Allen-Bradley 1756-IF8IH | Isolated Analog Input Module with HART Protocol (8-Channel, Voltage/Current)

Overview

The Allen-Bradley 1756-IF8IH is a premium analog input module for ControlLogix systems, offering 8 isolated voltage or current inputs and full HART communication support. It supports HART Protocol versions 5, 6, and 7 with read/write capability, making it ideal for advanced process control and smart instrumentation integration.

With full isolation, high-resolution signal processing, and HART capabilities per channel, the 1756-IF8IH simplifies commissioning, diagnostics, and monitoring — all in a single, space-saving module.

Key Features

• 8 Isolated Analog Input Channels – Each channel supports voltage or current input

• Supports HART 5, 6, and 7 – Full read/write capability per channel

• Voltage & Current Ranges – ±10V, 0–20 mA, 4–20 mA

• Fully Isolated Channels – Ensures signal integrity and safety

• Channel-by-Channel Configuration – Flexible setup for mixed signals

• Real-Time HART Communication – Secondary variables, device status, and diagnostics

• Studio 5000 Integrated – Streamlined configuration and data access

Technical Specifications

• Catalog Number: 1756-IF8IH

• Input Channels: 8 isolated

• Signal Types: Voltage (±10V), Current (0–20 mA, 4–20 mA)

• Resolution: High-resolution analog conversion (typically 24-bit)

• HART Protocol Support: Versions 5, 6, and 7 (read/write)

• Input Isolation: Channel-to-channel and channel-to-backplane

• Backplane Current: ~400 mA @ 5.1V DC

• Connector: 36-pin RTB (sold separately)

• Operating Temperature: 0°C to +60°C

• Mounting: ControlLogix chassis

• Compatible Software: Studio 5000 Logix Designer

Applications

• Process Automation – Oil & gas, chemical, food & beverage, water treatment

• Smart Instrumentation – Integrate and configure HART-enabled transmitters

• Advanced Diagnostics – Retrieve digital variables and health status from field devices

• High-Accuracy Analog Monitoring – Ideal for control systems requiring precision

Why Choose the 1756-IF8IH?

• Fully isolated, high-resolution analog inputs with HART support

• Reduces wiring and hardware by combining analog and HART functions

• Enables full digital integration with modern field instruments

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