1794-IA8 | Allen-Bradley Flex I/O Input Module, 120VAC, 8 Inputs
1794-IA8 | Allen-Bradley Flex I/O Input Module, 120VAC, 8 Inputs
1794-IA8 | Allen-Bradley Flex I/O Input Module, 120VAC, 8 Inputs
1794-IA8 | Allen-Bradley Flex I/O Input Module, 120VAC, 8 Inputs
1794-IA8 | Allen-Bradley Flex I/O Input Module, 120VAC, 8 Inputs
1794-IA8 | Allen-Bradley Flex I/O Input Module, 120VAC, 8 Inputs
    1794-IA8 | Allen-Bradley Flex I/O Input Module, 120VAC, 8 Inputs
    1794-IA8 | Allen-Bradley Flex I/O Input Module, 120VAC, 8 Inputs
1794-IA8 | Allen-Bradley Flex I/O Input Module, 120VAC, 8 Inputs
1794-IA8 | Allen-Bradley Flex I/O Input Module, 120VAC, 8 Inputs

1794-IA8 | Allen-Bradley Flex I/O Input Module, 120VAC, 8 Inputs

Part #: 1794-IA8 Manufactured by: Allen-Bradley
$162.00
$162.00
5 in Stock
Condition: New-Surplus Original Box
Shipping calculated at checkout.
Product Overview
The Allen-Bradley 1794-IA8 Flex I/O AC Digital Input Module has 8 Non-Isolated Inputs, a 65V AC On-state Voltage min., and...  Read more
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Product Description P/N: 1794-IA8

Description / Specifications

Description 

The Allen-Bradley 1794-IA8 is a FLEX I/O digital input module designed for 120 VAC applications. It provides eight non-isolated input points that convert AC signals into logic-level signals for use by a controller. Compact and flexible, this module mounts on a DIN rail and is commonly applied in distributed I/O systems across industrial automation environments.

 

 

Technical Specifications 

Brand Allen-Bradley
Manufacturer Rockwell Automation
Part Number 1794-IA8
Product Type Flex I/O AC Digital Input Module
Inputs 8 Non-Isolated
On-state Voltage min. 65V AC
On-state Voltage max. 132V AC
On-state Current min. 7.1mA
On-state Current max. 14.32mA
Off-state Voltage max. 43V AC
Off-state Current min. 2.9mA
Nominal Input Current 12 mA @ 120V AC
Flexbus Current 30mA @ 5V DC
Power Dissipation 4.5W @ 132V AC max.
Series A

  

 

Information About 1794-IA8

The 1794-IA8 is part of the Allen-Bradley FLEX I/O 1794 series, built for modular and space-efficient distributed I/O. It supports eight input channels with operating voltage from 85 to 132 VAC at 47–63 Hz, and a nominal voltage of 120 VAC. Each input requires a minimum of 65 VAC to switch ON and recognizes OFF below 43 VAC. The module draws 30 mA from the FlexBus at 5 VDC and dissipates a maximum of 4.5 W at 132 VAC. It includes eight yellow LED indicators for channel status and is compatible with multiple terminal base units, including 1794-TB2, 1794-TB3, 1794-TBN, and 1794-TBNK. With an isolation rating of 2150 VDC for one second and built-in filtering (8.4 ms ON delay, 26.4 ms OFF delay), the 1794-IA8 ensures reliable operation. It operates from -20 to 55 °C with 5–95% non-condensing humidity, carries approvals for Class I, Div. 2 hazardous locations, and provides robust vibration and shock resistance.

Key Features:

  • Series: Part of the Allen-Bradley FLEX I/O 1794 distributed I/O family.
  • Inputs: 8 non-isolated digital AC inputs.
  • Voltage Range: Operates at 85–132 VAC, nominal 120 VAC.
  • Signal Thresholds: 65 VAC minimum ON, 43 VAC maximum OFF.
  • Current: Typical 12 mA at 120 VAC, 60 Hz.
  • FlexBus Load: 30 mA at 5 VDC.
  • Diagnostics: 8 yellow LED status indicators for channel monitoring.
  • Mounting: DIN rail or panel mount with compatible terminal bases.
  • Environmental: Operating range -20…55 °C, 5–95% RH, rated for Class I, Div. 2 hazardous areas.
  • Protection: IP20 open-type module with 2150 VDC isolation.

The 1794-IA8 delivers reliable 120 VAC input capability for distributed FLEX I/O control systems in industrial automation.


Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

Frequently Asked Questions about 1794-IA8
Question: What is the Allen-Bradley 1794-IA8 used for?
Date Update:27/05/2025
Answer:

The 1794-IA8 is an AC digital input module used to detect signals from field devices such as switches, sensors, and other discrete sources in industrial automation systems. It is part of the FLEX I/O system, which allows modular expansion and flexible configuration of control systems. This module accepts 120V AC signals and converts them into logic-level inputs for a controller.

Question: Is the 1794-IA8 compatible with specific terminal base units?
Date Update:27/05/2025
Answer:

Yes, it is compatible with several terminal base units including 1794-TB3K, 1794-TBN, 1794-TB3SK, 1794-TB2, and others. These bases facilitate wiring and simplify module replacement or expansion. The keying feature ensures correct module installation.

Question: How many input channels does the 1794-IA8 module provide?
Date Update:27/05/2025
Answer:

This module provides 8 non-isolated input channels. All inputs share a common signal return, meaning they are not electrically isolated from each other. It is important to ensure that all input devices operate at compatible voltage levels to avoid interference.

Question: What is the input voltage and frequency range of the 1794-IA8?
Date Update:27/05/2025
Answer:

The 1794-IA8 operates within an input voltage range of 85–132V AC and supports frequencies from 47 to 63 Hz. The nominal voltage is 120V AC, which is typical for North American power standards. It is suitable for use with standard AC control signals in industrial applications.

Question: Is the 1794-IA8 module still being manufactured?
Date Update:27/05/2025
Answer:

Yes, the 1794-IA8 remains a currently supported and widely used module in the FLEX I/O family. It continues to be available through Rockwell Automation and authorized distributors. However, it's always best to confirm availability or potential migration recommendations with your local distributor or Rockwell representative.

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-IA8 is a FLEX I/O digital input module designed for 120 VAC applications. It provides eight non-isolated input points that convert AC signals into logic-level signals for use by a controller. Compact and flexible, this module mounts on a DIN rail and is commonly applied in distributed I/O systems across industrial automation environments.

 

 

Technical Specifications 

Brand Allen-Bradley
Manufacturer Rockwell Automation
Part Number 1794-IA8
Product Type Flex I/O AC Digital Input Module
Inputs 8 Non-Isolated
On-state Voltage min. 65V AC
On-state Voltage max. 132V AC
On-state Current min. 7.1mA
On-state Current max. 14.32mA
Off-state Voltage max. 43V AC
Off-state Current min. 2.9mA
Nominal Input Current 12 mA @ 120V AC
Flexbus Current 30mA @ 5V DC
Power Dissipation 4.5W @ 132V AC max.
Series A

  

 

Information About 1794-IA8

The 1794-IA8 is part of the Allen-Bradley FLEX I/O 1794 series, built for modular and space-efficient distributed I/O. It supports eight input channels with operating voltage from 85 to 132 VAC at 47–63 Hz, and a nominal voltage of 120 VAC. Each input requires a minimum of 65 VAC to switch ON and recognizes OFF below 43 VAC. The module draws 30 mA from the FlexBus at 5 VDC and dissipates a maximum of 4.5 W at 132 VAC. It includes eight yellow LED indicators for channel status and is compatible with multiple terminal base units, including 1794-TB2, 1794-TB3, 1794-TBN, and 1794-TBNK. With an isolation rating of 2150 VDC for one second and built-in filtering (8.4 ms ON delay, 26.4 ms OFF delay), the 1794-IA8 ensures reliable operation. It operates from -20 to 55 °C with 5–95% non-condensing humidity, carries approvals for Class I, Div. 2 hazardous locations, and provides robust vibration and shock resistance.

Key Features:

  • Series: Part of the Allen-Bradley FLEX I/O 1794 distributed I/O family.
  • Inputs: 8 non-isolated digital AC inputs.
  • Voltage Range: Operates at 85–132 VAC, nominal 120 VAC.
  • Signal Thresholds: 65 VAC minimum ON, 43 VAC maximum OFF.
  • Current: Typical 12 mA at 120 VAC, 60 Hz.
  • FlexBus Load: 30 mA at 5 VDC.
  • Diagnostics: 8 yellow LED status indicators for channel monitoring.
  • Mounting: DIN rail or panel mount with compatible terminal bases.
  • Environmental: Operating range -20…55 °C, 5–95% RH, rated for Class I, Div. 2 hazardous areas.
  • Protection: IP20 open-type module with 2150 VDC isolation.

The 1794-IA8 delivers reliable 120 VAC input capability for distributed FLEX I/O control systems in industrial automation.


Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

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