16 Rockwell Automation Publication 1769-UM011H-EN-P - April 2012
Chapter 2 Install the 1769-L3x Controllers
WARNING: 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 the following:
• Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley® publication 1770-4.1
, for additional installation
requirements
• NEMA 250 and IEC 60529, as applicable, for explanations of the degrees of protection provided by different types of
enclosure
WARNING: This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal
operation. Follow these guidelines when you handle this equipment:
• Touch a grounded object to discharge potential static.
• Wear an approved grounding wriststrap.
• Do not touch connectors or pins on component boards.
• Do not touch circuit components inside the equipment.
• Use a static-safe workstation, if available.
• Store the equipment in appropriate static-safe packaging when not in use.
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