Rockwell Automation Publication 1756-UM001M-EN-P - February 2012 17
Chapter 1
Install the 1756-L7x Controller
Environment and Enclosure
Topic Page
Before You Begin 20
1756-L7x Controller Parts 20
1756-L7x Controller Installation 21
Insert the Controller into the Chassis 21
Insert the Key 22
Install the SD Card 24
Remove the SD Card 23
Uninstall the ESM 25
Install the ESM 28
Additional Resources 30
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 or be approved for the application if nonmetallic. 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, Rockwell Automation publication 1770-4.1
, for additional
installation requirements
• NEMA Standard 250 and IEC 60529, as applicable, for explanations of the degrees of protection provided by enclosure
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