Rockwell Automation 1734-EP24DC User Manual

Installation Instructions

POINT I/O 24V dc Expansion Power Supply

Catalog Number 1734-EP24DC, Series B

Inside . . .

For See Page

Important User Information 2
Preventing Electrostatic Discharge 3
Environment and Enclosure 4
North American Hazardous Location Approval 5
European Hazardous Location Approval 6
About the Power Supply 8
Install the Power Supply 9
Remove the Power Supply 10
Replace the Power Supply 10
Wire the Power Supply 11
Specifications 16

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Important User Information

Solid state equipment has operational characteristics differing from those of electromechanical
equipment. Safety Guidelines for the Application, Insta llat ion and Main te nanc e of So lid Stat e Contr ols
(Publication SGI-1.1 available from your local Rockwell Automation sales office or online at
http://www.literature.rockwellautomation.com) describes some important differences between solid
state equipment and hard-wired electromechanical devices. Because of this difference, and also
because of the wide variety of uses for solid state equipment, all persons responsible for applying this
equipment must satisfy themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liab le for indir ect or consequen tial damage s
resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the
many variables and requirements associated with any particular installation, Rockwell Automation, Inc.
cannot assume responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits,
equipment, or software described in this manual.
Reproduction of the contents of th is manual, in whole or in part, without writ t en p e r mission of Rockwell
Automation, Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.

WARNING

Identifies information about practic es or circu mstances th at can cause an explosion in
a hazardous environment, which may lead to personal injury or death, property
damage, or economic loss.

IMPORTANT

ATTENTION

HOCK HAZARD

BURN HAZARD

Publication

Identifies information that is critical for successful application and understanding of
the product.

Identifies information about practices or circumstances that can lead to personal
injury or death, property damage, or economic loss. Attentions help you identify a
hazard, avoid a hazard and recognize the consequences.

Labels may be located on or insi de the equipm ent (e .g., dr ive or moto r) to ale rt p eople
that dangerous voltage may be present.

Labels may be located on or insi de the equipm ent (e .g., dr ive or moto r) to ale rt p eople
that surfaces may be dangerous temperatures.

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Preventing Electrostatic Discharge

ATTENTIO

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.

• If available, use a static-safe workstation.

• When not in use, store the equipment in appropriate

static-safe packaging.

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Environment and Enclosure

ATTENTIO

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 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 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.
See NEMA Standards publication 250 and IEC publication
60529, as applicable, for explanations of the degrees of
protection provided by different types of enclosure. Also,
see the appropriate sections in this publication, as well as
the Allen-Bradley publication 1770-4.1 (“Industrial
Automation Wiring and Grounding Guidelines”), for
additional installation requirements pertaining to this
equipment.

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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.

EXPLOSION HAZARD -

WARNING

• 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 only be changed in an
area known to be nonhazardous.

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.

AVERTISSEMENT

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 1, Division 2.

• S’assurer que l’environnement est
classé non dangereux avant de
changer les piles.

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European Hazardous Location Approval

European Zone 2 Certification (The following applies when the product bears the
EEx marking.)

This equipment is intended for use in potentially explosive atmospheres as defined by
European Union Directive 94/9/EC.
DEMKO certifies that this equipment has been found to comply with the Essential Health
and Safety Requirements relating to the design and construction of Category 3 equipment
intended for use in potentially explosive atmospheres, given in Annex II to this Directive.
The examination and test results are recorded in confidential report No 03NK30347.
Compliance with the Essential Health and Safety Requirements has been assured by
compliance with EN 50021.

IMPORTANT

Publication

Observe the following additional Zone 2 certification
requirements.

• This equipment is not resistant to sunlight or
other sources of UV radiation.

• The secondary of a current transformer shall not
be open-circuited when applied in Class I, Zone
2 environments.

• Equipment of lesser Enclosure Type Rating must
be installed in an enclosure providing at least
IP54 protection when applied in Class I, Zone 2
environments.

• This equipment shall be used within its specified
ratings defined by Allen-Bradley.

• Provision shall be made to prevent the rated
voltage from being exceeded by transient
disturbances of more than 40% when applied in
Class I, Zone 2 environments.

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