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1791 Block I/O

Allen Bradley 1791 Block I/O

The 1791 Block I/O series is a series of small I/O devices that each include a power supply, a programmable controller interface, input and output connections, and circuitry. These devices come in small and compact designs. They have been designed and distributed by Allen-Bradley. The Allen-Bradley 1791 Block I/O series devices include 2 different kinds of blocks, and these are the 1791-IOBA block that comes with 8 inputs and 8 outputs, and the 1791-IOBB block that has 10 inputs and 6 outputs. The specifications are the same for both devices. These 2 blocks are compatible with different programmable controllers from the Allen-Bradley PLC-2, PLC-3, PLC-5, and the SLC 500 families of controllers. Physically, these blocks are composed of a DH-485 port, switch assemblies, status indicators, communication and power LEDs, removable remote I/O connectors, and removable input and output connectors.

The Allen-Bradley 1791 Block I/O devices provide all the functions of different equipment in a single terminal. These include the functions of an I/O rack and module, adapter, and a power supply. Both blocks require a 24 Volts DC power supply that has current limiting capabilities. The voltage that is employed must not fall outside the range of 20.5 to 27.6 Volts DC. The Allen-Bradley 1791 Block I/O must be installed in a ventilated area. This must be done to avoid overheating and enable the blocks to have safe operations. A minimum of 2 inches must be left between different blocks and the air temperature between the blocks must not exceed 55 degrees Celsius. The blocks must be mounted horizontally.

Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with DO Supply's 2-year warranty.
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Browse 1791 Block I/O

Browse available units in our catalog of 1791 Block I/O.

1791-0A16

120V ac BLOCK I/O Allen-Bradley AB with 16 Outputs per Block. Surplus and Used in Stock!

Available
4.7

1791-0A32

120V ac BLOCK I/O Allen-Bradley AB with 32 Outputs per Block. Surplus and Used in Stock!

In Stock Ships Today
5.0

1791-0B16

24V dc BLOCK I/O Allen-Bradley AB with 16 Outputs per Block. Surplus and Used in Stock!

In Stock Ships Today
4.8

1791-0B32

24V dc BLOCK I/O Allen-Bradley AB with 32 Outputs per Block. Surplus and Used in Stock!

In Stock Ships Today
5.0

1791-16A0

120V ac BLOCK I/O Allen-Bradley AB with 16 Inputs per Block. Surplus and Used in Stock!

In Stock Ships Today
4.9

1791-16AC

120V ac BLOCK I/O Allen-Bradley AB with 16 Inputs per Block and 16 Outputs per Block. Surplus and Used in Stock!

In Stock Ships Today
4.9

1791-16B0

24V dc BLOCK I/O Allen-Bradley AB with 16 Inputs per Block and Outputs per Block. Surplus and Used in Stock!

In Stock Ships Today
4.9

1791-16BC

24V dc BLOCK I/O Allen-Bradley AB with 16 Inputs per Block and 16 Outputs per Block. Surplus and Used in Stock!

In Stock Ships Today
5.0

1791-24A8

120V ac BLOCK I/O Allen-Bradley AB with 24 Inputs per Block and 8 Outputs per Block. Surplus and Used in Stock!

In Stock Ships Today
4.9

1791-24AR

120V ac BLOCK I/O Allen-Bradley AB with 24 Inputs per Block and 8 Outputs per Block. Surplus and Used in Stock!

In Stock Ships Today
4.8
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