1794-IB16 | Allen-Bradley FLEX I/O Input Module, 24V DC, 16 Sink Inputs
1794-IB16 | Allen-Bradley FLEX I/O Input Module, 24V DC, 16 Sink Inputs
1794-IB16 | Allen-Bradley FLEX I/O Input Module, 24V DC, 16 Sink Inputs
    1794-IB16 | Allen-Bradley FLEX I/O Input Module, 24V DC, 16 Sink Inputs
1794-IB16 | Allen-Bradley FLEX I/O Input Module, 24V DC, 16 Sink Inputs

1794-IB16 | Allen-Bradley FLEX I/O Input Module, 24V DC, 16 Sink Inputs

Part #: 1794-IB16 Manufactured by: Allen-Bradley
$89.00
$89.00
2 in Stock
Condition: New-Surplus Original Box
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Product Overview
The Allen-Bradley 1794-IB16 provides high-density 24 VDC sinking input capability within the Flex I/O platform. Its modula...  Read more
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Product Description P/N: 1794-IB16

Description / Specifications

Description 

The Allen-Bradley 1794-IB16 is a Flex I/O discrete input module designed for distributed control systems. It provides sixteen 24 VDC sinking input channels and connects through terminal base units for flexible wiring and integration.

 

 

Technical Specifications 

Brand Allen-Bradley
Manufacturer Rockwell Automation
Part Number 1794-IB16
Operating Temperature 0 to 55 C (32 to 131 F)
Wire Size Determined by installed terminal base
Mounting DIN Rail
Indicators 16 Yellow status indicators
On-state Voltage, nom. 24 VDC
On-state Voltage, max. 31.2 VDC
On-state Voltage, min. 19.2 VDC
Number of Inputs Sixteen (16), sinking inputs
Terminal base 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK, 1794- TBKD, 1794-TB37DS
Product Description Flex IO DC Input Module
Storage Temperature -40 to 85 C (-40 to 185 F)
Vibration 5g @ 10 to 500 Hz
Operating Shock 30 g
Product Type Flex I/O Digital Input Modules
Inputs 16 Current Sinking
On-state Voltage min. 10V DC
On-state Voltage max. 31.2V DC
On-state Current min. 2.0mA min.
On-state Current max. 12.0mA
Off-state Voltage max. 5V DC
Off-state Current max. 1.5mA
Flexbus Current 30mA @ 5V DC
Power Dissipation 6.1W @ 31.2V DC max.

  

 

Information About 1794-IB16

The 1794-IB16 is part of the Allen-Bradley Flex I/O family, developed to reduce wiring complexity and installation costs by allowing distributed I/O placement near field devices. This module supports sixteen current sinking inputs, with an operating voltage range of 10–31.2 VDC and a nominal voltage of 24 VDC. Input signals are considered ON above 10 VDC with a minimum current of 2.0 mA and OFF below 5 VDC with leakage currents up to 1.5 mA. The unit provides sixteen yellow status indicators, one per channel, for quick diagnostics and monitoring. Compatible with several terminal base units including 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK, 1794-TBKD, and 1794-TB37DS, it ensures wiring flexibility. Communication to the controller requires a Flex I/O adapter such as 1794-AENT (Ethernet), 1794-ADN (DeviceNet), 1794-ASB (Remote I/O), 1794-ACN (ControlNet), or 1794-APB (Profibus). With DIN rail mounting and rugged design tested for vibration and shock, the 1794-IB16 is widely applied in distributed control and monitoring.

Key Features:

  • Input Channels: Sixteen 24 VDC sinking inputs grouped for distributed applications.
  • Voltage Range: Operates from 10–31.2 VDC, nominal 24 VDC, with ON threshold above 10 VDC.
  • Current Characteristics: Requires 2.0 mA minimum ON current; tolerates up to 12 mA; OFF state leakage max 1.5 mA.
  • Indicators: Sixteen yellow status LEDs provide per-channel signal monitoring.
  • Mounting: DIN rail mounting for quick installation in distributed I/O setups.
  • Terminal Bases: Compatible with 1794-TB3, TB3S, TB3K, TB3SK, TBKD, and TB37DS terminal bases.
  • Communication: Works with Flex I/O adapters including Ethernet, ControlNet, DeviceNet, Profibus, and Remote I/O.
  • Durability: Rated for 0–55 °C operation, with 30 g shock and 5 g vibration resistance.

The 1794-IB16 delivers the reliability and precision required for distributed digital input applications in Flex I/O systems.


 

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-IB16
Question: What is the primary function of the 1794-IB16 module?
Date Update:30/05/2025
Answer:

The 1794-IB16 is a discrete input module from the Flex I/O family that provides sixteen (16) current-sinking input channels. Its primary role is to monitor digital signals from field devices such as push buttons, sensors, and switches. It is widely used in distributed control architectures where I/O modules are mounted close to machines or processes. This reduces wiring complexity and improves system maintainability.

Question: What voltage and current ratings are supported by the 1794-IB16 input channels?
Date Update:30/05/2025
Answer:

Each input channel supports a voltage range of 10 to 31.2 VDC, with a nominal voltage of 24 VDC. The input current per channel ranges from 2.0 mA to 12.0 mA. These specifications make the module suitable for interfacing with a wide range of standard industrial sensors and switches. Off-state voltage must not exceed 5 VDC, and off-state current is limited to 1.5 mA.

Question: What are the dimensions and weight of the 1794-IB16 module?
Date Update:30/05/2025
Answer:

The Allen-Bradley 1794-IB16 has a compact and lightweight design, typical of the Flex I/O series. Its dimensions are approximately 87 x 94 x 69 mm (3.4 x 3.7 x 2.7 inches), making it suitable for dense installations on DIN rails. The module weighs about 227 grams (8 ounces), which allows easy handling and mounting even in space-constrained enclosures. Its small footprint helps reduce the overall size of distributed I/O panels.

Question: What are the compatible terminal base units for wiring the 1794-IB16?
Date Update:30/05/2025
Answer:

The 1794-IB16 is compatible with multiple terminal bases including 1794-TB3, TB3S, TB3K, TB3SK, TBKD, and TB37DS. These bases provide the interface for connecting field wiring to the module. The specific terminal base selection depends on the application, such as whether screw terminals or spring-clamp terminals are preferred. Terminal base choice also affects wire gauge and installation flexibility.

Question: Is the 1794-IB16 still in production and widely supported?
Date Update:30/05/2025
Answer:

Yes, the 1794-IB16 remains an actively supported product within the Allen-Bradley Flex I/O family. It is used in many legacy and modern distributed I/O systems and is compatible with various communication adapters. Its reliability and flexible mounting make it a popular choice in both new and retrofit automation projects. Rockwell Automation continues to provide support, documentation, and spare parts for this module.

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-IB16 is a Flex I/O discrete input module designed for distributed control systems. It provides sixteen 24 VDC sinking input channels and connects through terminal base units for flexible wiring and integration.

 

 

Technical Specifications 

Brand Allen-Bradley
Manufacturer Rockwell Automation
Part Number 1794-IB16
Operating Temperature 0 to 55 C (32 to 131 F)
Wire Size Determined by installed terminal base
Mounting DIN Rail
Indicators 16 Yellow status indicators
On-state Voltage, nom. 24 VDC
On-state Voltage, max. 31.2 VDC
On-state Voltage, min. 19.2 VDC
Number of Inputs Sixteen (16), sinking inputs
Terminal base 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK, 1794- TBKD, 1794-TB37DS
Product Description Flex IO DC Input Module
Storage Temperature -40 to 85 C (-40 to 185 F)
Vibration 5g @ 10 to 500 Hz
Operating Shock 30 g
Product Type Flex I/O Digital Input Modules
Inputs 16 Current Sinking
On-state Voltage min. 10V DC
On-state Voltage max. 31.2V DC
On-state Current min. 2.0mA min.
On-state Current max. 12.0mA
Off-state Voltage max. 5V DC
Off-state Current max. 1.5mA
Flexbus Current 30mA @ 5V DC
Power Dissipation 6.1W @ 31.2V DC max.

  

 

Information About 1794-IB16

The 1794-IB16 is part of the Allen-Bradley Flex I/O family, developed to reduce wiring complexity and installation costs by allowing distributed I/O placement near field devices. This module supports sixteen current sinking inputs, with an operating voltage range of 10–31.2 VDC and a nominal voltage of 24 VDC. Input signals are considered ON above 10 VDC with a minimum current of 2.0 mA and OFF below 5 VDC with leakage currents up to 1.5 mA. The unit provides sixteen yellow status indicators, one per channel, for quick diagnostics and monitoring. Compatible with several terminal base units including 1794-TB3, 1794-TB3S, 1794-TB3K, 1794-TB3SK, 1794-TBKD, and 1794-TB37DS, it ensures wiring flexibility. Communication to the controller requires a Flex I/O adapter such as 1794-AENT (Ethernet), 1794-ADN (DeviceNet), 1794-ASB (Remote I/O), 1794-ACN (ControlNet), or 1794-APB (Profibus). With DIN rail mounting and rugged design tested for vibration and shock, the 1794-IB16 is widely applied in distributed control and monitoring.

Key Features:

  • Input Channels: Sixteen 24 VDC sinking inputs grouped for distributed applications.
  • Voltage Range: Operates from 10–31.2 VDC, nominal 24 VDC, with ON threshold above 10 VDC.
  • Current Characteristics: Requires 2.0 mA minimum ON current; tolerates up to 12 mA; OFF state leakage max 1.5 mA.
  • Indicators: Sixteen yellow status LEDs provide per-channel signal monitoring.
  • Mounting: DIN rail mounting for quick installation in distributed I/O setups.
  • Terminal Bases: Compatible with 1794-TB3, TB3S, TB3K, TB3SK, TBKD, and TB37DS terminal bases.
  • Communication: Works with Flex I/O adapters including Ethernet, ControlNet, DeviceNet, Profibus, and Remote I/O.
  • Durability: Rated for 0–55 °C operation, with 30 g shock and 5 g vibration resistance.

The 1794-IB16 delivers the reliability and precision required for distributed digital input applications in Flex I/O systems.


 

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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