Features:
- Interface Between 120VAC Input Devices and Distributed Control Networks
- Integrates Sixteen Discrete AC Inputs with Built-In Power Supply and PLC Communication
- Functions Seamlessly with Proximity Switches, Limit Switches, and Discrete Operating Devices
The Allen-Bradley 1791-16AO operates as a compact, self-contained Distributed I/O block designed to streamline input acquisition in industrial automation environments. This 1791-16AO module continuously accepts sixteen 120VAC discrete inputs and transmits corresponding data asynchronously to the host controller via daisy-chain network configuration. Built-in integration of the I/O rack, adapter, power supply, and input circuitry eliminates the need for separate component assembly, reducing installation complexity and panel space requirements. The 1791-16AO supports direct connection to proximity switches, limit switches, selector switches, float switches, pushbutton switches, and auxiliary contacts, providing versatile signal acquisition capabilities for diverse machine control applications.
The 1791-16AO delivers essential input processing functions within the Block I/O architecture and serves as a critical data acquisition node, directly influencing the accuracy and responsiveness of the overall control system. Each 1791-16AO module occupies a compact footprint suitable for horizontal or vertical mounting configurations, with a maximum output rating of 600mA at both 30°C and 60°C ambient temperatures. The 1791-16AO also accommodates surge currents up to 10A for 50ms, repeatable every 2 seconds, ensuring reliable operation during transient electrical events.
For system compatibility, the 1791-16AO supports integration with select 1771 series output modules including the 1771-OAN, 1771-OD16, 1771-ODD, and 1771-ODZ, provided the off-state leakage current remains below the 1791-16AO minimum OFF-state current threshold and the supply voltage minus the 1771 module on-state voltage drop does not exceed the 1791-16AO minimum ON-state voltage requirement. When installing the 1791-16AO, maintaining a 2-inch (58.0 cm) clearance on all sides ensures adequate airflow for thermal management and sustained operational reliability.
The 1791-16AO Allen-Bradley 16 Input AC 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 1791-16AO 16 Input AC 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 1791-16AO 16 Input AC Block I/O Module Specs
General
- Manufacturer Allen-Bradley
- Model 1791-16AO
- Condition New Original ready stock
- Product Family 1791-16BC,1791-16BO
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.
- Material Handling & Packaging: Efficiently monitoring high volumes of sensors in conveyor or sorting systems.
- Operator Interface Panels: Managing inputs from control panels located at a distance from the main processor.
- Field Device Monitoring: Compatible with various discrete field instruments: Pushbutton and selector switches,Limit and proximity switches,Float switches and auxiliary contacts.
- Operating Temperature: Must not exceed 60°C (140°F) in the air gap directly below the module.
- Thermal Dissipation: Maximum heat output is approximately 77.6 BTU/hr.
- Airflow Requirements: Requires a minimum 2.0-inch (50.8 mm) air gap on all four sides to ensure adequate cooling.
- Mounting Flexibility: Can be mounted vertically (recommended) or horizontally on a panel or DIN rail.
- Hazardous Locations: Some models in the series are UL certified for use in Class I, Div. 2, Groups A, B, C, and D hazardous environments.
- Safety Standards: Adheres to ANSI/ISA-12.12.01 and C22.2 No. 213-M1987 for non-incendive electrical equipment.
- Manufacturing Quality: Often found through vendors with ISO 9001:2015 certification for testing and refurbishing surplus units.