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.