16 Rockwell Automation Publication 2080-UM002G-EN-E - March 2015
Chapter 2 About Your Controller
Environment and Enclosure
Preventing Electrostatic Discharge
ATTENTION: To comply with the CE Low Voltage Directive (LVD), this equipment must be powered from a
source compliant with the following: Safety Extra Low Voltage (SELV) or Protected Extra Low Voltage (PELV).
ATTENTION: To comply with UL restrictions, this equipment must be powered from a Class 2 source.
ATTENTION: Be careful when stripping wires. Wire fragments that fall into the controller could cause
damage. Once wiring is complete, make sure the controller is free of all metal fragments.
ATTENTION: Do not remove the protective debris strips until after the controller and all other equipment in
the panel near the module are mounted and wired. Remove strips before operating the controller. Failure to
remove strips before operating can cause overheating.
ATTENTION: Electrostatic discharge can damage semiconductor devices inside the module. Do not touch
the connector pins or other sensitive areas.
ATTENTION: The USB and serial cables are not to exceed 3.0 m (9.84 ft).
ATTENTION: Do not wire more than 2 conductors on any single terminal.
ATTENTION: Do not remove the Removable Terminal Block (RTB) until power is removed.
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, 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 different types of enclosure.
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