Allen-Bradley 1756-OF4 ControlLogix 4-Point Analog Output Module

Allen-Bradley 1756-OF4 ControlLogix 4-Point Analog Output Module

Price range: $398.97 through $731.91

The Allen-Bradley 1756-OF4 is a 4-point non-isolated analog output module providing high-speed ±10V voltage or 0-20mA current control signals for proportional actuators and drives. It converts digital controller tags into precise continuous analog outputs to modulate variable speed drives, control valves, and positioning units. Each output channel features programmable digital scaling and configurable fault states to preserve system safety during unexpected signal loss. Its single-slot chassis footprint supports Removal and Insertion Under Power (RIUP) for simplified maintenance and minimal process downtime.

$398.97
$683.55
$731.91
SKU: 1756-OF4 Category: Brand:

Description

  • Part Number: 1756-OF4
  • Manufacturer: Allen-Bradley
  • Type: 4-Point Analog Output Module
  • Series: ControlLogix 1756 Series
  • Application: Analog Process Control & Final Control Element Drive
  • Size // Rating: 4 Single-Ended Outputs, Voltage/Current Support
  • Connection Type: 20-Pin Removable Terminal Block (RTB)
  • Compatibility: Allen-Bradley ControlLogix 1756 System

TCI is not an authorized Allen-Bradley distributor.

Documentation

No documentation is available for this product.

Warranty Coverage

This product is backed by a TCI Supply 1 year Warranty.

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Description

The Allen-Bradley 1756-OF4 is a compact 4-channel analog output module designed for the ControlLogix 1756 control system. It converts internal controller data into continuous ±10V DC voltage or 0–20 mA / 4–20 mA DC current signals, providing reliable analog control for industrial automation processes.

Engineered for responsive analog loops, the 1756-OF4 delivers 15-bit resolution for precise adjustment of field devices such as variable frequency drives (VFDs), proportional hydraulic valves, and dampers. Integrators can easily set channel-specific operational parameters, clamp limits, and fail-safe states using Studio 5000 or RSLogix 5000 software to ensure predictable equipment behavior if network communications are lost.

Installed directly into any standard ControlLogix chassis slot, the module connects to field wiring using a 20-pin Removable Terminal Block (1756-TBNH or 1756-TBSH). With full Removal and Insertion Under Power (RIUP) support, maintenance teams can replace the module without turning off chassis power or interrupting adjacent control hardware.

Frequently Asked Questions

What is the primary function of the Allen-Bradley 1756-OF4?

The 1756-OF4 converts digital signal values from a ControlLogix processor into 4 channels of analog voltage or current to control devices like VFDs and valves.

What output ranges does the 1756-OF4 support?

It supports software-configurable voltage ranges of ±10V DC and current output ranges of 0–20 mA or 4–20 mA DC.

What digital resolution does the 1756-OF4 offer?

The module features 15-bit digital-to-analog conversion resolution.

Which Removable Terminal Block (RTB) is required for the 1756-OF4?

Which Removable Terminal Block (RTB) is required for the 1756-OF4?

How does the 1756-OF4 handle channel behavior during controller faults?

Through programming software, each channel can be configured to hold its last state or switch to a user-defined safe value during a controller or network fault.

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