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ControlLogix L7 Controller
Rockwell Automation Publication 1756-PC018C-EN-P - July 2016
Environment and Enclosure
North American Hazardous Location Approval
The following information applies when operating this equipment in hazardous locations:
Products marked “CL I, DIV 2, GP A, B, C, D” are suitable for use in Class I Division 2 Groups A, B, C, D, Hazardous
Locations and nonhazardous locations only. Each product is supplied with markings on the rating nameplate
indicating the hazardous location temperature code. When combining products within a system, the most
adverse temperature code (lowest “T” number) may be used to help determine the overall temperature code of
the system. Combinations of equipment in your system are subject to investigation by the local authority having
jurisdiction at the time of installation.
Informations sur l'utilisation de cet équipement en environnements dangereux:
Les produits marqués “CL I, DIV 2, GP A, B, C, D” ne conviennent qu'à une utilisation en environnements de
Classe I Division 2 Groupes A, B, C, D dangereux et non dangereux. Chaque produit est livré avec des marquages
sur sa plaque d'identification qui indiquent le code de température pour les environnements dangereux.
Lorsque plusieurs produits sont combinés dans un système, le code de température le plus défavorable (code de
température le plus faible) peut être utilisé pour déterminer le code de température global du système. Les
combinaisons d'équipements dans le système sont sujettes à inspection par les autorités locales qualifiées au
moment de l'installation.
European Hazardous Location Approval
The following applies to products marked
,
II 3 G:
• Such modules are Equipment Group II, Equipment Category 3, and comply with the Essential Health and
Safety Requirements relating to the design and construction of such equipment given in Annex II to
Directive 94/9/EC. See the EC Declaration of Conformity at
http://www.rockwellautomation.com/products/certification
for details.
• Such modules may have catalog numbers followed by a “K” to indicate a conformal coating option.
• The type of protection is “Ex nA IIC T4 Gc” according to EN 60079-15.
• Such modules are intended for use in areas in which explosive atmospheres caused by gases, vapors,
mists, or air are unlikely to occur, or are likely to occur only infrequently and for short periods. Such
locations correspond to Zone 2 classification according to ATEX directive 1999/92/EC.
• Such modules comply to Standards EN 60079-0:2012+A11:2013, EN 60079-15:2010, reference ATEX
certificate number DEMKO13ATEX1325026X.
IEC Hazardous Location Approval
The following applies to products with IECEx certification:
• Such modules are intended for use in areas in which explosive atmospheres caused by gases, vapors,
mists, or air are unlikely to occur, or are likely to occur only infrequently and for short periods. Such
locations correspond to Zone 2 classification to IEC 60079-0.
• The type of protection for the modules is “Ex nA IIC T4 Gc” according to IEC 60079-15.
• Such modules comply to Standards IEC 60079-0:2011, IEC 60079-15:2010, reference IECEx certificate
number IECExUL14.0008X.
• Such modules may have catalog numbers followed by a “K” to indicate a conformal coating option.
Insert the Controller into the Chassis
When installing a ControlLogix® controller, you can do the following:
• Place the controller in any slot.
• Use multiple controllers in the same chassis.
You can install or remove a ControlLogix controller while chassis power is on and the system is operating.
Removal and Insertion Under Power (RIUP)
ATTENTION:
• Before installing, configuring, operating, or maintaining this product, read this document and
the documents listed in the additional resources section for installing, configuring, or
operating equipment. Users must familiarize themselves with installation and wiring
instructions in addition to requirements of all applicable codes, laws, and standards.
• Installation, adjustments, putting into service, use, assembly, disassembly, and maintenance
shall be carried out by suitably trained personnel in accordance with applicable code of
practice. In case of malfunction or damage, no attempts at repair must be made. The module
must be returned to the manufacturer for repair. Do not dismantle the module.
• If this equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment can be impaired.
• This equipment is certified for use only within the surrounding air temperature range of
0…60 °C (32…140 °F) [1756-L71, 1756-L72, 1756-L73, 1756-L74, 1756-L75, 1756-L71K,
1756-L72K, 1756-L73K, 1756-L74K, 1756-L75K, 1756-ESMCAP, 1756-ESMNSE, and
1756-ESMNRM modules] or -25…+70 °C (-13…+158 °F) [1756-L73XT, 1756-ESMCAPXT,
1756-ESMNRMXT, and 1756-ESMNSEXT modules]. The equipment must not be used outside of
this range.
• Use only a soft dry anti-static cloth to wipe down equipment. Do not use any cleaning agents.
• The USB port is intended for temporary local programming purposes only and not intended for
permanent connection.
• The USB cable is not to exceed 3.0 m (9.84 ft) and must not contain hubs.
ATTENTION:
This equipment is intended for use in a Pollution Degree 2 industrial environment,
in overvoltage Category II applications (as defined in EN/IEC 60664-1), at altitudes up to 2000 m
(6562 ft) without derating.
This equipment is not intended for use in residential environments and may not provide
adequate protection to radio communication services in such environments.
This equipment is supplied as open-type equipment for indoor use. 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 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, publication
,
for additional
installation requirements.
• NEMA Standard 250 and EN/IEC 60529, as applicable, for explanations of the degrees of
protection provided by different types of enclosure.
WARNING:
EXPLOSION HAZARD
• Do not disconnect equipment unless power has been removed or the area is known to be
nonhazardous.
• Do not disconnect connections to this equipment unless power has been removed or the area is
known to be nonhazardous. Secure any external connections that mate to this equipment by
using screws, sliding latches, threaded connectors, or other means provided with this product.
• Substitution of components may impair suitability for Class I, Division 2.
• If this product contains batteries, they must be changed only in an area known to be
nonhazardous.
• Do not use the USB port in hazardous locations.
WARNING:
RISQUE D'EXPLOSION
• Couper le courant ou s'assurer que l'environnement est classé non dangereux avant de
débrancher l'équipement.
• Couper le courant ou s'assurer que l'environnement est classé non dangereux avant de
débrancher les connecteurs. Fixer tous les connecteurs externes reliés à cet équipement à l'aide
de vis, loquets coulissants, connecteurs filetés ou autres moyens fournis avec ce produit.
• La substitution de composants peut rendre cet équipement inadapté à une utilisation en
environnement de Classe I, Division 2.
• S'assurer que l'environnement est classé non dangereux avant de changer les piles.
WARNING:
Special Conditions for Safe Use:
• This equipment is not resistant to sunlight or other sources of UV radiation.
• This equipment shall be mounted in an ATEX/IECEx Zone 2-certified enclosure with a
minimum ingress protection rating of at least IP54 (as defined in EN/IEC 60529) and used in an
environment of not more than Pollution Degree 2 (as defined in EN/IEC 60664-1) when
applied in Zone 2 environments. The enclosure must be accessible only by the use of a tool.
• This equipment shall be used within its specified ratings defined by Rockwell Automation.
• Any external connections that mate to this equipment shall be secured by using screws,
sliding latches, threaded connectors, or other means provided with this product.
• Equipment shall not be disconnected unless power has been removed or the area is known to
be nonhazardous.
• Provision shall be made to prevent the rated voltage from being exceeded by transient
disturbances of more than 140 % of the rated voltage when applied in Zone 2 environments.
• This equipment must be used only with ATEX/IECEx certified Rockwell Automation
backplanes.
• The instructions in the user manual shall be observed.
• The USB port is intended for temporary local programming purposes only and not intended for
permanent connection. Do not use the USB port in hazardous locations.
WARNING:
When you connect or disconnect the battery, an electric arc can occur. This could cause
an explosion in hazardous location installations. Be sure that power is removed or the area is
nonhazardous before proceeding.
For safety information on the handling of lithium batteries, including handling and disposal of
leaking batteries, see Guidelines for Handling Lithium Batteries, publication
WARNING:
When you insert or remove the energy storage module while backplane power is on, an
electric arc can occur. This could cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding. Repeated electric
arcing causes excessive wear to contacts on both the module and its mating connector.
IMPORTANT
Any illustrations, charts, sample programs, and layout examples shown in this publication are
intended solely for the purposes of example. Since there are many variables and requirements
associated with any particular installation, Rockwell Automation does not assume responsibility or
liability for actual use based upon the examples shown in this publication.
WARNING:
When you insert or remove the module while backplane power is on, an electric arc can
occur. This could cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding. Repeated electric
arcing causes excessive wear to contacts on both the controller and its mating connector on the
chassis. Worn contacts can create electric resistance that can affect controller operation.