The Allen-Bradley 1756-IT6I2 is a specialized analog input module designed for the ControlLogix platform. This module provides 6 channels of enhanced, isolated thermocouple input, engineered for high-precision temperature monitoring in industrial automation environments. Please note that this unit has been officially discontinued by the manufacturer as of March 31, 2017.
Features
6 isolated thermocouple input channels for reliable signal processing.
Enhanced input ranges covering -12 to 78 mV and -12 to 30 mV.
Precision resolution of 1.4 uV/bit for sensitive temperature sensing.
Compatible with 1756-TBNH and 1756-TBSH removable terminal blocks for efficient field wiring.
Applications
This module is typically utilized in process control systems where galvanic isolation between channels is required to prevent ground loops and signal interference. It is well-suited for furnace monitoring, chemical processing, and other high-accuracy thermal management applications within a ControlLogix rack architecture.
Technical Specifications
Product Model
1756-IT6I2
Module Type
Enhanced Isolated Thermocouple Input
Input Channels
6
Resolution
16-bit
Input Range
-12 to 78 mV / -12 to 30 mV
Backplane Current (5V)
200 mA
Backplane Current (24V)
150 mA
Max Power Dissipation
4.6 Watts
Compatible Terminal Blocks
1756-TBNH, 1756-TBSH
Installation Guidelines
Ensure the ControlLogix chassis is powered down before installing or removing the module to prevent electrical damage.
Handle the module by the edges and avoid touching the backplane connector pins to prevent ESD damage.
Use shielded thermocouple extension wire to minimize electromagnetic interference (EMI) in industrial environments.
Verify that the removable terminal block is fully seated and securely locked onto the module front.
Maintain adequate spacing within the chassis to ensure proper airflow and heat dissipation, keeping within the 4.6W power dissipation limit.
FAQ
Is the 1756-IT6I2 still in production? No, this module was discontinued by Allen-Bradley on March 31, 2017. We supply these units as part of our inventory of legacy and replacement automation components.
What terminal blocks are compatible with this module? The 1756-IT6I2 is designed to be used with 1756-TBNH (standard) or 1756-TBSH (spring-clamp) removable terminal blocks.
Does this module provide isolation? Yes, the 1756-IT6I2 is an enhanced isolated module, which provides electrical isolation between the input channels and the backplane to ensure signal integrity.
