Environment and enclosure – Rockwell Automation 1790D-XXXX DeviceNet Digital Base Terminal Block CompactBlock LDX I/O Series B User Manual
Page 4
 
4 DeviceNet Digital Base Terminal Block CompactBlock LDX I/O
Publication
1790-IN012B-EN-P - July 2008
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 (6562 ft) 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 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 
70-4.1
.
•
NEMA Standards publication 250 and IEC publication 60529, as 
applicable, for explanations of the degrees of protection provided by 
different types of enclosure.