Allen Bradley 1791-16A0 Discrete I/O block

The Allen-Bradley 1791-16A0 is a Discrete I/O block that belongs to the small, self-contained Distributed I/O products. This device has embedded Sixteen (16) 120VAC inputs, including power supply and Programmable Logic Controller (PLC) interface.

The Block I/O family, including the 1791-16A0 has built-in functionalities such as and I/O rack, an adapter, power supply, input and output device. Block I/Os are installed in daisy-chain configuration to a scanner in the network, particularly a controller. Input and outputs are asynchronously scanned and transferred to and from the block I/O and the controller.

The 1769-16A0 supports integration of proximity switches, limit switches, selector switches, float switches, pushbutton switches, auxilliary contacts and other discrete operating devices.

Technical specifications for 1791-16A0

ManufacturerRockwell Automation

BrandAllen-Bradley

Product Type:Block I/O

No. of Inputs:Sixteen (16)

No. of Groups:2 groups of 8

On-state voltage range:79-132VAC, 47-63 Hz

External Power, Voltage:85-132VAC, 47-63 Hz

External Power, Current:150 mA

Maximum Off-state Voltage:35VAC

Nominal Input voltage:120VAC

Compatible field instruments:proximity switches; limit switches; selector switches; float switches; pushbutton switches

Mounting:Vertical / Horizontal

Maximum output rating:600mA @ 30 Deg. Celsius; 300mA @ 60 Deg. Celsius;

Maximum Surge Current:10A for 50ms (repeatable every 2s)

Part Number/Catalog No.1791-16A0

Voltage120V ac

Inputs per Block16

Input On-state Voltage Range79-132V ac

Input On-state Current5mA @ 79V min.

Input Off-state Voltage35V max.

Input Off-state Current2.3mA min.

Outputs per Block0

Output Voltage RangeN/A

External Power85-132V ac

Dimensions6.95 x 2.7 x 3.85 in.

Product Lifecycle Status*Discontinued/Obsolete