1794-ASB2 | Allen-Bradley FLEX Remote I/O Adapter 24V DC, 2-Module Capacity
1794-ASB2 | Allen-Bradley FLEX Remote I/O Adapter 24V DC, 2-Module Capacity
1794-ASB2 | Allen-Bradley FLEX Remote I/O Adapter 24V DC, 2-Module Capacity
    1794-ASB2 | Allen-Bradley FLEX Remote I/O Adapter 24V DC, 2-Module Capacity
1794-ASB2 | Allen-Bradley FLEX Remote I/O Adapter 24V DC, 2-Module Capacity

1794-ASB2 | Allen-Bradley FLEX Remote I/O Adapter 24V DC, 2-Module Capacity

Part #: 1794-ASB2 Manufactured by: Allen-Bradley
$1,267.00
$1,267.00
2 in Stock
Condition: New – Open box
Shipping calculated at checkout.
Product Overview
The Allen-Bradley 1794-ASB2 is a FLEX Remote I/O Adapter featuring a 24V DC power supply and a capacity for 2 I/O modules...  Read more
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Product Description P/N: 1794-ASB2

Description / Specifications

Description 

The Allen-Bradley 1794-ASB2 is a FLEX Remote I/O adapter designed to support distributed I/O expansion with a 24V DC power supply. It accommodates up to two FLEX I/O modules, enabling reliable remote integration of input and output devices within industrial automation systems.

 

 

Technical Specifications

Condition New/Never Used Surplus
Brand Allen-Bradley
Category PLCs / Machine Control
Part Number 1794-ASB2
Subcategory FLEX Remote I/O Adapter
I/O Capacity 2 Modules
Power Supply Voltage 24V DC
UPC 10662468112175
Mounting Type FLEX I/O Base Mount
System Compatibility FLEX I/O Platform
Application Remote I/O Expansion

 

 

Information About 1794-ASB2

The 1794-ASB2 is part of the Allen-Bradley FLEX I/O system and is designed to provide remote communication and connectivity for distributed input and output devices. Operating on a 24V DC power supply, it ensures stable power delivery to connected FLEX I/O modules, enhancing system performance and reliability in industrial environments. With a capacity to support two I/O modules, it offers a compact and scalable solution for applications requiring minimal but efficient remote I/O expansion. Its design makes it suitable for PLC-based machine control architectures where modularity, flexibility, and ease of installation are essential.

Key Features

  • Modular Expansion Support: accommodates up to two FLEX I/O modules for compact remote I/O integration.
  • Stable 24V DC Power: provides consistent power distribution to connected devices within the FLEX I/O platform.
  • FLEX I/O Compatibility: designed specifically for the Allen-Bradley FLEX ecosystem, ensuring seamless integration with existing systems.
  • Remote I/O Functionality: enables distributed placement of I/O modules to reduce wiring complexity and improve system layout efficiency.
  • Compact Industrial Design: optimized for installations where panel space is limited without sacrificing performance.
  • Scalable Architecture: allows I/O capacity to be adjusted according to application requirements for flexible system configuration.
  • Reliable Operation: engineered for continuous use in PLC and machine control environments with stable signal handling.
  • Easy Installation: mounts directly onto FLEX I/O bases for quick setup and simplified system expansion.

The 1794-ASB2 delivers the reliability and precision required for distributed I/O networking, flexible expansion, and efficient remote automation control in industrial environments.

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Frequently Asked Questions about 1794-ASB2
Question: What is the 1794‑ASB2 used for?
Date Update:19/06/2025
Answer:

The 1794‑ASB2 is a 2‑slot Remote I/O Adapter module from the Allen‑Bradley FLEX I/O family. It provides communications and power to up to 2 FLEX I/O modules via Remote I/O network. It supports data rates of 57.6, 115.2, and 230.4 kbps and includes a built-in 24 V DC → 5 V DC power supply for the backplane.

Question: What are the 1794-ASB2 power requirements and specs?
Date Update:19/06/2025
Answer:
  • Input voltage: 19.2–31.2 V DC (nominal 24 V)
  • Current draw: ~330 mA typical, up to 450 mA
  • Backplane supply output: 5 V DC at up to 640 mA
  • Power dissipation: Approx. 4.6 W (1.7 BTU/hr)
Question: How do I mount and wire the 1794-ASB2 module?
Date Update:19/06/2025
Answer:
  • Mounting: Snap onto a standard 35×7.5 mm DIN rail (EN 50022) with secure locking tab.
  • Remote I/O cable: Connect shield (SH), remote I/O lines 1 & 2 per remote network wiring.
  • Power terminals:
    +24 V DC to terminal E
    0 V (common) to terminal D
    Pass-through terminals F & G allow daisy chaining
Question: What type of I/O network does the 1794-ASB2 support?
Date Update:19/06/2025
Answer:

The 1794-ASB2 communicates over Allen-Bradley Remote I/O (RIO) using RS-232-C standard at selectable baud rates of 57.6, 115.2, or 230.4 kbps. It acts as a scanner-compatible slave, meaning it requires a PLC or scanner module to initiate communication and polling.

Question: Can I use the 1794-ASB2 with ControlLogix or SLC systems?
Date Update:19/06/2025
Answer:

Yes. The 1794-ASB2 can interface with Allen-Bradley PLC-5, SLC 500, or ControlLogix platforms, as long as they have a Remote I/O (RIO) scanner module (e.g., 1747-SN, 1756-DHRIO). ControlLogix requires a 1756-DHRIO card configured for RIO mode.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1794-ASB2 is a FLEX Remote I/O adapter designed to support distributed I/O expansion with a 24V DC power supply. It accommodates up to two FLEX I/O modules, enabling reliable remote integration of input and output devices within industrial automation systems.

 

 

Technical Specifications

Condition New/Never Used Surplus
Brand Allen-Bradley
Category PLCs / Machine Control
Part Number 1794-ASB2
Subcategory FLEX Remote I/O Adapter
I/O Capacity 2 Modules
Power Supply Voltage 24V DC
UPC 10662468112175
Mounting Type FLEX I/O Base Mount
System Compatibility FLEX I/O Platform
Application Remote I/O Expansion

 

 

Information About 1794-ASB2

The 1794-ASB2 is part of the Allen-Bradley FLEX I/O system and is designed to provide remote communication and connectivity for distributed input and output devices. Operating on a 24V DC power supply, it ensures stable power delivery to connected FLEX I/O modules, enhancing system performance and reliability in industrial environments. With a capacity to support two I/O modules, it offers a compact and scalable solution for applications requiring minimal but efficient remote I/O expansion. Its design makes it suitable for PLC-based machine control architectures where modularity, flexibility, and ease of installation are essential.

Key Features

  • Modular Expansion Support: accommodates up to two FLEX I/O modules for compact remote I/O integration.
  • Stable 24V DC Power: provides consistent power distribution to connected devices within the FLEX I/O platform.
  • FLEX I/O Compatibility: designed specifically for the Allen-Bradley FLEX ecosystem, ensuring seamless integration with existing systems.
  • Remote I/O Functionality: enables distributed placement of I/O modules to reduce wiring complexity and improve system layout efficiency.
  • Compact Industrial Design: optimized for installations where panel space is limited without sacrificing performance.
  • Scalable Architecture: allows I/O capacity to be adjusted according to application requirements for flexible system configuration.
  • Reliable Operation: engineered for continuous use in PLC and machine control environments with stable signal handling.
  • Easy Installation: mounts directly onto FLEX I/O bases for quick setup and simplified system expansion.

The 1794-ASB2 delivers the reliability and precision required for distributed I/O networking, flexible expansion, and efficient remote automation control in industrial environments.

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