldbus Linking Device Installation Instructions User Manual
Page 3
ControlNet Foundation Fieldbus Linking Device 3
Publication
1757-IN022B-EN-P - August 2009
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
60664-1), at altitudes up to 2000 m (6562 ft) without derating.
This equipment is considered Group 1, Class A industrial equipment according
to IEC/CISPR 11. Without appropriate precautions, there may be difficulties
with electromagnetic compatibility in residential and other environments due
to conducted and radiated disturbances.
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 enclosure must have
suitable flame-retardant properties to prevent or minimize the spread of flame,
complying with a flame spread rating of 5VA, V2, V1, V0 (or equivalent) if
non-metallic. 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.
In addition to this publication, see:
•
Industrial Automation Wiring and Grounding Guidelines, for additional
installation requirements, Allen-Bradley publication
.
•
NEMA Standards 250 and IEC 60529, as applicable, for explanations of
the degrees of protection provided by different types of enclosure.
ATTENTION
To comply with the CE Low Voltage Directive (LVD), all connections to this
equipment must be powered from a source compliant with safety extra low
voltage (SELV) or protected extra low voltage (PELV).
To comply with UL restrictions, all connections to this equipment must be
powered from a source compliant with Class 2 or limited voltage/current.