1794-IA16 | Allen-Bradley Flex I/O 16-Channel AC Input Module, 74–132 VAC
1794-IA16 | Allen-Bradley Flex I/O 16-Channel AC Input Module, 74–132 VAC
1794-IA16 | Allen-Bradley Flex I/O 16-Channel AC Input Module, 74–132 VAC
    1794-IA16 | Allen-Bradley Flex I/O 16-Channel AC Input Module, 74–132 VAC
1794-IA16 | Allen-Bradley Flex I/O 16-Channel AC Input Module, 74–132 VAC

1794-IA16 | Allen-Bradley Flex I/O 16-Channel AC Input Module, 74–132 VAC

Part #: 1794-IA16 Manufactured by: Allen-Bradley
$297.00
$297.00
4 in Stock
Condition: New – Open box
Shipping calculated at checkout.
Product Overview
The Allen-Bradley 1794-IA16 Flex I/O AC Digital Input Module has 16 Nonisolated Inputs, a 74V AC On-state Voltage min., an...  Read more
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Product Description P/N: 1794-IA16

Description / Specifications

Description

The Allen-Bradley 1794-IA16 is a Flex I/O AC digital input module featuring sixteen non-isolated input channels for interfacing 74–132 VAC field devices. It is designed for use with Flex I/O communication adapters and terminal bases, enabling scalable distributed I/O architectures. With built-in status indicators and DIN-rail mounting, the module provides reliable AC signal monitoring in compact industrial installations.

 

 

Technical Specifications

Condition New/Never Used Surplus
Brand Allen-Bradley
Category Flex I/O Modules
Part Number 1794-IA16
Subcategory AC Digital Input Modules
Manufacturer Rockwell Automation
Number of Inputs 16 (non-isolated)
Input Voltage Range 74–132 VAC
Nominal Input Voltage 120 VAC
On-State Voltage (Min/Max) 74 VAC / 132 VAC
Off-State Voltage (Max) 20 VAC
On-State Current (Min/Max) 5.49 mA / 14.81 mA
Off-State Current (Min) 2.9 mA
Nominal Input Current 12 mA at 120 VAC
FlexBus Current 20 mA
Power Dissipation 6.4 W at 132 VAC
Terminal Base Compatibility 1794-TB3, TB3S, TBN, TB3K, TB3SK, TBNK
Keyswitch Position 8
Indicators 16 yellow status LEDs
Enclosure Type Open-style
Mounting DIN rail
Dimensions 94 × 94 × 69 mm (3.7 × 3.7 × 2.7 in)
Operating Temperature 0–55 °C (32–131 °F)
Storage Temperature –40–85 °C (–40–185 °F)
Vibration 5 g @ 10–500 Hz
Operating Shock 30 g
Non-Operating Shock 50 g
Product Description AC Input Module
Product Family Flex I/O
Product Type AC Digital Input Module

 

 

Information About 1794-IA16

The 1794-IA16 is part of the Flex I/O family, offering modular AC input functionality for distributed control systems. It supports a wide range of terminal bases, enabling flexible mechanical and electrical configuration depending on installation requirements. The module operates within a nominal 120 VAC input range and provides channel-level diagnostics through individual yellow indicators. Typical uses include sensing device feedback in machinery, motor control centers, process equipment, and remote I/O panels requiring compact AC signal interfacing.

Key Features

  • Sixteen AC Input Channels: Accepts 74–132 VAC signals for monitoring discrete field devices.
  • Non-Isolated Channels: Designed for cost-effective and space-efficient signal acquisition.
  • Supports Multiple Terminal Bases: Compatible with TB3, TB3S, TBN, TB3K, TB3SK, and TBNK Flex bases.
  • Flex I/O Architecture: Integrates with ControlNet, EtherNet/IP, and Remote I/O adapters.
  • Channel Status Indicators: Sixteen yellow LEDs show input energization states.
  • Wide Operating Temperature Range: Suitable for industrial environments from 0 to 55 °C.
  • Compact DIN-Rail Mounting: Easy installation within distributed control enclosures.
  • Low FlexBus Current Draw: Consumes only 20 mA from the system backplane.

The 1794-IA16 delivers the reliability and precision required for AC input monitoring in modular Flex I/O systems.

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Frequently Asked Questions about 1794-IA16
Question: What is the 1794-IA16 module?
Date Update:11/06/2025
Answer:

It’s a 16-point AC digital input module that provides 16 individually isolated input channels for 120V AC input signals. It’s part of the Flex I/O series, known for its modularity and flexibility in distributed I/O systems.

Question: What is the input type of the 1794-IA16?
Date Update:11/06/2025
Answer:

It’s a sink/source AC input module. This means it can handle both sourcing and sinking AC signals for flexibility in system integration.

Question: What are the 1794-IA16 physical specifications?
Date Update:11/06/2025
Answer:
  • Dimensions: ~94 x 94 x 69 mm (3.7 x 3.7 x 2.7 in)
  • Weight: ~200 grams (0.44 lbs)
  • Mounting: DIN-rail or panel-mount within an IP-rated enclosure
Question: How is the wiring done for this module?
Date Update:11/06/2025
Answer:

The 1794-IA16 is typically connected to a 1794-TB3 or 1794-TB3S terminal base.

  • Wiring: Each of the 16 input terminals connects to an AC signal line.
  • Common terminals: Provide shared AC neutral/return connections.
  • Terminal labeling: Each input has a unique terminal, and commons are typically grouped for convenience.


Wiring Diagram:

  • Inputs 0–15 connect to the individual AC lines (e.g., L1, L2, L3, etc.).
  • The common terminals (like 16, 34 on TB3) connect to the neutral line.
  • A diagram in the user manual shows clear mapping between terminal numbers and input channels.
Question: What software is needed to configure this module?
Date Update:11/06/2025
Answer:

The 1794-IA16 doesn’t require dedicated configuration software—it’s automatically recognized by the controller (e.g., CompactLogix or ControlLogix) when added to the I/O configuration in RSLogix 5000 (Studio 5000).

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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-IA16 is a Flex I/O AC digital input module featuring sixteen non-isolated input channels for interfacing 74–132 VAC field devices. It is designed for use with Flex I/O communication adapters and terminal bases, enabling scalable distributed I/O architectures. With built-in status indicators and DIN-rail mounting, the module provides reliable AC signal monitoring in compact industrial installations.

 

 

Technical Specifications

Condition New/Never Used Surplus
Brand Allen-Bradley
Category Flex I/O Modules
Part Number 1794-IA16
Subcategory AC Digital Input Modules
Manufacturer Rockwell Automation
Number of Inputs 16 (non-isolated)
Input Voltage Range 74–132 VAC
Nominal Input Voltage 120 VAC
On-State Voltage (Min/Max) 74 VAC / 132 VAC
Off-State Voltage (Max) 20 VAC
On-State Current (Min/Max) 5.49 mA / 14.81 mA
Off-State Current (Min) 2.9 mA
Nominal Input Current 12 mA at 120 VAC
FlexBus Current 20 mA
Power Dissipation 6.4 W at 132 VAC
Terminal Base Compatibility 1794-TB3, TB3S, TBN, TB3K, TB3SK, TBNK
Keyswitch Position 8
Indicators 16 yellow status LEDs
Enclosure Type Open-style
Mounting DIN rail
Dimensions 94 × 94 × 69 mm (3.7 × 3.7 × 2.7 in)
Operating Temperature 0–55 °C (32–131 °F)
Storage Temperature –40–85 °C (–40–185 °F)
Vibration 5 g @ 10–500 Hz
Operating Shock 30 g
Non-Operating Shock 50 g
Product Description AC Input Module
Product Family Flex I/O
Product Type AC Digital Input Module

 

 

Information About 1794-IA16

The 1794-IA16 is part of the Flex I/O family, offering modular AC input functionality for distributed control systems. It supports a wide range of terminal bases, enabling flexible mechanical and electrical configuration depending on installation requirements. The module operates within a nominal 120 VAC input range and provides channel-level diagnostics through individual yellow indicators. Typical uses include sensing device feedback in machinery, motor control centers, process equipment, and remote I/O panels requiring compact AC signal interfacing.

Key Features

  • Sixteen AC Input Channels: Accepts 74–132 VAC signals for monitoring discrete field devices.
  • Non-Isolated Channels: Designed for cost-effective and space-efficient signal acquisition.
  • Supports Multiple Terminal Bases: Compatible with TB3, TB3S, TBN, TB3K, TB3SK, and TBNK Flex bases.
  • Flex I/O Architecture: Integrates with ControlNet, EtherNet/IP, and Remote I/O adapters.
  • Channel Status Indicators: Sixteen yellow LEDs show input energization states.
  • Wide Operating Temperature Range: Suitable for industrial environments from 0 to 55 °C.
  • Compact DIN-Rail Mounting: Easy installation within distributed control enclosures.
  • Low FlexBus Current Draw: Consumes only 20 mA from the system backplane.

The 1794-IA16 delivers the reliability and precision required for AC input monitoring in modular Flex I/O systems.

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