1791-16B0 | Allen-Bradley Block I/O Input Module, 24V DC, 16 Inputs
1791-16B0 | Allen-Bradley Block I/O Input Module, 24V DC, 16 Inputs
1791-16B0 | Allen-Bradley Block I/O Input Module, 24V DC, 16 Inputs
    1791-16B0 | Allen-Bradley Block I/O Input Module, 24V DC, 16 Inputs
1791-16B0 | Allen-Bradley Block I/O Input Module, 24V DC, 16 Inputs

1791-16B0 | Allen-Bradley Block I/O Input Module, 24V DC, 16 Inputs

Part #: 1791-16B0 Manufactured by: Allen-Bradley
Regular price
$768.00
Sale price
$768.00
Regular price
5 in Stock
Condition: New-Surplus Original Box
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Product Overview
1791-16B0 24V DC Block I/O Allen-Bradley AB with 16 Inputs per Block and Outputs per Block.
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Product Description P/N: 1791-16B0

Description / Specifications

Description 

The 1791-16B0 input module has been designed by Allen-Bradley as part of the 1791 Block I/O series. It is a DC-powered block I/O module with 16 inputs. The 1791-16B0 input module has an input voltage rating of 24 Volts DC. It operates by converting the input voltage that it receives into DC power that can be used by the processor that it is connected to. Its maximum input impedance rating is 3.4K Ohms. The 1791-16B0 input module can be used in applications with different kinds of switches such as pushbutton switches, float switches, selector switches, limit switches, and proximity switches.

 

Technical Specifications 

Brand Allen-Bradley
Manufacturer Rockwell Automation
Part Number 1791-16B0
Voltage 24V dc
Inputs per Block 16
Series B

  

 

Information About 1791-16B0

The Allen-Bradley 1791-16B0 is a 16-point DC Block I/O module.  This module has 16 DC inputs and requires an input power of 24 Volts DC. The 1791-16B0 converts DC power from the input to appropriate DC power level that can be used by processor. The maximum input impedance of this I/O block is 3.4k ohms. There are several typical input devices for block I/O, those are proximity switches, limit switches, selector switches, float switches, and pushbutton switches.

1791-16B0 is compatible with various Allen-Bradley programmable logic controllers. Those are PLC-2, PLC-3, PLC-5/250, PLC-5, and SLC. The wiring connections for this module are easy to modify. A removable terminal strip feature is designed to replace or connect any wiring to the I/O block. You need to unscrew 2 captive screws from the terminal strip first before using it. Be aware of the technical input specifications of this I/O block. Be sure that any devices connected with this I/O block must have compatible voltage and current specifications.  1791-16B0 also has programmable controller user interface that allows you to easily navigate and control this I/O block. There is a power supply built into the module along with internal protection. The status indicator located on this module is used during troubleshooting. Switch assemblies are located behind the front cover. These switch assemblies are used for setting last state, last chassis, and I/O rack number.  The block I/O offers a complete I/O interface that includes the functionality of adapter and an I/O rack.


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 1791-16B0
Question: What is the Allen-Bradley 1791-16B0 used for?
Date Update:28/05/2025
Answer:

The 1791-16B0 is a 16-point DC Block I/O module that provides digital input capabilities for industrial automation systems. It converts incoming 24V DC signals into logic-level signals that can be processed by compatible PLCs. The module is ideal for reading the status of devices like limit switches, pushbuttons, and proximity sensors in a distributed control environment.

Question: How many inputs are available on the 1791-16B0?
Date Update:28/05/2025
Answer:

The 1791-16B0 features 16 digital DC inputs. These inputs allow the module to monitor the status of up to 16 discrete devices simultaneously. Each input point operates independently and can be configured within the controller logic.

Question: Which controllers are compatible with the 1791-16B0?
Date Update:28/05/2025
Answer:

This module supports multiple Allen-Bradley platforms, including PLC-2, PLC-3, PLC-5/250, PLC-5, and SLC controllers. Its flexibility makes it suitable for integration into both legacy and mid-range automation systems. Compatibility should still be confirmed with current firmware and system requirements.

Question: What is the input impedance of this module?
Date Update:28/05/2025
Answer:

The maximum input impedance of the 1791-16B0 is 3.4K Ohms. This affects the current draw from input devices and helps determine compatibility. Always ensure that the connected devices can properly drive the input under this load.

Question: Is the 1791-16B0 still in production?
Date Update:28/05/2025
Answer:

As of now, the 1791-16B0 is an older Block I/O module and may have limited availability. It is advisable to verify its production status with Rockwell Automation or authorized distributors. For new installations, more recent Flex I/O or Compact I/O solutions may be recommended.

IQElectro is not an authorized distributor.
QElectro 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 1791-16B0 input module has been designed by Allen-Bradley as part of the 1791 Block I/O series. It is a DC-powered block I/O module with 16 inputs. The 1791-16B0 input module has an input voltage rating of 24 Volts DC. It operates by converting the input voltage that it receives into DC power that can be used by the processor that it is connected to. Its maximum input impedance rating is 3.4K Ohms. The 1791-16B0 input module can be used in applications with different kinds of switches such as pushbutton switches, float switches, selector switches, limit switches, and proximity switches.

 

Technical Specifications 

Brand Allen-Bradley
Manufacturer Rockwell Automation
Part Number 1791-16B0
Voltage 24V dc
Inputs per Block 16
Series B

  

 

Information About 1791-16B0

The Allen-Bradley 1791-16B0 is a 16-point DC Block I/O module.  This module has 16 DC inputs and requires an input power of 24 Volts DC. The 1791-16B0 converts DC power from the input to appropriate DC power level that can be used by processor. The maximum input impedance of this I/O block is 3.4k ohms. There are several typical input devices for block I/O, those are proximity switches, limit switches, selector switches, float switches, and pushbutton switches.

1791-16B0 is compatible with various Allen-Bradley programmable logic controllers. Those are PLC-2, PLC-3, PLC-5/250, PLC-5, and SLC. The wiring connections for this module are easy to modify. A removable terminal strip feature is designed to replace or connect any wiring to the I/O block. You need to unscrew 2 captive screws from the terminal strip first before using it. Be aware of the technical input specifications of this I/O block. Be sure that any devices connected with this I/O block must have compatible voltage and current specifications.  1791-16B0 also has programmable controller user interface that allows you to easily navigate and control this I/O block. There is a power supply built into the module along with internal protection. The status indicator located on this module is used during troubleshooting. Switch assemblies are located behind the front cover. These switch assemblies are used for setting last state, last chassis, and I/O rack number.  The block I/O offers a complete I/O interface that includes the functionality of adapter and an I/O rack.


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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