Allen-Bradley 1756-OF8IH | 8-Channel Analog Output Module – Isolated, HART, ControlLogix

Overview

The Allen-Bradley 1756-OF8IH is a ControlLogix analog output module featuring 8 isolated channels with support for HART communication. Designed for high-performance analog signal control, this module delivers precise output for demanding industrial automation environments, including process control and advanced instrumentation systems.

With each channel electrically isolated, the 1756-OF8IH ensures signal integrity and supports HART-enabled field devices for additional diagnostics and configuration.

Key Features

• Channels: 8 analog outputs (individually isolated)

• Protocol Support: HART-enabled (Highway Addressable Remote Transducer)

• Platform: ControlLogix

• Resolution: 16-bit

• Signal Types: mA output with HART (e.g., 4–20 mA)

• Advanced Diagnostics – Through HART communication

• Backplane Communication – Integrated with Logix 5000 controllers

Technical Specifications

• Model: 1756-OF8IH

• Brand: Allen-Bradley / Rockwell Automation

• Channels: 8 isolated analog outputs

• Output Type: Current (mA)

• HART Communication: Enabled per channel

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

• Resolution: 16-bit

• Backplane Current (5.1V): Approx. 150 mA

• Backplane Current (24V): Approx. 200 mA

• Operating Temperature: 0°C to +60°C

• Mounting: ControlLogix chassis

Applications

• Process Control Systems – Precise analog control with field diagnostics

• Industrial Automation – HART-compatible output for instrumentation

• Plant Monitoring – Integration with intelligent transmitters

• Oil & Gas, Water Treatment – Where isolation and HART are required

Why Choose the 1756-OF8IH?

• 8 individually isolated outputs for maximum signal integrity

• Built-in HART communication for advanced device interaction

• Reliable integration with ControlLogix PLCs

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