Allen-Bradley 1756-IF8H – HART analog input module

The Allen-Bradley 1756-IF8H is an analog input module designed for the ControlLogix platform with integrated HART communication support. It provides 8 input channels for acquiring analog signals, typically 4–20 mA, from field instruments such as transmitters, sensors and process devices.

The module enables both analog signal measurement and digital HART communication, allowing access to additional diagnostic and configuration data from smart field devices. It is widely used in process automation systems where precise measurement and device monitoring are required.

Technical overview:
• Series: ControlLogix
• Module type: HART analog input module
• Model: 1756-IF8H
• Number of inputs: 8 channels
• Input signal: 4–20 mA (analog current)
• HART support: yes, integrated HART communication
• Resolution: high-resolution analog measurement
• Isolation: channel-to-channel and system isolation
• Backplane current: approx. 300 mA @ 5.1 V DC
• Power dissipation: approx. 6 W
• Operating temperature: 0°C to +60°C
• Mounting: ControlLogix chassis

Typical applications:
• Process automation systems
• Flow, pressure and temperature measurement
• HART field device integration
• Oil and gas industry
• Chemical and process industries

About the manufacturer:
Allen-Bradley, part of Rockwell Automation, is a global leader in industrial automation technologies. The company develops PLC systems, industrial communication networks, motion control solutions and process automation equipment used worldwide.