Rockwell Automation 1794-TB3GT Flex I/O Terminal Base Units Installation Instructions - Manual

Publication 1794-IN133A-EN-P - May 2012
Installation Instructions
FLEX I/O Grounded Cage Clamp
Temperature Terminal Base Unit
Catalog Number 1794-TB3GT
European Hazardous Location Approval
The following adapters are European Zone 2 approved: 1794-TB3GT
Important User Information
Solid state equipment has operational characteristics differing from those of
electromechanical equipment. Safety Guidelines for the Application, Installation
and Maintenance of Solid State Controls (Publication
SGI-1.1 available from your
local Rockwell Automation sales office or online
athttp://www.rockwellautomation.com/literature/
) 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 liable for indirect or
consequential damages 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 this manual, in whole or in part, without written
permission of Rockwell Automation, Inc. is prohibited.
Throughout this manual we use notes to make you aware of safety
considerations.
WARNING
Identifies information about practices or circumstances that can
cause an explosion in a hazardous environment, which may lead
to personal injury or death, property damage, or economic loss.
IMPORTANT
Identifies information that is critical for successful application and
understanding of the product.
ATTENTION
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, or
recognize the consequence.
ATTENTION
Prevent Electrostatic Discharge
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.
•
Use a static-safe workstation, if available.
•
Store the equipment in appropriate static-safe packaging when
not in use.
ATTENTION
FLEX I/O systems are grounded through the DIN rail to chassis
ground. Use zinc plated yellow-chromate steel DIN rail to assure
proper grounding. The use of other DIN rail materials (for example,
aluminum or plastic) that can corrode, oxidize, or are poor conductors,
can result in improper or intermittent grounding. Secure DIN rail to
mounting surface approximately every 200 mm (7.8 in.) and use
end-anchors appropriately.
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 (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:
• Industrial Automation Wiring and Grounding Guidelines,
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
enclosures.
ATTENTION
Personnel responsible for the application of safety-related
programmable electronic systems (PES) shall be aware of the safety
requirements in the application of the system and shall be trained in
using the system.
ATTENTION
Do not remove or replace a Terminal Base unit while power is
applied. Interruption of the backplane can result in unintentional
operation or machine motion.
ATTENTION
If this equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.
European Zone 2 Certification (The following applies when the
product bears the Ex Marking)
This equipment is intended for use in potentially explosive atmospheres as defined
by European Union Directive 94/9/EC and 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 Zone 2 potentially explosive
atmospheres, given in Annex II to this Directive.
Compliance with the Essential Health and Safety Requirements has been assured
by compliance with EN 60079-15 and EN 60079-0.