Analog Thermocouple Module Allen-Bradley 1756-IT6I2 ControlLogix

Product Overview

The Allen-Bradley 1756-IT6I2 is a high-performance analog thermocouple module. It belongs to the ControlLogix series. This module provides six isolated thermocouple inputs. It also includes two cold junction compensation (CJC) sensors. The 1756-IT6I2 delivers precise temperature measurements. It supports multiple thermocouple types. These include B, C, D, E, J, K, L, N, R, S, and T. The module uses ITS-90 linearization for accuracy. It offers a 16-bit input resolution. You can choose between millivolt and temperature data formats. The module supports both integer and floating-point modes. This makes it very flexible for various applications. It also features a digital filter for noise reduction. The 1756-IT6I2 ensures reliable operation in harsh industrial environments.

Application Scenarios

The 1756-IT6I2 module is ideal for process control. It works well in temperature monitoring systems. Use it in chemical plants and refineries. It is suitable for power generation facilities. The module handles furnace and kiln control. It is also used in food and beverage processing. The 1756-IT6I2 fits into pharmaceutical manufacturing. It supports environmental chamber monitoring. The module is great for plastic and rubber molding. It also works in metal heat treatment. The isolated inputs protect against ground loops. This ensures data integrity in noisy settings. The module is a core part of Rockwell Automation systems.

Technical Specifications

The 1756-IT6I2 has a 25 ms minimum scan time for millivolt floating point. It scans at 50 ms for temperature floating point. The integer mode scans at 10 ms for millivolt. The module draws 200 mA from the 5V backplane. It draws 120 mA from the 24V backplane. Power dissipation is 4.6 Watts maximum. The input impedance is greater than 10 MΩ. Overvoltage protection reaches 120 Volts AC/DC. The CJC sensor accuracy is +/- 0.3 degrees Celsius. The module offers a 60 dB noise rejection at 60 Hz. It has a settling time greater than 80 ms. The channel bandwidth is 15 Hz. The thermal dissipation is 15.7 BTU/hour. Open circuit detection takes 2 seconds. The module uses a removable terminal block. Compatible blocks are 1756-TBNH and 1756-TBSH.

Installation & Maintenance Guide

Install the 1756-IT6I2 in a ControlLogix chassis. Ensure the backplane power is off before insertion. Align the module with the guides and push firmly. Secure it with the locking screws. Connect the thermocouple wires to the terminal block. Use the correct 1756-TBNH or 1756-TBSH block. Tighten the screws to the specified torque. Do not overtighten the connections. Configure the module using Studio 5000 software. Set the sensor type and temperature units. Enable the digital filter if needed. Perform a wire-off test after installation. Regularly check the CJC sensors for accuracy. Keep the module free from dust and moisture. Replace the module only with the same model.

Packing List

1 x Allen-Bradley 1756-IT6I2 Analog Thermocouple Module
1 x Removable Terminal Block (1756-TBNH or 1756-TBSH)
1 x Installation Instructions Manual
1 x Product Documentation CD (if applicable)
Note: The module is shipped in an anti-static bag.