The Allen-Bradley 1791-16BC is a block I/O module designed for industrial automation applications. This unit provides 16 inputs and 16 outputs, operating within a 10-30 VDC voltage range. As a compact block I/O solution, it is engineered to interface field devices directly with the control system, facilitating efficient signal processing in distributed I/O architectures.
Features
16 inputs organized into 2 groups of 8.
16 discrete outputs for versatile control.
Compatible with 24V DC control systems.
Robust block-style housing for industrial environments.
Wide operating voltage range of 10-30V DC.
Technical Specifications
Product Model
1791-16BC
Inputs
16 (2 groups of 8)
On-state Voltage Range
10-30V DC
Off-state Current (Max)
11.0mA @ 30V
Off-state Current (Min)
2.5mA @ 10V
Off-state Voltage (Max)
5V DC
Input Impedance (Max)
3.4K ohms
Min On-state Current (Output)
1mA per output
Max On-state Voltage Drop
1.0V @ rated current
Off-state Leakage Current (Max)
0.5mA
Output Signal Delay
0.5ms on / 1.0ms off
Installation Guidelines
Ensure the power supply is disconnected before installing or removing the module to prevent electrical damage.
Mount the module in a location that allows for adequate ventilation and cooling to maintain optimal operating temperatures.
Use shielded cables for I/O connections to minimize electromagnetic interference (EMI) in high-noise industrial environments.
Verify that all wiring connections are secure and properly terminated according to the module's terminal layout.
Handle the module with care, adhering to standard ESD (Electrostatic Discharge) protection practices during installation.
FAQ
Is the 1791-16BC still in production?
No, the Allen-Bradley 1791-16BC was officially discontinued by the manufacturer on June 30, 2015. We provide high-quality surplus or refurbished units to support legacy systems.
What are the compatible spare models for this unit?
The 1791-16BC is often interchangeable with revisions 1791-16BC/B and 1791-16BC/C, depending on your specific system requirements.
