Allen-Bradley 1791-8BR Compact block I/O module

The Allen-Bradley 1791-8BR is a Compact block I/O module. This module is a combination module that features Eight (8) 24VDC inputs and Eight (8) Normally Open (N.O.) contact outputs. This module has a rackless design, installed directly to a standard DIN rail or directly panel mounted. It comes with a built-in power supply, communication interface, I/O interfaces and corresponding signal conditioning circuitry.

The 1791-8BR supports Remote I/O (RIO) protocol for interfacing with controllers and RIO scanners. With its compact design and built-in components, the 1791-8BR is capable of functioning as a stand-alone distributed I/O station. It may be installed near the input and output devices in the field to eliminate long cable runs.

The 1791-8BR, similar to any other Block I/O module, are compatible with PLC and SLC automation product families. Specifically, the 1791-8BR are compatible for use with PLC- Family scanner modules such as 1771-SN and 1772-SD / 1772-SD2; Any PLC-3 scanner modules and 1775-S5, or 1775-SR5 module from the PLC3 family and PLC-5VME (6008-LTV) module.

Technical specifications for 1791-8BR

ManufacturerRockwell Automation

Input Off-state Voltage5V dc max.

Input On-state Current11mA @ 30V max.

Part Number/Catalog No.1791-8BR

Input Off-state Current1.5mA min.

Dimensions6.95 x 2.7 x 3.85 in.

BrandAllen-Bradley

Compatible ControllersPLC-2, PLC-3, PLC-5/20, and PLC-5

Module TypeBlock I/O combination module

Module power:24VDC

No. of InputsEight (8)

Input On-state voltage:10-30VDC

Output voltage:20-30V dc @ 1A resistive, max.

Mounting orientationVertical and Horizontal

Voltage24V dc

Inputs per Block8

Input On-state Voltage Range10-30V dc

Outputs per Block8

Output Voltage Range20-30V dc @ 1A resistive max.

External Power19.2-30V dc

Product Lifecycle Status*Discontinued/Obsolete