Rockwell Automation 1746-BTM Installation Instructions

Installation Instructions

Barrel Temperature Control Module

Cat. No. 1746-BTM

Contents

Use this document as a guide to install and wire the 1746-BTM barrel temperature control

module.

For this information See page

Important User Information 2
Prevent Electrostatic Discharge 3
How to Get the Related User Manual 4
Determine the Module’s Chassis Power Requirement 4
Choose a Module Slot in a Local I/O Chassis 4
Install the Module 5
Wire the RTB 9

For this reference information See page

Specifications 14

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2 Barrel Temperature Control Module

WARNING

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ATTENTION

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IMPORTANT

Important User Information

Because of the variety of uses for the products described in this publication, those responsible for

the application and use of these products must satisfy themselves that all necessary steps have been
taken to assure that each application and use meets all performance and safety requirements,
including any applicable laws, regulations, codes and standards.

In no event will Rockwell Automation be responsible or liable for indirect or consequential
damage resulting from the use or application of these products.

Any illustrations, charts, sample programs, and layout examples shown in this publication are
intended solely for purposes of example. Since there are many variables and requirements
associated with any particular installation, Rockwell Automation does not assume responsibility or
liability (to include intellectual property liability) for actual use based upon the examples shown in
this publication.

Allen-BradleyTM publication SGI-1.1, Safety Guidelines for the Application, Installation and Maintenance of
Solid-State Control (available from your local Rockwell Automation office), describes some
important differences between solid-state equipment and electromechanical devices that should be
taken into consideration when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or part, without written
permission of Rockwell Automation, is prohibited.

Throughout this publication, notes may be used to make you aware of safety considerations. The
following annotations and their accompanying statements help you to identify a potential hazard,
avoid a potential hazard, and recognize the consequences of a potential hazard:

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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.

Identifies information about practices or circumstances that can lead
to personal injury or death, property damage, or economic loss.

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

Barrel Temperature Control Module 3

ATTENTION

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ATTENTION

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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
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.

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 wrist strap

• 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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4 Barrel Temperature Control Module

IMPORTANT

How to Get the Related User Manual

The following table describes the related user manual that is available for this module. To
order a copy or to view or download an online version, visit The Automation Bookstore at:

www.theautomationbookstore.com

For information about: See this document: Publication number:

Programming, calibrating and
troubleshooting the barrel
temperature module

Barrel Temperature Control Module
User Manual

1746-UM010

Determine the Module’s Chassis Power Requirement

When computing power supply requirements, add the values shown below to the
requirements of all other modules in the SLC

power supply:

5V dc amps 24V dc amps

0.110 0.085

® chassis to prevent overloading the chassis

Choose a Module Slot in a Local I/O Chassis

Place your module in any slot of an SLC 500TM module, or modular expansion chassis, except
for the left–most slot (slot 0), reserved for the SLC processor or adapter modules.

Installation Considerations

Most thermocouple–type applications require an industrial enclosure to reduce the effects of
electrical interference. Thermocouple inputs are highly susceptible to electrical noises due to
the small signal amplitudes (microvolt/C°). Isolate them from other input wiring and
modules that radiate electrical interference.

Group your modules within the I/O chassis to minimize adverse effects from radiated
electrical noise and heat. Consider the following conditions when selecting a slot location.
Position the module away from modules that:

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For proper operation, use this module with a local processor. The
module is not designed to operate in a remote chassis.

• connect to sources of electrical noise such as relays and ac motor drives

• generate significant heat, such as 32–point I/O modules

Barrel Temperature Control Module 5

WARNING

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Install the Module

To install your module into the chassis:

1. Turn off the chassis power supply.

If you insert or remove the module while backplane power is on, an
electrical 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.

2. Align the circuit board of the thermocouple module with the card guides located at

the top and bottom of the chassis.

3. Slide the module into the chassis until both top and bottom retaining clips are

secured. Apply firm even pressure on the module to attach it to its backplane
connector. Never force the module into the slot.

4. Cover unused slots with the card slot filler, catalog number 1746–N2.

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