1756-IT6I | Allen-Bradley ControlLogix Isolated Thermocouple/Mv Input Module 6-Pt
1756-IT6I | Allen-Bradley ControlLogix Isolated Thermocouple/Mv Input Module 6-Pt
1756-IT6I | Allen-Bradley ControlLogix Isolated Thermocouple/Mv Input Module 6-Pt
    1756-IT6I | Allen-Bradley ControlLogix Isolated Thermocouple/Mv Input Module 6-Pt
1756-IT6I | Allen-Bradley ControlLogix Isolated Thermocouple/Mv Input Module 6-Pt

1756-IT6I | Allen-Bradley ControlLogix Isolated Thermocouple/Mv Input Module 6-Pt

Part #: 1756-IT6I Manufactured by: Allen-Bradley
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$565.00
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$565.00
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Condition: New-Surplus Original Box
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Product Overview
This Allen Bradley ControlLogix Isolated therrmocouple Input Module has 6 Isolated thermocouple inputs and 1 CJC input.
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Product Description P/N: 1756-IT6I

Description / Specifications

Description 

The 1756-IT6I is a ControlLogix analog input module. It has Six (6) individually isolated Thermocouple and millivolt input channels. Compatible Thermocouple types are B, E, J, K, R, S, T, N, C, D, L (TXK/XK) with 16-bit resolution.

 

Technical Specifications 

Brand Allen-Bradley
Series ControlLogix
Part Number 1756-IT6I
Manufacturer Rockwell Automation
Module Type Analog Thermocouple Module
Inputs 6 Isolated Thermocouple, 1 CJC
No. of Inputs Six (6) Point Isolated Thermocouple Inputs
Input Resolution 16 bits -12…78 mV: 1.4 ?V/bit (typical) -12…30 mV: 0.7 ?V/bit (high resolution range)Input Range
Module Scan Time 25 ms min floating point (millivolt) 50 ms min floating point (temperature) 10 ms min integer (millivolt)(1)
Backplane Current (24Volts) 125 milliamps
Data Format Integer mode (left justified, 2s complement) IEEE 32-bit floating point
Backplane Current (5Volts) 250 milliamps
Supported Sensors B, C, E, J, K, N, R, S, T
Removeable Terminal Blocks 1756-TBNH, 1756-TBSH
Backplane Current at 24 Volts 2 milliamperes
Power Dissipation (Max) 4.3 Watts

  

 

Information About 1756-IT6I

The Allen-Bradley 1756-IT6I is a ControlLogix analog input module. This input module is exclusively used for Thermocouple and millivolt input for Temperature measurements. This module supports installation to any ControlLogix chassis whether local or remote I/O rack. It is compatible for use with any CotnrolLogix processor and communication modules.

This module is compatible for use with Thermocouple type B, E, J, K, R, S, T, N, C, D, L (TXK/XK). The valid input range for this module is -12 to 78 mV and -12 to30 mV for high resolution range. The module’s resolution is 16 bits with 1.4 ?V/bit (typical) for -12…78 mV and 0.7 ?V/bit High Resolution range for -12…30 mV. Additionally, for -12…30 mV, the Low signal and user counts are 15.80323 mV and -32768 counts while High signal and User counts are 31.396 mV and 32767 counts. For -12…78 mV, Low Signal and User counts are -15.15836 mV and -32768 counts while High signal and user counts are 79.241 mV and 32767 counts.

The module scan time is relatively fast and varies depending on the data format and signal type. For millivolt input, scan time is 25 ms min floating point while 10 ms min for integer. For Floating point format, scan time is 50 ms min.

Compatible data format is Integer mode, left justified, 2s complement and IEEE 32-bit floating point.

The Allen-Bradley 1756-IT6I is a temperature sensing analog module. It has a Six (6) individually isolated Thermocouple inputs channels. It requires either the 1756-TBNH or 1756-TBSH Removable Terminal Block (RTB), for signal wiring. It has an accuracy of +/-0.3 to 3.2 Degrees Celsius, depending on channel, for a local CJC and +/-0.3 Degrees Celsius for a remote CJC.

This module features multiple input ranges, notch filter, real-time sampling, under-range/over-range detection, digital filter, process alarms, rate alarm, 10-ohm offset, wire off detection, sensor type, temperature units, an input signal to user count conversion, and wire length calculations. This module saves the received signal to Two (2) data formats such as integer or floating-point mode. The input ranges available are -12 to 78 millivolts -12 to 30 millivolts for the high-resolution range. It has 16-bit resolution, with -12 to 78 millivolts: 1.4 microvolts per bit and the typical range and 12 to 30 millivolts: 0.7 microvolts per. The high-resolution range. It has a maximum overvoltage protection of 120 Volts AC/DC. The thermocouple types of the module are B, E, J, K, R, S, T, N, C, D, and L (TXK/XK). It has a thermocouple linearization of ITS-90.

The module has a noise rejection feature. In normal mode, it is 60 dB at 60 Hertz while in common mode, it is either 120 dB at 60 Hertz and 100 dB at 50 Hertz. It also has an open circuit detection time that guarantees a positive full-scale reading within 2 seconds. The module’s scan time is 25 ms min floating point (millivolt), 50 milliseconds floating point (temperature), and 10 ms min integer (millivolt). It has a module error of 0.5% of range and the module conversion method is Sigma-Delta. The maximum power dissipation and total backplane power are both 4.3 Watts. Thermal dissipation of the module is 14.66 BTU/hour. Channel bandwidth is 15 Hertz (-3 dB) and the input impedance is 10 M?. Current draw at 5.1 Volts is 250 milliamps and 125 milliamps at 24 Volts. The nominal gain drift with temperature is 65 ppm/Degrees Celsius, while the maximum is 80 ppm/Degrees Celsius.



Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

Frequently Asked Questions about 1756-IT6I
Question: What is the purpose of the 1756-IT6I module?
Date Update:11/06/2025
Answer:

The 1756-IT6I is used for precise temperature measurements via thermocouple and millivolt inputs. It converts analog temperature data into digital signals for ControlLogix systems. It is ideal for applications where multiple, electrically isolated temperature readings are needed. The module supports a wide range of thermocouple types and is designed for high accuracy. It provides detailed diagnostic information for each channel.

Question: What is the scan time of the 1756-IT6I?
Date Update:11/06/2025
Answer:

The scan time depends on the signal type and data format. For millivolt inputs in floating point, it is 25 ms minimum; for temperature readings, 50 ms minimum. In integer mode, millivolt scan time can be as low as 10 ms. These times enable rapid and consistent data acquisition. Fast scan times are critical for control loops with tight timing constraints.

Question: What are the power requirements of this module?
Date Update:11/06/2025
Answer:

The 1756-IT6I draws 250 mA from the 5V backplane and 125 mA from the 24V backplane. It has a maximum power dissipation of 4.3 W and thermal dissipation of 14.66 BTU/hr. These parameters must be considered when designing the power budget for a ControlLogix chassis. Proper thermal management ensures long-term reliability. Overvoltage protection is rated at 120V AC/DC.

Question: How many input channels does the 1756-IT6I have?
Date Update:11/06/2025
Answer:

The 1756-IT6I module provides six individually isolated input channels. Each channel is capable of accepting signals from thermocouples or millivolt sources. Individual isolation ensures signal integrity and minimizes interference between channels. The module also includes one channel for cold-junction compensation (CJC). This setup is well-suited for high-precision industrial measurements.

Question: Is the 1756-IT6I module still manufactured?
Date Update:11/06/2025
Answer:

No, the 1756-IT6I module has been officially discontinued by Rockwell Automation as of March 31, 2017. It is no longer available for sale and has reached the end of its product lifecycle. Rockwell recommends users to remove dependencies on this module in new designs or upgrades. Customers are encouraged to transition to a suitable functional replacement to ensure long-term support and compatibility. Always consult the latest Rockwell lifecycle documentation when planning system migrations.

IQElectro is not an authorized distributor.
QElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The 1756-IT6I is a ControlLogix analog input module. It has Six (6) individually isolated Thermocouple and millivolt input channels. Compatible Thermocouple types are B, E, J, K, R, S, T, N, C, D, L (TXK/XK) with 16-bit resolution.

 

Technical Specifications 

Brand Allen-Bradley
Series ControlLogix
Part Number 1756-IT6I
Manufacturer Rockwell Automation
Module Type Analog Thermocouple Module
Inputs 6 Isolated Thermocouple, 1 CJC
No. of Inputs Six (6) Point Isolated Thermocouple Inputs
Input Resolution 16 bits -12…78 mV: 1.4 ?V/bit (typical) -12…30 mV: 0.7 ?V/bit (high resolution range)Input Range
Module Scan Time 25 ms min floating point (millivolt) 50 ms min floating point (temperature) 10 ms min integer (millivolt)(1)
Backplane Current (24Volts) 125 milliamps
Data Format Integer mode (left justified, 2s complement) IEEE 32-bit floating point
Backplane Current (5Volts) 250 milliamps
Supported Sensors B, C, E, J, K, N, R, S, T
Removeable Terminal Blocks 1756-TBNH, 1756-TBSH
Backplane Current at 24 Volts 2 milliamperes
Power Dissipation (Max) 4.3 Watts

  

 

Information About 1756-IT6I

The Allen-Bradley 1756-IT6I is a ControlLogix analog input module. This input module is exclusively used for Thermocouple and millivolt input for Temperature measurements. This module supports installation to any ControlLogix chassis whether local or remote I/O rack. It is compatible for use with any CotnrolLogix processor and communication modules.

This module is compatible for use with Thermocouple type B, E, J, K, R, S, T, N, C, D, L (TXK/XK). The valid input range for this module is -12 to 78 mV and -12 to30 mV for high resolution range. The module’s resolution is 16 bits with 1.4 ?V/bit (typical) for -12…78 mV and 0.7 ?V/bit High Resolution range for -12…30 mV. Additionally, for -12…30 mV, the Low signal and user counts are 15.80323 mV and -32768 counts while High signal and User counts are 31.396 mV and 32767 counts. For -12…78 mV, Low Signal and User counts are -15.15836 mV and -32768 counts while High signal and user counts are 79.241 mV and 32767 counts.

The module scan time is relatively fast and varies depending on the data format and signal type. For millivolt input, scan time is 25 ms min floating point while 10 ms min for integer. For Floating point format, scan time is 50 ms min.

Compatible data format is Integer mode, left justified, 2s complement and IEEE 32-bit floating point.

The Allen-Bradley 1756-IT6I is a temperature sensing analog module. It has a Six (6) individually isolated Thermocouple inputs channels. It requires either the 1756-TBNH or 1756-TBSH Removable Terminal Block (RTB), for signal wiring. It has an accuracy of +/-0.3 to 3.2 Degrees Celsius, depending on channel, for a local CJC and +/-0.3 Degrees Celsius for a remote CJC.

This module features multiple input ranges, notch filter, real-time sampling, under-range/over-range detection, digital filter, process alarms, rate alarm, 10-ohm offset, wire off detection, sensor type, temperature units, an input signal to user count conversion, and wire length calculations. This module saves the received signal to Two (2) data formats such as integer or floating-point mode. The input ranges available are -12 to 78 millivolts -12 to 30 millivolts for the high-resolution range. It has 16-bit resolution, with -12 to 78 millivolts: 1.4 microvolts per bit and the typical range and 12 to 30 millivolts: 0.7 microvolts per. The high-resolution range. It has a maximum overvoltage protection of 120 Volts AC/DC. The thermocouple types of the module are B, E, J, K, R, S, T, N, C, D, and L (TXK/XK). It has a thermocouple linearization of ITS-90.

The module has a noise rejection feature. In normal mode, it is 60 dB at 60 Hertz while in common mode, it is either 120 dB at 60 Hertz and 100 dB at 50 Hertz. It also has an open circuit detection time that guarantees a positive full-scale reading within 2 seconds. The module’s scan time is 25 ms min floating point (millivolt), 50 milliseconds floating point (temperature), and 10 ms min integer (millivolt). It has a module error of 0.5% of range and the module conversion method is Sigma-Delta. The maximum power dissipation and total backplane power are both 4.3 Watts. Thermal dissipation of the module is 14.66 BTU/hour. Channel bandwidth is 15 Hertz (-3 dB) and the input impedance is 10 M?. Current draw at 5.1 Volts is 250 milliamps and 125 milliamps at 24 Volts. The nominal gain drift with temperature is 65 ppm/Degrees Celsius, while the maximum is 80 ppm/Degrees Celsius.



Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

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