Allen-Bradley 1738-IR2M12 Operation manual

Installation Instructions
ArmorPOINT RTD and Thermocouple
Input Modules
Catalog numbers 1738-IR2M12, 1738-IT2IM12, Series A
Table of Contents
Topic Page
Important User Information 2
Environment and Enclosure 3
Preventing Electrostatic Discharge 3
About the Module 4
Mount the I/O Base 5
Install the Module 6
Remove the Module from the Mounting Base 6
Wire the Module 7
Communicate with the Module 8
Interpret Status Indicators 10
Specifications 12

2ArmorPOINT RTD and Thermocouple Input Modules
Publication 1738-IN005B-EN-E - January 2013
Important User Information
Solid-state equipment has operational characteristics differing from those of electromechanical
equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls
(Publication SGI-1.1 available from your local Rockwell Automation sales office or online at
http://www.rockwellautomation.com/literature/) describes some important differences between
solid-state equipment and hard-wired electromechanical devices. Because of this difference, and also
because of the wide variety of uses for solid-state equipment, all persons responsible for applying this
equipment must satisfy themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages
resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the
many variables and requirements associated with any particular installation, Rockwell Automation, Inc.
cannot assume responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits,
equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell
Automation, Inc., is prohibited.
Throughout this manual, 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.

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Environment and Enclosure
Preventing Electrostatic Discharge
ATTENTION: This equipment is intended for use 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 enclosed equipment. It should not require
additional system enclosure when used in locations consistent with the
enclosure type ratings stated in the Specifications section of this publication.
Subsequent sections of this publication may contain additional information
regarding specific enclosure type ratings, beyond what this product provides,
that are required to comply with certain product safety certifications.
In addition to this publication, see:
• Industrial Automation Wiring and Grounding Guidelines, Rockwell
Automation publication 1770-4.1, for additional installation requirements.
• NEMA Standard 250 and IEC 60529, as applicable, for explanations of the
degrees of protection provided by different types of enclosure.
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.

4ArmorPOINT RTD and Thermocouple Input Modules
Publication 1738-IN005B-EN-E - January 2013
About the Module
The ArmorPOINT™ I/O family consists of modular I/O modules. The sealed IP67
housing of these modules requires no enclosure. Note that environmental requirements
other than IP67 may require an additional appropriate housing. I/O connectors are sealed
M12 (micro) style. The mounting base ships with the module. The 1738-IR2M12 module
is shown here.
ArmorPOINT RTD and Thermocouple Input Module
Description Description
1Connector M12-A 3LED indicators
2Connector M12-B
MOD
NET
1738-IR2M12/A
RTD (Ohms) In
01
RTD 0
RTD 1
12
3
43780

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Mount the I/O Base
Mount the I/O base on a wall or panel, using the screw holes provided in the base.
Mounting Diagram for ArmorPOINT Base with Adapter
Follow the instructions to install the mounting base.
1. Lay out the required points as shown above in the drilling dimension diagram.
2. Drill the necessary holes for M4 (#8) machine or self-tapping screws.
3. Mount the base using M4 (#8) screws.
4. Ground the system using the ground lug connection. The ground lug connection
is also a mounting hole.
Mounting Base
IMPORTANT
The module must be mounted on a grounded metal mounting plate or other
conductive surface.
102
(4.02)
56
(2.2)
46.25 (1.8)
51.9 (2)
Adapter
20.1 (0.8)
43769
Millimeters
(Inches) 51.9 (2) 51.9 (2)
20.1 (0.8)
Keyswitch
Ground lug connection
Latching mechanism 43675

6ArmorPOINT RTD and Thermocouple Input Modules
Publication 1738-IN005B-EN-E - January 2013
Install the Module
Follow the instructions to install the ArmorPOINT input module.
1. Using a bladed screwdriver, rotate the keyswitch on the mounting base clockwise
until the number 6 aligns with the notch in the base.
2. Position the module vertically above the mounting base. The module bridges
two bases.
3. Push the module down until it engages the latching mechanism. You hear a
clicking sound when the module is properly engaged. The locking mechanism
locks the module to the base.
Remove the Module from the Mounting Base
Follow the instructions to remove the module from the mounting base.
1. Insert a flat blade screwdriver into the slot of the orange latching mechanism.
2. Push the screwdriver toward the I/O module to disengage the latch. The module
lifts up off the base.
3. Pull the module off the base.
MOD
NET
1738-IR2M12/A
RTD (Ohms) In
01
RTD 1
RTD 0
Module bridges two bases.
43782

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Wire the Module
Follow the wiring instructions for the ArmorPOINT input modules.
1738-IR2M12
1738-IT2IM12
IMPORTANT
Analog modules have earth grounded metal rings. This should be
considered when choosing shielded cables and grounding techniques.
ATTENTION: Make sure all connectors and caps are securely tightened to
properly seal the connections against leaks and maintain IP67 requirements.
(View into connector)
Pin 1 No connect
Pin 2 Input 0A (M12-A)
Input 1A (M12-B)
Pin 3 Input 0C (M12-A)
Input 1C (M12-B)
Pin 4 Input 0B (M12-A)
Input 1B (M12-B)
Pin 5 No connect
43664
2
5
1
4
3
(View into connector)
Pin 1 CJC +
Pin 2 TC 0 + (M12-A)
TC 1 + (M12-B)
Pin 3 CJC -
Pin 4 TC 0 - (M12-A)
TC 1 - (M12-B)
Pin 5 No connect
43664
2
5
1
4
3

8ArmorPOINT RTD and Thermocouple Input Modules
Publication 1738-IN005B-EN-E - January 2013
Communicate with the Module
I/O messages are sent to (consumed) and received from (produced) the ArmorPOINT
I/O modules. These messages are mapped onto the processor’s memory. The
ArmorPOINT RTD I/O input module produces 6 Bytes of input data (scanner Rx –
status) and fault status data. The ArmorPOINT thermocouple I/O input module
produces 8 Bytes of input data (scanner Rx – status) and fault status data. They do not
consume I/O data (scanner Tx).
Default Data Map – 1738-IR2M12
Message size: 6 Bytes
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
Input channel 1 high byte Input channel 1 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: OR = Overrange; 0 = No error, 1 = Fault
UR = Underrange; 0 = No error, 1 = Fault
HHA = High/High Alarm; 0 = No error, 1 = Fault
LLA = Low/Low Alarm; 0 = No error, 1 = Fault
HA = High Alarm; 0 = No error, 1 = Fault
LA = Low Alarm; 0 = No error, 1 = Fault
CM = Calibration Mode; 0 = Normal, 1 = Calibration mode
CF = Channel Fault Status; 0 = No error, 1 = Fault

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Default Data Map – 1738-IT2IM12
Message size: 6 Bytes
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
Input channel 1 high byte Input channel 1 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 channels 0 and 1)
Consumes
(scanner Tx) No consumed data
Where: OR = Overrange; 0 = No error, 1 = Fault
UR = Underrange; 0 = No error, 1 = Fault
HHA = High/High Alarm; 0 = No error, 1 = Fault
LLA = Low/Low Alarm; 0 = No error, 1 = Fault
HA = High Alarm; 0 = No error, 1 = Fault
LA = Low Alarm; 0 = No error, 1 = Fault
CM = Calibration Mode; 0 = Normal, 1 = Calibration mode
CF = Channel Fault Status; 0 = No error, 1 = Fault

10 ArmorPOINT RTD and Thermocouple Input Modules
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Interpret Status Indicators
This module has the following indicators:
• Adapter, DeviceNet and POINTBus status indicators
• System and Adapter power indicators
• Individual I/O status indicators for inputs and outputs
Indicator Status for Modules
Status Description
Module status Off No power applied to device.
Green Device operating normally.
Flashing green Device needs commissioning due to missing, incomplete, or
incorrect configuration.
Flashing red Recoverable fault.
Red Unrecoverable fault – may require device replacement.
Flashing red/green Device is in self-test.
MOD
NET
1738-IR2M12/A
RTD (Ohms) In
01
RTD 0
RTD 1
I/O status indicator
43780
Network status indicator
Module status indicator
1738-IR2M12

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Network status Off Device is not online:
- Device has not completed dup_MAC-id test.
- Device not powered – check module status indicator.
Flashing green Device is online but has no connections in the established state.
Green Device is online and has connections in the established state.
Flashing red One or more I/O connections are in timed-out state.
Red Critical link failure – failed communication device. Device detected
error that prevents it from communicating on the network. Possible
duplicate MAC ID or baud rate mismatch.
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 Identity Communication
Faulted Request – long protocol message.
I/O 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).
Indicator Status for Modules
Status Description

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Specifications
ArmorPOINT RTD and Thermocouple Input Modules –
1738-IR2M12, 1738-IT2IM12
Attribute Value
Inputs per module 1738-IR2M12 – 2 single-ended, nonisolated
1738-IT2IM12 – 2 differential, individually isolated
Resolution 1738-IR2M12 – 16 bits, 9.5 mV/cnt, 0.03 °C/cnt (Pt385 @ 25 °)
1738-IT2IM12 – 15 bits plus sign, 2.5 mV/cnt
Thermocouple type (and
resolution average over span) 1738-IT2IM12 only
Sensor Range Resolution (average over span)
Type B 30…1820 °C 3 counts/°C
Type C 0…2315 °C 6 counts/°C
Type E -270…1000 °C 24 counts/°C
Type J -210…1200 °C 21 counts/°C
Type K -270…1372 °C 13 counts/°C
Type N -270…1300 °C 11 counts/°C
Type R -50…1768.1 °C 4 counts/°C
Type S -50…1768.1 °C 4 counts/°C
Type T -270…400 °C 15 counts/°C
RTD sensors supported 1738-IR2M12 only
100 ΩPt α= 0.00385 Euro (-200…870 °C)
200 ΩPt α= 0.00385 Euro (-200…630 °C)
100 ΩPt α= 0.003916 U.S. (-200…630 °C)
200 ΩPt α= 0.003916 U.S. (-200…630 °C)
10 ΩCu α= 0.00427 (-200…260 °C)
100 ΩNi α= 0.00618 (-60…250 °C)
120 ΩNi α= 0.00672 (-60…250 °C)
120 ΩNi α= 0.00618 (-60…250 °C)
Cold junction
compensation range 1738-IT2IM12 – 0…70 °C
Input range 1738-IR2M12 – 0…600 Ω
1738-IT2IM12 – ±75 mV
Absolute accuracy(1) 0.1% full scale @ 25 °C
Accuracy drift w/temp 30 ppm/°C

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Input update rate (per module) 1738-IR2M12
40 ms @ Notch = 50 Hz
33 ms @ Notch = 60 Hz (default)
20 ms @ Notch = 100 Hz
17 ms @ Notch = 120 Hz
10 ms @ Notch = 200 Hz
8 ms @ Notch = 240 Hz
7 ms @ Notch = 300 Hz
5 ms @ Notch = 400 Hz
4 ms @ Notch = 480 Hz
1738-IT2IM12
20 ms @ Notch = 50 Hz
17 ms @ Notch = 60 Hz (default)
10 ms @ Notch = 100 Hz
8 ms @ Notch = 120 Hz
5 ms @ Notch = 200 Hz
4 ms @ Notch = 240 Hz
3 ms @ Notch = 300 Hz
3 ms @ Notch = 400 Hz
2 ms @ Notch = 480 Hz
Step response (per channel) 60 ms @ Notch = 50 Hz
50 ms @ Notch = 60 Hz
30 ms @ Notch = 100 Hz
25 ms @ Notch = 120 Hz
15 ms @ Notch = 200 Hz
13 ms @ Notch = 240 Hz
10 ms @ Notch = 300 Hz
8 ms @ Notch = 400 Hz
6 ms @ Notch = 480 Hz
Input resistance 1738-IT2IM12 only – 1 MΩ
Input impedance 1738-IT2IM12 only – 100 KΩ
Conversion type Delta Sigma
Common mode rejection ratio 120 dB
Normal mode rejection ratio 100 dB
-3 db
Notch filter
13.1 Hz @ Notch = 50 Hz
15.7 Hz @ Notch = 60 Hz
26.2 Hz @ Notch = 100 Hz
31.4 Hz @ Notch = 120 Hz
52.4 Hz @ Notch = 200 Hz
62.9 Hz @ Notch = 240 Hz
78.6 Hz @ Notch = 300 Hz
104.8 Hz @ Notch = 400 Hz
125.7 Hz @ Notch = 380 Hz
Data format Signed integer
Maximum overload 1738-IR2M12 – No input protection
1738-IT2IM12 – Input not overvoltage protected
(1) Includes offset, gain, non-linearity and repeatability error terms
ArmorPOINT RTD and Thermocouple Input Modules –
1738-IR2M12, 1738-IT2IM12
Attribute Value

14 ArmorPOINT RTD and Thermocouple Input Modules
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General Specifications
Attribute Value
Mounting base screw torque M4 (#8) screw,
0.85 Nm (7.5 lb-in.) in aluminum, 1.8 Nm (16 lb-in.) in steel
Calibration Factory-calibrated
POINTBus current 1738-IR2 – 220 mA @ 5V DC
1738-IT2I – 175 mA @ 5V DC
Power dissipation, max 1.0 W
Thermal dissipation, max 3.3 BTU/hr
Isolation voltage Tested at 50V rms (1738-IT2I has isolation between individual
channels)
Dielectric test 1000V rms flash for 1s
External DC power No external power required
LED indicators 1 green/red – module status indicator, logic side
1 green/red – network status indicator, logic side
2 green/red – input status indicators, logic side
Dimensions, HxWxD 31.75 x 66.80 x 107.95 mm
(1.25 x 2.63 x 4.25 in.)
Weight 0.289 kg (0.637 lb)
Enclosure type rating Meets IP65/66/67 (when marked)
Wiring category(1) 1 – on signal ports
Keyswitch position 6
(1) Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and
Grounding Guidelines, publication 1770-4.1.
Environmental Specifications
Attribute Value
Temperature, operating IEC 60068-2-1 (Test Ad, Operating Cold),
IEC 60068-2-2 (Test Bd, Operating Dry Heat),
IEC 60068-2-14 (Test Nb, Operating Thermal Shock):
-20…60 °C (-4…140 °F)
Temperature, storage IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold),
IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat),
-40…85 °C (-40…185 °F)
Relative humidity IEC 60068-2-30 (Test Db, Unpackaged Nonoperating Damp Heat):
5…95% noncondensing

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Vibration IEC60068-2-6 (Test Fc, Operating):
5 g @ 10…500 Hz
Shock, operating IEC60068-2-27 (Test Ea, Unpackaged Shock):
30 g
Shock, nonoperating IEC60068-2-27 (Test Ea, Unpackaged Shock):
50 g
Emissions Emissions CSPR 11:
Group 1, Class A
ESD immunity IEC 61000-4-2:
6 kV contact discharges
8 kV air discharges
Radiated RF immunity IEC 61000-4-3:
10V/m with 1 kHz sine-wave 80% AM @ 30 MHz…1000 MHz
10V/m with 200 Hz 50% pulse 100% AM @ 900 Mhz
EFT/B immunity IEC 61000-4-4:
±3 kV @ 5 kHz on signal ports
Surge transient immunity IEC 61000-4-5:
±2 kV line-earth(CM) on shielded ports
Conducted RF immunity IEC 61000-4-6:
10Vrms with 1kHz sine-wave 80% AM @ 150 kHz…80 MHz
Certifications
Certification (when
product is marked)(1) Value
c-UL-us UL-listed Industrial Control Equipment, certified for US and Canada
CE European Union 89/336/EEC EMC Directive, compliant with:
EN 61000-6-4; Industrial Emissions
EN 50082-2; Industrial Immunity
EN 61326; Meas./Control/Lab., Industrial Requirements
EN 61000-6-2; Industrial Immunity
C-Tick Australian Radiocommunications Act, compliant with:
AS/NZS CISPR 11; Industrial Emissions
(1) See the Product Certification link at http://www.ab.com for Declaration of Conformity, Certificates, and other
certification details.
Environmental Specifications
Attribute Value

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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.
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Publication 1738-IN005B-EN-E - January 2013
Supersedes Publication 1738-IN005A-EN-E - June 2004 Copyright © 2013 Rockwell Automation, Inc. All rights reserved.
Allen-Bradley, Rockwell Automation, ArmorPOINT, and TechConnect are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.