Allen-Bradley

Allen-Bradley 1756-OA8 ControlLogix Digital AC Output Module

SKU 1756-OA8

Disponibile
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Allen-Bradley
  • Product No.: 1756-OA8
  • Origin United States
  • Product Type: Digital Output Modules
  • Payment: T/T, Western Union
  • Weight: 1.0 kg
  • Shipping port: Xiamen
  • Warranty: 12 months

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Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Allen-Bradley 1756-OA8 ControlLogix Digital AC Output Module

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Product Description

Description

The Allen-Bradley 1756-OA8 is a high-performance ControlLogix digital AC output module designed for demanding industrial automation environments. Engineered by Rockwell Automation, this module delivers reliable discrete control with 8 independent AC output channels grouped to support flexible voltage distribution across different levels within the same physical module.

Part of the scalable ControlLogix platform, the 1756-OA8 integrates seamlessly into standard 1756 chassis backplanes. It utilizes advanced Producer-Consumer technology to share output status efficiently across controllers and supports per-point configurable states for both fault and program modes, ensuring predictable machinery behavior during unexpected communication losses or controller faults.

Features

  • 8 independent AC output channels grouped into 4 points per group
  • Supports 120/240V AC nominal voltage categories (50/60 Hz)
  • Configurable hold-last-state or user-defined states for both fault and program modes per point
  • Requires a compatible Allen-Bradley Removable Terminal Block (RTB) such as the 1756-TBNH or 1756-TBSH for field-side wiring connections
  • Direct backplane power interface drawing minimal current for optimized power budgeting
  • Advanced Producer-Consumer communication architecture for high-speed data exchange

Applications

  • Automotive manufacturing assembly lines
  • Continuous process control and material handling systems
  • Packaging and converting machinery
  • Power generation and utility distribution switching
  • Heavy industrial discrete automation cells

Technical Specifications

Parameter Specification
Manufacturer Allen-Bradley / Rockwell Automation
Product Type Digital AC Output Module
Catalog Number 1756-OA8
Module Family ControlLogix (1756)
Outputs per Module 8 outputs (4 points per group)
Voltage Category 120/240V AC (50/60 Hz)
Operating Voltage Range 79 to 265V AC
Pilot Duty Rating 2A pilot duty
Max Current per Point 2A at 60 degC (linear derating)
Max Current per Module 5A at 30 degC; 4A at 60 degC
Backplane Power Draw 200 mA at 5.1V DC; 2 mA at 24V DC (1.07W total)
Required Terminal Block 1756-TBNH or 1756-TBSH (Ordered Separately)
Country of Origin United States

Connections / Interfaces

The module features a standard 1756 backplane connector on the rear that mounts directly into any slot of a ControlLogix chassis to receive power and communication data. Field-side wiring connects via a removable terminal block (RTB) that plugs into the front of the unit without disturbing field wiring during module replacement.

Installation Guidelines

Mount the 1756-OA8 module into any available slot within a standard 1756 ControlLogix chassis by sliding it along the chassis guide rails until firmly seated in the backplane connector. Secure the module using the top and bottom latches. Ensure that an appropriate Removable Terminal Block (RTB) is attached securely to the front arm. For heavier wire gauges up to 2.5 mm² (14 AWG), utilize an extended terminal block housing.

Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
FAQ
What is the Allen-Bradley 1756-OA8 and what system does it belong to?
The Allen-Bradley 1756-OA8 is a high-performance digital AC output module engineered specifically for the scalable ControlLogix platform by Rockwell Automation. It delivers reliable discrete control across industrial automation environments by integrating seamlessly into standard 1756 chassis backplanes. The module utilizes advanced Producer-Consumer technology to efficiently share output status across multiple system controllers.
How many output channels does the Allen-Bradley 1756-OA8 feature?
The Allen-Bradley 1756-OA8 features 8 independent AC output channels grouped into 4 points per group. This configuration allows for flexible voltage distribution across different levels within the same physical hardware module. Each point supports configurable states for both fault and program modes to ensure predictable machinery behavior.
What are the voltage and current ratings for the Allen-Bradley 1756-OA8?
The Allen-Bradley 1756-OA8 operates on a nominal 120/240V AC voltage category with an operational range spanning from 79 to 265V AC at 50/60 Hz. It delivers a maximum current of 2A per point at 60 degrees Celsius with linear derating, and up to 5A maximum current per module at 30 degrees Celsius. Additionally, the unit features a robust 2A pilot duty rating suitable for heavy industrial switching applications.
What terminal blocks are required for wiring the Allen-Bradley 1756-OA8?
The Allen-Bradley 1756-OA8 requires a compatible Removable Terminal Block (RTB), such as the 1756-TBNH or 1756-TBSH, for all field-side wiring connections. This front-mounting terminal block allows engineers to replace the module easily without disturbing existing field wiring. Extended terminal block housings are also supported when working with heavier wire gauges up to 14 AWG.
How much backplane power does the Allen-Bradley 1756-OA8 consume?
The Allen-Bradley 1756-OA8 draws minimal backplane power directly from the ControlLogix chassis to optimize system power budgeting. Specifically, it consumes 200 mA at 5.1V DC and 2 mA at 24V DC, resulting in a total backplane power dissipation of just 1.07W. This low power consumption allows for flexible placement throughout high-density automation system racks.
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Allen-Bradley 1756-OA8 ControlLogix Digital AC Output Module

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  • Manufacturer: Allen-Bradley

  • Product No.: 1756-OA8

  • Country of origin:United States

  • Product Type: Digital Output Modules

  • Payment: T/T, Western Union

  • Weight: 1000g

  • Shipping port: Xiamen

  • Warranty: 12 months

Quantità
Visualizza dettagli completi

Product Description

Description

The Allen-Bradley 1756-OA8 is a high-performance ControlLogix digital AC output module designed for demanding industrial automation environments. Engineered by Rockwell Automation, this module delivers reliable discrete control with 8 independent AC output channels grouped to support flexible voltage distribution across different levels within the same physical module.

Part of the scalable ControlLogix platform, the 1756-OA8 integrates seamlessly into standard 1756 chassis backplanes. It utilizes advanced Producer-Consumer technology to share output status efficiently across controllers and supports per-point configurable states for both fault and program modes, ensuring predictable machinery behavior during unexpected communication losses or controller faults.

Features

  • 8 independent AC output channels grouped into 4 points per group
  • Supports 120/240V AC nominal voltage categories (50/60 Hz)
  • Configurable hold-last-state or user-defined states for both fault and program modes per point
  • Requires a compatible Allen-Bradley Removable Terminal Block (RTB) such as the 1756-TBNH or 1756-TBSH for field-side wiring connections
  • Direct backplane power interface drawing minimal current for optimized power budgeting
  • Advanced Producer-Consumer communication architecture for high-speed data exchange

Applications

  • Automotive manufacturing assembly lines
  • Continuous process control and material handling systems
  • Packaging and converting machinery
  • Power generation and utility distribution switching
  • Heavy industrial discrete automation cells

Technical Specifications

Parameter Specification
Manufacturer Allen-Bradley / Rockwell Automation
Product Type Digital AC Output Module
Catalog Number 1756-OA8
Module Family ControlLogix (1756)
Outputs per Module 8 outputs (4 points per group)
Voltage Category 120/240V AC (50/60 Hz)
Operating Voltage Range 79 to 265V AC
Pilot Duty Rating 2A pilot duty
Max Current per Point 2A at 60 degC (linear derating)
Max Current per Module 5A at 30 degC; 4A at 60 degC
Backplane Power Draw 200 mA at 5.1V DC; 2 mA at 24V DC (1.07W total)
Required Terminal Block 1756-TBNH or 1756-TBSH (Ordered Separately)
Country of Origin United States

Connections / Interfaces

The module features a standard 1756 backplane connector on the rear that mounts directly into any slot of a ControlLogix chassis to receive power and communication data. Field-side wiring connects via a removable terminal block (RTB) that plugs into the front of the unit without disturbing field wiring during module replacement.

Installation Guidelines

Mount the 1756-OA8 module into any available slot within a standard 1756 ControlLogix chassis by sliding it along the chassis guide rails until firmly seated in the backplane connector. Secure the module using the top and bottom latches. Ensure that an appropriate Removable Terminal Block (RTB) is attached securely to the front arm. For heavier wire gauges up to 2.5 mm² (14 AWG), utilize an extended terminal block housing.

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Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Allen-Bradley 1756-OA8 ControlLogix Digital AC Output Module

What is the Allen-Bradley 1756-OA8 and what system does it belong to?

The Allen-Bradley 1756-OA8 is a high-performance digital AC output module engineered specifically for the scalable ControlLogix platform by Rockwell Automation. It delivers reliable discrete control across industrial automation environments by integrating seamlessly into standard 1756 chassis backplanes. The module utilizes advanced Producer-Consumer technology to efficiently share output status across multiple system controllers.

How many output channels does the Allen-Bradley 1756-OA8 feature?

The Allen-Bradley 1756-OA8 features 8 independent AC output channels grouped into 4 points per group. This configuration allows for flexible voltage distribution across different levels within the same physical hardware module. Each point supports configurable states for both fault and program modes to ensure predictable machinery behavior.

What are the voltage and current ratings for the Allen-Bradley 1756-OA8?

The Allen-Bradley 1756-OA8 operates on a nominal 120/240V AC voltage category with an operational range spanning from 79 to 265V AC at 50/60 Hz. It delivers a maximum current of 2A per point at 60 degrees Celsius with linear derating, and up to 5A maximum current per module at 30 degrees Celsius. Additionally, the unit features a robust 2A pilot duty rating suitable for heavy industrial switching applications.

What terminal blocks are required for wiring the Allen-Bradley 1756-OA8?

The Allen-Bradley 1756-OA8 requires a compatible Removable Terminal Block (RTB), such as the 1756-TBNH or 1756-TBSH, for all field-side wiring connections. This front-mounting terminal block allows engineers to replace the module easily without disturbing existing field wiring. Extended terminal block housings are also supported when working with heavier wire gauges up to 14 AWG.

How much backplane power does the Allen-Bradley 1756-OA8 consume?

The Allen-Bradley 1756-OA8 draws minimal backplane power directly from the ControlLogix chassis to optimize system power budgeting. Specifically, it consumes 200 mA at 5.1V DC and 2 mA at 24V DC, resulting in a total backplane power dissipation of just 1.07W. This low power consumption allows for flexible placement throughout high-density automation system racks.

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
United States

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