1734-UM004A-EN-P, POINT I/O Thermocouple and RTD Modules ... · POINT I/O Thermocouple and RTD Modules ... sample programs and layout examples shown ... 5V Encoder/Counter Module

POINT I/O Thermocouple and RTD ModulesCat. No. 1734-IT2I and 1734-IR2

User Manual

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 meets all performance and safety requirements, including any applicable laws, regulations, codes and standards. In no event will Allen-Bradley 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 guide are intended solely for purposes of example. Since there are many variables and requirements associated with any particular installation, Allen-Bradley does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application, Installation and Maintenance of Solid-State Control (available from your local Allen-Bradley 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 in 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.:

s

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.

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

Environment and Enclosure

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 publication 60664-1), at altitudes up to 2000 meters without derating.

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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Rockwell Automation offers support services worldwide, with over 75 sales/support offices, 512 authorized distributors and 260 authorized systems integrators located throughout the United States alone, as well as Rockwell Automation representatives in every major country in the world.

Local Product Support

Contact your local Rockwell Automation representative for:

• sales and order support

• product technical training

• warranty support

• support service agreements

Technical Product Assistance

If you need to contact Rockwell Automation for technical assistance, please review the troubleshooting information first. If the problem persists, then call your local Rockwell Automation representative.

Your Questions or Comments on this Manual

If you have comments about this manual, please use the “How Are We Doing” form at the back of this manual to let us know.

Preface

About This User Manual

Purpose of This Manual This manual describes how to install, configure and troubleshoot your Thermocouple and RTD modules.

Who Should Use This Manual

You must be able to use your selected configuration software to set up and calibrate these modules. You must have the capability to download and use files.

We assume you know how to do this in this manual. If you do not, refer to your software user manuals or online help before attempting to use these modules.

For information about: See:

Understanding Configurable POINT I/O Thermocouple Input Module and RTD Input Module Features

Chapter 1

Installing the Thermocouple or RTD Module Chapter 2

Configuring Your Thermocouple Input Module and Your RTD Input Module

Chapter 3

Calibrating Your Thermocouple or RTD Input Module Chapter 4

Troubleshooting the POINT I/O Thermocouple Input Module and the RTD Input Module

Chapter 5

Specifications Appendix A

1 Publication 1734-UM004A-EN-P - July 2001

Preface 2

Related Products and Documentation

The following table lists related 1734 products and documentation.

Description Cat. No. Publication

POINT I/O Technical Data 1734-Series 1734-TD002

Sink Input Module Installation Instructions 1734-IB2, -IB4 1734-IN051

Source Output Module Installation Instructions 1734-IV2, -IV4 1734-IN052

220V ac Input Module Installation Instructions 1734-IM 1734-IN008

120V ac Input Module Installation Instructions 1734-IA2 1734-IN010

120/220V ac Output Module Installation Instructions 1734-OA2 1734-IN009

Analog Current Input Module Installation Instructions 1734-IE2C 1734-IN053

Analog Current Output Module Installation Instructions 1734-OE2C 1734-IN054

Analog Voltage Input Module Installation Instructions 1734-IE2V 1734-IN001

Analog Voltage Output Module Installation Instructions 1734-OE2V 1734-IN002

Very High Speed Counter Module Installation Instructions 1734-VHSC24 1734-IN003

Very High Speed Counter Module Installation Instructions 1734-VHSC5 1734-IN004

5V Encoder/Counter Module Installation Instructions 1734-IJ 1734-IN005

24V Encoder/Counter Module Installation Instructions 1734-IK 1734-IN006

Thermocouple Input Module Installation Instructions 1734-IT2I 1734-IN011

RTD Input Module Installation Instructions 1734-IR2 1734-IN012

Relay Output Module Installation Instructions 1734-OW2 1734-IN055

Protected Output Module Installation Instructions 1734-OB2E, -OB4E 1734-IN056

DeviceNet Communication Interface Installation Instructions 1734-PDN 1734-IN057

POINT I/O 24V dc Expansion Power Supply Installation Instructions 1734-EP24DC 1734-IN058

Field Potential Distributor Installation Instructions 1734-FPD 1734-IN059

General Installation Instructions All 1734 1734-IN510

Wiring Base Assembly Installation Instructions 1734-TB, -TBS 1734-5.11

Wiring Base Assembly Installation Instructions 1734-TB3, -TB3S 1734-IN013

Cold Junction Wiring Base Assembly Installation Instruction 1734-TBCJC 1734-IN583

8 dc Input/8 Output Module Installation Instructions 1734D-IB8XOB8 1734-5.20

8 dc Input/8 Relay Output Module Installation Instructions 1734D-IB8XOW8 1734-5.21

8 ac Input/8 OutputModule Installation Instructions 1734D-IA8XOA8 1734-5.22

8 ac Input/8 Relay Output Module Installation Instructions 1734D-IA8XOW8 1734-5.23

16 ac Input Module Installation Instructions 1734D-IA16 1734D-IN001

16 dc Input Module Installation Instructions 1734D-IB16 1734D-IN002

Publication 1734-UM004A-EN-P - July 2001

Table of Contents

Understanding Configurable POINT I/OThermocouple Input Module and RTD Input Module Features

What this Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . . 1-1Setting a POINT I/O Thermocouple or RTD Module’s Operating Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Input Type Select. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Communicating with Your Module . . . . . . . . . . . . . . . . . . 1-2

Default Data Map for the Thermocouple Input Module, Cat. No. 1734-IT2I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Data Format (1734-IT2I and 1734-IR2) . . . . . . . . . . . . . 1-4

Using Module Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5Overrange Alarm (1734-IT2I and 1734-IR2) . . . . . . . . . . 1-5Underrange Alarm (1734-IT2I and 1734-IR2) . . . . . . . . . 1-5Level Alarms (1734-IT2I and 1734-IR2) . . . . . . . . . . . . . 1-5Open Wire Alarm (1734-IT2I and 1734-IR2) . . . . . . . . . 1-6

Cold Junction Compensation (1734-IT2I only) . . . . . . . . . . 1-6Cold Junction Enable (1734-IT2I only. . . . . . . . . . . . . . . . . 1-6Noise Filtering (1734-IT2I and 1734-IR2) . . . . . . . . . . . . . . 1-6Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Installing the Thermocouple or RTD Module

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Installing the Mounting Base/ Wiring Base Assembly . . . . . 2-1Installing an I/O Module . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3Installing the Removable Terminal Block . . . . . . . . . . . . . . 2-4Removing a Mounting Base . . . . . . . . . . . . . . . . . . . . . . . . 2-4Wiring the Thermocouple Input Module . . . . . . . . . . . . . . 2-5Wiring the RTD Input Module . . . . . . . . . . . . . . . . . . . . . . 2-6

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6


Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Commissioning a Node . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Using the RSNetWorx Commissioning Tool . . . . . . . . . . 3-2Using Sequential Auto Addressing . . . . . . . . . . . . . . . . 3-3Using 3rd Party Configuration Software. . . . . . . . . . . . . 3-3

Adding the Adapter to Your Network. . . . . . . . . . . . . . . . . 3-4Adding I/O Modules to Your Network . . . . . . . . . . . . . 3-5

Setting the Thermocouple Input Module Parameters Using RSNetWorx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7Configuring Your Thermocouple Input Module . . . . . . . . . 3-9

Basic Setup Parameters . . . . . . . . . . . . . . . . . . . . . . . . 3-9Advanced Setup Parameters . . . . . . . . . . . . . . . . . . . . . 3-10

Setting the RTD Input Module Parameters Using RSNetWorx 3-14Configuring Your RTD Input Module . . . . . . . . . . . . . . . . . 3-16

Basic Setup Parameters . . . . . . . . . . . . . . . . . . . . . . . . 3-16Advanced Setup Parameters . . . . . . . . . . . . . . . . . . . . . 3-17

Checking I/O Status and Viewing/Editing the EDS File . . . . 3-211734-IT2I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-211734-IR2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

i Publication 1734-UM004A-EN-P - July 2001

Table of Contents ii

Calibrating Your Thermocouple or RTD Input Module

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 4-1When and How to Calibrate Your POINT I/OThermocouple or RTD Input Module . . . . . . . . . . . . . . . . . 4-1Calibration Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Tools and Equipment Required to Calibrate Your Thermocouple Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2Calibrating the Thermocouple Input Module . . . . . . . . . . . 4-2

Input (mV) Calibration . . . . . . . . . . . . . . . . . . . . . . . . . 4-4Cold Junction Compensation Calibration . . . . . . . . . . . . 4-5

Tools and Equipment Required to Calibrate Your RTD Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8Calibrating the RTD Input Module . . . . . . . . . . . . . . . . . . . 4-8Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12


What this Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . . 5-1Troubleshooting with the Indicators. . . . . . . . . . . . . . . . . . 5-1Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Specifications 1734-IR2 RTD Input Analog Module. . . . . . . . . . . . . . . . . . A-11734-IT2I Thermocouple Input Module . . . . . . . . . . . . . . . A-3

Safety Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

How Are We Doing?

Index


Chapter 1

Understanding Configurable POINT I/OThermocouple Input Module and RTD Input Module Features

What this Chapter Contains

Read this chapter to familiarize yourself with configurable features on the 1734-IT2I module and the 1734-IR2 module.

This chapter describes the following features:

• Input type• Sensor type• Data formats• Preset temperature selection• Fault mode• Overrange Alarms• Underrange alarms• Fault alarms

Important:You must use your programming software, like Rockwell Automation RSNetworx, to configure these features. A brief description of each module feature is provided in this chapter, but you must use the online help included with your programming software to perform specific configuration. You can find the EDS files for this module at www.ab.com/networks/eds/.

For information on: See page:

Setting a POINT I/O Thermocouple or RTD Module’s Operating Status

1-2

Input Type Select 1-2

Input Type Select 1-2

Data Format (1734-IT2I and 1734-IR2) 1-4

Using Module Alarms 1-5

Overrange Alarm (1734-IT2I and 1734-IR2) 1-5

Underrange Alarm (1734-IT2I and 1734-IR2) 1-5

Open Wire Alarm (1734-IT2I and 1734-IR2) 1-6

Chapter Summary 1-6


1-2 Understanding Configurable POINT I/O Thermocouple Input Module and RTD Input Module Features

Setting a POINT I/O Thermocouple or RTD Module’s Operating Status

Input Type Select

The 1734-IT2I consists fo two isolated millivolt inputs (+70mV). The module can be configured to do the linearization necessary for thermocouple inputs. Supported thermocouple input types are

The 1734-IR2 consists of two RTD inputs (0 to 600Ω). The module can be configured to do the linearization necessary for RTD inputs. Supported input types are

Communicating with Your Module

I/O messages are sent to (consumed) and received from (produced) the POINT I/O modules. These messages are mapped into the processor’s memory. The Thermocouple input module produces 8 bytes of input data (scanner Rx) and fault status data. It does not consume I/O data (scanner Tx).

The RTD input module produces 6 bytes of input data (scanner Rx) and fault status data. It does not consume I/O data (scanner Tx).

Supported Sensor Types - Thermocouple

mV (default) -70 to +70mV

B 300 to 1800°C (572 to 3272°F)

C 0 to 1000°C (32 to 1832°F)

E –250 to 1000°C (–418 to 1832°F)

J –210 to 1200°C (–346 to 2192°F)

K –250 to 1372°C (–418 to 2502°F)

N –250 to 1300°C (–418 to 2372°F)

R –0 to 1768°C (32 to 3214°F)

S –0 to 1768°C (32 to 3214°F)

T –250 to 400°C (–418 to 752°F)

Supported Sensor Types - RTD

100 Pt α = 0.00385 Euro (-200 to +870°C)

200 Pt α = 0.00385 Euro (-200 to +630°C)

100 Pt α = 0.003916 U.S. (-200 to +630°C)

200 Pt α = 0.003916 U.S. (-200 to +630°C)

10 Cu α = 0.00427 (-200 to +260°C)

100 Ni α = 0.00618 (-60 to +250°C)

120 Ni α = 0.00618 (-60 to +250°C)

120 Ni α = 0.00618 (-60 to +250°C)


Understanding Configurable POINT I/O Thermocouple Input Module and RTD Input Module Features 1-3

Default Data Map for the Thermocouple Input Module, Cat. No. 1734-IT2I

Default Data Map for the RTD Input Module, Cat. No. 1734-IR2

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Produces (scanner Rx)

Input Channel 0 - High Byte Input Channel 0 - Low Byte


Status Byte for Channel 1 Status Byte for Channel 0

OR UR HHA LLA

HA LA CM CF OR UR HHA LLA

HA LA CM CF

OR UR Cold Junction Temperature (Selectable: Channel 0, Channel 1, or Average of both Channel 0 and 1)

Consumes (scanner Tx)

No consumed data

Where: CF = Channel Fault status; 0 = no error, 1 = faultCM = Calibration Mode; 0 = normal, 1 = calibration modeLA = Low Alarm; 0 = no error, 1 = fault (value went below setpoint)HA = High Alarm; 0 = no error, 1 = fault (value went below setpointLLA = Low/Low Alarm; 0 = no error, 1 = fault (value went below setpointHHA = High/High Alarm; 0 = no error, 1 = fault (value went below setpointUR = Underrange; 0 = no error, 1 = fault (value went below selected range)OR = Overrange; 0 = no error, 1 = fault (value went above selected range)

15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Produces (scanner Rx) Input Channel 0 - High Byte Input Channel 0 - Low Byte


Status Byte for Channel 1 Status Byte for Channel 0

OR UR HHA LLA

HA LA CM CF OR UR HHA LLA

HA LA CM CF

Consumes (scanner Tx) No consumed data

Where: CF = Channel Fault status; 0 = no error, 1 = faultCM = Calibration Mode; 0 = normal, 1 = calibration modeLA = Low Alarm; 0 = no error, 1 = fault (value went below setpoint)HA = High Alarm; 0 = no error, 1 = fault (value went below setpoint)LLA = Low/Low Alarm; 0 = no error, 1 = fault (value went below setpoint)HHA = High/High Alarm; 0 = no error, 1 = fault (value went below setpoint)UR = Underrange; 0 = no error, 1 = fault (value went below selected range)OR = Overrange; 0 = no error, 1 = fault (value went above selected range)



Data Format (1734-IT2I and 1734-IR2)

You must choose a module data format in your user program. Select the format. There are 4 predefined scales and 1 custom scale..

oC, oF, °R and oK will have data returned in tenths of a degree (250 implies 25.0°).

For the 1734-IR2, if using ohms, the default data returned is in tenths of ohms (1234 implies 123.4 ohms).

For the 1734-IT2, if using mV, the default data is returned in hundredths of a mV, or tens of a µV (3500 implies 35.00°).

If the input scale is custom scale, you can specify scaling points as shown in the table below.

Data Format

mV Custom Scale

°C Celcius

Predefined Scale°F Fahrenheit

°K Kelvin°R Rankine

1734-IT2I Thermocouple Input Module RTD Input Module

Thermocouple Type

Low Scaling Endpoint

High Scaling Endpoint

RTD Type Low Scaling Endpoint


mV 0mV 70mV Ohms 100Ω 500Ω

Type B 100°C 1000°C 100Ω Pt α = 0.00385 Euro 0°C 500°C

Type C 0°C 1000°C 200Ω Pt α = 0.00385 Euro 0°C 500°C

Type E 0°C 1000°C 100Ω Pt α = 0.003916 U.S. 0°C 500°C

Type J 0°C 1000°C 200Ω Pt α = 0.003916 U.S. 0°C 500°C

Type K 0°C 1000°C 10Ω Cu α = 0.00427 0°C 250°C

Type N 0°C 1000°C 100Ω Ni α = 0.00618 0°C 250°C

Type R 0°C 1000°C 120Ω Ni α = 0.00672 0°C 250°C

Type S 0°C 1000°C 120Ω Niα = 0.00618 0°C 250°C

Type T 0°C 100°C


Understanding Configurable POINT I/O Thermocouple Input Module and RTD Input Module Features 1-5

Using Module Alarms POINT I/O modules are capable of generating the following alarms:

• Overrange• Underrange• Level (low-low, low, high, high-high)• Cold Junction Compensation (CJC) Fault (1734-IT2 only)• Open Wire Detection

Overrange Alarm (1734-IT2I and 1734-IR2)

The channel overrange alarm is set if the input is greater than the maximum temperature (thermocouple or RTD range dependent), millivolt (+75mV) or resistance (600Ω) range value, or above the maximum range of the thermocouple or RTD.

The cold junction compensator has its own overrange alarm. If the CJC temperature goes above 70°C, the overrange alarm is set.

Underrange Alarm (1734-IT2I and 1734-IR2)

The channel underrange alarm is set if the input is less than the minimum temperature (thermocouple or RTD range dependent), millivolt (-75mV) or resistance (10Ω) range value, or below the minimum range of the thermocouple or RTD.

The cold junction compensator has its own underrange alarm. If the CJC temperature goes below 0°C, the underrange alarm is set.

Level Alarms (1734-IT2I and 1734-IR2)

There are 4 different level alarms available to the user.

• Low,

• Low-Low,

• High

• High-High.

When the channel input goes below a low alarm or above a high alarm, a bit is set in the data table. All Alarm Status bits can be read individually or by reading the Channel Status Byte (Bits 2-5 for channel 0; bits 10-13 for channel 1).

Each channel Alarm can be configured individually.



Open Wire Alarm (1734-IT2I and 1734-IR2)

The module has the ability to check for a broken or detached wire. In any mode, if a broken/detached lead is detected, the data value is forced to maximum and the overrange alarm is set. Once the alarm is issued, it remains active as long as the input signal is faulted.

Cold Junction Compensation (1734-IT2I only)

When using thermocouples, cold junction compensation is required at the termination of the thermocouple wire. Cold junction can be accomplished in 3 different ways:

• enter an estimated temperature• use a 1734-TBCJC mounting base (recommended)• use external cold junction compensators

Entering an estimated temperature is the least accurate way for CJC compensation. Using external CJC is the most expensive way. Using the compensation built-into the 1734-TBCJC provides the easiest and most accurate way.

An open CJC causes the CJC input point to the maximum temperature value for the selected input type. This will cause an alarm to be set. Once the alarm is issued, it remains active as long as the input signal is faulted (above maximum).

Cold Junction Enable (1734-IT2I only)

Set this bit to enable or disable the cold junction linearization. If enabled, the proper cold junction compensation value will be applied to the selected thermocouple. If disabled, the data (CJ Temperature) will still be available but not applied to the input. If the Cold Junction Compensation Removable Terminal Block is not available, this parameter should be set to “disabled.” A cold junction value can be added using the 'Cold Junction Offset' parameter.

Noise Filtering (1734-IT2I and 1734-IR2)

You can select the type and amount of noise filtering on each individual channel.

• Notch filter of analog to digital converter• First order low pass digital filter

Choose the filter that provides you with the update and step response that most closely matches your system requirements.

Chapter Summary In this chapter, we told you about the POINT system and the Thermocouple and RTD modules, and how they communicate with programmable controllers.


Chapter 2

Installing the Thermocouple or RTD Module

General The 1734-IR2 RTD module uses a 1734-TB or -TBS mounting base assembly with a 1734-RTB removable terminal block (RTB) for RTD wiring.

The thermocouple module uses a 1734-TBCJC mounting base assembly with a 1734-CJCRTB removable terminal block with built-in cold junction compensation for the thermocouple inputs.

Installing the Mounting Base/ Wiring Base Assembly

The wiring base assembly (1734-TB or -TBS) consists of a mounting base (cat. no. 1734-MB) and a removable terminal block (cat. no. 1734-RTB or -RTBS). The wiring base assembly (1734-TBCJC) consists of a mounting base (cat. no. 1734-MB) and a removable terminal block (cat. no. 1734-RTBCJC). You can install the assembly, or just the mounting base.

To install the mounting base/wiring base assembly on the DIN rail:

1. Position the mounting base/wiring base assembly vertically above the installed units (adapter, power supply or existing module).

2. Slide the mounting base down allowing the interlocking side pieces to engage the adjacent module or adapter.


2-2 Installing the Thermocouple or RTD Module

3. Press firmly to seat the mounting base on the DIN rail. The mounting base will snap into place.

4. To remove the mounting base from the DIN rail:

a. remove any installed module (and any module immediately to the right), and

b. use a small bladed screwdriver to rotate the DIN rail locking screw to a vertical position. This releases the locking mechanism. Then lift straight up to remove the mounting base.

5. Repeat this procedure for the next mounting base assembly.

Relay

Output

Module

Status

Network

Status

NODE:

0

1

1734OX2

RTDInput

Module

Status

Network

Status

NODE:

0

1

Mounting Base

Mechanical Keying (orange)

Module Wiring Diagram

1

Insertable I/O Module

RTB Removal Handle

Removable Terminal Block (RTBCJC)

DIN Rail Locking Screw (orange)

Slide-in Writable Label

Interlocking Side Pieces

Module Locking Mechanism

Insertable I/O Module

RTB Removal Handle

Slide-in Writable Label

Interlocking Side Pieces

Module Locking Mechanism

Mounting Base

Mechanical Keying (orange)

1734-IR2 1734-IT2I

Module Wiring Diagram

DIN Rail Locking Screw (orange)


Installing the Thermocouple or RTD Module 2-3

Installing an I/O Module The module can be installed before, or after base installation. Make sure that the mounting base is correctly keyed before installing the module into the mounting base. In addition, make sure the mounting base locking screw is positioned horizontal referenced to the base.

1. Using a bladed screwdriver, rotate the keyswitch on the mounting base clockwise till the number required for the type of module being installed aligns with the notch in the base.

1734-RTD - Position 61734-IT2I - Position 6

2. Make certain the DIN rail locking screw is in the horizontal position. (You cannot insert the module if the locking mechanism is unlocked.)

3. Insert the module straight down into the mounting base and press to secure. The module will lock into place.

Turn the keyswitch to alignthe number with the notch.

Notch(position 6 shown)

Make sure the DIN rail locking screw is in the horizontal position.

Thermocouple

Input

Module

Status

Network

Status

1734IT2I

NODE:

0

1

30880-M



Installing the Removable Terminal Block

A removable terminal block is supplied with your mounting base assembly. To remove, pull up on the RTB handle. This allows the base to be removed and replaced as necessary without removing any of the wiring. To reinsert the removable terminal block, proceed as follows.

1. Insert the RTB end opposite the handle into the base unit. This end has a curved section that engages with the mounting base.

2. Rotate the terminal block into the mounting base until it locks itself in place.

3. If an I/O module is installed, snap the RTB handle into place on the module.

Removing a Mounting Base To remove a mounting base, you must remove any installed module, and remove the removable terminal block (if wired).

1. Unlatch the RTB handle on the I/O module.

2. Pull on the RTB handle to remove the removable terminal block.

3. Press in on the module lock on the top of the module and pull up on the I/O module to remove from the base.

4. Remove the module to the right of the base you are removing. (The interlocking portion of the base sits under the adjacent module.)

5. Use a small bladed screwdriver to rotate the orange DIN rail locking screw on the mounting base to a vertical position. This releases the locking mechanism.

6. Then lift the mounting base straight up to remove.

Hook the RTB end into the mounting base end, and rotate until it locks into place.

WARNING

!When you insert or remove the module while backplane power is on, or you connect or disconnect the RTB with field side power applied, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be sure power is removed or the area is nonhazardous before proceeding.


Installing the Thermocouple or RTD Module 2-5

Wiring the Thermocouple Input Module

1734IT2

Module StatusNetwork Status

Status of Input 0

Status of Input 1

0+

Shield

0-

1+ 1-

ThermocoupleInput

Module Status

Network Status

1734IT2I

NODE:

0

1

Shield

0+ 0-

1-1+

42017IR

3

5

7

4

6

Thermocouple 0

Thermocouple 1

0+ = Input channel 0 High0- = Input channel 0 Low1+ = Input channel 1 High1- = Input channel 1 LowShld = Shield

Channel Input High Input Low Shield

0+ 43

0- 5

1+ 63

1- 7

Power is provided by the internal power bus.



Wiring the RTD Input Module

Wiring Diagram

Chapter Summary In this chapter, you learned how to install your module and mounting base assembly. You also learned how to wire your module. Go on to Chapter 3 to learn how to configure your modules.

Channel High Signal (+) Low Signal (-) Return Shield

In 0/A 0 4 6

In 0/B 2

In 1.A 1 5 7

In 1/B 3

RTDInput

Module Status

Network Status

1734IR2

NODE:

0

1

1734IR2mod

Module Status

Network Status

Status of Input 0

Status of Input 1

Input 0/A HIgh Input

Input 0/B Low Input

RET 0

Shield

Input 1/A High Input

Input 1/B Low Input

RET 1

Shield

In 0/A In 1/A

In 1/BIn 0/B

RET 0 RET 1

ShieldShield

3-wire RTD

In = Input channelRET = Sensor returnShield = Sensor cable shield 42017R2

3

5

0 1

2

42-wire RTD

6 7 When using 2-wire RTDs, jumper IN/B to RET.


Chapter 3


This chapter describes how to configure your thermocouple input module with RSNetworx.

Configuration Overview Configuring POINT I/O modules is as easy as POINT and click. RSNetWorxTM allows you to simply identify the network and configure the I/O modules with easy-to-use Electronic Data Sheet (EDS) files - just POINT to the field and click on your selection.

To obtain EDS files for use in configuration, go to:http://www.ab.com/networks/eds.

In this chapter, you will learn how to:

• add the adapter to the system

• commission individual modules in the system

• and set the individual modules parameters.

Commissioning a Node There are 3 methods for commissioning nodes:

• using the RSNetworx commissioning pulldown

• using the Sequential Auto Addressing feature

• using 3rd party configuration software

For more information about: See page:

Configuration Overview 3-1

Commissioning a Node 3-1

Adding the Adapter to Your Network 3-4

Setting the Thermocouple Input Module Parameters Using RSNetWorx

3-7

Configuring Your Thermocouple Input Module 3-9

Setting the RTD Input Module Parameters Using RSNetWorx

3-14

Configuring Your RTD Input Module 3-16

Checking I/O Status and Viewing/Editing the EDS File 3-21


3-2 Configuring Your Thermocouple Input Module and Your RTD Input Module

Using the RSNetWorx Commissioning Tool

The RSNetWorx commissioning tool lets you commission devices (set the node address and the data rate parameters) that are either:

• connected to a DeviceNet network, or

• connected via a point-to-point connection.

The node commissioning tool works through RSLinx; RSNetWorx does not have to be online when performing the operation.

Before you can add any device to a DeviceNet network, it must be commissioned. This means that a node address and a data rate must be programmed into the device. Some devices are precommissioned, meaning a node address (usually set to 63) and a data rate (usually set to 500kbits/s) are programmed into the device at the factory prior to shipment. Other devices will need to be commissioned in the field. Once a device has been commissioned and attached to a network, you can use the RSNetWorx for DeviceNet node commissioning tool to edit the node address and data rate that were set previously.

Exercise caution while editing node addresses when on a network. When you apply a new node address, it immediately overwrites the node address data in the device currently specified. If you decide to reassign node addresses, you should first determine the order in which this needs to be done so that all the devices will still have unique node addresses when you are finished.

For example, if two of the devices on your network are a photoelectric sensor and a hand controller and you accidentally change the node address of the hand controller to be the same as that of the photoelectric sensor, then the photoelectric sensor will no longer have a unique address, which means that it will not be able to provide data to the scanner. If you cannot access a device, because you have used its node address for another device, you will have to remove it from the network, recommission it, then reinstall it on the network.

ATTENTION

!Do not change the data rate of devices while they are connected to a network. Erratic operation may result. We recommend that if you need to change the data rate of a device, you should remove it from the network, establish a point-to-point connection between the PC, which hosts the RSNetWorx for DeviceNet software, and the target device, recommission it, and then, reconnect it to the network.


Configuring Your Thermocouple Input Module and Your RTD Input Module 3-3

Using Sequential Auto Addressing

Sequential Auto Addressing (SAA) will reassign the node address of every module to the right of the one you select. Each module will change it’s node address to one greater than its neighbor.

When this command is set, each module to the right will get a new address one greater than its neighbor. The addressing will ripple through a line of Point I/O modules, assigning a node number to each module installed in a mounting base.

Steps to Auto Address a line of Point I/O modules:

1. Set the address of the first module you want to address.

2. Set the Auto Address command to ’Sequential Address.’

3. All modules in line will reset with new sequential addresses.

Example

For example, if there are 5 POINT I/O modules in a line, and the address of the first module is 10. After the ’Sequential Address’ command is sent to the first module, the node address of the line will be: 10, 11, 12, 13, and 14.

Using 3rd Party Configuration Software

When using 3rd party configuration software, simply load the EDS files into the software and follow the designers instructions.

IMPORTANT Make sure the node address of the selected module is the desired value before issuing the SAA command.



Adding the Adapter to Your Network

You can use the RSNetworx for DeviceNet software, or some other configuration tool for DeviceNet, to configure your module. If the EDS files are not in your software, you can get them at www.ab.com/networks/eds/.

You can configure the module while it is:

• online

or

• offline

This chapter shows configuration in the online mode. Configuration screens appear similar in both modes. The primary difference is that if you make changes offline, you must go online before the configuration changes take effect.

Follow these steps:

1. Start the RSNetworx for DeviceNet software.

2. Add the communication device as shown below. (In this case, the chosen device was a 1770-KFD RS232 Interface.)

1. Click here to expand the list of communication adapters.

2. Double-click here to choose the scanner. You can also click and drag the scanner name onto the network.Make sure you choose the 1734-ADN Point I/O Scanner.

The scanner appears on the network.



Adding I/O Modules to Your Network

After you add the communication device, you must add the POINT I/O modules connected to the scanner on the PointBus.

1. Add modules as shown below.

The out-of-the-box node setting for 1734 modules is 63. You can change the setting by using the node commissioning tool. The node commissioning tool is available either online or offline.

1. Click here to expand the list of Specialty modules.

2. Double-click on the catalog number to choose the module. You can also click and drag the module name onto the network.

IMPORTANT If you commission a node online, you must power down your system before the change takes place.



1. Go to the pulldown Tools. Select Node Commissioning.

2. Click on Browse. 3. Select the module to change.4. The node commissioning screen

returns. It displays the node number and data rate.

5. Change the node number and Apply. The screen will then identify the new setting.

6. Click on Close to continue.

4

2

3

1

5

6



Setting the Thermocouple Input Module Parameters Using RSNetWorx

After adding the module to the network, you must configure the modules for use.

1. Configure the modules as shown below.

You will see a pop-up screen with a series of tabs. Each tab provides options view or edit. The tabs are shown below and on the following pages. These screens are for the 1734-VHSC24 module. Identical screens are used for the 1734-VHSC5 module

IMPORTANT This chapter shows configuration in the online mode. Changes set in this mode take effect when you download to the individual module.

1. Right-click on the module.

2. Click on Properties to configure your adapter.

You can also left click on the module or name and the property screen will pop up.

These are the tabs you click on to view the options.



Refer to the screens below for an explanation of its features.

The module’s name appears here.

Type a description here.

The module’s address appears here. (This field is read only.)

This screen also shows the module’s device identity.

At any point, you can click here to finish changing configuration parameters.

IMPORTANT: If configuration changes are made in offline mode , they do not take effect until the system goes online..

Click on the Device parameters tab to get to the screen for setting the parameters.

This screen appears after clicking on the Device parameters tab. If you want the existing parameters uploaded from the module, select Upload. The following screen will then show the existing parameters set on the module.

Use this pulldown menu to edit or view the parameters. Available choices are:

PointBus

Status

Configuration



Configuring Your Thermocouple Input Module

Basic Setup Parameters

The basic parameters you need to set for the thermocouple module consist of:

• Temperature units - Select how the input will be linearized:

– mV/Custom Scale (default)

– Celsius

– Fahrenheit

– Kelvin

– Rankine

• Thermocouple type - Choose the type of sensor for this input. The module will perform the linearization of the selected type.

– mV (No Linearization)

– Type B

– Type C

– Type E

– Type J

– Type K

– Type N

– Type R

– Type S

– Type T

• Cold Junction Enable - This bit will enable or disable the cold junction linearization. If enabled, the proper cold junction compensation value will be applied to the selected thermocouple. If disabled, the data (CJ Temperature) will still be available but not applied to the input. If the Cold Junction Compensation Removable Terminal Block is not available, this parameter should be set to “disabled.” A cold junction value can be added using the 'Cold Junction Offset' parameter.

• Cold Junction Produced Data - Selects how the Cold Junction Data is returned in the Produced IO message. The last two bytes of the produced message will contain one of the following:

• - none (zeros)

• - Channel 0 (default)

• - Channel 1 - Average of both channels

IMPORTANT • The Over/Under Range status is also included in the last two bytes, along with the cold junction value.



Advanced Setup Parameters

Advanced parameters you can set for the thermocouple module consist of:

• Notch filter - Select the Notch Filter for the analog to digital converter. At higher frequencies, faster sample rates are possible

– 50Hz

– 60Hz (default)

– 100Hz

– 120Hz

– 200Hz

– 240Hz

– 300Hz

– 400Hz

– 480Hz

If the filter value is changed, the module may require calibration to meet specifications.

• Digital filter - A digital filter is available on this module. The user sets a time constant which is used in the equation:

Yn = Yn-1 + (dt / (dt + TA) * (Xn-Yn-1)

Where: Yn = new dataYn-1 = old data.dt = Channel Update Rate in milliseconds. TA = digital filter time constant.

Xn = present unfiltered data.

TA can be an integer from 0 to 10,000ms. If set to 0, the filter is

disabled.

• Cold Junction Offset - If you don’t use a 1734-RTBCJC removable terminal block, an estimate the junction temperature can be entered here. The value is entered in hundreths of degrees C, even if another scale is selected (2500 implies 25.00°C).



• Enable alarms latch - If enabled, alarms for this channel will latch FAULTED until a ’Latch Reset’ command is received.

Alarms effected:

– Input Status

– Low & High level Alarms

– Range Alarms

• Disable alarms - If Alarms are Disabled, all alarms for this channel will show No FAULT. This is useful for unused channels.

• Level alarms - low-low, low, high, and high-high - any value from -32768 to +32767 can be entered.

• Scaling - Values returned when input is at low scale value or high scale value. The low and high scale points are different for each sensor input:

Start configuration at the pulldown.

Thermocouple Type

Low Scaling Endpoint


mV 0mV 70mV

Type B 100°C 1000°C

Type C 0°C 1000°C

Type E 0°C 1000°C

Type J 0°C 1000°C

Type K 0°C 1000°C

Type N 0°C 1000°C

Type R 0°C 1000°C

Type S 0°C 1000°C

Type T 0°C 100°C

To configure your module, select Configuration and modify the parameters as desired for your application.

When complete, download to your module by clicking on the Download to Device button. You can download each change as you make it using “Single,” or download all your changes using “All.” If you press the “Apply” button, only the selected parameter is downloaded to the module.

Click here when finished.



1. Select the temperature

2. Then select the type of thermocouple.BCEJKNRST or mV.

Basic Setup

3. Select cold junction commpensation if desired.

5. Download to the device.

4. Select how the cold junction data is returned in the produced I/O message. Select None, channel 0. channel 1 or the average of both channels.



6. Select the notch filter desired (60Hz to 480Hz).

7. Select the digital filter (select as necessary).

8. Enable or disable the latching alarms.

Advanced Setup

9. Enable or disable the alarms.

10.Apply and download to the device.



Setting the RTD Input Module Parameters Using RSNetWorx

After adding the module to the network, you must configure the modules for use.

1. Configure the modules as shown below.

You will see a pop-up screen with a series of tabs. Each tab provides options view or edit. The tabs are shown below and on the following pages.

IMPORTANT This chapter shows configuration in the online mode. Changes set in this mode take effect when you download to the individual module.

1. Right-click on the module.

2. Click on Properties to configure your adapter.

You can also left click on the module or name and the property screen will pop up.

These are the tabs you click on to view the options.



Refer to the screens below for an explanation of its features.

The module’s name appears here.

Type a description here.

The module’s address appears here. (This field is read only.)

This screen also shows the module’s device identity.

At any point, you can click here to finish changing configuration parameters.

IMPORTANT: If configuration changes are made in offline mode , they do not take effect until the system goes online..

Click on the Device parameters tab to get to the screen for setting the parameters.

This screen appears after clicking on the Device parameters tab. If you want the existing parameters uploaded from the module, select Upload. The following screen will then show the existing parameters set on the module.

Use this pulldown menu to edit or view the parameters. Available choices are:

PointBus

Status

Configuration



Configuring Your RTD Input Module

The configuration is divided into two areas: basic and advanced.

Basic Setup Parameters

The basic parameters you need to set for the RTD module consist of:

• Temperature units - Use the Temperature Scale parameter to select a predefined scale or a custom scale. ’Custom Scale’ allows the user to enter the scaling endpoint values. If using ’Ohms’ RTD Type, this parameter is ignored. Predefined Scales: Celsius(C), Fahrenheit(F), Kelvin(K), and Rankine(R) Scaling Endpoints for ’Custom Scale’ (low & high):

• RTD type - Select the RTD type that the input will be using (see table above). Valid types are shown in the table above.

• Copper RTD Offset - If using the copper RTD, this is the error of the Copper RTD (10Ohm Cu427) in Ohms. Enter a value between -250 and 250 in hundredths of Ohms (i.e. 361 = 3.61 Ohms). This value will be added to the input reading before linearization.



Ohms 100Ω 500Ω

100Ω Pt α = 0.00385 Euro 0°C 500°C

200Ω Pt α = 0.00385 Euro 0°C 500°C

100Ω Pt α = 0.003916 U.S. 0°C 500°C

200Ω Pt α = 0.003916 U.S. 0°C 500°C

10Ω Cu α = 0.00427 0°C 250°C

100Ω Ni α = 0.00618 0°C 250°C

120Ω Ni α = 0.00672 0°C 250°C

120Ω Ni α = 0.00618 0°C 250°C



Advanced Setup Parameters

Advanced parameters you can set for the RTD module consist of:

• Notch filter - Select the Notch Filter for the analog to digital converter. At higher frequencies, faster sample rates are possible

– 50Hz

– 60Hz (default)

– 100Hz

– 120Hz

– 200Hz

– 240Hz

– 300Hz

– 400Hz

– 480Hz

If the filter value is changed, the module may require calibration to meet specifications.

• Digital filter - A digital filter is available on this module. The user sets a time constant which is used in the equation:

Yn = Yn-1 + (dt / (dt + TA) * (Xn-Yn-1)

Where: Yn = new dataYn-1 = old data.dt = Channel Update Rate in milliseconds. TA = digital filter time constant.

Xn = present unfiltered data.

TA can be an integer from 0 to 10,000ms. If set to 0, the filter is

disabled.

• Enable alarms latch - If enabled, alarms for this channel will latch FAULTED until a ’Latch Reset’ command is received.

Alarms effected:

– Input Status

– Low & High level Alarms

– Range Alarms



• Disable alarms - If Alarms are Disabled, all alarms for this channel will show No FAULT. This is useful for unused channels.

• Level alarms - low-low, low, high, and high-high -

• Scaling - Values returned when input is at low scale value or high scale value. The low and high scale points are different for each sensor input:

Start configuration at the pulldown.



Ohms 100Ω 500Ω

100Ω Pt α = 0.00385 Euro 0°C 500°C

200Ω Pt α = 0.00385 Euro 0°C 500°C

100Ω Pt α = 0.003916 U.S. 0°C 500°C

200Ω Pt α = 0.003916 U.S. 0°C 500°C

10Ω Cu α = 0.00427 0°C 250°C

100Ω Ni α = 0.00618 0°C 250°C

120Ω Ni α = 0.00672 0°C 250°C

120Ω Ni α = 0.00618 0°C 250°C

To configure your RTD module, select Configuration and modify the parameters as desired for your application.

When complete, download to your module by clicking on the Download to Device button. You can download each change as you make it using “Single,” or download all your changes using “All.” If you press the “Apply” button, only the selected parameter is downloaded to the module.

Click here when finished.



1. Select the type of RTD you are using for channel 0. Repeat for channel 1

2. Then select the scale for channel 0. Repeat for channel 1

Basic

This is the error of Copper RTD (10Ohm Cu427) in Ohms. Enter value between -250 and 250 in hundredths of Ohms (i.e. 361 = 3.61 Ohms). If you are using a copper RTD, this value will be added to the input reading before linearization.



3. Select the digital filter desired. (Range is 0 to 10.000ms.)

6. Select the notch filter.

4. Enable or disable the latching alarms.

Advanced

5. Enable or disable the alarms.

7. Apply and download to the device.



Checking I/O Status and Viewing/Editing the EDS File

You can view the I/O defaults setup, and the EDS file by clicking on the appropriate tab.

1734-IT2I

Click on the I/O Defaults tab to display the default characteristics for this module.

This screen shows the input/output defaults for the four modes. These are:StrobePolledChange of state andCyclic

Click on View File to view the actual EDS file (shown at the left).

Click on the EDS File tab to display the statistics of the EDS file used to configure this module.

You can view the actual EDS file or edit the file.



1734-IR2

Click on View File to view the actual EDS file (shown at the left).

Click on the EDS File tab to display the statistics of the EDS file used to configure this module.

Click on the I/O Defaults tab to display the default characteristics for this module.

This screen shows the input/output defaults for the four modes. These are:StrobePolledChange of state andCyclic


Chapter 4

Calibrating Your Thermocouple or RTD Input Module

What This ChapterContains

Use this chapter to calibrate the thermocouple/mV module or the RTD input module. We tell you about:

When and How toCalibrate Your POINT I/OThermocouple or RTD Input Module

Your module is shipped to you already calibrated. If a calibration check is required, the module must be in a POINT I/O system.

Perform module calibration periodically, based on your application. Module calibration may also be required to remove module error due to aging of components in your system.

Calibration Method Calibration is done through the I/O Configuration Software, such as RSNetworx and EDS files. If the EDS files are not in your software, you can get them at online at www.ab.com/networks/eds/.

For Information on: See Page

When and How to Calibrate Your POINT I/O Thermocouple or RTD Input Module 4-1

Calibration Method 4-1

Tools and Equipment Required to Calibrate Your Thermocouple Module 4-2

Calibrating the Thermocouple Input Module 4-2

Input (mV) Calibration 4-4

Cold Junction Compensation Calibration 4-5

Tools and Equipment Required to Calibrate Your RTD Module 4-8

Calibrating the RTD Input Module 4-8

Chapter Summary 4-12

1 Publication 1734-UM004A-EN-p - July 2001

4-2 Calibrating Your Thermocouple or RTD Input Module

Tools and Equipment Required to Calibrate Your Thermocouple Module

To calibrate your Thermocouple module, you will need the following tools and equipment

Calibrating the Thermocouple Input Module

To calibrate your thermocouple input module, connect the module in a DeviceNet system similar to that shown below.

.

Tool or Equipment: Description:

Precision Resistors High precision resistors:1000Ω, 0.05%, 5ppm/oC3000Ω, 0.05%, 5ppm/oCorCalibrated resistor Decade Box, 0.05%

Precision Voltage Source +100mV, 1mV resolution - accuracy +3µV or better

IMPORTANT Apply power to the power supply and module for at least 10 minutes before calibrating the module.

0 1 0 1 0 1 0 1 0 1 0 1 0 1

DeviceNet Input

Precision Voltage Source

Channel 0Connect to 4 and 5


IT2IPDN

Shield

0+0-

1- 1+

Thermocouple 0

Thermocouple 1

Precision Voltage Source

0+

0-1-

1+

1734-RTBCJC

1734-RTB

Precision resistors

0+ 1+

Publication 1734-UM004A-EN-p - July 2001

Calibrating Your Thermocouple or RTD Input Module 4-3

1. Double-click on the icon to bring up the general parameter screen.

2. The EDS editor will may you if you want to upload the configuration from the device. Click on Upload.

3. Select Calibration at the Group pulldown.

Click on Device Parameters to view the parameters

This is the group pulldown.


Pub


lication 1734-UM004A-EN-p - July 2001

Input (mV) Calibration

1. Click on Calibration Channel Select to bring up your channel selections. Select a channel (0 or 1), or select Both Channels. Click the Download to Device button.

2. Click on Calibration Command and select Begin Calibration. Click the Download to Device button. Both channel status indicators turn off.

3. Apply 0.00mV to the input (see wiring diagram on Page 4-2). Click on Accept Low Calibration. Click on the Download to Device button. The status indicator(s) for the channel(s) being calibrated will blink green.

For input calibration, choose:Input Channel 0,Input Channel 1, orBoth Channels.

Select Accept Low Input and download to the device.


4. Set the source to 70mV. Click on Accept High Input. Click on the Download to Device button.

Input calibration is now complete. The status indicator should be solid green (normal) or blinking red (no load). If an error occured during calibration, select Abort Calibration in the Calibration Command parameter to restore the previous calibration values, and try again.

Cold Junction Compensation Calibration

1. Click on Calibration Channel Select and select one channel, or both channels at once.

Select Cold Junction 0, Cold Junction 1, or Both Cold Junction.



2. Click on Calibration Command and select Begin CJC Calibration. Click the Download to Device button.

3. Using a 1734-RTB removable terminal block, apply 1000Ω to the selected CJC channel (see Page 4-2).

4. Select Accept Low CJC and download to the device.

5. Using a 1734-RTB removable terminal block, apply 3000Ω to the selected CJC channel.

Click on calibration command and select “Begin CJC calibration.” Then download to the module.



6. Select Accept High CJC and download to the device.

If RSNetWorx reports a communication error, or if an error occured during this calibration, abort calibration and try again.

7. Calibration is complete as soon as High and Low calibration for the selected channels are done successfully.

Repeat above steps to calibrate the other channel if you chose to only calibrate one channel at a time. Both high and low inputs must be accepted in order for the module to finish calibration.

Calibration is now complete.

If the module does not accept calibration (status indicator still blinking), click on Calibration Command and select Abort Calibration, apply and start over.

When the calibration is accepted by the module, it sets the Bat Cal Status bit for the channel to Good Calibration, as shown here.



Tools and Equipment Required to Calibrate Your RTD Module

To calibrate your RTD module, you will need the following tools and equipment

1734-IR2:

Calibrating the RTD Input Module

To calibrate your RTD input module, connect the module in a DeviceNet system similar to that shown below.

.

Tool or Equipment: Description:

Precision Resistors High precision resistors:100Ω, 0.04%, 5ppm/oC500Ω, 0.03%, 5ppm/oCorCalibrated resistor Decade Box, 0.05%

Precision Voltage Source +100mV, 1mV resolution - accuracy +3µV or better

IMPORTANT Apply power to the power supply and module for at least 10 minutes before calibrating the module.

0 1 0 1 0 1 0 1 0 1 0 1 0 1

DeviceNet Input

100Ω for Low; 500Ω for High


Decade Resistance Box

(0.05% or better)


IR2PDN

Channel 0 Channel 0



1. Double-click on the icon to bring up the general parameter screen.

2. The EDS editor may ask you if you want to upload the configuration from the device. Click on Upload.

3. Select Calibration at the Group pulldown. Click on Calibration Command and select Begin Calibration. Click the Download to Device button. Both channel status indicators turn off.

Click on Device Parameters to view the parameters

This is the group pulldown.

Select Begin Calibration on the calibration command pulldown.



4. Click on Calibration Channel Select to bring up your channel selections. Select a channel, or select both. Click the Download to Device button.

5. Using a 0.05% accurate resistance box, apply 100.00Ω to the input. Click on Accept Low Calibration. Click on the Download to Device button. The status indicator(s) for the channel(s) being calibrated will blink.

Select the desired channel, or select “Both Channels.”

Click on Single while doing this action.



6. Set the resistance box to 500Ω. Click on Accept High Calibration. Click on the Download to Device button.

7. Calibration is complete as soon as High and Low calibration for the selected channels are done successfully.

If you are calibrating each channel separately, repeat the above steps to calibrate the other channel. Both high and low inputs must be accepted in order for the module to finish calibration.

Calibration is now complete.

If the module does not accept calibration (status indicator still blinking), click on Calibration Command, select Abort Calibration and start over.



Chapter Summary In this chapter, you learned how to setup and calibrate your module. Look in chapter 5 to learn how to troubleshoot using the module indicators.


Chapter 5


What this Chapter Contains Read this chapter to troubleshoot your I/O module.

Troubleshooting with the Indicators

Each module has 4 indicators:

• Module status

• Network status

• Input 0 status

• Input 1 status

For Information on: See page:

Repair 5-2

Repair 5-2

Chapter Summary 5-3

RTDInput

Module Status

Network Status

1734IR2

NODE:

0

1

41974

Module Status

Network Status

Status of Input 0

Status of Input 1

ThermocoupleInput

Module Status

Network Status

1734IT2I

NODE:

0

1


5-2 Troubleshooting the POINT I/O Thermocouple Input Module and the RTD Input Module

Repair This module is not field repairable. Any attempt to open this module will void the warranty. If repair is necessary, return this module to the factory.

Indication Probable Cause

Module Status

Off No power applied to device

Green Device operating normally

Flashing Green Device needs commissioning due to configuration missing, incomplete or incorrect.

Flashing Red Recoverable fault.

Red Unrecoverable fault may require device replacement

Flashing Red/Green

Device is in self-test


Network Status

Off Device is not on-line- Device has not completed dup_MAC_id test.- Device not powered - check module status indicator

Flashing Green Device is on-line but has no connections in the established state.

Green Device on-line and has connections in the established state.

Flashing Red One or more I/O connections in timed-out state

Red Critical link failure - failed communication device. Device detected error that prevents it communicating on the network.

Flashing Red/Green

Communication faulted device - the device has detected a network access error and is in communication faulted state. Device has received and accepted an Identify Communication Faulted Request - long protocol message.


Channel Status

Off Module in CAL mode

Solid Green Normal (channel scanning inputs)

Flashing Green Channel being calibrated

Solid Red Major channel fault

Flashing Red Channel at end of range (over or under)


Troubleshooting the POINT I/O Thermocouple Input Module and the RTD Input Module 5-3

Chapter Summary In this chapter you learned how to troubleshoot the thermocouple and RTD modules. Move to Appendix A to see the specifications for your modules.


5-4 Troubleshooting the POINT I/O Thermocouple Input Module and the RTD Input Module


Appendix A

Specifications

1734-IR2 RTD Input Analog Module Specifications - 1734-IR2 RTD Input Analog Module

Input SpecificationsNumber of Inputs 2 single-ended, non-isolatedResolution 16 bits

9.5mV/cnt0.03°C/cnt (Pt385 @ 25°)

Input Range 0-600ΩSensors Supported 100Ω Pt α = 0.00385 Euro (-200 to +870°C)

200Ω Pt α = 0.00385 Euro (-200 to +630°C)100Ω Pt α = 0.003916 U.S. (-200 to +630°C)200Ω Pt α = 0.003916 U.S. (-200 to +630°C)10Ω Cu α = 0.00427 (-200 to +260°C)100Ω Ni α = 0.00618 (-60 to +250°C)120Ω Ni α = 0.00672 (-60 to +250°C)120Ω Ni α = 0.00618 (-60 to +250°C)

Absolute Accuracy1 0.1% Full Scale @ 25oCAccuracy Drift w/Temp. 30ppm/oCInput Update Rate(per module)

40ms @ Notch = 50Hz33ms @ Notch = 60Hz (default)20ms @ Notch = 100Hz17ms @ Notch = 120Hz10ms @ Notch = 200Hz8ms @ Notch = 240Hz7ms @ Notch = 300Hz5ms @ Notch = 400Hz4ms @ Notch = 480Hz

Step Response (per channel)

60ms @ Notch = 50Hz50ms @ Notch = 60Hz30ms @ Notch = 100Hz25ms @ Notch = 120Hz15ms @ Notch = 200Hz13ms @ Notch = 240Hz10ms @ Notch = 300Hz8ms @ Notch = 400Hz6ms @ Notch = 480Hz

Conversion Type Delta SigmaCommon Mode Rejection Ratio

120dB

Normal Mode Rejection Ratio

100dB-3dbNotch filter13.1Hz @ Notch = 50Hz15.7Hz @ Notch = 60Hz26.2Hz @ Notch = 100Hz31.4Hz @ Notch = 120Hz52.4Hz @ Notch = 200Hz62.9Hz @ Notch = 240Hz78.6Hz @ Notch = 300Hz104.8Hz @ Notch = 400Hz125.7Hz @ Notch = 380Hz

Data Format Signed integerMaximum Overload No input protectionSpecifications continued on next page.


A-2 Specifications

Calibration Factory calibratedIndicators 1 green/red module status indicator, logic side

1 green/red network status indicator, logic side2 green/red input status indicators, logic side

Keyswitch Position 6General SpecificationsModule Location 1734-TB or -TBS wiring base assemblyPointbus Current 220mA @ 5V dcPower Dissipation 1.0W maximumThermal Dissipation 3.3 BTU/hr maximumIsolation Voltage 50V ac rms

No isolation between individual channelsDielectric Test 1000V rms flash for 1sExternal dc Power No external supply requiredDimensions Inches

(Millimeters)2.21H x 0.47W x 2.97L (56H x 12W x 75.5L)

Environmental ConditionsOperational TemperatureStorage TemperatureRelative HumidityShock Operating

Non-operatingVibration

-20 to 55°C (-4 to 131°F)-40 to 85°C (-40 to 185°F)5 to 95% noncondensing30g peak acceleration, 11(±1)ms pulse width50g peak acceleration, 11(±1)ms pulse widthTested 5g @ 10-500Hz per IEC 68-2-6

Conductors Wire Size

Category

14 AWG (2.5mm2) - 22 AWG (0.25mm2) shielded solid or stranded copper wire rated @ 75°C or greater3/64 inch (1.2mm) insulation maximum22

Terminal Base Screw Torque

7 pound-inches (0.6Nm)

Field Wiring Terminations 0 - Input + 1 - Input +2 - Input - 3 - Input -4 - Return 5 - Return6 - Shield 7 - Shield

Mass 1.22 oz/34.6 gramsAgency Certification (when product is marked)

C-UL ListedC-UL Class I, Division 2, Groups A, B, C and D certifiedUL ListedUL Class I, Division 2, Groups A, B, C and D certifiedCE marked for all applicable directives.C-Tick marked for all applicable acts.DeviceNet compatible as certified by ODVA, Inc.

1 Includes offset, gain, non-linearity and repeatability error terms.2 Use this conductor category information for planning conductor routing as described in publication

1770-4.1, “Industrial Automation Wiring and Grounding Guidelines.”


Specifications A-3

1734-IT2I Thermocouple Input Module Specifications - 1734-IT2I 2 Thermocouple Input Analog Module

Input SpecificationsNumber of Inputs 2 differential, individually isolatedResolution (also see Thermocouple Type below)

15 bits plus sign2.5µV/cnt

Thermocouple Type (and resolution average over span)

Sensor Range Resolution (Average Over Span)Type B 30 to 1820°C 3 counts/°CType C 0 to 2315°C 6 counts/°CType E -270 to 1000°C 24 counts/°CType J -210 to 1200°C 21 counts/°CType K -270 to 1372°C 13 counts/°CType N -270 to 1300°C 11 counts/°CType R -50 to 1768.1°C 4 counts/°CType S -50 to 1768.1°C 4 counts/°CType T -270 to 400°C 15 counts/°C

Cold Junction Compensation Included in 1734-RTBCJC remote termination block

Cold Junction Compensation Range 0 to 70°

Resolution 15 bits plus sign2.5µV/cnt

Input Voltage +75mV

Absolute Accuracy1 0.1% Full Scale @ 25oCAccuracy Drift w/Temp. 30ppm/oCInput Update Rate(per module)

20ms @ Notch = 50Hz17ms @ Notch = 60Hz (default)10ms @ Notch = 100Hz8ms @ Notch = 120Hz5ms @ Notch = 200Hz4ms @ Notch = 240Hz3ms @ Notch = 300Hz3ms @ Notch = 400Hz2ms @ Notch = 480Hz

Step Response (per channel)

60ms @ Notch = 50Hz50ms @ Notch = 60Hz30ms @ Notch = 100Hz25ms @ Notch = 120Hz15ms @ Notch = 200Hz13ms @ Notch = 240Hz10ms @ Notch = 300Hz8ms @ Notch = 400Hz6ms @ Notch = 480Hz

Input Impedance 100KΩInput Resistance 1MΩConversion Type Delta SigmaCommon Mode Rejection Ratio 120dB

Normal Mode Rejection Ratio

-60dB-3dbNotch filter13.1Hz @ Notch = 50Hz15.7Hz @ Notch = 60Hz26.2Hz @ Notch = 100Hz31.4Hz @ Notch = 120Hz52.4Hz @ Notch = 200Hz62.9Hz @ Notch = 240Hz78.6Hz @ Notch = 300Hz104.8Hz @ Notch = 400Hz125.7Hz @ Notch = 380Hz

Specifications continued on next page.


A-4 Specifications

Data Format Signed integerMaximum Overload Input not overvoltage protectedCalibration Factory calibratedIndicators 1 green/red module status indicator, logic side

1 green/red network status indicator, logic side2 green/red input status indicators, logic side

Keyswitch Position 6General SpecificationsModule Location 1734-TBCJC wiring base assemblyPointbus Current 175mA @ 5V dcPower Dissipation 1.0W maximumThermal Dissipation 3.3 BTU/hr maximumIsolation Voltage 50V ac rms

Isolation between individual channelsDielectric Test 1000V rms flash for 1sDimensions Inches(Millimeters)

2.21H x 0.47W x 2.97L (56H x 12W x 75.5L)

Environmental ConditionsOperational TemperatureStorage TemperatureRelative HumidityShockOperatingNon-operatingVibration

-20 to 55°C (-4 to 131°F)-40 to 85°C (-40 to 185°F)5 to 95% noncondensing30g peak acceleration, 11(±1)ms pulse width50g peak acceleration, 11(±1)ms pulse widthTested 5g @ 10-500Hz per IEC 68-2-6

Conductors Wire Size

Category

14 AWG (2.5mm2) - 22 AWG (0.25mm2) shielded thermocouple wire3/64 inch (1.2mm) insulation maximum22

Terminal Base Screw Torque 7 pound-inches (0.6Nm)

Field Wiring Terminations 3 - Shield 6 - Input 0+ (High)4 - Input 0- (Low) 7 - Input 1+ (High)5 - Input 1- (Low)

Mass 1.22 oz/34.6 gramsAgency Certification (when product is marked)

C-UL ListedC-UL Class I, Division 2, Groups A, B, C and D certifiedUL ListedUL Class I, Division 2, Groups A, B, C and D certifiedCE marked for all applicable directives.C-Tick marked for all applicable acts.DeviceNet compatible as certified by ODVA, Inc.

1 Includes offset, gain, non-linearity and repeatability error terms.2 Use this conductor category information for planning conductor routing as described in publication

1770-4.1, “Industrial Automation Wiring and Grounding Guidelines.”


Appendix B

Safety Approvals

C-UL and UL Hazardous Location Approval Approbation d’utilisation dans des environnements dangereux par la C-UL/UL

C-UL and UL certifies products for general use as well as for use in hazardous locations. Actual C-UL and UL certification is indicated by the product label as shown below, and not by statements in any user documentation.

La C-UL/UL certifie des produits pour une utilisation générale aussi bien que pour une utilisation en environnements dangereux. La certification C-UL/UL en vigueur est indiquée par l'étiquette produit et non par des indications dans la documentation utilisateur.

Example of the C-UL and UL certification product label:

Exemple d'étiquette de certification d'un produit par la C-UL/UL :

To comply with C-UL and UL certification for use in hazardous locations, the following information becomes a part of the product literature for this C-UL and UL-certified industrial control product.

• This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D, or non-hazardous locations only.

• The products having the appropriate C-UL and UL markings (that is, Class I, Division 2, Groups A, B, C, D) are certified for use in other equipment where the suitability of combination (that is, application or use) is determined by the C-UL and UL or the local inspection office having jurisdiction

Pour satisfaire à la certification C-UL/UL en environnements dangereux, les informations suivantes font partie intégrante de la documentation des produits de commande industrielle certifiés.

• Cet équipement ne convient qu’à une utilisation en environnements de Classe I, Division 2, Groupes A, B, C, D ou non dangereux.

• Les produits portant le marquage C-UL/UL approprié (c'est-à-dire Classe I, Division 2, Groupes A, B, C, D) sont certifiés pour une utilisation avec d'autres équipements, les combinaisons d’applications et d’utilisations étant déterminées par la C-UL/UL ou le bureau local d'inspection qualifié.

Important:Due to the modular nature of a programmable control system, the product with the highest temperature rating determines the overall temperature code rating of a programmable control system in a Class I, Division 2, location. The temperature code rating is marked on the product label as shown..

Important:De par la nature modulaire des systèmes de commande programmables, le produit ayant le code de température le plus élevé détermine le code de température global du système dans un environnement de Classe I, Division 2. Le code de température est indiqué sur l'étiquette produit.

The following warnings apply to products having C-UL and UL certification for use in hazardous locations.

Les avertissements suivants s'appliquent aux produits ayant la certification C-UL/UL pour une utilisation en environnements dangereux.

WARNING: Explosion Hazard• Substitution of components may impair

suitability for Class I, Division 2.• Do not replace components unless power has

been switched off or the area is known to be non-hazardous.

• Do not disconnect equipment unless power has been switched off or the area is known to be non-hazardous.

• Do not disconnect connectors unless power has been switched off or the area is known to be non-hazardous. Secure any user-supplied connectors that mate to external circuits on this equipment by using screws, sliding latches, threaded connectors, or other means such that any connection can withstand a 15 Newton (3.4 lb.) separating force applied for a minimum of one minute.

AVERTISSEMENT : Risque d’explosion • La substitution de composants peut rendre ce

matériel inadapté à une utilisation en environnements de Classe I, Division 2.

• Couper le courant ou s'assurer que l’environnement est classé non dangereux avant de remplacer des composants.

• 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 fournis par l'utilisateur pour se brancher aux circuits externes de cet équipement à l 'aide de vis, loquets coulissants, connecteurs filetés ou autres, de sorte que les connexions résistent à une force de séparation de 15 Newtons (1,5 kg - 3,4 lb.) appliquée pendant au moins une minute.

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

C-UL and UL logo is a registered trademark of the Underwriters Laboratories.

Les sigles C-UL et UL sont des marques déposées de la Underwriters Laboratories.

C US

CL I, DIV 2GP A,B,C,D

TEMP

LISTED

C US


TEMP

LISTED


TEMP

Look for temperature code rating here.

C US

LISTEDTemperature code rating: CL I, DIV 2GP A,B,C,D

TEMP

C US

LISTEDCode de température :

Le code de température est indiqué ici


B-2 Safety Approvals


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Pub. Title/Type POINT I/O Thermocouple Input and RTD Input Modules User Manual

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Index

Aalarms, types 1-5applying sequential auto addressing 3-3

Bbase assembly, mounting 2-1

CCalibration

Module command words 4-1calibration

periodic 4-1tools 4-8

calibration - setup 4-2, 4-8calibration setup, analog input module 4-2, 4-8checking I/O defaults 3-21commisioning nodes 3-1commisioning tools, RSNetWorx 3-2commissioning a node 3-5configuration software 3-4configuration software, third party 3-3configuration, using EDS files 3-1

DDIN rail locking screw, positioning 2-3

EEDS files, configuration 3-1

Iinstallation - wiring base assembly 2-1installation, module 2-3installation, removable terminal block 2-4

Kkeyswitch position 2-3keyswitch position, 1734-IT2I 2-3keyswitch position, 1734-RTD 2-3

Mmodule

shipping statecalibration 4-1

module installation 2-3mounting base, removal 2-4mounting, base assembly 2-1

Nnode commissioning tool 3-5node setting (out of box) 3-5

Pparameter setting 3-7, 3-14positioning the keyswitch 2-3

RRSNetWorx, commisioning tool 3-2RTB, installation and removal 2-4

SSAA, sequential auto addressing 3-3sequential auto addressing, SAA 3-3sequential auto addressing, steps to apply 3-3Sequential AutoAddress 3-3Sequential Autoaddressing Example 3-3setting module parameters 3-7, 3-14setup, calibration 4-2, 4-8

Tthird party configuration software 3-3tools

calibration 4-8

Vviewing EDS files 3-21

Wwiring base assembly 2-1


2 Index


Back Cover

Publication 1734-UM004A-EN-P - July 2001 5 PN 957293-31© 2001 Rockwell International Corporation. Printed in the U.S.A.

Documents

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