Allen-Bradley 1791-16BO
Allen-Bradley 1791-16BO
Allen-Bradley 1791-16BO
Allen-Bradley 1791-16BO
Allen-Bradley 1791-16BO
Allen-Bradley 1791-16BO
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1791-16BO

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The Allen-Bradley 1791-16BO 16-input DC block I/O module enhances the monitoring capabilities of automation systems, making it ideal for applications requiring the processing of multiple input signals.
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Technical specifications for 1791-16BO

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1791-16BO
  • Product Family:
    1791 Block I/O
  • Inputs per Block:
    16-2 groups of 8
  • On-state Voltage Range:
    10-30V dc
  • On-state Current Maximum:
    11.0mA @ 30V
  • On-state Current Minimum:
    2.5mA @ 10V
  • Off-state Voltage Maximum:
    5V dc
  • Off-state Current Minimum:
    1.5mA
  • Input Impedance Maximum:
    3.4K ohms
  • Weight:
    0.54 kg
  • Estimated shipping dimensions:
    17.8x8.2x9.5cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Applications Installation & Integration Configuration & Programming

Features:

  • Interface Between DC Input Devices and 1791 Block I/O System Backplane
  • Combines Capability of 16-Channel Input Processing with Group Isolation Support
  • Operates in Conjunction with the 1791 Series Block I/O Modules and Standard Industrial Sensors
The Allen-Bradley 1791-16BO functions as the 16 Input DC Block I/O Module in a 1791 system, providing reliable signal acquisition for up to 16 discrete input devices. It continuously accepts incoming DC signals (10-30 VDC) with on-state current ranging from 2.5 mA to 11 mA and distributes these inputs through the module's internal circuitry to support steady state operation of connected sensors and switches. Seamless signal processing is standard with the 1791-16BO, with its dual-group configuration allowing organized input management for enhanced system reliability. The 1791-16BO has been designed to handle diverse input signal types in addition to incorporating wide voltage compatibility within industrial automation environments.

The 1791-16BO provides essential input functions common to the entire Block I/O system, and is a critical component of the monitoring path, directly affecting the proper, normal operation of the overall control system. One 1791-16BO module is required per input group depending on the desired channel count. The 1791-16BO occupies a dedicated position in the Block I/O configuration and is designed for flexible installation within the 1791 rack structure.

For Multi-Group Input applications, the 1791-16BO organizes its 16 inputs into two distinct groups of eight channels each. In addition to standard signal acquisition, the group configuration also performs organized input management. The 1791-16BO dual-group design executes signal processing using the internal circuitry specified in the module specifications. Using this method, the 1791-16BO system continually monitors the status of all 16 inputs. If the system detects input state changes, it will automatically process the signals and provide visual indication through integrated status LEDs for operator awareness.

The 1791-16BO Allen-Bradley 16 Input DC Block I/O Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1791-16BO 16 Input DC Block I/O Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1791-16BO 16 Input DC Block I/O Module Specs

General

  • Manufacturer Allen-Bradley
  • Model 1791-16BO
  • Condition New Original ready stock
  • Product Family 1791-16BC,1791-16AO
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Industrial Sensing: Ideal for monitoring pushbutton switches, selector switches, and float switches.
  • Machine Automation: Frequently used for limit switches and proximity sensors in material handling or packaging lines.
  • Distributed Systems: Reduces wiring costs by serving as a standalone remote node in a larger system.
  • Physical Setup: Secure the module on a 35mm DIN rail or via two 1/4-inch mounting screws. Ensure a 2.0-inch (50.8 mm) air gap on all sides for proper cooling.
  • Wiring: Use 14 AWG stranded wire for inputs and Belden 9463 for Remote I/O link connections. The module features a removable terminal strip with captive screws for easier maintenance.
  • Grounding: Connect the equipment grounding stud (lower-left side) to a solid earth ground. Do not exceed 15 in-lbs of torque on the stud nut.
  • Switch Settings (SW2): Located behind the front cover, these allow you to set the I/O rack number, communication rate, and filter speeds.
  • Filter Speed: SW2-7 selects between Slow (default) and Fast input filtering to reduce electrical noise.
  • Last State: Switches can be configured to "Hold Last State" or "Reset Outputs" upon communication loss.
  • Addressing: Data is accessed through the controller's I/O data tables. For SLC controllers, specialized labels are provided to match standard 00–07 and 08–15 numbering.
  • Status Monitoring: LED indicators on the front panel provide real-time feedback on individual input status and overall module health.
Description
The Allen-Bradley 1791-16BO 16 Input DC Block I/O Module is part of the esteemed 1791 Block I/O series, serving as a dedicated input module specifically designed for industrial automation environments. The 1791-16BO is engineered to facilitate a wide input voltage range from 10 V to 30 V DC, effectively managing up to 16 inputs organized into two groups, each containing eight inputs. This configuration of the 1791-16BO enhances monitoring capabilities in automation systems, making it ideal for applications requiring multiple input signal processing.

This 1791-16BO module operates efficiently with an on-state current that ranges from a minimum of 2.5 mA to a maximum of 11 mA. To ensure low power consumption in a non-active state, the 1791-16BO limits the off-state voltage to a maximum of 5 V DC. With an input impedance measuring at 3.4 K Ohms, the 1791-16BO is tailored for a variety of input signal types, ensuring compatibility with diverse sensors and switches commonly found in manufacturing and process control environments.

In terms of energy management, the 1791-16BO's power dissipation is noted at 11.1 watts, with thermal dissipation measured at 38 BTU/hr, allowing for proper heat maintenance during continuous operation. The inputs of the 1791-16BO are wired using 14 gauge wire, which provides adequate current capacity for reliable signal transmission across industrial installations.

This 1791-16BO input module is equipped with status LEDs to provide clear visual indications of operational states, enhancing user accessibility during monitoring and troubleshooting procedures. Designed to endure varied environmental conditions, the 1791-16BO can operate in temperatures from 0 °C to 60 °C and be stored between -40 °C and 85 °C. The humidity tolerance of the 1791-16BO, rated between 5% to 95% non-condensing, further extends its usability across different industrial settings including factory floors, assembly lines, and material handling systems where environmental conditions may fluctuate.
Revisions

Revision Part #

Also known as

1791-16BO Ser A
1791-16BO/A, Series A, Rev A
1791-16BO Ser B
1791-16BO/B, Series B, Rev B
Alternative Names
1791-16B0 1791-16BC 1791-16AO 1791-I6B0
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the 1791-16BO module?
The 1791-16BO is a 16-point DC input Block I/O module from Allen-Bradley, designed for industrial automation systems that require reliable multi-signal input monitoring.
What is the main function of the 1791-16BO?
The module is dedicated to processing digital input signals, making it suitable for applications that involve monitoring sensors, switches, and other field devices in automation systems.
Does the 1791-16BO provide status indication?
Yes, it is equipped with status LEDs that provide clear visual feedback for each input channel, simplifying monitoring and troubleshooting.