Rockwell Automation 2085-IRT4 User Manual

Installation Instructions

Micro800 4-channel Thermocouple/RTD
Input Module

Catalog Number 2085-IRT4

http://www.rockwellautomation.com/literature/

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Table of Contents

Topic Page

Important User Information 2

Additional Resources 5

Overview 5

Module Description 6

Mount the Module 6

Wire the Outputs 9

Specifications 9

2 Micro800 4-channel Thermocouple/RTD Input Module

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
Automation sales office or online at http://www.rockwellautomation.com/literature/
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, when necessary, 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.

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 and recognize the
consequences.

SHOCK HAZARD: Labels may be on or inside the equipment (for example, drive or motor) to alert people that
dangerous voltage may be present.

BURN HAZARD: Labels may be on or inside the equipment (for example, drive or motor) to alert people that
surfaces may reach dangerous temperatures.

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

available from your local Rockwell

) describes some important differences

Publication 2085-IN007A-EN-P - September 2012

Micro800 4-channel Thermocouple/RTD Input Module 3

Environment and Enclosure

ATTENTION: 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 the following:

• Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1
additional installation requirements.

• NEMA Standard 250 and IEC 60529, as applicable, for explanations of the degrees of
protection provided by enclosures.

, for

Preventing Electrostatic Discharge

ATTENTION: 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.

Publication 2085-IN007A-EN-P - September 2012

4 Micro800 4-channel Thermocouple/RTD Input Module

North American Hazardous Location Approval

The following modules are North American Hazardous Location approved: 2085-IRT4

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.

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 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.

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: When you connect or disconnect the Removable Terminal Block (RTB) with field side
power applied, 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.

WARNING: When used in a Class I, Division 2, hazardous location, this equipment must be
mounted in a suitable enclosure with proper wiring method that complies with the governing
electrical codes.

WARNING: If you connect or disconnect wiring while the field-side 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.

WARNING: Do not connect directly to line voltage. Line voltage must be supplied by a suitable,
approved isolating transformer or power supply having short circuit capacity not exceeding
100 VA maximum or equivalent.

WARNING: 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 before proceeding.

WARNING: Do not unscrew the RTB hold down screws and remove the RTB while power is on.
This could cause an explosion in hazardous location installations. Be sure that power is removed
before proceeding.

Publication 2085-IN007A-EN-P - September 2012

Micro800 4-channel Thermocouple/RTD Input Module 5

4532445323

1

1

7

Front view

Right top view

1

2

6

5

4

4

4

3

3

Additional Resources

Resource Description

Micro830 and Micro850 Programmable
Controller User Manual,
publication 2080-UM002

Micro 800 Bus Terminator Installation
Instructions, publication 2085-IN002

Industrial Automation Wiring and
Grounding Guidelines, publication 1770-4.1

A detailed description of how to install and use a Micro850
Programmable Controller.

Information on installing the bus terminator module.

More information on proper wiring and grounding techniques.

If you would like a manual, you can:

• download a free electronic version from the Internet:

http://www.rockwellautomation.com/literature/

.

• purchase a printed manual by contacting your local Allen-Bradley distributor or
Rockwell Automation representative

Overview

The Micro800™ expansion I/O is a modular I/O that complements and extends the capabilities
of Micro850™ controllers. These expansion I/O modules interface with Micro850 controllers
using an I/O expansion port.

I/O Module Overview

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6 Micro800 4-channel Thermocouple/RTD Input Module

Module Description

Description Description

1 Mounting screw hole / mounting foot 5 Module interconnect latch

2 Removable Terminal Block (RTB) 6 DIN rail mounting latch

3 Thermistor 7 I/O status LED

4 RTB hold down screws

This equipment is sensitive to electrostatic discharge (ESD).
Follow ESD prevention guidelines when handling this equipment.

ATTENTION: To comply with UL restrictions, this equipment must be powered from a source
compliant with the following:

Class 2 or Limited Voltage/Current.
ATTENTION: To comply with the CE Low Voltage Directive (LVD), all connected I/O must be

powered from a source compliant with the following:
Safety Extra Low Voltage (SELV) or Protected Extra Low Voltage (PELV).

Mount the Module

For more information on proper grounding guidelines, see the Industrial Automation Wiring
and Grounding Guidelines, publication 1770-4.1.

Module Spacing

Maintain spacing from objects such as enclosure walls, wireways and adjacent equipment. Allow

50.8 mm (2 in.) of space on all sides for adequate ventilation, as shown.

Publication 2085-IN007A-EN-P - September 2012

Micro800 4-channel Thermocouple/RTD Input Module 7

TIP

45325

Mounting dimensions do not include mounting feet or DIN rail latches.

90 mm
(3.54 in.)

150 mm (5.91 in.)

Micro850 Controller

Bus terminator

2085-IRT4

44.5 mm (1.75 in.)

87 mm (3.42 in.)

Mounting Dimensions and DIN Rail Mounting

DIN Rail Mounting

The module can be mounted using the following DIN rails: 35 x 7.5 mm x 1 mm
(EN 50 022 - 35 x 7.5)

For environments with greater vibration and shock concerns, use the panel mounting method,
instead of DIN rail mounting.

.

ATTENTION: This product is 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.

Before mounting the module on a DIN rail, use a flat-blade screwdriver in the DIN rail latch and
pry it downwards until it is in the unlatched position.

1. Hook the top of the DIN rail mounting area of the module onto the DIN rail, and then
press the bottom until the module snaps onto the DIN rail.

2. Push the DIN rail latch back into the latched position.
Use DIN rail end anchors (Allen-Bradley part number 1492-EAJ35 or 1492-EAHJ35)
for vibration or shock environments.

To remove your module from the DIN rail, pry the DIN rail latch downwards until it is in the
unlatched position.

Publication 2085-IN007A-EN-P - September 2012

8 Micro800 4-channel Thermocouple/RTD Input Module

Panel Mounting

The preferred mounting method is to use two M4 (#8) per module. Hole spacing tolerance:
±0.4 mm (0.016 in.). For mounting dimensions, refer to Micro830 and Micro850
Programmable Controller User Manual, publication 2080-UM002

Follow these steps to install your module using mounting screws.

1. Place the module next to the controller against the panel where you are mounting it.
Make sure the controller and module are spaced properly.

2. Mark drilling holes through the mounting screw holes and mounting feet then remove
the module.

3. Drill the holes at the markings, then replace the module and mount it.
Leave the protective debris strip in place until you are finished wiring the module and
any other devices.

.

System Assembly

The Micro800 expansion I/O module is attached to the controller or another I/O module by
means of interconnecting latches and hooks, as well as the bus connector. The Micro850
controller and expansion I/O modules must terminate with a 2085-ECR Bus
Terminator module.

Be sure to lock the module interconnect latches and tighten the RTB hold down screws before
applying power to the module.

For installation of the 2085-ECR module, refer to Micro800 Bus Terminator Module
Installation Instructions, publication 2085-IN002

ATTENTION: Failure to connect a bus terminator module to the last expansion I/O module will
result in a controller hard fault.

.

Field Wiring Connections

In solid-state control systems, grounding and wire routing helps limit the effects of noise due to
electromagnetic interference (EMI).

ATTENTION: Do not wire more than 2 conductors on any single terminal.

Publication 2085-IN007A-EN-P - September 2012

Micro800 4-channel Thermocouple/RTD Input Module 9

TIP

CH0+

CH0H

CH0L

CH0-

CH1+

CH1H

CH1L

CH1-

NC

NC

NC

NC

CH2+

1

2

1

2a

1a

2

CH2H

CH2L

CH2-

CH3+

CH3H

CH3L

CH3-

CJC+

CJC+

TH

CJC-

TH

CJC-

NC

Shielded cable

Shielded cable

1

2

1

2

1a

Shielded cable

2-wire RTD

4-wire RTD

3-wire RTD

Thermocouple

Shielded cable

mV

OR

45326

If a thermocouple is used, the use of the
supplied CJC assembly is compulsory.

Terminal Block 1 Terminal Block 2

Wire the Outputs

Included with your module are two 12-pin Removable Terminal Blocks (RTB). Basic wiring of
the module is shown below.

Basic Wiring to the 2085-IRT4 Module

The module currently ships with the CJC assembly fixed to the module.

Specifications

General Specifications

Attribute Value

Number of I/O 4

Dimensions
HxWxD

Shipping weight, approx. 220 g (7.76 oz)

Bus current draw, max 5V DC, 160 mA

Wire size 0.25... 2.5 mm

Wiring category

Terminal screw torque 0.5…0.6 Nm

(1)

44.5 x 90 x 87 mm
(1.75 x 3.54 x 3.42 in.)

24V DC, 50 mA

greater, 1.2 mm (3/64 in.) insulation max

2 – on signal ports

(4.4…5.3 lb-in.)

2

(22...14 AWG) solid or stranded copper wire rated at 75 °C (167 °F ), or

(2)

Publication 2085-IN007A-EN-P - September 2012

10 Micro800 4-channel Thermocouple/RTD Input Module

General Specifications

Attribute Value

Input type Thermocouple type: B, C, E, J, K, TXK/XK (L), N, R, S, T

Resolution 16 bits

Channel update time, typical 12…500 ms per enabled channel
Input impedance > 10 M Ω

Power dissipation, total 2 W

Enclosure type rating None (open-style)

Status indicators 1 health status indicators

Isolation voltage 50V (continuous), Reinforced Insulation Type, channel to system.

North American temp code T4

(1)

Use this Conductor Category information f or planning conductor routing. Refer to Industrial Automation Wirin g and Grounding Guidelines,
publication 1770-4.1.

(2)

RTB hold down screws should be tightened by ha nd. They should not be tightened using a power tool.

RTD type:
100 Ω Pt α = 0.00385 Euro
200 Ω Pt α = 0.00385 Euro
100 Ω Pt α = 0.003916 U.S
200 Ω Pt α = 0.003916 U.S.
100 Ω Nickel 618
200 Ω Nickel 618
120 Ω Nickel 672
10 Ω Copper 427
mV range: 0…100 mV
Ohm input: 0…500 Ω

Type tested at 720V DC for 60 s

Environmental Specifications

Attribute Value

Temperature, operating IEC 60068-2-1 (Test Ad, Operating Cold),

Temperature, surrounding air, max 65 °C (149 °F)

Temperature, non-operating IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold),

Relative humidity IEC 60068-2-30 (Test Db, Unpackaged Damp Heat):

Vibration IEC 60068-2-6 (Test Fc, Operating):

Shock, operating IEC 60068-2-27 (Test Ea, Unpackaged Shock):

Shock, non-operating IEC 60068-2-27 (Test Ea, Unpackaged Shock):

IEC 60068-2-2 (Test Bd, Operating Dry Heat),
IEC 60068-2-14 (Test Nb, Operating Thermal Shock):

-20…65 °C (-4…149 °F)

IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat),
IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal Shock):

-40…85 °C (-40…185 °F)

5…95% non-condensing

2 g @ 10…500 Hz

25 g

25 g – DIN rail mount
35 g – Panel mount

Publication 2085-IN007A-EN-P - September 2012

Micro800 4-channel Thermocouple/RTD Input Module 11

Environmental Specifications

Attribute Value

Emissions CISPR 11

ESD immunity IEC 61000-4-2:

Radiated RF immunity IEC 61000-4-3:

EFT/B immunity IEC 61000-4-4:

Surge transient immunity IEC 61000-4-5:

Conducted RF immunity IEC 61000-4-6:

Group 1, Class A

6 kV contact discharges
8 kV air discharges

10V/m with 1 kHz sine-wave 80% AM from 80…2000 MHz
10V/m with 200 Hz 50% Pulse 100% AM at 900 MHz
10V/m with 200 Hz 50% Pulse 100% AM at 1890 MHz
10V/m with 1 kHz sine-wave 80% AM from 2000…2700 MHz

±2 kV at 5 kHz on signal ports

±2 kV line-earth(CM) on shielded ports

10V rms with 1 kHz sine-wave 80% AM from 150 kHz…80 MHz

Certifications

Certification (when product

(1)

is marked)

c-UL-us UL Listed Industrial Control Equipment, certified for US and Canada. See UL File E322657.

CE European Union 2004/108/EC EMC Directive, compliant with:

C-Tick Australian Radiocommunications Act, compliant with:

KC Korean Registration of Broadcasting and Communications Equipment, compliant with:

(1)

See the Product Certification link athttp://www.rockwellautomation.com/p roducts/certification/ for Declaration of Conformity, Certificates, and
other certification details.

Valu e

UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations, certified for U.S. and

Canada. See UL File E334470

EN 61326-1; Meas./Control/Lab., Industrial Requirements
EN 61000-6-2; Industrial Immunity
EN 61000-6-4; Industrial Emissions
EN 61131-2; Programmable Controllers (Clause 8, Zone A & B)

AS/NZS CISPR 11; Industrial Emissions

Article 58-2 of Radio Waves Act, Clause 3

Publication 2085-IN007A-EN-P - September 2012

Rockwell Automation Support

Rockwell Automation provides technical information on the Web to assist you in using its products. At

http://www.rockwellautomation.com/support/

application notes, sample code and links to software service packs, and a MySupport feature that you can customize to make the
best use of these tools.

For an additional level of technical phone support for installation, configuration and troubleshooting, we offer TechConnect
support programs. For more information, contact your local distributor or Rockwell Automation representative, or visit

http://www.rockwellautomation.com/support/

, you can find technical manuals, a knowledge base of FAQs, technical and

.

Installation Assistance

If you experience a problem within the first 24 hours of installation, please review the information that's contained in this
manual. You can also contact a special Customer Support number for initial help in getting your product up and running.

United States or Canada 1.440.646.3434
Outside United States or

Canada

Use the Worldwide Locator

http://www.rockwellautomation.com/support/americas/phone_en.html

Rockwell Automation representative.

at

, or contact your local

New Product Satisfaction Return

Rockwell Automation tests all of its products to ensure that they are fully operational when shipped from the manufacturing
facility. However, if your product is not functioning and needs to be returned, follow these procedures.

United States Contact your distributor. You must provide a Customer Support case number (call the phone

Outside United States Please contact your local Rockwell Automation representative for the return procedure.

number above to obtain one) to your distributor to complete the return process.

Documentation Feedback

Your comments will help us serve your documentation needs better. If you have any suggestions on how to improve this
document, complete this form, publication RA-DU002

, available at http://www.rockwellautomation.com/literature/.

Allen-Bradley, Rockwell Automation, Micro800 , and TechConnect are trademarks of R ockwell Automation, Inc.

Trademarks not belonging to Rockwell Automation are property of their respective companies.

Publication 2085-IN007A-EN-P - September 2012 PN-101627

Copyright © 2012 Rockwell Automation, Inc. All rights reserved. Printed in Singapore.