26 Rockwell Automation Publication 2711P-UM008I-EN-P - February 2022
Chapter 2
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 60664-1), at altitudes up to 2000 m (6561 ft) without derating.
The terminals are intended for use with programmable logic controllers. Terminals that are AC powered must be connected to
the secondary of an isolating transformer.
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 or radiated
disturbances.
Korean Radio Wave Suitability Registration - When so marked this equipment is registered for Electromagnetic
Conformity Registration as business equipment (A), not home equipment. Sellers or users are required to take
caution in this regard.
이 기기는 업무용 (A 급 ) 전자파적합기기로서 판 매자 또는 사용자는 이 점을 주의하시
기 바라 며 , 가정외의 지역에서 사용하는 것을 목적으 로 합니다 .
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. The terminals meet specified
NEMA, UL Type, and IEC ratings only when mounted in a panel or enclosure with the equivalent rating. 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, 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.
ATTENTION: Wiring and Safety Guidelines
Use publication NFPA 70E, Electrical Safety Requirements for Employee Workplaces, IEC 60364 Electrical Installations in
Buildings, or other applicable wiring safety requirements for the country of installation when wiring the devices. In addition to
the NFPA guidelines, here are some other guidelines to follow:
• Employ only qualified electricians to wire the device in accordance with local, state, and national codes.
• Connect the device and other similar electronic equipment to its own branch circuit.
• Protect the input power by a fuse or circuit breaker rated at no more than 15 A.
• Route incoming power to the device by a separate path from the communication lines.
• Cross power and communication lines at right angles if they must cross.
• Communication lines can be installed in the same conduit as low-level DC I/O lines (less than 10V).
• Shield and ground cables appropriately to avoid electromagnetic interference (EMI). Grounding minimizes noise from EMI
and is a safety measure in electrical installations.
For more information on grounding recommendations, see the National Electrical Code published by the National Fire Protection
Association.
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