1756-IRT8IK Input Module - Allen-Bradley

Allen-Bradley 1756-IRT8IK ControlLogix RTD/Thermocouple Input Module

The 1756-IRT8IK by Rockwell Automation is an 8-channel isolated analog input module for high-precision temperature measurement. It supports RTDs and thermocouples with 24-bit resolution, cold junction compensation (CJC), and advanced diagnostics. Ideal for industrial automation, this module saves space and cost while delivering fast, accurate performance.

TECHNICAL DATA

• Brand: Allen-Bradley (Rockwell Automation)
• Model: 1756-IRT8IK (Full suffix: IRT8IK – K indicates enhanced packaging or region-specific version)
• Inputs: 8 isolated channels (RTD/thermocouple/millivolt)
• Resolution: 24-bit
• Isolation: 250V continuous
• Power: 5.1V (200mA) / 24V (150mA)
• Accuracy: ±0.3°C (CJC)
• Sampling: Sync/RPI-based
• Features: Wire-off detection, notch filter, alarms

KEY FEATURES

• Flexible inputs: Mix RTDs, thermocouples, or millivolt signals.
• Dual CJC sensors: Remote/local accuracy ±0.3°C.
• Self-calibration: Automatic lead resistance correction.
• Space-saving: Replaces multiple modules.

INSTALLATION & COMPATIBILITY

• Terminal block: Requires 1756-TBS6H or 1756-TBCH (36-pin).
• Backplane current: 2mA @24V.
• Compatible with: ControlLogix chassis.

APPLICATIONS

• Process control (e.g., chemical reactors).
• HVAC monitoring.
• Food production temperature logging.

PACKAGE INCLUDES

• 1756-IRT8IK module.
• Documentation (datasheet, manual).

Shipping: FedEx, UPS, DHL worldwide.